●GENERAL DESCRIPTION
●The OKI MSM80C48/MSM80C49/MSM80C50 are 8-bit, low-power, high-performance micro-controllers 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 working registers
●• External and timer interrupts
●• Two test inputs
●• Built-in 8-bit timer counter
●• Extendable external memory and I/O ports
●• I/O port Input-output port : 2 ports ´ 8 bits
● Data bus input-output port : 1 port ´ 8 bits
●• Single-step execution function
●• Wide range of operating voltage, from + 2.5 V to + 6 V of VCC
●• High noise margin action
●• Compatible with Intel"s 8048, 8049 and 8050
●• Package
● 40-pin plastic DIP (DIP40-P-600-2.54) : (MSM80C48-´´´RS)
● (MSM80C49-´´´RS)
● (MSM80C50-´´´RS)
● (MSM80C35RS)
● (MSM80C39RS)
● (MSM80C40RS)
● 44-pin plastic QFP(QFP44-P-910-0.80-2K) : (MSM80C48-´´´GS-2K)
● (MSM80C49-´´´GS-2K)
● (MSM80C50-´´´GS-2K)
● (MSM80C35GS-2K)
● (MSM80C39GS-2K)
● (MSM80C40GS-2K)
● XXX indicates the code number.
