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