MSM6502B

E2E0018-27-Y4 www.DataSheet4U.com ¡ Semiconductor ¡ Semiconductor MSM6502B/6512 Low-power and Built-in LCD Driver 4-Bit Microcontroller This version: Jan. 1998 MSM6502B/6512 Previous version: Mar. 1996 GENERAL DESCRIPTION The MSM6502B/6512 is a low-power, 4-bit microcontroller implemented in complementary metal-oxide semiconductor technology. The device is ideally suited to battery-powered systems such as watches and game machines because it can directly drive LCDs with up to 108 picture elements. FEATURES ROM RAM Number of instructions Clock oscillation Cycle time Timer interrupt I/O port Input-output port Input port LCD drive Buzzer Interrupt Stack : : : : : : : : : : : : 2000 words ¥ 8 bits 128 words ¥ 4 bits 68 Crystal 32.768 kHz 91.5 ms Dual (16,128 Hz) 2 ports ¥ 4 bits 1 port ¥ 4 bits 108 (4 ¥ 27) picture elements 2000/1000/512 Hz/Soft Three sources (external; two timer sources) Nesting RAM Stack pointer = 7 bits Power down : Halt mode available Operating power supply voltage : 2.4 V to 3.6 V Package options: 56-pin plastic QFP (QFP56-P-910-0.65-K) : (Product name : MSM6502B-¥¥¥GS-K, MSM6512-¥¥¥GS-K) 56-pin plastic QFP (QFP56-P-910-0.65-2K) : (Product name : MSM6502B-¥¥¥GS-2K, MSM6512-¥¥¥GS-2K) ¥¥¥ indicates the code number. 1/12 ¡ Semiconductor BLOCK DIAGRAM INSTRUC– TION DECODER IH R L R O M D A T A PROGRAM MEMORY ROM 2000 ¥ 8bits ACC 4bits C H 8bits ALU L H PCR M L 11bits 11bits H 4bits BUS L 4bits 8bits 8bits H DP L H SP ...