AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 376

• Manufacturer Part Number: AT91SAM7S256D-AU
• Description: ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU
• Manufacturer: Atmel
• Series: SAM7S256r

Specifications of AT91SAM7S256D-AU

• Rohs: yes
• Core: ARM
• Processor Series: AT91SAM
• Data Bus Width: 16 bit/32 bit
• Maximum Clock Frequency: 55 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 64 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3 V to 3.6 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: LQFP-64
• Mounting Style: SMD/SMT
• Interface Type: 2-Wire, I2S, SPI, USART
• Length: 7 mm

31.6.3.9
Figure 31-16. Receiver Time-out Block Diagram
Table 31-8
Table 31-8.
The receiver is capable of detecting framing errors. A framing error happens when the stop bit of a received char-
acter is detected at level 0. This can occur if the receiver and the transmitter are fully desynchronized.
A framing error is reported on the FRAME bit of the Channel Status Register (US_CSR). The FRAME bit is
asserted in the middle of the stop bit as soon as the framing error is detected. It is cleared by writing the Control
Register (US_CR) with the RSTSTA bit at 1.
Framing Error
Baud Rate
gives the maximum time-out period for some standard baud rates.
RETTO
200000
bit/sec
14400
19200
28800
33400
56000
57600
1 200
2 400
4 800
9 600
600
Maximum Time-out Period
Character
Received
STTTO
1
D
Clear
Q
Baud Rate
Clock
Bit Time
1 667
833
417
208
104
µs
69
52
35
30
18
17
5
Clock
16-bit Time-out
Counter
TO
Load
Time-out
SAM7S Series [DATASHEET]
109 225
54 613
27 306
13 653
16-bit
Value
6 827
4 551
3 413
2 276
1 962
1 170
1 138
328
ms
0
=
6175M–ATARM–26-Oct-12
TIMEOUT
376