MSM6545 - OKI electronic componets

MSM6545 Operatable at 0.9V and Built-in Buzzer Circuit 4-Bit Microcontroller

MSM6545/6575/6545L/6575L is a 4-bit, low-power microcontroller manufactured in a CMOS silicon gate process. The microcontroller can be initialized and operated at a low supply voltage of 0.9 V. This single device contains a crystal oscillator circuit, voltage converter circuits, a time base counter, a ROM, a RAM, a stack RAM, I/O ports, interrupt function co.

Features

• The IC can be initialized and operated even at a low voltage of 0.9 V.
• Low power consumption
• ROM : 4096 words ¥ 17 bits (MSM6545/6545L) 2048 words ¥ 17 bits (MSM6575/6575L)
• RAM : 256 words ¥ 4 bits (MSM6545/6545L) 128 words ¥ 4 bits (MSM6575/6575L)
• I/O port Input-output port : 7 ports ¥ 4 bits Input port : 1 port ¥ 4 bits
• Interrupt functions (real-time interrupt, external interrupt, and serial interrupt)
• Serial I/O port : 8-bit sync communication
• Buzzer output circuit
• 4-bit decimal updown counter
• 73 instructions
• Minimum instruction execution time : 61 ms
• Operation under.