Product Feature
Main Features:
1. 8 bit RISC CPU
2. ROM space(OTP)
Five-level deep hardware stack
1K*14 ROM (OTP): programming once
0.5K*14 ROM (OTP): programming twice
3. RAM space
48 bit universal data hosting space
4. eleven I/O interface and one open-drain I/O interface
4 bit P1 interface
8 bit P1 interface, P13 as open-drain I/O interface
5. 3 kinds of operation mode
High-frequency operation mode: the system running under high frequency timer
Low-frequency operation mode: the system running under low frequency timer
Sleeping mode: CPU stops running, the high frequency oscillator stops working
6. Timer
Watch-dog timer of internal natural vibration style
One 8-bit timer with RTC function
One 8-bit timer with buzzer&3 PWM function
7. Interrupt
Timer 0/1 interrupt
External interrupt
Keyboard interrupt
8. Oscillation mode of the clock
Internal high-frequency oscillator
Internal low-frequency oscillator
External high-frequency crystal oscillator
External low-frequency crystal oscillator(32768HZ)
9. Rest of the external pin
10. 16 kinds of low voltage reset
11. 16 kinds of low voltage test
12. Working voltage
2.7V-5.5V (Fcpu=0~8MHZ)
2.4V~5.5V(Fcpu=0~4MHZ)
2.0V~5.5V(Fcpu=0~2MHZ)
2.0V~5.5V(Fcpu=0~1MHZ)
2.0V~5.5V(Fcpu=0~455MHZ)
1.8V~5.5V(Fcpu=0~32MHZ)
13. Package: DIP14, SOP14, DIP8, SOP8, SOT23-6