AT91SAM7X128 Atmel, AT91SAM7X128 Datasheet - Page 656
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AT91SAM7X128
Manufacturer Part Number
AT91SAM7X128
Description
MCU 32-Bit 91S ARM7TDMI RISC 128KB Flash 1.8V/3.3V 100-Pin LQFP
Manufacturer
Atmel
Datasheet
1.AT91SAM7X512-AU-999.pdf
(687 pages)
Specifications of AT91SAM7X128
Package
100LQFP
Device Core
ARM7TDMI
Family Name
91S
Maximum Speed
55 MHz
Ram Size
32 KB
Program Memory Size
128 KB
Operating Supply Voltage
1.8|3.3 V
Data Bus Width
32 Bit
Program Memory Type
Flash
Number Of Programmable I/os
62
Interface Type
CAN/Ethernet/SPI/I2S/TWI/USART/USB
On-chip Adc
8-chx10-bit
Operating Temperature
-40 to 85 °C
Number Of Timers
3
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41.3.9
41.3.9.1
41.3.9.2
41.3.9.3
656
AT91SAM7X512/256/128 Preliminary
Synchronous Serial Controller (SSC)
SSC: Periodic Transmission Limitations in Master Mode
SSC: Transmitter Limitations in Slave Mode
SSC: Transmitter Limitations in Slave Mode
If the Least Significant Bit is sent first (MSBF = 0), the first TAG during the frame synchro is not
sent.
None.
If TK is programmed as output and TF is programmed as input, it is impossible to emit data
when the start of edge (rising or falling) of synchro has a Start Delay equal to zero.
None.
If TK is programmed as an input and TF is programmed as an output and requested to be set to
low/high during data emission, the Frame Synchro signal is generated one bit clock period after
the data start and one data bit is lost. This problem does not exist when generating a periodic
synchro.
The data need to be delayed for one bit clock period with an external assembly. In the following
schematic, TD, TK and NRST are AT91SAM7X signals, TXD is the delayed data to connect to
the device.
Problem Fix/Workaround
Problem Fix/Workaround
Problem Fix/Workaround
6120H–ATARM–17-Feb-09
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