AT91SAM7A1_05 Datasheet, PDF (71/402 Pages) ATMEL Corporation – AT91 ARM Thumb-based Microcontrollers

AT91SAM7A1
12.4.1 SFM Chip ID Register
Name:
SFM_CIDR
Access:
Read-only
Base Address:
0xFFF0000
31
30
29
28
27
26
25
24
EXT
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
ARCH[3:0]
15
14
13
12
11
10
9
8
NVPMT[3:0]
IRS[3:0]
7
6
5
4
3
2
1
0
NVDMS[3:0]
NVPMS[3:0]
• NVPMS[3:0]: Non Volatile Program Memory Size
0000_b: None.
Other: Memory size = 2^{(14+NVPMS[3:0])} bytes.
• NVDMS[3:0]: Non Volatile Data Memory Size
0000_b: None.
Other: Reserved.
• IRS[3:0]: Internal RAM Size
Internal RAM size = 2^(9+IRS[3:0]) bytes.
• NVPMT[3:0]: Non Volatile Program Memory Type
0000_b: ROMless.
0001_b: Mask ROM.
Other: Reserved.
• ARCH[3:0]: Core Architecture
0000_b: ARM7TDMI.
Other: Reserved.
• EXT: Extension Flag
0: No extended chip ID.
1: Extended chip ID existing.
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6048A–ATARM–03-Mar-05