EM78P342N数据手册Elan中文资料规格书

描述 Description

The EM78P342N is an 8-bit microprocessor designed and developed with low-power and high-speed CMOS technology. The device has an on-chip 2k x 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 words are also available to meet user's requirements.With its enhanced OTP-ROM features, the EM78P342N 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.

特性 Features

CPU Configuration
• 2K x 13 bits on-chip ROM
• 80 bytes on-chip registers (SRAM)
• 8-level stacks for subroutine nesting
• 4 programmable level voltage detector (LVD): 4.5V, 4.0V, 3.3V, 2.2V
• 3 programmable level voltage reset (LVR): 4.0V, 3.5V, 2.4V
• Less than 1.5 mA at 5V/4MHz
• Typically 15 μA at 3V/32kHz
• Typically 2 μA 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
• 16 programmable pull-high I/O pins
• 8 programmable open-drain I/O pins
• 4 programmable high-sink current I/O pins
• External interrupt: P60

Operating Voltage and Temperature Range
• 2.1V~5.5V at 0°C~70°C (Commercial Grade)
• 2.3V~5.5V at -40°C~85°C (Industrial Grade)

Operating Frequency Range
• Crystal Mode: DC~16MHz/2clks@4.5V; DC~8MHz/2clks@3V; DC~4MHz/2clks@2.1V
• ERC Mode: DC~16MHz/2clks@4.5V; DC~8MHz/2clks@3V
• IRC Mode: 455kHz, 1MHz, 4MHz, 16MHz ±4%@25°C, 5V

All the four main frequencies can be trimmed by programming with four calibrated bits in the ICE341N Simulator. OTP is auto trimmed by ELAN Writer.

Fast set-up time requires only 800ms (VDD:5V, Crystal: 4MHz, C1/C2: 30pF) in HXT2 mode and 10ms in IRC mode (VDD:5V IRC:4MHz)

Peripheral Configuration
• Easily implemented IR (infrared remote control)
• 8-bit real time clock/counter (TCC) with selective signal sources, trigger edges and overflow interrupt
• 8-bit real time clock/counter (TCCA, TCCC) and 16-bit real time clock/counter (TCCB) with selective signal sources, trigger edges, and overflow interrupt
• 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)

Seven Available Interrupts
• TCC, TCCA, TCCB, TCCC overflow interrupt
• Input-port status changed interrupt (wake-up from sleep mode)
• External interrupt
• ADC completion interrupt
• IR/PWM period match completion
• Comparator output change interrupt
• Low voltage detect (LVD) interrupt

Special Features
• Programmable free running watchdog timer (4.5ms:18ms)
• Power down mode (Sleep mode)
• Selectable oscillation mode
• Power-on voltage detector available (1.7V±0.1V)
• High EFT immunity (better performance at 4 MHz or below)