EM78F651N
8-Bit Microcontroller
1 General Description
The EM78F651N is an 8-bit microprocessor designed and developed with low-power, high-speed CMOS technology
and high noise immunity. It has an on-chip 1K×13-bit Electrical Flash Memory and 128×8-bit in system programmable
EEPROM. It provides three protection bits to prevent intrusion of user’s Flash memory code. Twelve Code option bits
are also available to meet user’s requirements.
With its enhanced 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.
2 Features
Peripheral configuration
CPU configuration
• 8-bit real time clock/counter (TCC) with selective signal
• 1K×13 bits on chip ROM
sources, trigger edges, and overflow interrupt
• 80×8 bits on chip registers (SRAM)
• Power down (Sleep) mode
*Vdd power monitor and supports low voltage detector
interrupt flag
•
128 bytes in-system programmable EEPROM
*Endurance: 100,000 write/erase cycles
• More than 10 years data retention
• 5-level stacks for subroutine nesting
• Less than 2 mA at 5V/4MHz
• Typically 20 µA, at 3V/32kHz
• Typically 2 µA, during sleep mode
I/O port configuration
• 4 programmable Level Voltage Detector (LVD)
• Three security registers to prevent intrusion of Flash
memory codes
• One configuration register to accommodate user’s
requirements
• 2/4/8/16 clocks per instruction cycle selected by code
option
• 2 bidirectional I/O ports
• Wake-up port : P6
Single instruction cycle commands
Four Crystal range in Oscillator Mode
• 8 Programmable pull-down I/O pins
• 8 programmable pull-high I/O pins
• 8 programmable open-drain I/O pins
• External interrupt : P60
Crystal Range
20MHz ~ 6MHz
6MHz ~ 1MHz
1MHz ~ 100kHz
32.768kHz
Oscillator Mode
HXT
XT
Operating voltage range:
LXT1
LXT2
• Operating voltage: 2.2V~5.5V at -40°C ~85°C
(Industrial)
Operating frequency range (base on two clocks):
Programmable free running watchdog timer
Package type:
• Crystal mode:
DC ~ 20MHz @ 5V
DC ~ 8MHz @ 3V
DC ~ 4MHz @ 2.2V
• 14-pin DIP 300mil
• 14-pin SOP 150mil
• 16-pin DIP 300mil
• 16-pin SOP 300mil
• 18-pin DIP 300 mil
• 18-pin SOP 300mil
• 20-pin DIP 300mil
• 20-pin SSOP 209mil
:
:
:
:
:
:
:
:
EM78F651NAPxS/xJ
EM78F651NAMxS/xJ
EM78F651NABPxS/xJ
EM78F651NABMxS/xJ
EM78F651NCPxS/xJ
EM78F651NCMxS/xJ
EM78F651NDPxS/xJ
EM78F651NDKMxS/XJ
• ERC mode:
DC ~ 16MHz @ 5V
DC ~ 8MHz @ 3V
DC ~ 4MHz @ 2.2V
• IRC mode:
DC ~ 16MHz @ 4.5V~5.5V
DC ~ 4MHz @ 2.2V~5.5V
Three available interrupts:
Green products do not contain hazardous substances.
• TCC overflow interrupt
• Input-port status changed interrupt (wake-up from
sleep mode)
• External interrupt
Product Specification (V1.1) 10.20.2006
(This specification is subject to change without further notice)
• 1
ELAN [ ELAN MICROELECTRONICS CORP ]
