8.Sep,1998
ML63326
PRELIMINARY
•
I/O ports
Input ports: Selectable as input with pull-up resistance/ input with pull-down resistor / high-impedance input
Output ports: Selectable as P-channel open drain output / N-channel open drain output / CMOS output /
high-impedance output
Input-output ports: Selectable as input with pull-up resistance / input with pull-down resistance / high-
impedance input
Selectable as P-channel open drain output / N-channel open drain output / CMOS
output / high-impedance output
Can be interfaced with external peripherals that use a different power supply than this device uses.
Number of ports:
Input ports
: 1 port
×
4 bits
Output port
: 4 ports
×
4 its
Input-output port
: 5 ports
×
4 bits and 1 port
×
2 bits
•
Voice synthesis
Algorithm
: 4-bit ADPCM / Oki non-linear 8-bit PCM / 8-bit PCM
Voice synthesis data memory:
Internal ROM
: 1 Mbit mask ROM (128k bytes)
External ROM
: 4 Mbit ROM (512k bytes max.)
Sampling frequencies (at clock frequency 4.096MHz)
4.0kHz, 5.3kHz, 6.4kHz, 8.0kHz, 10.7kHz, 12.8kHz, 16.0kHz
12-bit D/A converter
Low-pass filter
•
Melody output function
Two systems (one is in voice synthesis portion, the other is in microcontoroller portion)
MD, MDB output ports are selected from two systems
Melody output in voice synthesis portion can put out to AOUT/AOUTB output ports
•
LCD driver
Number of segments
: 1024 Max. (64SEG
×
16COM)
1/1 to 1/16 duty
1/4 or 1/5 bias (regulator built-in)
Selectable as all-on mode/ all-off mode/ power down mode/ normal display mode
Adjustable contrast
•
Reset function
Reset through RESET pin
Power-on reset
Reset to low-speed oscillation halt
•
Battery check
Low-voltage supply check
Criterion voltage
: Can be selected as 2.40
±0.20V
•
Timers and Counters
8-bit timer
×
4
Selectable to auto-reload mode/ capture mode/ clock frequency measurement mode
Watchdog timer
×
1
100Hz timer
×
1
15-bit time-base counter
×
1
1, 2, 4, 8, 16, 32, 64, and 128Hz signals can be read
2 of 4
OKI [ OKI ELECTRONIC COMPONETS ]
