MSM64158A

E2E0031-38-95 ¡ Semiconductor ¡ Semiconductor MSM64158A/64158AL GENERAL DESCRIPTION This version: Sep. 1998 MSM64158A/64158AL Previous version: Mar. 1996 4-Bit Microcontroller with Built-in LCD Driver and Melody Circuit The MSM64158A (1.5 V)/64158AL (3.0 V) is a high-performance 4-bit microcontroller that incroporates Oki-original CPU core nX-4/20. The MSM64158A/64158AL has an LCD driver for up to 144 segments, an event counter, and a melody circuit. It is best suited for applications such as clocks and LCD games. FEATURES Operating range Operating voltage Operating temperature Operating frequency Supply current (Typ.) Minimum instruction execution time General memory space Local memory space LCD drivers : 1.5 V/3.0 V : –40 to +70°C : 32.768 kHz crystal oscillation Approx. 32 kHz RC oscillation : 0.9 µ A (3.0 V at HALT mode) : 91 µs : 2528 bytes : 128 nibbles : 40 Common driver ¥ 4 Segment driver ¥ 36 1/4 duty, 1/3 bias; 144 segments (36 ¥ 4) 1/3 duty, 1/3 bias; 108 segments (36 ¥ 3) : 1 port ¥ 4 bits (open drain output/CMOS output selectable; pull-down resistor input/highimpedance input selectable) : 1 port ¥ 2 bits (pull-down resistor input /highimpedance input selectable) 1 port ¥ 4 bits (pull-down resistor input/highimpedance input selectable) : 1 : 1 : 7 sources (external 3, time base 3, melody 1) I/O port Input-output port Input port Event counter Melody output Interrupts Package: 64-pin plastic QFP (QFP64-P-1414-0.80-BK): (Product name : MSM...