AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 391

• 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

Access Type:
• USART_MODE
• USCLKS: Clock Selection
• CHRL: Character Length.
• SYNC: Synchronous Mode Select
0: USART operates in Asynchronous Mode.
31
23
15
–
–
7
0
0
1
1
0
0
0
0
0
0
0
0
1
1
0
0
1
1
CHMODE
CHRL
USCLKS
CHRL
30
22
14
Read-write
–
–
6
0
1
0
1
0
0
0
0
1
1
1
1
0
1
0
1
0
1
USART_MODE
DSNACK
Character Length
5 bits
6 bits
7 bits
8 bits
29
21
13
–
5
Selected Clock
MCK
MCK/DIV (DIV = 8)
Reserved
SCK
NBSTOP
USCLKS
0
0
1
1
0
0
1
1
0
x
FILTER
INACK
28
20
12
4
0
1
0
1
0
1
0
1
0
x
OVER
27
19
11
–
3
Mode of the USART
Normal
RS485
Hardware Handshaking
Modem (Reserved on SAM7S32/16)
IS07816 Protocol: T = 0
Reserved
IS07816 Protocol: T = 1
Reserved
IrDA
Reserved
CLKO
PAR
26
18
10
2
SAM7S Series [DATASHEET]
USART_MODE
MAX_ITERATION
MODE9
6175M–ATARM–26-Oct-12
25
17
9
1
MSBF
SYNC
24
16
8
0
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