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System Overview

C8051F330/1/2/3/4/5 devices are fully integrated mixed-signal System-on-a-Chip MCUs. Highlighted features are listed below. Refer to Table 1.1 for specific product feature selection.

? High-speed pipelined 8051-compatible microcontroller core (up to 25 MIPS)

? In-system, full-speed, non-intrusive debug interface (on-chip)

? True 10-bit 200 ksps 16-channel single-ended/differential ADC with analog multiplexer

? 10-bit Current Output DAC

? Precision programmable 25 MHz internal oscillator

? Up to 8 kB of on-chip Flash memory—512 bytes are reserved

? 768 bytes of on-chip RAM

? SMBus/I2C, Enhanced UART, and Enhanced SPI serial interfaces implemented in hardware

? Four general-purpose 16-bit timers

? Programmable Counter/Timer Array (PCA) with three capture/compare modules and Watchdog Timer function

? On-chip Power-On Reset, VDD Monitor, and Temperature Sensor

? On-chip Voltage Comparator

? 17 Port I/O (5 V tolerant)

Analog Peripherals

- 10-Bit ADC (‘F330/2/4 only)

? Up to 200 ksps

? Up to 16 external single-ended or differential inputs

? VREF from internal VREF, external pin or VDD

? Internal or external start of conversion source

? Built-in temperature sensor

- 10-Bit Current Output DAC (‘F330 only)

- Comparator

? Programmable hysteresis and response time

? Configurable as interrupt or reset source

? Low current (0.4 μA)

On-Chip Debug

- On-chip debug circuitry facilitates full speed, nonintrusive 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

- Typical operating current: 6.4 mA at 25 MHz;?

9 μA at 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

- 768 bytes internal data RAM (256 + 512)

- 8 kB (‘F330/1), 4 kB (‘F332/3), or 2 kB (‘F334/5) Flash; In-system programmable in 512-byte Sectors—512 bytes are reserved in the 8 kB devices

Digital Peripherals

- 17 Port I/O; All 5 V tolerant with high sink current

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

- Four 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

- Two internal oscillators:

? 24.5 MHz with ±2 accuracy supports crystal-less UART operation

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

- 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-Pin QFN Package