AT91FR40162S ATMEL Corporation, AT91FR40162S Datasheet - Page 15

• Manufacturer Part Number: AT91FR40162S
• Description: MicroControllers
• Manufacturer: ATMEL Corporation

www.DataSheet4U.com
DataSheet
6.9.3
6.9.4
6.9.5
6.10
6.10.1
6.10.2
6174AS–ATARM–25-May-05
4
U
.com
User Peripherals
PIO: Parallel I/O Controller
WD: Watchdog
SF: Special Function
USART: Universal Synchronous/
Asynchronous Receiver Transmitter
TC: Timer Counter
The AIC also features a spurious vector detection feature, which reduces spurious interrupt
handling to a minimum, and a protect mode that facilitates the debug capabilities.
The AT91FR40162S has 32 programmable I/O lines. Six pins are dedicated as general-pur-
pose I/O pins. Other I/O lines are multiplexed with an external signal of a peripheral to
optimize the use of available package pins. The PIO controller enables generation of an inter-
rupt on input change and insertion of a simple input glitch filter on any of the PIO pins.
The Watchdog is built around a 16-bit counter and is used to prevent system lock-up if the
software becomes trapped in a deadlock. It can generate an internal reset or interrupt, or
assert an active level on the dedicated pin NWDOVF. All programming registers are pass-
word-protected to prevent unintentional programming.
The AT91FR40162S provides registers that implement the following special functions.
The AT91FR40162S provides two identical, full-duplex, universal synchronous/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 Timeout 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 AT91FR40162S features a Timer Counter block that includes three identical 16-bit timer
counter channels. Each channel can be independently programmed 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.
• Chip Identification
• RESET Status
• Protect Mode
AT91FR40162S
15