¡ Semiconductor
• Stack level
Call stack level
Register stack level
ML63187/63189B
: 16 levels
: 16 levels
• I/O ports
Input ports: Selectable as input with pull-up resistor/input with pull-down resistor/high-
impedance input
Input-output ports: 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
Can be interfaced with external peripherals that use a different power supply than this device
uses.
Number of ports:
ML63187
Input-output port
: 2 ports
¥
4 bits
ML63189B
Input port
: 1 port
¥
4 bits
Input-output port
: 4 ports
¥
4 bits
• Melody output
Melody frequency
Tone length
Tempo
Melody data
Buzzer driver signal output
:
:
:
:
:
529 to 2979 Hz
63 types
15 types
Resides in the program memory
4 kHz
• LCD driver
Number of segments
: 1024 Max. (64 SEG
¥
16 COM)
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 by low-speed oscillation halt
• Battery check
Low-voltage supply check
The value of the judgment voltage is selected by the software by setting the LD1 and LD0 bits
of BLDCON.
LD1
0
0
1
1
LD0
0
1
0
1
Judgment Voltage (V)
1.05 ±0.10
1.20 ±0.10
1.80 ±0.10
2.40 ±0.10
Remarks
Ta = 25°C
Ta = 25°C
Ta = 25°C
Ta = 25°C
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OKI [ OKI ELECTRONIC COMPONETS ]
