• CPU Configuration

• Support 4K15 bits program ROM
• 304 8 bits on-chip registers (SRAM)
• More than 10 years data retention
• 8 level stacks for subroutine nesting
• Dual clock operation mode
• Four programmable Level Voltage Detector
  (LVD) : 4.5V, 4V, 3.3V, 2.2V
• Four programmable Level Voltage Reset 
  (LVR) : 4.0V, 3.5V, 2.7V, 1.8V (POR)
• Power on reset level Voltage: 1.8V~1.9V
• Less than 1.0 mA at 5V/4MHz
• Typically 15 uA, at 3V/16kHz
• Typically 2 uA, during sleep mode
• Four operation mode

• I/O Port Configuration

• 6 bi-directional I/O ports : P5, P6 and P7
• 22 I/O pins
• 22 Programmable open-drain I/O pins
• 21 programmable pull-high I/O pins
• 21 programmable pull-down I/O pins
• 21 programmable high sink/drive I/O pins
• External interrupt : INT0

• Operating Voltage and Temperature Range:

• 2.1V~5.5V at 0~70 °C (commercial)
• 2.3V~5.5V at -40~85 °C (industrial)

• Operating Mode: 

• Crystal mode:

                                      DC ~ 16MHz at 5V

                                      DC ~ 8MHz at 3V

                                      DC ~ 4MHz at 2.1V

• IRC mode: 

                                      DC ~ 8MHz/2clks at 3V

                                      DC ~ 4MHz/2clks at 2.1V

Internal RC Frequency	Drift Rate
Temperature(-40°C~85°C)	Voltage(2.1V~5.5V)	Process	Total
4 MHz	±2%	±1%	±1%	±5%
16 MHz	±2%	±1%	±1%	±5%
8 MHz	±2%	±1%	±1%	±5%
1 MHz	±2%	±1%	±1%	±5%

• Sub Clock: 

                                      IRC mode: 16kHz/32kHz

• Peripheral Configuration:

• 8-bit real time clock/counter (TCC) with selective signal sources and trigger edges
• 14+2-channels Analog-to-Digital Converter with 12-bit resolution+ 1 internal reference for Vref+.
• Three 8-bit Timer/Counter
      TC1：Timer/Counter/capture//window/buzzer/PWM/PDO (programmable divider output) Mode selection
• External interrupt wake-up. Function: rising or falling edge interrupt
• I2C-bus available. Function; 7/10-bit address,8-bit data transmit/receive mode
• Port 56 input status change wake-up
• Three 16 bits PWM
• One Comparator/OP

• Package Type:

• 18 pin DIP 300mil : EM78P374ND18J/S
• 18 pin SOP 300mil : EM78P374NSO18J/S
• 20 pin DIP 300mil : EM78P374ND20J/S
• 20 pin SOP 300mil : EM78P374NSO20J/S
• 20 pin SSOP 209mil : EM78P374NSS20J/S
• 24 pin skinny DIP 300mil : EM78P374NK24J/S
• 24 pin SOP 300mil : EM78P374NSO24J/S
• 24 pin SSOP 150mil : EM78P374NSS24J/S

Note: Green products do not contain hazardous .substances.