Analog Peripherals
10-Bit ADC (‘F336/8 only)

• Up to 200 ksps
• Up to 20 external single-ended or differential inputs
• VREF from on-chip VREF, external pin or VDD
• Internal or external start of conversion source
• Built-in temperature sensor
• 10-Bit Current Output DAC (‘F336/8 only)

Comparator

• Programmable hysteresis and response time
• Configurable as interrupt or reset source

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
• Low cost, complete development kit

Supply Voltage 2.7 to 3.6 V

• Built-in voltage supply monitor

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

Temperature Range: –40 to +85 °C

Memory

• 768 bytes internal data RAM (256 + 512)
• 16 kB Flash; In-system programmable in 512-byte Sectors (512 bytes are reserved)

Digital Peripherals

• 21 or 17 Port I/O; All 5 V tolerant with high sink current
• Pin-compatible with C8051F330 family of MCUs
• Hardware enhanced UART, SMBus™ (I2C compatible), and enhanced SPI™ serial ports
• Four general purpose 16-bit counter/timers
• 16-Bit programmable counter array (PCA) with three capture/compare modules and enhanced PWM functionality
• Real time clock mode using timer and crystal

Clock Sources

• 24.5 MHz ±2% Oscillator
  • Supports crystal-less UART operation
  • Low-power suspend mode with fast wake time
• 80/20/40/10 kHz low-frequency, low-power oscillator
• 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

20 or 24-Pin QFN (4 x 4 mm)