台湾义隆EM78P459

General

Description

EM78P458

and EM78P459 are 8-bit microprocessors designed and developed with low-power and

high-speed CMOS technology. It is equipped with a 4K x 13-bit Electrical One

Time Programmable Read Only Memory (OTP-ROM). With its OTP-ROM feature, it is

able to offer a convenient way of developing and verifying user’s programs.

Moreover, user can take advantage of EMC Writer to easily program his

development code.

Features

Operating voltage range: 2.3V~5.5V Operating temperature range: 0°C~70°C Operating frequency range(base on 2 clocks):

* Crystal mode: DC ~

20MHz/2clks,5V; DC ~ 8MHz/2clks,3V

* RC mode: DC ~ 4MHz/2clks,5V; DC ~

4MHz/2clks,3V Low power consumption:

* Less than 1.5 mA at 5V/4MHz

* Typically 15

µA, at 3V/32KHz

* Typically 1 µA, during sleep mode 4K x 13 bits on chip ROM 84 x 8 bits on chip registers (SRAM) 2 bi-directional I/O ports 8 level stacks for subroutine nesting 8-bit real time clock/counter (TCC) with selective signal sources, trigger

edges, and overflow interrupt 8-bit multichannel Analog-to-Digital Converter with 8-bit resolution Dual Pulse Width Modulation (PWM ) with 10-bit resolution One pair of comparators Power-down (SLEEP) mode Six available interruptions

* TCC overflow interrupt

* Input-port

status changed interrupt (wake up from the sleep mode)

* External

interrupt

* ADC completion interrupt

* PWM period match completion

*

Comparator high interrupt Programmable free running watchdog timer 8 Programmable pull-down I/O pins 7 programmable pull-high I/O pins 8 programmable open-drain I/O pins Two clocks per instruction cycle Package types:

* 18 pin DIP 300mil : EM78P458BP

* 18 pin SOP 300mil :

EM78P458BM

* 20 pin DIP 300mil : EM78P458AP

* 20 pin SOP 300mil :

EM78P458AM

* 24 pin skinny DIP 300mil : EM78P459AK