S1C17653

16-bit Single Chip Microcontroller

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16KB MTP ROM(Three times): Read/program protection function, 2KB RAM

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Generates the operating clocks with the built-in oscillators.

- OSC3B oscillator circuit: 2 MHz/1 MHz/500 kHz (typ.) internal oscillator circuit

- OSC3A oscillator circuit: 4.2 MHz (max.) crystal or ceramic oscillator circuit

- OSC1B oscillator circuit: 32 kHz (typ.) internal oscillator circuit

- OSC1A oscillator circuit: 32.768 kHz (typ.) crystal oscillator circuit

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LCD driver Number of driver outputs: 32Seg. x 4Com.

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Shipping form: TQFP14-80PIN(12×12×1mm), Die

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RISC CPU core S1C17: the compact code optimized for C, and high throughput of an

instruction/clock, supports serial ICE

■DESCRIPTIONS

The S1C17653 is suitable for battery driven applications with up to 80-seg LCD, such as OTP (One Time

Password) products, Price TAG, and watches.

FEATURES

The main features of the S1C17653 are listed below.

CPU

CPU core

Seiko Epson original 16-bit RISC CPU core S1C17

Multiplier/Divider (COPRO)

• 16-bit × 16-bit multiplier

• 16-bit × 16-bit + 32-bit multiply and accumulation unit

• 16-bit ÷ 16-bit divider

Embedded Flash memory

Capacity

16K bytes (for both instructions and data)

Erase/program count

Three times

Other

• Read/program protection function

• Allows on-board programming using a debugging tool such as ICDmini.

Embedded RAM

Capacity

2K bytes

Clock generator

System clock source

System clock source

OSC3B oscillator circuit

2M/1M/500k Hz (typ.) internal oscillator circuit

OSC3A oscillator circuit

4.2 MHz (max.) crystal or ceramic oscillator circuit

OSC1B oscillator circuit

32 kHz (typ.) internal oscillator circuit

OSC1A oscillator circuit

32.768 kHz (typ.) crystal oscillator circuit

Oscillation adjustment by theoretical regulation

Other

• Core clock frequency control

• Peripheral module clock supply control

LCD driver

Number of driver outputs

Segment output: 32 pins, Common output: 4 pins

Other

• Includes a power supply voltage booster/reducer.

• Includes a display data memory.

I/O ports

Number of general-purpose I/O ports

Max. 12 bits (Pins are shared with the peripheral I/O.)

Other

• Schmitt input

• Pull-up control function

• Port input interrupt: 8 bits

Serial interfaces

SPI

1 channel

UART

1 channel (IrDA1.0 supported)

Timers/Counters

8-bit timer (T8)

1 channel (Generates the SPI clock.)

16-bit PWM timer (T16A2)

1 channel (PWM output, event counter, and count capture functions)

Watchdog timer (WDT)

1 channel (Generates NMI/reset.)

Clock functions