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EM78F641N

The EM78F641N 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 features, the EM78F641N 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 his development code.

CPU configuration

1K×13 bits on-chip Flash memory

48×8 bits on-chip registers (SRAM)

128 bytes in-system programmable EEPROM
* Endurance: 1,000,000 write/erase cycles

More than 10 years data retention

8-level stacks for subroutine nesting

3 programmable Level Voltage Reset LVR : 4.0V, 3.5V, 2.7V

Less than 1.5 mA at 5V / 4 MHz

Typically 20 μA, at 3V / 32kHz

Typically 1.5 μA, during sleep mode

I/O port configuration

4 bidirectional I/O ports: P5, P6 and P8

14 I/O pins

Wake-up port : P6

High sink port : P6

6 programmable pull-high I/O pins

5 programmable pull-down I/O pins

6 programmable open-drain I/O pins

External interrupt with Wake-up : P60

Operating voltage range

2.4V~5.5V at -40°C~85°C (Industrial)

2.2V~5.5V at 0°C~70°C (Commercial)

Operating frequency range (base on two clocks)

Crystal mode : DC~16MHz @ 4.5V~5.5V ; DC~8MHz @ 3V~5.5V ; DC~4MHz @ 2.2V~5.5V

ERC mode : DC~16MHz @ 4.5V~5.5V ; DC~8MHz @ 3V~5.5V ; DC~4MHz @ 2.2V~5.5V

IRC mode : DC~16MHz @ 4.5V~5.5V ; DC~4MHz @ 2.2V~5.5V
　

Internal RC Frequency	Drift Rate
Internal RC Frequency	Temperature (-40°C~85°C)	Voltage (2.4V~5.5V)	Process	Total
4 MHz	± 3%	± 5%	± 2.5%	± 10.5%
16 MHz	± 3%	± 5%	± 2.5%	± 10.5%
8 MHz	± 3%	± 5%	± 2.5%	± 10.5%

Five available interrupts

Internal interrupt : 2

External interrupt : 3

One set of comparator (offset voltage: smaller than 5 mV)
One 8-bit Timer/Counter

TC3 : Timer/Counter/PDO (programmable divider output)/PWM (pulse width modulation)

Peripheral configuration

8-bit real timer clock only (TCC) with overflow interrupt

External interrupt input pin

2/4/8/16 clocks per instruction cycle selected by code option

Power down (Sleep) mode

High EFT immunity

Single instruction cycle commands
Special Features

Programmable free running Watchdog Timer

Power-on voltage detector available (2.0V ~ 2.1V)

Package Type:

10-pin MSOP 118mil : EM78F641NMS10J/S

16-pin DIP 300mil : EM78F641NAD16J/S

16-pin SOP 150mil : EM78F641NASO16AJ/S

Note: Green products do not contain hazardous substances.