AT91M40400 View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
'AT91M40400' PDF : 116 Pages View PDF
SF: Special Function
The AT91M40400 provides registers which implement the following special functions.
• Chip identification
• RESET status
• Protect Mode (see Protect Mode on page 37)
SF User Interface
Chip ID Base Address = 0xFFF00000
Table 14. SF Memory Map
Offset
Register
0x00
Chip ID Register
0x04
Chip ID Extension Register
0x08
Reset Status Register
0x0C
0x10
0x14
0x18
Reserved
Reserved
Reserved
Protect Mode Register
Name
SF_CIDR
SF_EXID
SF_RSR
---
---
---
SF_PMR
Access
Read only
Read only
Read only
---
---
---
Read/Write
Reset State
Hardwired
Hardwired
See register
description
---
---
---
0x0
Chip ID Register
Register Name:
Access Type:
SF_CIDR
Read only
31
30
29
28
27
26
25
24
EXT
NVPTYP
ARCH
23
22
21
20
19
18
17
16
ARCH
VDSIZ
15
14
13
12
11
10
9
8
NVDSIZ
NVPSIZ
7
6
5
4
3
2
1
0
0
1
0
VERSION
• VERSION: Version of the chip
This value is incremented by one with each new version of the chip (from zero to a maximum value of 31).
• NVPSIZ: Non Volatile Program Memory Size
NVPSIZ
Size
0
0
0
0 None
0
0
1
1 32K bytes
0
1
0
1 64K bytes
0
1
1
1 128K bytes
1
0
0
1 256K bytes
Others
Reserved
112
AT91M40400
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