General Description

The EM78P153B is an 8-bit microprocessor designed ａnd developed with low-power ａnd high-speed CMOS technology. The device has an on-chip 1024′13-bit Electrical One Time Programmable Read Only Memory (OTP-ROM). It provides three protection bits to prevent intrusion of user’s OTP memory code. Fifteen code option bits are also available to meet your special requirements.

With enhanced OTP-ROM features, the EM78P153B provides a convenient method of developing ａnd verifying user’s programs. Moreover, this OTP device offers easy ａnd effective program updates with the use of development ａnd programming tools. You can avail of the ELAN Writer to easily program your development codes.

 

Features

CPU configuration 

1K x 13 bits on-chip ROM 

32 x8 bits on-chip registers (SRAM, general purpose) 

5 level stacks for subroutine nesting 

Less than 1.5 mA at 5V/4MHz 

Typically 15μA, at 3V/32kHz 

Typically 1μA, during Sleep mode 

I/O port configuration 

2 bidirectional I/O ports: P5,P6 

12 I/O pins 

Wake-up port: P6 

6 Programmable pull-down I/O pins 

7 programmable pull-high I/O pins 

7 programmable open-drain I/O pins 

External interrupt : P60 

Operating voltage range 

2.3V~5.5V at 0°C~70°C (Commercial Grade) 

Operating frequency range (base on 2 clocks) 

Crystal mode: 

DC ~ 20 MHz / 2clks @ 5V

 

DC ~ 8 MHz / 2clks @ 3V

 

DC ~ 4 MHz / 2clks @ 2.3V

 

The transient point of system frequency between HXT ａnd LXT is 400 kHz.

 

ERC mode 

DC ~ 2 MHz / 2clks @ 2.1V

 

IRC mode: 

Oscillation mode : 4 / 8 / 1 MHz ａnd 455kHz Process Deviation: Type: Max. ± 3% Temperature Deviation: ± 2% (0 ~ 70°C) 

Internal RC Frequency Drift Rate

Temperature( 0°C ~70°C ) Voltage Process Total

4 MHz ±1.5% ±8%@2.3~5.5V ±2% ±11.5%

8 MHz ±1.5% ±8%@3.0~5.5V ±2% ±11.5%

1MHz ±1.5% ±8%@2.3~5.5V ±2% ±11.5%

455kHz ±1.5% ±8%@2.3~5.5V ±2% ±11.5%

Peripheral configuration 

8bit real time clock/counter (TCC) with selective signal sources, trigger edges, ａnd overflow interruptPower on reset ａnd 3 programmable level voltage reset POR: 1.8V (Default), LVR: 4.0, 3.5, 2.7V 2 -/ 4 clocks per instruction cycle selected by code option 

Three Available Interrupts: 

TCC overflow interrupt 

Input-port status changed interrupt (wake-up from sleep mode) 

External interrupt 

Special Features 

Programmable free running watchdog timer 

Power saving Sleep mode 

Selectable Oscillation mode 

Programmable prescaler of oscillator set-up time 

Package type: 

14-pin DIP 300mil : EM78P153BD14J 

14-pin SOP 150mil : EM78P153BSO14J 

10-pin SSOP 150mil : EM78P153BSS10J