S1C63658

4-bit Single Chip Microcomputer

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Original Architecture Core CPU

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Low Current Consumption

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High Speed Operation in Low Voltage

DESCRIPTION

The S1C63658 is a microcomputer which has a high-performance 4-bit CPU S1C63000 as the core CPU, ROM

(8,192 words × 13 bits), RAM (1,024 words × 4 bits), multiply-divide circuit, serial interface, watchdog timer,

programmable timer, time base counters (2 systems), an LCD driver that can drive a maximum 56 segments ×

8 commons, sound generator and R/f converter built-in. The S1C63658 features low current consumption, this

makes it suitable for battery driven portable equipment with R/f converter.

FEATURES

OSC1 oscillation circuit

32.768 kHz (Typ.) crystal oscillation circuit

OSC3 oscillation circuit

4 MHz (Max.) ceramic

(2 MHz Max. when OSC3 is used as the R/f converter operating clock)

or 1.1 MHz (Typ.) CR oscillation circuit (*1)

Instruction set

Basic instruction: 46 types (411 instructions with all)

Addressing mode: 8 types

Instruction execution time

During operation at 32.768 kHz:

61

μsec 122 μsec 183 μsec

During operation at 4 MHz:

0.5

μsec 1 μsec

1.5

μsec

ROM capacity

Code ROM:

8,192 words × 13 bits

Data ROM:

2,048 words × 4 bits

RAM capacity

Data memory:

1,024 words × 4 bits

Display memory:

160 words × 4 bits

Input port

8 bits (Pull-down resistors may be supplemented *1)

Output port

8 bits (It is possible to switch the 2 bits to special output *2)

I/O port

8 bits (It is possible to switch the 4 bits to serial I/F input/output *2)

Serial interface

1 port (8-bit clock synchronous system)

LCD driver

56 segments × 4, 5 or 8 commons (*2)

Time base counter

Clock timer

Stopwatch timer (1/1000 sec, with direct key input function)

Programmable timer

8-bit timer × 3 ch., 16-bit timer × 1 ch. + 8-bit timer × 1 ch.,

8-bit PWM × 2 ch. + 8-bit timer × 1 ch.

or 16-bit PWM × 1 ch. + 8-bit timer × 1 ch. (*2)

Watchdog timer

Built-in

Sound generator

With envelope and 1-shot output functions

R/f converter

2 ch., CR oscillation type, 20-bit counter

Supports resistive humidity sensors

Multiply-divide circuit

8-bit accumulator × 1 ch.

Multiplication: 8 bits × 8 bits -> 16-bit product

Division: 16 bits ÷ 8 bits -> 8-bit quotient and 8-bit remainder

Analog comparator

1 ch.

Supply voltage detection (SVD)

Criteria voltage is selectable from 8 types (1.85 to 2.90 V *2)

(External voltage detection is possible ∗ 1)

External interrupt

Input port interrupt:

2 systems

Internal interrupt

Clock timer interrupt:

4 systems

Stopwatch timer interrupt:

4 systems

Programmable timer interrupt:

5 systems

Serial interface interrupt:

1 system

R/f converter interrupt:

2 systems

Power supply voltage

2.4 to 3.6 V: Max. 4 MHz operation in normal mode

2.4 to 3.6 V: 32 kHz operation in halver mode

1.8 to 3.6 V: 32 kHz operation in normal mode