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Real-Time Clock ICs

 S35390A_Ӣ.pdf

S-35390A

2-wire Realtime Clock S-35390A

Description

The S-35390A is a low-current-consumption 2-wire CMOS real-time clock IC that features a wide operating voltage range (1.3 V to 5.5 V) and can be driven on a variety of supply voltages, from a main supply to a backup supply. The time keeping current consumption of 0.25 A and time keeping operation voltage of 1.1 V enable greatly increased battery duration. In a system that operates on a backup battery, the free register incorporated in the real-time clock can be used for the user backup memory function. The user register can hold data on a supply voltage as low as 1.2 V (min.), so the data stored in the register before the main power supply was cut can be called any time after the voltage is restored. This product also includes a clock adjustment function that enables wide-ranging correction of deviation in the frequency of the crystal oscillator at a minimum resolution of 1 ppm. Also, by combining this function with a temperature sensor, the clock adjustment value can be set in accordance with changes in the temperature, which makes it possible to realize a clock function that retains a high degree of accuracy regardless of temperature variation.


Features

  • Low current consumption

    0.25 A typ. (Vdd =3.0 V, Ta =25C)

  • Wide operating voltage range

    1.3 to 5.5 V

  • Time keeping operation voltage

    1.1 V

  • Built-in clock adjustment function

  • Built-in free user register

  • 2-wire (I2C-BUS) CPU interface

  • Built-in alarm interrupter

  • Built-in flag generator at power down or power on

  • Auto calendar up to the year 2099, automatic leap year calculation function

  • Built-in constant voltage circuit

  • Built-in 32 kHz crystal oscillator circuit (Cd built in, Cg external)

  • Lead-free products


Applications

  • Digital still cameras

  • Digital video cameras

  • Electronic power meters

  • DVD recorders

  • TVs, VCRs

  • PHS

  • Mobile phones

  • Car navigation

 S35391A_Ӣ.pdf

S-35391A

2-wire Realtime Clock S-35391A

Description

The S-35391A is a low-current-consumption 2-wire CMOS real-time clock IC that features a wide operating voltage range (1.3 V to 5.5 V) and can be driven on a variety of supply voltages, from a main supply to a backup supply.
S-35391A, designed to bus arbitration that separates IDs for identifying devices (device codes) so that system processing works without collision, is a product having different device code from S-35390A.
The time keeping current consumption of 0.25 A and time keeping operation voltage of 1.1 V enable greatly increased battery duration. In a system that operates on a backup battery, the free register incorporated in the real-time clock can be used for the user backup memory function. The user register can hold data on a supply voltage as low as 1.2 V (min.), so the data stored in the register before the main power supply was cut can be called any time after the voltage is restored. This product also includes a clock adjustment function that enables wide-ranging correction of deviation in the frequency of the crystal oscillator at a minimum resolution of 1 ppm. Also, by combining this function with a temperature sensor, the clock adjustment value can be set in accordance with changes in the temperature, which makes it possible to realize a clock function that retains a high degree of accuracy regardless of temperature variation.


Features

  • Low current consumption

    0.25 A typ. (Vdd =3.0 V, Ta =25C)

  • Wide operating voltage range

    1.3 to 5.5 V

  • Time keeping operation voltage

    1.1 V

  • Built-in clock adjustment function

  • Built-in free user register

  • 2-wire (I2C-BUS) CPU interface

  • Built-in alarm interrupter

  • Built-in flag generator at power down or power on

  • Auto calendar up to the year 2099, automatic leap year calculation function

  • Built-in constant voltage circuit

  • Built-in 32 kHz crystal oscillator circuit (Cd built in, Cg external)

  • Lead-free products


Applications

  • Digital still cameras

  • Digital video cameras

  • Electronic power meters

  • DVD recorders

  • TVs, VCRs

  • PHS

  • Mobile phones

  • Car navigation

 S35392A_Ӣ.pdf

S-35392A

2-wire Realtime Clock S-35392A

Description

The S-35392A is a low-current-consumption 2-wire CMOS real-time clock IC that features a wide operating voltage range (1.3 V to 5.5 V) and can be driven on a variety of supply voltages, from a main supply to a backup supply. The time keeping current consumption of 0.45 A and time keeping operation voltage of 1.1 V enable greatly increased battery duration. In a system that operates on a backup battery, the free register incorporated in the real-time clock can be used for the user backup memory function. The user register can hold data on a supply voltage as low as 1.2 V (min.), so the data stored in the register before the main power supply was cut can be called any time after the voltage is restored. This product also includes a clock adjustment function that enables wide-ranging correction of deviation in the frequency of the crystal oscillator at a minimum resolution of 1 ppm. Also, by combining this function with a temperature sensor, the clock adjustment value can be set in accordance with changes in the temperature, which makes it possible to realize a clock function that retains a high degree of accuracy regardless of temperature variation.


Features

  • Low current consumption

    0.45 A typ. (Vdd =3.0 V, Ta =25C)

  • Constant 32 kHz clock pulse output (Nch open-drain output)

  • Wide operating voltage range

    1.3 to 5.5 V

  • Time keeping operation voltage

    1.1 V

  • Built-in clock adjustment function

  • Built-in free user register

  • 2-wire (I2C-BUS) CPU interface

  • Built-in alarm interrupter

  • Built-in flag generator at power down or power on

  • Auto calendar up to the year 2099, automatic leap year calculation function

  • Built-in constant voltage circuit

  • Built-in 32 kHz crystal oscillator circuit (Cd built in, Cg external)

  • Lead-free products


Applications

  • Digital still cameras

  • Digital video cameras

  • Electronic power meters

  • DVD recorders

  • TVs, VCRs

  • PHS

  • Mobile phones

  • Car navigation

 S35399A03_Ӣ.pdf

S-35399A03

2-wire Realtime Clock S-35399A03

Description

The S-35399A03 is a CMOS 2-wire real-time clock IC which operates with the very low current consumption and in the wide range of operation voltage. The operation voltage is 1.3 V to 5.5 V so that this IC can be used for various power supplies from main supply to backup battery. Due to the 0.34 A current consumption and wide range of power supply voltage at time keeping, this IC makes the battery life longer. In the system which operates with a backup battery, the included free registers can be used as the function for users backup memory. Users always can take back the information in the registers which is stored before power-off the main power supply, after the voltage is restored. This IC has the function to correct advance/delay of the clock data speed, in the wide range, which is caused by the oscillation circuits frequency deviation. Correcting according to the temperature change by combining this function and a temperature sensor, it is possible to make a high precise clock function which is not affected by the ambient temperature. Moreover, this IC has a 24-bit binary up counter. This counter counts up every 60 sec from power-on so that users are able to grasp the elapsed time from power-on up to 30 years.


Features

  • Low current consumption

    0.34 A typ. (VDD = 3.0 V, Ta = 25C)

  • Wide range of operating voltage

    1.3 to 5.5 V

  • Built-in clock-correction function

  • Built-in 24-bit binary up counter

  • Built-in free user register

  • 2-wire (I2C-bus) CPU interface

  • Built-in alarm interrupter

  • Built-in flag generator during detection of low power voltage or at power-on

  • Auto calendar up to the year 2099, automatic leap year calculation function

  • Built-in constant voltage circuit

  • Built-in 32.768 kHz crystal oscillator (Cd built in, Cg external)

  • Lead-free product


Applications

  • Mobile game devices

  • Mobile AV devices

  • Digital still cameras

  • Digital video cameras

  • Electronic power meters

  • DVD recorders

  • TVs, VCRs

  • Mobile phones, PHS

  • Car navigation

S-78390A

Real-Time Clock with Switch Input Detection Function (2-wire Interface, Remote Control Signal Header Detection Enabled) S-78390A Series

Description

The S-78390A Series is a CMOS real-time clock IC which operates with low current consumption and a wide voltage range. This IC counts time in year, month, day, days of the week, hour, minute, and second. It also includes an auto calculation function for leap-year and its calendar is up to 2099. An alarm interrupt function is included in units of years, months, days, days of the week, hours, and minutes. Due to its operation with low voltage and low current consumption, this IC is suitable for equipment which works with battery. Just in the clock operation in which users do not use the communicational function, this IC operates with a power supply of 1.1 V. A 8-channel switch input detection circuit is also included. One of these channels can be optionally changed as a remote control signal header detection circuit. When either switch input or a remote control signal header is detected, this IC outputs a signal for notification to the CPU or other devices. Since this IC is able to detect a trigger input, it can greatly suppress power consumption during the host devices sleep mode.


Features

  • Low current consumption

    0.35 A Typ. (VDD = 3.0 V, Ta = 25C,BKUP=L)

  • Wide operating voltage range

    1.3 to 5.5 V

  • Time keeping operation voltage

    1.1 V

  • 2-wire (I2C-bus) CPU interface

  • Built-in input detection circuit

  • Built-in remote control pre-decode circuit (by option)

  • Report signal output function by trigger input detection

  • Built-in user free register

  • Built-in clock adjustment function

  • Built-in alarm interrupter

  • Built-in constant-voltage circuit

  • Built-in flag generator at power down and power on

  • Auto calendar up to the year 2099, automatic leap year calculation function

  • Built-in 32 kHz crystal oscillator circuit (Cd built in, Cg external)

  • Lead-free product


Applications

  • Digital video cameras

  • Digital still cameras

  • DVD recorders

  • Thin-screen televisions

  • Car Navigation system

  • IC recorder

 S35190A_Ӣ.pdf

S-35190A

3-wire Realtime Clock S-35190A

Description

The S-35190A is a low-current-consumption 3-wire CMOS real-time clock IC that features a wide operating voltage range (1.3 V to 5.5 V) and can be driven on a variety of supply voltages, from a main supply to a backup supply. The time keeping current consumption of 0.25 A and time keeping operation voltage of 1.1 V enable greatly increased battery duration. In a system that operates on a backup battery, the free register incorporated in the real-time clock can be used for the user backup memory function. The user register can hold data on a supply voltage as low as 1.2 V (min.), so the data stored in the register before the main power supply was cut can be called any time after the voltage is restored. This product also includes a clock adjustment function that enables wide-ranging correction of deviation in the frequency of the crystal oscillator at a minimum resolution of 1 ppm. Also, by combining this function with a temperature sensor, the clock adjustment value can be set in accordance with changes in the temperature, which makes it possible to realize a clock function that retains a high degree of accuracy regardless of temperature variation.


Features

  • Low current consumption

    0.25 A typ. (Vdd =3.0 V, Ta =25C)

  • Wide operating voltage range

    1.3 to 5.5 V

  • Time keeping operation voltage

    1.1 V

  • Built-in clock adjustment function

  • Built-in free user register

  • 3-wire (micro wire) CPU interface

  • Built-in alarm interrupter

  • Built-in flag generator at power down or power on

  • Auto calendar up to the year 2099, automatic leap year calculation function

  • Built-in constant voltage circuit

  • Built-in 32 kHz crystal oscillator circuit (Cd built in, Cg external)

  • Lead-free products


Applications

  • Digital still cameras

  • Digital video cameras

  • Electronic power meters

  • DVD recorders

  • TVs, VCRs

  • PHS

  • Mobile phones

  • Car navigation

 S35192A_Ӣ.pdf

S-35192A

3-wire Realtime Clock S-35192A

Description

The S-35192A is a low-current-consumption 3-wire CMOS real-time clock IC that features a wide operating voltage range (1.3 V to 5.5 V) and can be driven on a variety of supply voltages, from a main supply to a backup supply. The time keeping current consumption of 0.45 A and time keeping operation voltage of 1.1 V enable greatly increased battery duration. In a system that operates on a backup battery, the free register incorporated in the real-time clock can be used for the user backup memory function. The user register can hold data on a supply voltage as low as 1.2 V (min.), so the data stored in the register before the main power supply was cut can be called any time after the voltage is restored. This product also includes a clock adjustment function that enables wide-ranging correction of deviation in the frequency of the crystal oscillator at a minimum resolution of 1 ppm. Also, by combining this function with a temperature sensor, the clock adjustment value can be set in accordance with changes in the temperature, which makes it possible to realize a clock function that retains a high degree of accuracy regardless of temperature variation.


Features

  • Low current consumption

    0.45 A typ. (Vdd =3.0 V, Ta =25C)

  • Constant 32 kHz clock pulse output (Nch open-drain output)

  • Wide operating voltage range

    1.3 to 5.5 V

  • Time keeping operation voltage

    1.1 V

  • Built-in clock adjustment function

  • Built-in free user register

  • 3-wire (micro wire) CPU interface

  • Built-in alarm function

  • Built-in flag generator at power down or power on

  • Auto calendar up to the year 2099, automatic leap year calculation function

  • Built-in constant voltage circuit

  • Built-in 32 kHz crystal oscillator circuit (Cd built in, Cg external)

  • Lead-free products


Applications

  • Digital still cameras

  • Digital video cameras

  • Electronic power meters

  • DVD recorders

  • TVs, VCRs

  • PHS

  • Mobile phones

  • Car navigation

S-78190A

Real-Time Clock with Switch Input Detection Function (3-wire Interface, Remote Control Signal Header Detection Enabled) S-78190A Series

Description

The S-78190A Series is a CMOS real-time clock IC which operates with low current consumption and a wide voltage range. This IC counts time in year, month, day, days of the week, hour, minute, and second. It also includes an auto calculation function for leap-year and its calendar is up to 2099. An alarm interrupt function is included in units of years, months, days, days of the week, hours, and minutes. Due to its operation with low voltage and low current consumption, this IC is suitable for equipment which works with battery. Just in the clock operation in which users do not use the communicational function, this IC operates with a power supply of 1.1 V. A 7-channel switch input detection circuit is also included. One of these channels can be optionally changed as a remote control signal header detection circuit. When either switch input or a remote control signal header is detected, this IC outputs a signal for notification to the CPU or other devices. Since this IC is able to detect a trigger input, it can greatly suppress power consumption during the host devices sleep mode.


Features

  • Low current consumption

    0.35 A Typ. (VDD = 3.0 V, Ta = 25C,BKUP=L)

  • Wide operating voltage range

    1.3 to 5.5 V

  • Time keeping operation voltage

    1.1 V

  • 3-wire (Microwire) CPU interface

  • Built-in input detection circuit

  • Built-in remote control pre-decode circuit (by option)

  • Report signal output function by trigger input detection

  • Built-in user free register

  • Built-in clock adjustment function

  • Built-in alarm interrupter

  • Built-in constant-voltage circuit

  • Built-in flag generator at power down and power on

  • Auto calendar up to the year 2099, automatic leap year calculation function

  • Built-in 32 kHz crystal oscillator circuit (Cd built in, Cg external)

  • Lead-free product


Applications

  • Digital video cameras

  • Digital still cameras

  • DVD recorders

  • Thin-screen televisions

Programmable Port Controller

 S7760A_Ӣ.pdf

S-7760A

Programmable Port Controller S-7760A

Description

The S-7760A is a programmable port controller IC comprised of E2PROM, a control circuit for data output, a circuit to prevent malfunction caused by low power supply voltage and others. This IC operates at 400 kHz and interfaces with exteriors via I2C-bus, controls an 8ch digital output with a serial signal. Among the digital output ports of 8 channels, the lower 4 channels have a timer function so that at each port, users are able to set the default value and inverted delay time. In the higher 4 channels, setting the fixed output is available at each port. The default value is maintained despite power-off because this IC has an E2PROM. The S-7760A is able to be used to control ON/OFF for the chips surrounding MPU and to output the default data that devices fundamentally have.


Features

  • Operating voltage range

    2.3 to 4.5 V

  • 8ch digital output

    Higher 4 channels; fixed output/lower 4 channels; timer action

  • Operating frequency of I2C-bus interface

    400 kHz

  • Low current consumption at standby

    3.0 A Max. (VCCH = 4.5 V CMOS input type) 10.0 A Max. (VCCH = 4.5 V low voltage input type)

  • Built-in E2PROM circuit

    6-byte

  • E2PROM endurance

    105 cycles / word*1 (at −40 to +85 C)

  • E2PROM data retention

    10 years (after rewriting 105 cycles / word)

  • Write protect function in E2PROM

  • Function to prevent malfunction during low power supply voltage operation

  • Lead-free product


Applications

  • Mobile phone

  • Portable communication device

  • Digital still camera

  • Digital video camera

Wireless Power IC

 S8473_E.pdf

S-8471

Wireless Power Receiver Control IC S-8471 Series

Description

The S-8471 Series is Wireless Power Receiver Control IC, which is configured with an overvoltage detection circuit, a high temperature detection circuit, an ON / OFF circuit, etc.


Features

  • Current consumption

    During operation: ISS1 = 30 A typ.

    During power-off: ISS2 = 1.0 A max.

  • Overvoltage detection voltage range

    4.00 V to 5.50 V, selectable in 50 mV step

  • Overvoltage detection accuracy

    2.0%

  • ON / OFF pin control logic is selectable

    Active H, active L

  • ON / OFF pin internal resistor connection is selectable

    Unavailable, pull-up, pull-down

  • Built-in ON / OFF circuit

  • Over temperature protection function

    Available by connecting a thermistor to the TH pin.

  • Operation temperature range

    Ta = −40C to +85C

  • Lead-free (Sn 100%), Halogen-free


Applications

  • Device for wireless power

  • Small-sized wireless charging system

 S8473_E.pdf

S-8473

Wireless Power Receiver Control IC With Charge Function S-8472/8473 Series

Description

The S-8472/8473 Series is Wireless Power Receiver Control IC, which is configured with an overvoltage detection circuit, a charge current control circuit, a VBAT voltage detection circuit, a UVLO circuit, high temperature / low temperature detection circuit, etc. This IC has a charge function to a small lithium-ion rechargeable battery.


Features

  • Power supply voltage

    Vdd = 2.2 V to 5.0 V

  • Current consumption during charge operation

    ISS1 = 250 A typ.

  • VBAT pin current consumption during power-down

    IPDN = 1.0 A max.

  • UVLO detection voltage

    VUVLO− = 2.0 V typ.

  • Charge function to a small lithium-ion rechargeable battery

    Charge current: ILIM = 33 mA typ.

    Precharge current: IPRE = 3.3 mA typ.

    Precharge completion voltage: 2.4 V to 3.4 V (50 mV step)

    Charge completion voltage: 4.0 V to 4.5 V (50 mV step)

    Recharge start voltage: 3.6 V to 4.45 V

    Short-circuit detection voltage: 1.5 V to 2.0 V (50 mV step)

    Charge timer function:

    The charge operation stops after the elapse of 4.0 hours. (CCT = 4.7 nF)

    The time is settable by connecting an external capacitor to the CT pin.

  • High temperature / low temperature protection function

    Available by connecting a thermistor to the TH pin.

  • Status display function

    Available by connecting an external LED to the STATUS pin.

    During charge operation: Lighting

    During charge operation stop: Lights-out

    During error detection: Blinking

  • Operation temperature range

    Ta = −40C to +85C

  • Lead-free (Sn 100%), Halogen-free


Applications

  • Device for wireless power

  • Small-sized wireless charge system

 S8474_E.pdf

S-8474

The S-8474 Series is Wireless Power Transmitter Control IC, which is configured with an ON time control circuit, an OFF time control circuit, a reception detection circuit, a UVLO circuit, a high temperature detection circuit, etc.

Features

  • Power supply voltage

    Vdd = 4.5 V to 6.5 V

  • Current consumption

    During operation: ISS1 = 200 A typ.

  • During standby: ISTB = 3.0 A max.

  • UVLO detection voltage

    VUVLO− = 4.1 V typ.

  • tON time is settable by connecting an external resistor to the RTON pin.Power saving is possible by intermittent operation during standby time of a receiver module.

    Active time: tACT = 5.0 ms typ.

    Sleep time: tSLEEP = 25.0 ms typ.

  • TH pin detection voltage is selectable

    0.667 V, 0.577 V, 0.500 V, 0.429 V, 0.370 V

  • Built-in reception detection circuit

  • Status display function

    Available by connecting an external LED to the STATUS pin.

    Continuous operation mode: Lighting

    Intermittent operation mode: Lights-out

    High temperature protection mode: Blinking

  • Over temperature protection function

    Available by connecting a thermistor to the TH pin.

  • Operation temperature range

    Ta = −40C to +85C

  • Lead-free (Sn 100%), Halogen-free

 

Applications

  • Device for wireless power

  • Small-sized wireless charging system