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• CPU configuration

• 2Kx13 bits on-chip Flash memory
• 80x8 bits on-chip registers (SRAM)
• 128 bytes in-system programmable EEPROM

*Endurance: 1000,000 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 uA, at 3V / 32kHz
• Typically 1.5 uA, during sleep mode

• I/O port configuration

• 4 bidirectional I/O ports: P5, P6, P7 and P8
• 18 I/O pins
• Wake-up port : P6
• High sink port : P6
• 10 programmable pull-high I/O pins
• 7 programmable pull-down I/O pins
• 8 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~16 MHz @ 4.5V~5.5V ;?

DC~8 MHz @ 3V~5.5V ; DC~4 MHz @ 2.2V~5.5V

• ERC mode : DC~16 MHz @ 4.5V~5.5V ;

DC~8 MHz @ 3V~5.5V ; DC~4 MHz @ 2.2V~5.5V

• IRC mode : DC~16 MHz @ 4.5V~5.5V ;?

DC~4 MHz @ 2.2V~5.5V

• Seven available interrupts

• Internal interrupt : 4
• External interrupt : 3

• One set of comparator (offset voltage: smaller than 5 mV)
• 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 only

• 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
• Special Features

• Programmable free running Watchdog Timer
• Power-on voltage detector available (2.0V~2.1V)

• Package Type:

• 20-pin DIP 300mil : EM78F642ND20J/S
• 20-pin SOP 300mil : EM78F642NSO20J/S
• 18-pin DIP 300mil : EM78F642ND18J/S
• 18-pin SOP 300mil : EM78F642NSO18J/S
• 20-pin SSOP 209mil : EM78F642NSS20J/S

Note: Green products do not contain hazardous substances.

? ? ? 芯片資料下載:
? ? ?EM78F642N芯片手冊(cè)