EM78P870数据手册Elan中文资料规格书

描述 Description

The EM78P870 is an 8-bit RISC type microprocessor with low power, high speed CMOS technology. There are 32K x 13 bits Electrical One Time Programmable Read Only Memory (OTP-ROM) within it. Integrated onto a single chip are on_chip watchdog (WDT), RAM, programmable real time clock /counter, internal interrupt, power down mode, LCD driver, build-in KEY TONE clock generation, Programming Tone generators, Serial Peripheral Interface(SPI), comparator and tri-state I/O. The EM78P870 provides a single chip solution to design a message_display.

特性 Features

CPUOperating voltage range : 2.5V°5.5V 2.2V~5.5V(Normal mode), 2.0V~5.5V(Green mode)
32K x 13 on chip Program Electrical One Time Programmable Read Only Memory (OTP-ROM)
256K x 8 on chip data ROM. (2.5V ~ 5.5V for main clock 3.5826MHz)
4K x 8 on chip data RAM
144 byte working register
Up to 51 bi-directional tri-state I/O ports (32 shared with LCD Segment pins)
IO with internal Pull high, wake-up and interrupt functions
STACK: 32 level stack for subroutine nesting
TCC: 8-bit real time clock/counter (TCC) with 8-bit prescaler
COUNTER1: 8-bit counter with 8-bit prescaler can be an interrupt source
COUNTER2: 8-bit counter with 8-bit prescaler can be an interrupt source
Watch Dog : Programmable free running on chip watchdog timer
CPU modes: