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OTP GPIO Type MCU Series

EM78447S

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一般描述

特征

General Description

EM78156E is an 8-bit microprocessor with low-power and high-speed CMOS technology. Integrated into a single chip are on-chip watchdog timer (WDT), RAM, ROM, real time clock/counter, external and interrupt, power down mode, and tri-state I/O.

Features

Operating voltage range : 2.3V~5.5V

Operating temperature range: 0C~70C

Operating frequency rang (base on 2 clocks ):
* Crystal mode: DC~20MHz at 5V, DC~8MHz at 3V, DC~4MHz at 2.3V.
* ERC mode: DC~4MHz at 5V, DC~4MHz at 3V, DC~4MHz at 2.3V.

Low power consumption:
* Less then 2.0 mA at 5V/4MHz
* Typically 15 µA at 3V/32KHz
* Typically 1 µA during sleep mode

1K x 13 bits on chip ROM

One configuration register to accommodate userˇs requirements

48⊙ 8 bits on chip registers (SRAM, general purpose register)

2 bi-directional I/O ports

5 level stacks for subroutine nesting

8-bit real time clock/counter (TCC) with selective signal sources, trigger edges, and
overflow interrupt

Two clocks per instruction cycle

Power down (SLEEP) mode

Three available interruptions
* TCC overflow interrupt
* Input-port status changed interrupt (wake up from sleep mode)
* External interrupt

Programmable free running watchdog timer

8 programmable pull-high pins

7 programmable pull-down pins

8 programmable open-drain pins

2 programmable R-option pins

Package types:
* 18 pin DIP 300mil : EM78156E
* 18 pin SOP(SOIC) 300mil : EM78156E
* 20 pin SSOP 209mil : EM78156E
* 20 pin SSOP 209mil : EM78156E

99.9% single instruction cycle commands

The transient point of system frequency between HXT and LXT is around 400KHz