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• CPU configuration

• 4K x 13 bits Flash memory
• 144 x 8 bits on chip registers (SRAM)
• 256 bytes in-system programmable EEPROM?

• Endurance: 100,000 write/erase cycles

• More than 10 years data retention
• 8-level stacks for subroutine nesting
• Less than 2 mA at 5V/4MHz
• Typically 20 uA, at 3V/32kHz
• Typically 2 uA, during sleep mode

• I/O port configuration

• 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

• Operating voltage range:

• Operating voltage: 2.4V~5.5V at -40°C ~85°C (Industrial)
• Operating voltage: 2.2V~5.5V at 0°C ~70°C (Commercial)

• Operating frequency range (base on two clocks):

• 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

• Fourteen available interrupts:

• Internal interrupt : 10
• External interrupt : 3

• One set of comparator (offset voltage: smaller than 10 mV)
• Two channel Pulse Width Modulation (PWM ) with 10-bit resolution
• Two 8-bit Timer/Counter

• TC1 : Timer/Counter/Capture
• TC3 : Timer/Counter/PDO (programmable divider output)/PWM (pulse width modulation)

• One 16-bit Timer/Counter

• TC2 : Timer/Counter/Window

• Serial transmitter/receiver interface

• Serial Peripheral Interface (SPI) : Three-wire synchronous communication
• Universal Asynchronous Receiver / Transmitter (UART)

• Peripheral configuration?

• 8-bit real time clock/counter (TCC) with selective signal sources, trigger edges, and 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
• Programmable free running watchdog timer
• Package type:?

• 24-pin SKDIP 300mil :EM78F644NK24J/S
• 24-pin SOP 300mil :EM78F644NSO24J/S
• 28-pin SKDIP 300mil :EM78F644NK28J/S
• 28-pin SOP 300mil :EM78F644NSO28J/S

Green products do not contain hazardous substances.

? ? ? 芯片資料下載:
? ? ?EM78F644N芯片手冊