MSM64P164

Features:

Operating range
Operating frequencies : 32.768 kHz, 400 kHz
Operating voltage : 1.5 V/3.0 V selectable by mask option
Low supply current
Operating temperature : 0 to +65 C
Memory space
Internal program memory : 4064 bytes
Internal data memory : 256 nibbles
RC oscillation type A/D converter : 2 channels
Time dividing 2-channel method
Counter A : 1/(104 8) 1
Counter B : 1/214 1
Serial port : Synchronous 8-bit transfer
External clock/internal clock selectableMSB first/LSB first selectable
LCD driver : 34 outputs; duty ratio switchable by software
(1) At 1/4 duty and 1/3 bias : 120 segments (max)
(2) At 1/3 duty and 1/3 bias : 93 segments (max)
(3) At 1/2 duty and 1/2 bias : 64 segments (max)
Buzzer driver : 1 output (4 output modes selectable)
Capture circuit : 2 channels (256 Hz, 128 Hz, 64 Hz, 32 Hz)
Watchdog timer
I/O port
Input-output port : 3 ports 4 bits
Input port : 1 port 4 bits
Output port : 1 port 4 bits
Interrupt sources
External interrupt : 2 sources
Internal interrupt : 8 sources
Package:
80-pin plastic QFP (QFP80-P-1420-0.80-BK) : (Product name : MSM64P164-GS-BK)
indicates a code number.


Pinout




Description

The MSM64P164 is a one-time-programmable ROM-version product, which has one-timePROM (OTP) as internal program memory.  On the other hand, the MSM64164C is a mask ROM-version product, which has mask ROM as internal program memory.
Unlike the mask ROM-version MSM64164C, which has a P-well CMOS structure, the MSM64P164has been fabricated with the N-well CMOS-structured EEPROM process technology.  Therefore,the MSM64P164 differs from the MSM64164C in the polarity of the power supply for LCD biasgeneration and 5 V interface, and in the external circuit structure.
Unlike the mask ROM-version product, the MSM64P164 cannot be supplied in the form of a chip.The MSM64P164 is an OTP-version product used to evaluate an application program.
The MSM64P164 has two operation modes, microcontroller operation mode and PROM mode.The microcontroller operation mode is used to operate the MSM64P164 like a mask ROM-versionproduct and the PROM mode is used to program or read the PROM.