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• CPU configuration

• 4Kx13 bits on-chip ROM
• 144x8 bits on-chip registers (SRAM)
• 128 bytes In-system programmable EEPROM
• 8-level stacks for subroutine nesting

• I/O port configuration

• Three bidirectional I/O ports
• Wake-up port
• 12 programmable pull-down I/O pins
• 8 programmable pull-high I/O pins
• 4 programmable open-drain I/O pins
• External interrupt : P60

• Operating voltage range: 

• 2.2V~5.5V at -40°C~85°C (commercial)
• 2.2V~5.5V at 0°C~70°C (industrial) 

• Operating frequency range (base on 2 clocks):

• IRC Drift Rate (Vdd @ 3.3V)

• IRC Drift Rate (Temperature: -10°C+40°C)

• One 16-bit Timer/Counter

TC1 : Timer/Counter/Capture

• One 8-bit Timer/Counter

TC3 : Timer/Counter/PDO (Programmable Divider Output) / PWM (Pulse Width Modulation)

• Eight available interrupts:

Internal interrupt: 4

External interrupt: 4

• Seven channels Analog-to-Digital Converter with 12-bit resolution
• Peripheral configuration

8-bit real time clock only (TCC) with selective signal sources, trigger edges, and overflow interrupt

Power down (Sleep) mode

Four programmable Level Voltage Reset (LVR) (LVR) : 3.3V, 3.0V, 2.6V, and 2.0V (POR)

Three security registers to prevent intrusion of Flash memory codes

One configuration register to accommodate user’s requirements

Two clocks per instruction cycle

High EFT immunity

Two sub-frequencies; 128kHz and 16kHz, the 16kHz is provided by dividing the 128kHz

• Single instruction cycle commands
• Five Crystal Range in Oscillator Mode

Crystal Range	Oscillator Mode
20 MHz ~ 12 MHz	HXT2
12 MHz~6 MHz	HXT1
6 MHz ~ 1 MHz	XT
1 MHz ~ 100kHz	LXT1

• Programmable free running Watchdog Timer

• Package Type:

• 16-pin DIP 300mil : EM78F734ND16
• 16-pin SOP 300mil : EM78F734NSO16
• 16-pin SOP 150mil : EM78F734NSO16A
• 16-pin SSOP 150mil: EM78F734NSS16
• 18-pin DIP 300mil : EM78F734ND18
• 18-pin SOP 300mil : EM78F734NSO18
• 20-pin DIP 300 mil: EM78F734ND20
• 20-pin SOP 300mil : EM78F734NSO20
• 20-pin SSOP 209mil : EM78F734NSS20

Note: These are Green products which do not contain hazardous substances.
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