FEATURES1. Standard 8051 Instruction set, fast machine cycle
Executes instructions six times faster than the standard 8051.
2. Flash Program Memory
32K Bytes
Support IAP “In Application Programming” (EEPROM like)
Code Protection Capability
10K erase times at least
10 years data retention at least
3. Total 1280 Bytes SRAM (IRAM + XRAM)
256 Bytes IRAM in the 8051 internal data memory area
1024 Bytes XRAM in the 8051 external data memory area (accessed by MOVX Instruction)
4. Four System Clock type selections
Fast clock from 1~18MHz Crystal (FXT)
Fast clock from Internal RC (FRC, 18.432 MHz)
Slow clock from 32768Hz Crystal (SXT)
Slow clock from Internal RC (SRC,80 KHz)
System Clock can be divided by 1/2/4/16 option
5. 8051 Standard Timer – Timer0/1/2
16-bit Timer0, also supports T0O clock output for Buzzer application
16-bit Timer1
16-bit Timer2, also supports T2O clock output for Buzzer application
6. 15-bit Timer3
Clock source is Slow clock
Interrupt period can be clock divided by 32768/16384/8192/128 option
7. UARTs
UART1, 8051 standard UART
UART2, the second UART, supports only mode1 and mode3
8. Three independent 16 bits PWMs with period-adjustment
With PWM0/PWM1/PWM2 Interrupt
9. SPI Interface
Master or Slave mode selectable
Programmable transmit bit rate
Serial clock phase and polarity options
MSB-first or LSB-first selectable
10. I2C interface (Master / Slave)
11. 20-Channel Touch Key (FTK)
Internal reference key
With 4 scanning methods
12. 12-bit ADC with 13 channels External Pin Input and 3 channels Internal Reference Voltage
Internal Reference Voltage: VBG 1.22V @VCC=5V~3V, 25℃
Internal Reference Voltage: 1/4VCC
ADC reference voltage = 2.5V / VCC
13. LCD Driver
1/8 duty
Software controlled COM0~7
1/2 LCD Bias
14. LED Controller/Driver
COM with Dead Time
LED hold option
Brightness uniform / enhancement option
【Bi-Direction matrix (BiD) mode】
4C x 6S, Max. 10 pins up to 48 dots
3groups, 8-level Brightness
【Dot matrix (DMX) mode】
8C x 8S, Max. 9 pins up to 64 dots
8-level Brightness
15. 14 Sources, 4-level priority Interrupt
Timer0/Timer1/Timer2/Timer3 Interrupt
INT0~INT1 pin low level or falling edge Interrupt
INT2~INT9 pin Falling-Edge Interrupt
Port1 Pin Change Interrupt
UART1/UART2 TX/RX Interrupt
ADC/Touch Key Interrupt
SPI Interrupt
I2C interrupt
PWM0/PWM1/PWM2 interrupt
16. Pin Interrupt can Wake up CPU from Power-Down (Halt/Stop) mode
INT0~INT9 Interrupt & Wake-up
Each Port1 pin can be defined as Interrupt & Wake-up pin (by pin change)
Note: Chip cannot enter Halt/Stop Mode if INTn pin is low and wakeup is enabled. (INTn=0 and EXn=1, n=0~9)
17. Max. 26 Programmable I/O pins
CMOS Output
Pseudo-Open-Drain, or Open-Drain Output
Schmitt Trigger Input
Pin Pull-up can be Enabled or Disabled
All pin with High sink (80mA@VCC=5V，VOL=0.1VCC)
18. Independent RC Oscillating Watch Dog Timer
400ms/200ms/100ms/50ms selectable WDT timeout options
19. Five types Reset
Power on Reset
Selectable External Pin Reset
Selectable Watch Dog Reset
Software Command Reset
Selectable Low Voltage Reset
20. 16-level Low Voltage Detect
4.3V/4.2V/4.0V/3.9V/3.8V/3.7V/3.6V/3.4V/
3.3V/3.2V/3.1V/3.0V/2.8V/2.7V/2.6V/2.5V
21. 8-level Low Voltage Reset
4.2V/3.9V/3.7V/3.4V/3.2V/3.0V/2.7V/2.5V
22. Five Power Operation Modes
Fast/Slow/Idle/Halt/Stop mode
23. Integrated 16-bit Cyclic Redundancy Check function
24. Multiplication and division
8 bit Multiplier & Divider (standard 8051)
16 bits Multiplier & Divider
32 bits ÷ 16 bits hardware Divider
25. On-chip Debug/ICE interface
Use P3.0/P3.1 pin or P0.0/P0.1 pin
Share with ICP programming pin
26. Operating Voltage and Current
VCC =2.5V ~ 5.5V @FSYSCLK=18.432MHz
ICC =7.7µA @Stop mode, VCC=5V
ICC =1.5µA @Stop mode, VCC=3V
ICC =11µA @Halt mode, VCC=5V
ICC =4.0µA @Halt mode, VCC=3V
ICC =150µA @Idle mode, VCC=5V
27. Operating Temperature Range
–40°C ~ +105°C
28. Package Types
28-pin SOP (300 mil)
20-pin SOP (300 mil)
16-pin SOP (150 mil)