Dear customers,
About the change in the name such as "Oki Electric Industry Co. Ltd." and
"OKI" in documents to OKI Semiconductor Co., Ltd.
The semiconductor business of Oki Electric Industry Co., Ltd. was succeeded to OKI
Semiconductor Co., Ltd. on October 1, 2008.
Therefore, please accept that although
the terms and marks of "Oki Electric Industry Co., Ltd.", “Oki Electric”, and "OKI"
remain in the documents, they all have been changed to "OKI Semiconductor Co., Ltd.".
It is a change of the company name, the company trademark, and the logo, etc. , and
NOT a content change in documents.
October 1, 2008
OKI Semiconductor Co., Ltd.
550-1 Higashiasakawa-cho, Hachioji-shi, Tokyo 193-8550, Japan
http://www.okisemi.com/en/
E2E0030-38-95
¡ Semiconductor
¡ Semiconductor
MSM64155A/64155AL
GENERAL DESCRIPTION
This version: Sep. 1998
MSM64155A/64155AL
Previous version: Mar. 1996
4-Bit Microcontroller with Built-in LCD Driver and Melody Circuit
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
Operating temperature
Operating frequency
: 1.5 V/3.0 V
: –40 to +70
°C
: 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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