FEDL63611A-01
OKI Semiconductor
c. Processing speed
ML63611A
•
•
2 clocks per machine cycle, with most instructions executed in 1 machine cycle
Minimum instruction execution time: 61 µs (@ 32.768 kHz system clock)
10 µs (@ 200 kHz system clock)
2.86 µs (@ 700 kHz system clock)
d. Clock generator circuit
•
Low-speed clock:
Crystal oscillation (32.768 kHz)
•
High-speed clock:
OPTION A, OPTION B: RC oscillation (200 kHz max.)
OPTION C, OPTION D: Ceramic oscillation or RC oscillation selected with software (700 kHz
max.)
e. Program memory space
•
•
8K words
The basic instruction length is 16 bits per word.
f. Data memory space
1024 nibbles
•
g. Stack level
•
•
Call stack level: 16
Register stack level: 16
h. Ports
Input port (Port 0.0 to Port 0.3):
Selectable as input with pull-up resistor/high-impedance input
Provided with the reset function that resets the system when there is a simultaneous
key depression of multiple bits (2, 3, or 4 bits).
Output port:
Selectable as N-channel open drain output/CMOS output
Enabled only when the SEG pins (L32 to L35) are selected as the output port by the
mask option.
Input-output port (Port A.0 to Port A.3, Port B.0 to Port B.3, Port C.0 to Port C.3, Port E.0 to Port E.3):
Selectable as input with pull-up resistor/input with pull-down
resistor/high-impedance input
Selectable as P-channel open drain output/N-channel open drain output/CMOS
output/high-impedance output
Number of ports:
Input ports
1 port × 4 bits
Output ports
1 port × 4 bits
(mask option)
Input-output ports
4 ports × 4 bits
Chip products
i. Melody output
•
•
•
•
•
Melody frequency:
Tone length:
Tempo:
529 Hz to 2979 Hz (@ 32.768 kHz)
63 varieties
15 varieties
Melody data:
Stored in program memory
Buzzer driver signal output: 4 kHz (@ 32.768 kHz)
2/49
OKI [ OKI ELECTRONIC COMPONETS ]
