The EM78F651N is an 8-bit microprocessor designed and developed with low-power, high-speed CMOS technology and high noise immunity. It has a built-in 1K x 13-bit Electrical Flash Memory & 128 x 8-bit in system programmable EEPROM. It provides three protection bits to prevent intrusion of user's Flash memory code. Twelve option bits are also available to meet user's requirements.

With its Flash-ROM feature, the EM78F651N 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. User can avail of the ELAN Writer to easily program his development code.

Errata

Features

• Operating voltage: 2.2V ~ 5.5V
• Operating temperature: -40°C ~ 85°C
• Endurance 100K write/erase cycles
• More than 10 years data retention
• Operating frequency range (base on 2 clocks):
  * Crystal mode: DC ~ 20MHz at 5V, DC ~ 8MHz at 3V, DC ~ 4MHz at 2.2V
  * ERC mode: DC ~ 16MHz at 5V, DC ~ 8MHz at 3V, DC ~ 4MHz at 2.2V
  * IRC mode: DC ~ 16MHz at 4.5 ~ 5.5V, DC ~ 4MHz at 2.2V ~ 5.5V
• Low power consumption:
  * Less than 2 mA at 5V/4MHz
  * 20 mA Typical at 3V/32kHz
  * 2 mA Typical, during sleep mode
• 1K x 13 bits on-chip ROM
• 4 programmable Level Voltage Detector (LVD)
  * Vdd power monitor and support low voltage detector interrupt flag
• Three security registers to prevent intrusion of Flash memory codes
• One configuration register to accommodate user's requirements
• 80 x 8 bits on-chip registers (SRAM, general purpose register)
• 128 bytes in-system programmable EEPROM
  * Endurance : 100,000 write/erase cycles
• 2 bidirectional I/O ports(EM78F651NA : 10 I/O pins, EM7F166NB : 12 I/O pins, EM7F166NC/D : 14 I/O pins)
• 5-level stacks for subroutine nesting
• 8-bit real time clock/counter (TCC) with selective signal sources, trigger edges, and overflow interrupt
• 2/4/8/16 clocks per instruction cycle select by code option
• Power down (Sleep) mode
• Three available interruptions
  * TCC overflow interrupt
  * Input-port status changed interrupt (wake up from sleep mode)
  * External interrupt
• Programmable free running watchdog timer
• 8 programmable pull-high pins
• 8 programmable pull-down pins
• 8 programmable open-drain pins
• Package types:
  * 14 pin DIP 300mil: EM78F651NAP
  * 14 pin SOP 150mil: EM78F651NAM
  * 16 pin DIP 300mil: EM78F651NBP
  * 16 pin SOP 150mil: EM78F651NBSM
  * 16 pin SOP 300mil: EM78F651NBM
  * 18 pin DIP 300mil: EM78F651NCP
  * 18 pin SOP 300mil: EM78F651NCM
  * 20 pin SSOP 209mil: EM78F651NDKM
  * 20 pin DIP 300mil : EM78F651NDP
• Single instruction cycle commands
• WDT enable IC current ~ 0.3mA at 3V
• WDT enable in sleep mod IC current ~ 0.6mA at 5V
• Four Crystal range in Oscillator Mode

  Crystal Range	Oscillator Mode
  20MHz ~ 6MHz	HXT
  6MHz ~ 1MHz	XT
  1MHz ~ 100KHz	LXT1
  32.768KHz	LXT2