Features
- Enhanced 8051 microcontroller with reduced
instruction cycle time (up to 12 times 80C51)
- Up to 8 MHz flexible CPU frequency
- Internal 32 MHz Clock Generator (IHRC),
1 MHz to 16 MHz crystal, and external
synchronous clock source selections
- Real-time clock with 32.768 kHz crystal
- 16 KB non-volatile flash memory (IROM) with
in-system program support
- 256 bytes internal RAM (IRAM)
- 1 KB external RAM (XRAM)
- 19 interrupt sources with priority levels
control and unique interrupt vectors
- 16 internal interrupts
- 3 external interrupts: INT0, INT1, INT2
- Hardware Multiplication/Division Unit
- 2 set of DPTR

Applications
- Brushless DC motor
- Home automation
- 2 set 8/16-bit timers with 4 operation modes
- 1 set 16-bit timers with 4 comparison output
(PWM) and capture channels
- 3 set 16-bit PWM generators:
each PWM generator has 2 output channels
with inverters and dead-band control
- 12-bit SAR ADC with 12 external and 3 internal
channels, and 4 internal reference voltages
- SPI, UART, I2C interface with SMBus Support
- On-Chip Debug Support:
Single-wire debug interface
5 hardware breakpoints
Unlimited software breakpoints
ROM data security/protection
- Watchdog and programmable external reset
- 1.8/2.4/3.3-V low voltage detectors
- Wide supply voltage (1.8 V – 5.5 V) and
temperature (-40 °C to 85 °C) range