AT91SAM7S32-AU-001 Atmel, AT91SAM7S32-AU-001 Datasheet - Page 693
AT91SAM7S32-AU-001
Manufacturer Part Number
AT91SAM7S32-AU-001
Description
IC ARM7 MCU 32BIT 32K 48LQFP
Manufacturer
Atmel
Series
AT91SAMr
Specifications of AT91SAM7S32-AU-001
Core Processor
ARM7
Core Size
16/32-Bit
Speed
55MHz
Connectivity
I²C, SPI, SSC, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
21
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 1.95 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-LQFP
For Use With
AT91SAM7S-EK - KIT EVAL FOR ARM AT91SAM7S
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Other names
AT91SAM7S32-AU001
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- Current page: 693 of 779
- Download datasheet (11Mb)
40.15.6
40.15.6.1
40.15.6.2
40.15.6.3
40.15.6.4
40.15.6.5
6175K–ATARM–30-Aug-10
Serial Peripheral Interface (SPI)
20. SPI: Pulse Generation on SPCK
SPI: Bad tx_ready behavior when CSAAT=1 and SCBR = 1
SPI: LASTXFER (Last Transfer) behavior
SPI: SPCK Behavior in Master Mode
SPI: Chip Select and Fixed Mode
The software must handle the RTT event as an interrupt and should not poll RTT_SR.
In Master Mode, there is an additional pulse generated on SPCK when the SPI is configured as
follows:
None.
If the SPI is programmed with CSAAT = 1, SCBR(baudrate) = 1 and two transfers are performed
consecutively on the same slave with an IDLE state between them, the tx_ready signal does not
rise after the second data has been transferred in the shifter. This can imply for example, that
the second data is sent twice.
Do not use the combination CSAAT=1 and SCBR =1.
In FIXED Mode, with CSAAT bit set, and in “PDC mode” the Chip Select can rise depending on
the data written in the SPI_TDR when the TX_EMPTY flag is set. If for example, the PDC writes
a “1” in the bit 24 (LASTXFER bit) of the SPI_TDR, the chip select will rise as soon as the
TXEMPTY flag is set.
Use the CS in PIO mode when PDC mode is required and CS has to be maintained between
transfers.
SPCK pin can toggle out before the first transfer in Master Mode.
In Master Mode, MSTR bit must be set (in SPI_MR register) before configuring SPI_CSRx
registers.
In fixed Mode, if a transfer is performed through a PDC on a Chip select different from the Chip
select 0, the output spi_size sampled by the PDC will depend on the field, BITS (Bits per Trans-
fer) of SPI_CSR0 register, whatever the selected Chip select is. For example, if SPI_CSR0 is
configured for a 10-bit transfer whereas SPI_CSR1 is configured for an 8-bit transfer, when a
transfer is performed in Fixed mode through the PDC, on Chip select 1, the transfer will be con-
sidered as a HalfWord transfer.
Problem Fix/Workaround:
Problem Fix/Workaround
Problem Fix/Workaround
Problem Fix/Workaround
Problem Fix/Workaround
Problem Fix/Workaround
– The Baudrate is odd and different from 1
– The Polarity is set to 1
– The Phase is set to 0
AT91SAM7S Series Preliminary
693
Related parts for AT91SAM7S32-AU-001
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AT91 ARM Thumb-based Microcontrollers
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet:
Part Number:
Description:
IC ARM7 MCU FLASH 32K 48QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MCU ARM7 32KB FLASH 48LQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MCU ARM7 32KB FLASH 48-VQFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
DEV KIT FOR AVR/AVR32
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet: