S1C88649 Datasheet, PDF (1/20 Pages) Epson Company – 8-bit Single Chip Microcomputer

S1C88649
LOoPwpreoVrdaoutlictoatnsge
8-bit Single Chip Microcomputer
● Original Architecture Core CPU
● Character Generator ROM (192K bytes)
● Dot-matrix LCD Driver (80 × 16)
■ DESCRIPTION
The S1C88649 is an 8-bit microcomputer for portable equipment with an LCD display that has a built-in LCD
controller/driver and a character generator (kanji) ROM. This microcomputer features low-voltage (1.8V) and
high-speed (4.2MHz) operations as well as low-current consumption (2.5µA during standby). The LCD control-
ler/driver contains an LCD drive power supply circuit and can drive an maximum of 80 × 16-dot LCD panel in
low-power consumption. Furthermore, the S1C88649 has a built-in 11 × 12-dot kanji font ROM that contains JIS
level-1 and level-2 kanji sets and other characters, this makes it possible to display kanji characters without any
external kanji font ROM. This 8-bit CPU has up to 16MB accessible address space allowing easy implementa-
tion of a large data processing application. The S1C88649 is suitable for display modules, portable CD/MD and
solid audio players, cordless phones, digital TV remote control units and other applications that required an
exclusive LCD driver in conventional systems.
■ FEATURES
● Core CPU .............................................. S1C88 (MODEL3) CMOS 8-bit core CPU
● Main (OSC3) oscillation circuit ............. Crystal oscillation circuit/ceramic oscillation circuit 4.2MHz (Max.)
or CR oscillation circuit 2.0MHz (Max.) (∗1)
● Sub (OSC1) oscillation circuit ............... Crystal oscillation circuit/CR oscillation circuit 32.768kHz (Typ.) (∗1)
● Instruction set ........................................ 608 types (usable for multiplication and division instructions)
● Min. instruction execution time ............. 0.476µsec/4.2MHz (2-clock)
● Internal ROM capacity .......................... Program ROM: 48K bytes
Kanji font ROM: 192K bytes (can be used for a program/data ROM)
● Internal RAM capacity ........................... RAM:
8K bytes
Display memory: 480 bytes
● Bus line ................................................. Address bus:19 bits (also usable as a general output port
when not used as a bus)
Data bus: 8 bits (also usable as a general I/O port when
not used as a bus)
CE signal: 4 bits
WR signal: 1 bit
RD signal: 1 bit
(also usable as a general output port
when not used as a bus)
● Input port ............................................... 8 bits (2 bits can be set for event counter external clock input)
● Output port ............................................ 0–3 bits (when the external bus is used)
25 bits (when the external bus is not used)
● I/O port .................................................. 8 bits (when the external bus is used)
16 bits (when the external bus is not used)
(shard with serial interface, buzzer, FOUT and TOUT terminals)
● Serial interface ...................................... 1 ch. (optional clock synchronous system or asynchronous system)
● Timer ..................................................... Programmable timer: 16 bits × 2 ch. or 8 bits × 4 ch.
Clock timer:
1 ch.
Stopwatch timer: 1 ch.
● LCD driver ............................................. Dot matrix type (supports 5 × 8 or 5 × 5 dot fonts and 11 × 12 kanji font)
80 segments × 16 or 8 commons (∗2) (1/4 bias)
Built-in LCD power supply circuit (booster type, 4 potentials)