PF740-04
E0C88308
8-bit Single Chip Microcomputer
ge
olta
V
ide ration
W e
ts
Op oduc
Pr
q
Original Architecture Core CPU
q
Dot-matrix LCD Driver
q
512K-byte Addressable Space
q
Wide-range Operating Voltage (1.8V to 5.5V)
q
High Speed Operation in Low Voltage (0.48µsec/3.0V)
s
DESCRIPTION
The E0C88308 is a CMOS 8-bit microcomputer composed of a CMOS 8-bit core CPU, ROM, RAM, I/O, serial
interface, dot-matrix LCD driver, timer and event counter. The E0C88308 is best suited for systems needing a
large-sized memory and screen, such as a high performance data bank or an electronic dictionary.
s
FEATURES
q
CMOS LSI 8-bit parallel processing
q
Clock ..................................................... Twin clock system
q
Instruction execution time ..................... 0.48µsec (Min.)
q
Multiplication and division instructions included
q
ROM capacity ....................................... 8K
×
8 bits
q
RAM capacity ........................................ 256
×
8 bits (Working RAM)
402
×
8 bits (Display RAM)
q
Addressing ............................................ 512K-byte (19 bits)
Address bus: 19-bit ROM addressing, 19-bit RAM addressing
(Can be used as general output ports when the address bus is not used.)
Low-speed clock: 32.768kHz
High-speed clock: 4.2MHz (3V) / 8MHz (5V)
Data bus
CE signal
WR signal
RD signal
q
I/O port .................................................. Input only
Output only
: 8 bits
: 4 bits
: 1 bit
: 1 bit
(Can be used as general output ports
when the control signals are not used.)
(Can be used as general I/O ports when the data bus is not used.)
: 9 bits
(EVIN is available by software)
: 5 bits
(BZ, CL, FR, FOUT and TOUT are available by
software)
Bidirectional I/O : 8 bits
(SRDY, SCLK, SIN, SOUT, CMPP0, CMPM0,
CMPP1 and CMPM1 are available by software)
q
Serial interface ...................................... 1 channel
(Clock synchronous or Asynchronous can be selected by software)
q
LCD driver ............................................. Dot-matrix type (5
×
8 or 5
×
5)
57 segments
×
16 commons (1/16 duty, 1/5 bias)
41 segments
×
32 commons (1/32 duty, 1/5 bias)
Built-in power supply circuit for LCD driver (voltage booster)
(LCD segments can be expanded with external LCD driver)
q
Timer ..................................................... 8-bit programmable timer/event counter : 2 channels
(16-bit 1 channel timer is available)
Time base counter (8 bits)
Stopwatch timer (8 bits)
: 1 channel
: 1 channel
q
Sound generator ................................... 8 levels, with envelope, volume adjustment and 1 shot functions
SEIKO EPSON CORPORATION
1
SEIKO [ SEIKO EPSON CORPORATION ]
