S1C63666
4-bit Single Chip Microcomputer
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Original Architecture Core CPU
Low Current Consumption
High Speed Operation in Low Voltage
DESCRIPTION
The S1C63666 is a microcomputer which has a high-performance 4-bit CPU S1C63000 as the core CPU, ROM
(16,384 words × 13 bits), RAM (5,120 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 64 segments ×
8 commons, sound generator and R/f converter built-in. The S1C63666 features low current consumption, this
makes it suitable for battery driven portable equipment with R/f converter.
FEATURES
OSC1 oscillation circuit
OSC3 oscillation circuit
Instruction set
32.768 kHz (Typ.) crystal oscillation circuit
4 MHz (Max.) ceramic or 1.1 MHz (Typ.) CR oscillation circuit (*1)
Basic instruction: 46 types (411 instructions with all)
Addressing mode: 8 types
Instruction execution time
ROM capacity
During operation at 32.768 kHz:
During operation at 4 MHz:
61 μsec 122 μsec 183 μsec
0.5 μsec 1 μsec 1.5 μsec
Code ROM:
Data ROM:
16,384 words × 13 bits
4,096 words × 4 bits
5,120 words × 4 bits
RAM capacity
Data memory:
Display memory: 160 words × 4 bits
Input port
Output port
I/O port
Serial interface
LCD driver
Time base counter
8 bits (Pull-down resistors may be supplemented *1)
8 bits (It is possible to switch the 2 bits to special output *2)
8 bits (It is possible to switch the 4 bits to serial I/F input/output *2)
1 port (8-bit clock synchronous system)
64 segments × 4, 5 or 8 commons (*2)
Clock timer
Stopwatch timer (1/1000 sec, with direct key input function)
8 bits × 3 ch. or 16 bits × 1 ch. + 8 bits × 1 ch. (*2)
Built-in
Programmable timer
Watchdog timer
Sound generator
R/f converter
Multiply-divide circuit
With envelope and 1-shot output functions
2 ch., CR oscillation type, 20-bit counter
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
1 ch.
Analog comparator
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
Internal interrupt
Input port interrupt:
Clock timer interrupt:
2 systems
4 systems
Stopwatch timer interrupt:
Programmable timer interrupt:
Serial interface interrupt:
R/f converter interrupt:
4 systems
3 systems
1 system
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
-20 to 70°C
Operating temperature range
Current consumption (Typ.)
Low-speed operation (OSC1 = 32 kHz crystal oscillation):
During HALT
During operation 3.0 V (LCD ON, halver mode)
High-speed operation (OSC3):
3.0 V (LCD ON, halver mode)
0.65 µA
2.5 µA
During operation 3.0 V (LCD ON)
QFP20-144pin (plastic) or chip
1 mA
Shipment form
*1: Can be selected with mask option
*2: Can be selected with software