S1C88655 Datasheet, PDF (1/4 Pages) Epson Company – 8-bit Single Chip Microcomputer

S1C88655
8-bit Single Chip Microcomputer
● Original Architecture Core CPU
● Built-in Font Data ROM for Kanji and Hangul (512K bytes)
● Dot-matrix LCD Driver (128 × 64)
■ DESCRIPTION
The S1C88655 is an 8-bit microcomputer for portable equipment with an LCD display that has a built-in LCD
controller/driver and a font data ROM. The LCD controller/driver contains an LCD drive power supply circuit and
can drive a maximum of 128 × 64-dot LCD panel. The S1C88655 has a built-in large-capacity ROM that can
store various font data*. This microcomputer features low-voltage (1.8 V) and high-speed (8.2 MHz) operations
as well as low-current consumption, for instance, 2 µA in standby mode (HALT mode during 32 kHz operation
with crystal oscillation circuit). The S1C88655 is suitable for display modules such as PDAs and data banks that
require an general-purpose LCD driver in conventional systems as well as portable CD/MD players and solid
audio equipment with low-power and small-footprint.
∗ Fonts supported • 12 × 12-dot Japanese font (JIS level-1 and level-2, other characters)
• 12 × 12-dot Korean font (KSX1001)
Please contact Seiko Epson for more information on the fonts provided.
■ FEATURES
● Core CPU .............................................. S1C88 (MODEL3) CMOS 8-bit core CPU
● Main (OSC3) oscillation circuit ............. Crystal/ceramic oscillation circuit 8.2MHz (Max.)
or CR oscillation circuit 2.2MHz (Max.)^∗1
● Sub (OSC1) oscillation circuit ............... Crystal oscillation circuit 32.768kHz (Typ.)
or CR oscillation circuit 200kHz (Max.)^∗1
● Instruction set ........................................ 608 types (usable for multiplication and division instructions)
● Min. instruction execution time ............. 0.244µsec/8.2MHz (2-clock)
● Internal ROM capacity .......................... Program ROM: 48K bytes
Font data ROM: 512K bytes (can be used for a program/data ROM)
● Internal RAM capacity ........................... RAM:
8K bytes
Display memory: 2K bytes (8192 bits per screen × 2)
● Bus line ................................................. Address bus: 20 bits
Data bus:
_____
CE signal:
_____
WR signal:
_____
RD signal:
8 bits
4 bits (1MB addressing range × 4)
1 bit
1 bit
(also usable as general output ports when not used for the bus)
● Output port ............................................ 0–3 bits (when the external bus is used)
26 bits (when the external bus is not used)
● I/O port .................................................. 16 bits (when the external bus is used)
24 bits (when the external bus is not used)
(CMOS or Schmitt inputs^∗1, With or without pull-up resistors^∗1)
● Serial interface ...................................... 2 ch. (optional clock synchronous system or asynchronous system)
● Timer ..................................................... Programmable timer: 16 bits (8 bits × 2) 4 ch.
(with PWM waveform, SIF and LCD driver clock output functions)
Clock timer:
1 ch.
● LCD driver ............................................. Dot matrix type
128 segments × 64 commons
Built-in LCD power supply circuit (boosting: ×2, ×3, ×4, and ×5)