em78f644n ELAN Microelectronics Corp, em78f644n Datasheet - Page 5

• Manufacturer Part Number: em78f644n
• Description: 8-bit Microcontroller
• Manufacturer: ELAN Microelectronics Corp

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Product Specification (V0.1) 05.12.2008
(This specification is subject to change without further notice)
General Description
Features
The EM78F644N 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 256×8-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 EM78F644N 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.
CPU configuration
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I/O port configuration
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Operating voltage range:
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Operating frequency range (base on two clocks):
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Fourteen available interrupts:
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4K×13 bits Flash memory
144×8 bits on chip registers (SRAM)
256 bytes in-system programmable EEPROM
More than 10 years data retention
8-level stacks for subroutine nesting
Less than 2 mA at 5V/4MHz
Typically 20 µA, at 3V/32kHz
Typically 2 µA, during sleep mode
4 bidirectional I/O ports: P5, P6, P7, P8
25 I/O pins
Wake-up port : P6
14 programmable pull-high I/O pins
14 programmable pull-down I/O pins
8 programmable open-drain I/O pins
External interrupt with Wake-up : P60
Crystal mode:
DC ~ 16MHz @ 4.5V
DC ~ 8MHz @ 3V
DC ~ 4MHz @ 2.2V
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
Internal interrupt : 10
External interrupt : 3
*Endurance: 100,000 write/erase cycles
Operating voltage: 2.4V~5.5V at -40°C ~85°C
(Industrial)
Operating voltage: 2.2V~5.5V at 0°C ~70°C
(Commercial)
Green products do not contain hazardous substances.
One set of comparator (offset voltage: smaller than
Two channel Pulse Width Modulation (PWM ) with
Two 8-bit Timer/Counter
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One 16-bit Timer/Counter
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Serial transmitter/receiver interface
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Peripheral configuration
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Single instruction cycle commands
Programmable free running watchdog timer
Package type:
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10 mV)
10-bit resolution
TC1 : Timer/Counter/Capture
TC3 : Timer/Counter/PDO (programmable
TC2 : Timer/Counter/Window
Serial Peripheral Interface (SPI) : Three-wire
Universal Asynchronous Receiver / Transmitter
8-bit real time clock/counter (TCC) with
External interrupt input pin.
2/4/8/16 clocks per instruction cycle selected by
Power down (Sleep) mode
High EFT immunity
24-pin SKDIP 300mil :EM78F644NK24J/S
24-pin SOP 300mil
28-pin SKDIP 300mil :EM78F644NK28J/S
28-pin SOP 300mil
divider output)/PWM (pulse width modulation)
synchronous communication
(UART)
selective signal sources, trigger edges, and
overflow interrupt
code option
8-Bit Microcontroller
:EM78F644NSO24J/S
:EM78F644NSO28J/S
EM78F644N
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