Compatible with MCS51 Products
20 MIPS Throughput at 20 MHz Clock Frequency and 2.4V, 85°C Operating Conditions
Single Clock Cycle per Byte Fetch
2/4K Bytes of In-System Programmable (ISP) Flash Memory
2.4V to 5.5V VCC Operating Range
Fully Static Operation: 0 Hz to 20 MHz
2-level Program Memory Lock
256 x 8 Internal RAM
Hardware Multiplier
15 Programmable I/O Lines
Configurable I/O with Quasi-bidirectional, Input, Push-pull Output, and Open-drain Modes
Enhanced UART with Automatic Address Recognition and Framing Error Detection
Enhanced SPI with Double-buffered Send/Receive
Programmable Watchdog Timer with Software Reset
4-level Interrupt Priority
Analog Comparator with Selectable Interrupt and Debouncing
Two 16-bit Enhanced Timer/Counters with 8-bit PWM
Brown-out Detector and Power-off Flag
Internal Power-on Reset
Low Power Idle and Power-down Modes
Interrupt Recovery from Power-down Mode