MSM64155A Datasheet, PDF (1/26 Pages) OKI electronic componets – 4-Bit Microcontroller with Built-in LCD Driver and Melody Circuit

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Previous version: Mar. 1996
MSM64155A/64155AL
4-Bit Microcontroller with Built-in LCD Driver and Melody Circuit
GENERAL DESCRIPTION
The MSM64155A (1.5 V)/64155AL (3.0 V) is a high-performance 4-bit microcontroller that
incorporates Oki-original CPU core nX-4/20.
The MSM64155A/64155AL has an LCD driver for up to 240 segments, an event counter, and
melody circuits. It is best suited for applications such as clocks and LCD games.
FEATURES
• Operating range
Operating voltage
: 1.5 V/3.0 V
Operating temperature
: –40 to +70 °C
Operating frequency
: 32.768 kHz crystal oscillation
Approx. 32 kHz RC oscillation
Supply current (Typ.)
: 0.9 mA (3.0 V at HALT mode)
• Minimum instruction execution time : 91 ms
• General memory space
: 4064 bytes
• Local memory space
: 256 nibbles
• LCD driver
: 64
Common driver ¥ 4
Segment driver ¥ 60
1/4 duty, 1/3 bias; 240 segments (60 ¥ 4)
1/3 duty, 1/3 bias; 180 segments (60 ¥ 3)
• I/O port
Input-output port
: 2 ports ¥ 4 bits (open-drain output/CMOS output
selectable; pull-down resistor input/high-impedance
input selectable)
Input port
: 1 port ¥ 2 bits (pull-down resistor input/high-impedance
input selectable)
1 port ¥ 4 bits (pull-down resistor input/high-impedance
input selectable)
Output port
: 1 port ¥ 4 bits (CMOS output)
• Event counter
: 1 channel
• Melody output
:2
• Interrupts
: 10 sources
External 4, time base 4, melody 2
• Package:
100-pin plastic QFP (QFP100-P-1420-0.65-BK) : (Product name : MSM64155A-¥¥¥GS-BK,
MSM64155AL-¥¥¥GS-BK)
Chip
: MSM64155A-¥¥¥, MSM64155AL-¥¥¥
¥¥¥ indicates a code number.
• OTP version (for program evaluation) : MSM64P155/64P155L
(The power polarity and operating voltage of the MSM64P155/64P155L are different from the
MSM64155A/64155AL. For details, refer to the "MSM64P155 User's Manual".)
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