MSM80C48

E2E1022-27-Y4 ¡ Semiconductor MSM80C48/49/50 MSM80C35/39/40 ¡ Semiconductor CMOS 8-Bit Microcontroller This version: Jan. 1998 MSM80C48/49/50, MSM80C35/39/40 Previous version: Nov. 1996 GENERAL DESCRIPTION The OKI MSM80C48/MSM80C49/MSM80C50 are 8-bit, low-power, high-performance microcontrollers implemented in silicon-gate complementary metal-oxide semiconductor technology. Integrated within these chips are 8K/16K/32K bits of mask program ROM, 512/1024/2048 bits of data RAM, 27 I/O lines, built-in 8 bit timer/counter, and oscillator. Program memory and data paths are byte wide. Eleven new instructions have been added to the NMOS version's instruction set, thereby optimizing power down, port data transfer, decrement and port float functions. Available in 40-pin plastic DIP (RS) or 44-pin plastic flat packages QFP (GSK). FEATURES Lower power consumption enabled by CMOS silicon gate process Completely static operation Improved power-down feature Instruction cycle : 1.36 ms (11 MHz) VCC=4.5 to 6.0 V (MSM80C48/49) 2.5 ms (6 MHz) VCC=3.5 to 6.0 V (MSM80C50) 111 instructions All instructions are usable even during execution of external ROM instructions. Operation facility Addition, logical operations, and decimal adjust Program memory (ROM) : 1K words ¥ 8 bits (MSM80C48) : 2K words ¥ 8 bits (MSM80C49) : 4K words ¥ 8 bits (MSM80C50) Data memory (RAM) : 64 words ¥ 8 bits (MSM80C48) : 128 words ¥ 8 bits (MSM80C49) : 256 words ¥ 8 bits (MSM80C50) Two sets of work...