MSM64481 Datasheet, PDF (1/12 Pages) OKI electronic componets – Built-in 512-Bit EEPROM and LCD Driver 4-Bit Microcontroller

E2E0038-27-Y3
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This version:_MJa_Sn_M. 1₆9₄9₄8₈₁
Previous version: Mar. 1996
MSM64481
Built-in 512-Bit EEPROM and LCD Driver 4-Bit Microcontroller
GENERAL DESCRIPTION
The MSM64481 is a 4-bit microcontroller with built-in EEPROM that incorporates OKI's nX-4s
CPU core. The device contains a 2K-byte ROM, 128-nibble RAM, 128-nibble EEPROM, 1/2 duty
LCD driver, time base counter, watchdog timer, low voltage detection circuit, seven interrupt
sources, one 3-bit input port, two 4-bit input/output ports, and 500 kHz RC oscillator circuit
(with an external capacitor C).
FEATURES
• Operating range
Operating frequency
: 200 kHz to 1 MHz
Operating voltage
: 3 to 6 V
Operating temperature
: –40 to +85°C
• Internal program memory
: 2048 bytes
• Internal data memory
: 128 nibbles
• Built-in EEPROM
: 128 nibbles
• Interrupt sources
: 6 (3 internal, 3 external)
• Minimum instruction execution time : 6 ms (@ 500 kHz)
• I/O Port
Input-output port
: 2 ports ¥ 4 bits
Input port
: 1 port ¥ 3 bits
• 1/2 duty LCD driver
Segment drivers
: 40
Common drivers
:2
• Built-in watchdog timer
• CPU operating voltage
: 3.0 to 5.5 V
• EEPROM writable operating voltage : 4.5 to 5.5 V
• LCD display operating voltage
: 3.0 to 6.0 V
• Package options
60-pin plastic QFP (QFP60-P-1519-1.00-K) : (Product name: MSM64481-014GS-K)
56-pin plastic QFP (QFP56-P-910-0.65-2K) : (Product name: MSM64481-014GS-2K-H)
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