Analog Peripherals
8-Bit ADC ('F300/2 only)
Up to 500 ksps
Up to 8 external inputs
Programmable amplifier gains of 4, 2, 1, & 0.5
VREF from external pin or VDD
Built-in temperature sensor
External conversion start input

Comparator
Programmable hysteresis and response time
Configurable as interrupt or reset source
Low current (
On-chip Debug
On-chip debug circuitry facilitates full speed, non-intrusive in-system debug (no emulator required)
Provides breakpoints, single stepping, inspect/modify memory and registers
Superior performance to emulation systems using ICE-chips, target pods, and sockets
Complete development kit

Supply Voltage 2.7 to 5 V
Typical operating current: 6.6 mA @ 25 MHz; 14 µA @ 32 kHz
Typical stop mode current: 0.1 µA
Temperature range: –40 to +85°C

High Speed 8051 µc Core
Pipelined instruction architecture; executes 70% of instructions in 1 or 2 system clocks
Up to 25 MIPS throughput with 25 MHz clock
Expanded interrupt handler

Memory
256 bytes internal data RAM
Up to 8 kB (‘F300/1/2/3), 4 kB (‘F304), or 2 kB (‘F305) Flash; 512 bytes are reserved in the 8 kB devices

Digital Peripherals
8 Port I/O; All 5 V tolerant with high sink current
Hardware enhanced UART and SMBus serial ports
Three general-purpose 16-bit counter/timers
16-bit programmable counter array (PCA) with three capture/compare modules
Real time clock mode using PCA or timer and external clock source

Clock Sources
Internal oscillator: 24.5 MHz with ±2% accuracy supports UART operation
External oscillator: Crystal, RC, C, or clock (1 or 2 pin modes)
Can switch between clock sources on-the-fly; Useful in power saving modes