
S1C62920 TECHNICAL MANUAL
EPSON
1
CHAPTER 1: OVERVIEW
CHAPTER
1OVERVIEW
The S1C62920 is a single-chip microcomputer made up of the 4-bit core CPU S1C6200A, ROM (2,048 words,
12 bits to a word), RAM (128 words, 4 bits to a word), R/F converter, SVD circuit, watchdog timer and time
base counter.
The S1C62920 is most suitable for controllers with temperature measurement functions, such as a heat
control unit.
1.1 Features
OSC1 oscillation circuit ...... Crystal oscillation circuit: 32.768 kHz (Typ.)
OSC3 oscillation circuit ...... Ceramic or CR oscillation circuit (*1): 1 MHz (Typ.)
Instruction set ..................... 108 types
Instruction execution time .. During operation at 32 kHz:
153 sec, 214 sec, 366 sec
(differ depending on instruction)
During operation at 1 MHz:
5 sec, 7 sec, 12 sec
ROM capacity ..................... 2,048 words
× 12 bits
RAM capacity ..................... 128 words
× 4 bits
Input port ............................ 4 bits (Pull up resistors may be supplemented *1)
Output port ......................... 4 bits (Complementary output or Nch open drain output may be selected *1)
May be set to buzzer, clock outputs (*1)
I/O port ............................... 8 bits
(Pull up resistors that function during input mode may be supplemented *1)
May be switched to serial I/O port (*2)
LCD driver .......................... 22 segments
× 2 to 4 commons
1/2–1/4 duty dynamic drive may be selected (*1)
Serial interface ................... 1 port (Clock synchronous type)
R/F converter ..................... 1 reference resistance
× 3 sensors, 16-bit counter
DC bias sensor may be connected
Time base counter ............. Clock timer: 1 system
Watchdog timer .................. Built-in
SVD circuit .........................
One of thefollowing may be set: 2.4 V, 2.5 V, 2.6 V, 2.7 V (*1)
(supply voltage detection)
External interrupt ................ Input port interrupt:
1 system
Internal interrupt ................. Clock timer interrupt:
1 system
R/F converter interrupt:
1 system
Serial interface interrupt:
1 system
Supply voltage .................... 2.2–5.5 V
Current consumption .......... During HALT:
2.0 A
(3 V, Typ.)
During operation: 5.0 A
(3 V, 32 kHz, Typ.)
270 A
(3 V, 1 MHz, Typ.)
Package ............................. QFP6-64pin, QFP13-64pin (plastic) or chip
*1 May be selected with mask option.
*2 May be selected with software.