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   Product Introduction

The EM78P372N is an 8-bit microprocessor designed and developed with low-power and high-speed CMOS technology. The device has an on-chip 2K?13-bit Electrical One Time Programmable Read Only Memory (OTP-ROM). It provides a protection bit to prevent intrusion of user’s OTP memory code. Three Code option bits are also available to meet user’s requirements.

With enhanced OTP-ROM features, the EM78P372N provides a convenient way of developing and verifying user’s programs. Moreover, this OTP device offers the advantages of easy and effective program updates, using development and programming tools. User can avail of the ELAN Writer to easily program his development code.

   Product Features

? CPU configuration

? 2K?13 bits on-chip ROM

? 80?8 bits on-chip registers (SRAM)

? 8-level stacks for subroutine nesting

? Less than 1.5 mA at 5V/4 MHz

? Typically 15 ?A, at 3V/32kHz

? Typically 2 ?A, during sleep mode

? I/O port configuration

? 3 bidirectional I/O ports: P5, P6, P7

? 18 I/O pins

? Wake-up port : P5

? 8 programmable pull-down I/O pins (P50 ~ P57)

? 16 programmable pull-high I/O pins (P50 ~ P57) (P60 ~ P67)

? 8 programmable open-drain I/O pins (P60 ~ P67)

? 14 programmable high-sink current I/O pins (P51 ~P54, P56 ~ P57) (P60 ~ P67)

? External interrupt : P60

? Operating voltage range:

? 2.1V~5.5V at 0?C~70?C (commercial)

? 2.3V~5.5V at -40?C~85?C (industrial)

? Operating frequency range (based on 2 clocks):

? Crystal mode: DC ~ 16 MHz, 4.5V;

DC ~ 8 MHz, 3V; DC ~ 4 MHz, 2.1V

? ERC mode: DC ~ 2 MHz, 2.1V;

? IRC mode

Oscillation mode: 16 MHz, 4 MHz, 1 MHz, 8 MHz

? Fast set-up time requires only 0.8ms (VDD: 5V Crystal: 4 MHz, C1/C2: 15pF) in XT mode and 10 μs in IRC mode (VDD: 5V, IRC: 4 MHz)

? Peripheral configuration

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

? 4 programmable Level Voltage Detector (LVD) : 4.5V, 4.0V, 3.3V, 2.2V

? Power on reset and programmable level voltage reset POR: 1.8V (Default), LVR: 4.0V, 3.5V, 2.7V

? 8-bit multi-channel Analog-to-Digital Converter with 12-bit resolution in Vref mode

? One pair of comparator or OP(offset voltage: smaller than 10mV)

? Two Pulse Width Modulation (PWM) with 8-bit resolution

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