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Analog Peripherals

10-Bit ADC (C8051T620/320/321 only)

- Up to 500 ksps

- Up to 21 external inputs

- VREF from on-chip VREF, external pin, Internal 1.8 V Regulator or VDD

- Internal or external start of conversion source

- Built-in temperature sensor

Comparators

- Programmable hysteresis and response time

- Configurable as interrupt or reset source

- Low current (

USB Function Controller

- USB specification 2.0 compliant

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

- Integrated clock recovery; no external oscillator required for full speed or low speed

- Supports six flexible endpoints

- 1 kB USB buffer memory

- Integrated transceiver; no external resistors required

On-Chip Debug

- C8051F34A can be used as code development platform; Complete development kit available

- On-chip debug circuitry facilitates full speed, nonintrusive in-system debug

- Provides breakpoints, single stepping, inspect/modify memory and registers

Supply Voltage: 1.8 to 5.25 V

- On-chip LDO for internal core supply

- Built-in supply voltage monitor

High-Speed 8051 ?C Core

- Pipelined instruction architecture; executes 70 of instructions in 1 or 2 system clocks

- Up to 48 MIPS throughput with 48 MHz clock

- Expanded interrupt handler

Memory

- 1280 bytes internal data RAM (256 + 1024)

- 16 kB byte-programmable EPROM code memory

- EPROM can be programmed from firmware running on the device

Digital Peripherals

- 25 Port I/O with high sink current capability

- Hardware enhanced SPI?, SMBus?, and two enhanced UART serial ports

- Four general purpose 16-bit counter/timers

- 16-bit programmable counter array (PCA) with five capture/compare modules and enhanced PWM functionality

Clock Sources

- Two internal oscillators:

? 48 MHz: ±0.25 accuracy with clock recovery enabled. ? Supports all USB and UART modes

? 80/40/20/10 kHz low frequency, low power

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

- Can switch between clock sources on-the-fly; useful in power saving modes

Package Options

- 5x5 mm QFN28 or QFN32

- LQFP32