AT91R40008-66AI Atmel, AT91R40008-66AI Datasheet - Page 13

• Manufacturer Part Number: AT91R40008-66AI
• Description: IC ARM7 MCU 176 TQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91R40008-66AI

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 66MHz
• Connectivity: EBI/EMI, UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 256K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• For Use With: AT91EB40A - KIT EVAL FOR ARM AT91R40008
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

8.2
8.2.1
8.2.2
1732FS–ATARM–12-Apr-06
User Peripherals
USART: Universal Synchronous/
Asynchronous Receiver Transmitter
TC: Timer/Counter
The AT91R40008 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 Controller
channels. The data format includes a start bit, up to 8 data bits, an optional programmable par-
ity bit and up to 2 stop bits.
The USART also features a Receiver Time-out Register, facilitating variable length frame sup-
port when it is working with the PDC, and a Time-guard Register, used when interfacing with
slow remote equipment.
The AT91R40008 microcontroller features a Timer/Counter block that includes three identical
16-bit Timer/Counter channels. It is possible to independently program each channel to per-
form 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.
AT91R40008
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