AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 238

• 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

26.5.11
Name:
Access Type:
• EXID: Chip ID Extension
Reads 0 if the bit EXT in DBGU_CIDR is 0.
26.5.12
Name:
Access Type:
• FNTRST: Force NTRST
0 = NTRST of the ARM processor’s TAP controller is driven by the power_on_reset signal.
1 = NTRST of the ARM processor’s TAP controller is held low.
31
23
15
31
23
15
–
–
–
–
7
7
Debug Unit Chip ID Extension Register
Debug Unit Force NTRST Register
30
22
14
30
22
14
–
–
–
–
6
6
DBGU_FNR
Read-write
DBGU_EXID
Read-only
29
21
13
29
21
13
–
–
–
–
5
5
28
20
12
28
20
12
–
–
–
–
4
4
EXID
EXID
EXID
EXID
27
19
11
–
–
–
–
27
19
11
3
3
26
18
10
–
–
–
–
2
26
18
10
2
SAM7S Series [DATASHEET]
25
17
6175M–ATARM–26-Oct-12
–
–
–
–
9
1
25
17
9
1
FNTRST
24
16
24
16
–
–
–
8
0
8
0
238