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Analog Peripherals

10-Bit ADC

- ±1 LSB INL; no missing codes

- Programmable throughput up to 200 ksps

- Up to 13 external inputs; programmable as single-ended or differential

- Built-in temperature sensor (±3 °C)

Two Comparators

Internal Voltage Reference: 2.4 V

POR/Brown-out Detector

USB Function Controller

- USB specification 2.0 compliant

- Full-speed (12 Mbps) or low-speed (1.5 Mbps) operation

- Integrated clock recovery; no external crystal required for either fullspeed or low-speed operation

- Supports eight flexible endpoints

- Dedicated 1 kB USB buffer memory

- Integrated transceiver; no external resistors required

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, registers, and USB memory

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

Operating Voltage: 2.7 to 5.25 V

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

- 1280 bytes data RAM

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

Digital Peripherals

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

- Hardware SMBus? (I2C? compatible), SPI?, and UART serial ports available concurrently

- Programmable 16-bit counter/timer array with five capture/compare modules

- 4 general-purpose 16-bit counter/timers

Clock Sources

- Internal oscillator: 0.25 accuracy with clock recovery enabled; supports all USB and UART modes

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

- On-chip clock multiplier for USB controller

Voltage Regulator

- On-chip voltage regulator supports USB bus-powered operation

- Regulator bypass mode supports USB self-powered operation

Package

- 28-pin QFN (lead-free package)a-93619-pass