S1C63657

SEIKO EPSON CORPORATION

CMOS 4-bit Single Chip Microcontroller

● High Performance 4-bit Core CPU S1C63000

● LCD Driver (56 SEG × 8 COM)

● R/f Converter to Measure Temperature and Humidity

● Low Current Consumption

● Low Voltage Operation

■ DESCRIPTIONS

The S1C63657 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, watchdog timer, programmable timer, time base

counter, an LCD driver that can drive a maximum 56 segments × 8 commons, sound generator and R/f converter built-in.

The S1C63657 features low current consumption, this makes it suitable for battery driven portable equipment with R/f

converter.

■ FEATURES

● Core CPU....................................................4-bit CMOS core CPU S1C63000

● 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

1.0 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

● LCD driver ..................................................56 segments × 4, 5 or 8 commons (∗2)

● Time base counter ....................................Clock timer

● 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 channels, 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

● External interrupt.......................................Input interrupt:

2 systems

● Internal interrupt ........................................Clock timer interrupt:

4 systems

Programmable timer interrupt: 5 systems

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

● Operating temperature range ...................-20 to 70°C

● Current consumption (Typ.) .....................Low-speed operation (OSC1 = 32 kHz crystal oscillation):

During HALT

3.0 V (LCD ON, halver mode)

0.65 μA

During operation

3.0 V (LCD ON, halver mode)

2.5 μA

High-speed operation (OSC3 = 4 MHz ceramic oscillation):

During operation

3.0 V (LCD ON)

800 μA

● Shipping form.............................................Chip (no polyimide)

∗1: Can be selected with mask option

∗2: Can be selected with software