Analog Peripherals

8-Bit ADC

   - ±1/2 LSB INL; no missing codes

   - Programmable throughput up to 100 ksps

   - 32 external inputs (each port I/O can be configured as an ADC input on the-fly)

   - Programmable amplifier gain: 16, 8, 4, 2, 1, 0.5

   - Data-dependent windowed interrupt generator

   - VREF from external pin or VDD

Two comparators

   - Programmable hysteresis

   - Configurable to generate interrupts or reset

VDD Monitor and Brown-out Detector

On-Chip JTAG Debug

   - On-chip emulation circuitry facilitates full-speed, non-intrusive, in-circuit emulation

   - Supports breakpoints, single stepping, watchpoints, inspect/modify memory, and registers

   - Superior performance to emulation systems using ICE-chips, target pods, and sockets

   - Fully compliant with IEEE 1149.1 specification

Supply Voltage: 2.7 to 3.6 V

   - Typical operating current: 9 mA at 25 MHz

   - Typical stop mode current: <0.1 uA

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 system clock

   - Expanded interrupt handler; up to 21 interrupt sources Memory

   - 256 bytes data RAM

   - 8 kB Flash; in-system programmable in 512 byte sectors (512 bytes are reserved)

Digital Peripherals

   - 22 port I/O; all are 5 V tolerant

   - Hardware SPI™ and UART serial ports available concurrently

   - 3 general-purpose 16-bit counter/timers

   - Dedicated watchdog timer; bidirectional reset

Clock Sources

   - Internal programmable oscillator: 2–16 MHz

   - External oscillator: Crystal, RC, C, or Clock

   - Can switch between clock sources on-the-fly

Package

   - 32-pin LQFP (standard lead and lead-free packages)

Ordering Part Numbers

   - Lead-free package: C8051F221-GQ

   - Standard package: C8051F221