EM78458AM datasheet(7/62 Pages) EMC

7 / 62 page

EM78458/459

8-Bit Microcontroller with MASK ROM

Product Specification (V1.4) 05.27.2005

• 1

(This specification is subject to change without further notice)

GENERAL DESCRIPTION

EM78458 and EM78459 are 8-bit microprocessors designed and developed with

low-power and high-speed CMOS technology. There is a 4K*13-bit Read Only Memory

(ROM) within it.

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

× 13 bits on chip ROM

× 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

EM78458AM Datasheet(PDF) 7 Page - ELAN Microelectronics Corp