AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 213

• 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

25.9.14
Register Name:
Access Type:
• MOSCS: MOSCS Flag Status
0 = Main oscillator is not stabilized.
1 = Main oscillator is stabilized.
• LOCK: PLL Lock Status
0 = PLL is not locked
1 = PLL is locked.
• MCKRDY: Master Clock Status
0 = Master Clock is not ready.
1 = Master Clock is ready.
• PCKRDYx: Programmable Clock Ready Status
0 = Programmable Clock x is not ready.
1 = Programmable Clock x is ready.
31
23
15
–
–
–
7
–
PMC Status Register
30
22
14
PMC_SR
Read-only
–
–
–
6
–
29
21
13
–
–
–
–
5
28
20
12
–
–
–
–
4
MCKRDY
27
19
11
–
–
–
3
PCKRDY2
LOCK
26
18
10
–
–
2
SAM7S Series [DATASHEET]
PCKRDY1
6175M–ATARM–26-Oct-12
25
17
–
–
9
1
–
PCKRDY0
MOSCS
24
16
–
–
8
0
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