AT91M40800(2002) View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT91M40800
(Rev.:2002)

AT91 ARM® Thumb® Microcontrollers

Atmel Corporation 

User Peripherals

USART: Universal

Synchronous/

Asynchronous Receiver

Transmitter

TC: Timer Counter

AT91M40800

The AT91M40800 microcontroller provides two identical, full-duplex, universal synchro-

nous/asynchronous receiver/transmitters.

Each USART has its own baud rate generator, and two dedicated Peripheral Data Con-

troller channels. The data format includes a start bit, up to 8 data bits, an optional

programmable parity bit and up to 2 stop bits.

The USART also features a Receiver Timeout register, facilitating variable length frame

support when it is working with the PDC, and a Time Guard register, used when interfac-

ing with slow remote equipment.

The AT91M40800 microcontroller features a Timer Counter block that includes three

identical 16-bit timer counter channels. Each channel can be independently pro-

grammed to perform a wide range of functions including frequency measurement, event

counting, interval measurement, pulse generation, delay timing and pulse width

modulation.

The Timer Counter can be used in Capture or Waveform mode, and all three counter

channels can be started simultaneously and chained together.

13

1348DS–ATARM–02/02

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