AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 210
AT91SAM7S256D-AU
Manufacturer Part Number
AT91SAM7S256D-AU
Description
ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU
Manufacturer
Atmel
Series
SAM7S256r
Datasheet
1.AT91SAM7S256D-AU.pdf
(775 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT91SAM7S256D-AU
Manufacturer:
ATMEL
Quantity:
101
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25.9.11
Register Name:
Access Type:
• CSS: Master Clock Selection
• PRES: Programmable Clock Prescaler
31
23
15
–
–
–
7
–
PMC Programmable Clock Register
0
0
0
0
1
1
1
1
0
0
1
1
30
22
14
PMC_PCKx
Read-write
–
–
–
6
–
CSS
29
21
13
–
–
–
–
5
PRES
0
0
1
1
0
0
1
1
0
1
0
1
28
20
12
–
–
–
4
Clock Source Selection
Slow Clock is selected
Main Clock is selected
Reserved
PLL Clock is selected
PRES
27
19
11
–
–
–
3
0
1
0
1
0
1
0
1
26
18
10
–
–
–
2
SAM7S Series [DATASHEET]
Programmable Clock
Selected clock
Selected clock divided by 2
Selected clock divided by 4
Selected clock divided by 8
Selected clock divided by 16
Selected clock divided by 32
Selected clock divided by 64
Reserved
6175M–ATARM–26-Oct-12
25
17
–
–
9
–
1
CSS
24
16
–
–
–
8
0
210
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