EM78F734N数据手册Elan中文资料规格书

描述 Description

The EM78F734N is an 8-bit microprocessor designed and developed with low-power, high-speed CMOS technology and high noise immunity. It has an on-chip 4K × 13-bit Electrical Flash Memory and 128 bytes In-system programmable EEPROM. It provides three protection bits to prevent intrusion of user’s Flash memory code. With its enhanced Flash-ROM feature, the EM78F734N provides a convenient way of developing and verifying user’s programs. Moreover, this Flash-ROM device offers the advantages of easy and effective program updates, using development and programming tools. Users can avail of the ELAN Writer to easily program their development codes.

特性 Features

CPU Configuration
• 4K x 13 bits on-chip ROM
• 144 bytes on-chip registers (SRAM)
• 128 bytes In-system programmable EEPROM
• 8-level stacks for subroutine nesting

I/O Port Configuration
• Three bidirectional I/O ports
• Wake-up port
• 12 programmable pull-down I/O pins
• 8 programmable pull-high I/O pins
• 4 programmable open-drain I/O pins
• External interrupt: P60

Operating Voltage Range
• 2.2V~5.5V at -40°C~85°C (Commercial Grade)
• 2.2V~5.5V at 0°C~70°C (Industrial Grade)

Operating Frequency Range
• High Internal RC oscillator (HIRC): 455KHz, 1MHz, 4MHz & 8MHz
• Low Internal RC oscillator (LIRC): 128KHz & 16KHz, which is provided by dividing the 128kHz

One 16-bit Timer/Counter
• TC1: Timer/Counter/Capture

One 8-bit Timer/Counter
• TC3: Timer/Counter/PDO (Programmable Divider Output) /PWM (Pulse Width Modulation)

Eight Available Interrupts
• Internal interrupt: 4
• External interrupt: 4

7-channels Analog-to-Digital Converter with 12-bit Resolution

Peripheral Configuration
• 8-bit real time clock only (TCC) with selective signal sources, trigger edges, and overflow interrupt
• Power down (Sleep) mode
• Four programmable Level Voltage Reset (LVR): 3.3V, 3.0V, 2.6V, and 2.0V (POR)
• Three security registers to prevent intrusion of Flash memory codes
• One configuration register to accommodate user’s requirements
• Two clocks per instruction cycle
• High EFT immunity

Single Instruction Cycle Commands

Five Crystal Range in Oscillator Mode
• HXT2: 20MHz~12MHz
• HXT1: 12MHz~6MHz
• XT: 6MHz~1MHz
• LXT1: 1MHz~100kHz
• LXT2: 32.768KHz

Programmable Free Running Watchdog Timer