
S1C8F626 TECHNICAL MANUAL
EPSON
1
1 INTRODUCTION
1 INTRODUCTION
The S1C8F626 is a microcomputer which has
a built-in 8-bit CPU S1C88 (MODEL3) as the core
CPU, 48K-byte and 192K-byte Flash EEPROMs, 8K-
byte RAM, 16-bit programmable timers (PWM),
serial interface, watchdog timer, stopwatch timer,
an LCD driver that can drive a maximum 96
segments
× 32 commons and a supply voltage
detection circuit.
This microcomputer features low-voltage (1.8 V)
and high-speed (8.2 MHz) operations as well as
low-current consumption (2.5 A in HALT mode).
Furthermore, the S1C8F626 allows the user to
program (erase, program, verify) the internal ROM
even if it is mounted on the target board. The
S1C8F626 Flash EEPROM can be used for storing a
11
× 12-dot kanji font data that contains JIS level-1
and level-2 kanji sets, other characters and user-
defined characters, this makes it possible to display
kanji characters without any external kanji font
ROM (refer to Appendix B, "USING KANJI
FONT").
The S1C8F626 is suitable for various battery driven
controllers.
1.1 Features
Table 1.1.1 lists the features of the S1C8F626.
Table 1.1.1 Main features
Core CPU
Main (OSC3) oscillation circuit
Sub (OSC1) oscillation circuit
Instruction set
Min. instruction execution time
Internal ROM capacity
(Flash EEPROM)
Internal RAM capacity
Input port
I/O port
Serial interface
Timer
LCD driver
Watchdog timer
Supply voltage detection
(SVD) circuit
Interrupt
Supply voltage
Current consumption
Supply form
S1C88 (MODEL3) CMOS 8-bit core CPU
Crystal oscillation circuit/ceramic oscillation circuit 8.2 MHz (Max.), or CR oscillation circuit 2.2 MHz (Max.)
Crystal oscillation circuit 32.768 kHz (Typ.)
608 types (usable for multiplication and division instructions)
0.244
sec/8.2 MHz (2 clock)
48K bytes: Program ROM
192K bytes: Program and data (font) ROM
Can be programmed using the On Board Writer. (Supports various security settings.)
Supports self-programming by the user program.
8K bytes:
RAM
576 bytes: Display memory (4608 bits/display area
× 2)
8 bits
(4 bits can be used as the source clock inputs for PWM timers.)
24 bits
(Shard with serial interface, FOUT and TOUT terminals.)
2 ch
(Supports clock synchronous system, asynchronous system and IrDA1.0 interface.)
Programmable timer: 16 bits (8 bits
× 2) 4 ch (with PWM function)
Clock timer:
1 ch
Stopwatch timer:
1 ch
Dot matrix type (supports 16
× 16/5 × 8 or 12 × 12 dot font)
96 segments
× 32, 16 or 8 commons (1/5 bias)
Built-in LCD power supply circuit (booster type, 5 potentials)
Built-in
13 value programmable (1.8–2.7 V)
External interrupt: Input interrupt
1 system (8 types)
Internal interrupt: Timer interrupt
6 systems (23 types)
Serial interface interrupt
2 systems (6 types)
1.8–3.6 V (for running, internal operating voltage VD1 = 1.8 V)
2.7–3.6 V (for Flash programming, internal operating voltage VD1 = 2.5 V)
SLEEP mode: 1
A
(Typ.)
HALT mode: 2.5
A (Typ.) 32 kHz crystal, LCD OFF
7.5
A (Typ.) 32 kHz crystal, LCD ON*, VDD = 2.5–3.6 V
Run state:
10
A
(Typ.)
32 kHz crystal, LCD OFF
1.8 mA
(Typ.)
8 MHz ceramic, LCD OFF
700
A (Typ.) 2 MHz CR, LCD OFF
15
A
(Typ.)
32 kHz crystal, LCD ON*, VDD = 2.5–3.6 V
28
A
(Typ.)
32 kHz crystal, LCD ON*, VDD = 1.8–2.5 V, Power voltage booster ON
15
A
(Typ.)
32 kHz crystal, SVD ON
Chip, VFBGA10H-240pin or QFP21-216pin package
The current consumption with LCD ON listed above is the value under the conditions of LCDCx = "11 (all on)", LCx = "0FH" and
"No panel load". Current consumption increases according to the display contents and panel load.