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 (<0.5 μA)

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 3.6 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

11-Pin Quad Flat No-Lead (QFN) RoHS Package

• 3 x 3 mm PWB footprint