at25df641a ATMEL Corporation, at25df641a Datasheet - Page 42

• Manufacturer Part Number: at25df641a
• Description: 64-mbit 2.7v Minimum Serial Peripheral Interface Serial Flash Memory
• Manufacturer: ATMEL Corporation

Table 12-1.
Table 12-2.
Table 12-3.
42
Data Type
Manufacturer ID
Device ID (Part 1)
Device ID (Part 2)
Byte Number
Byte No.
1
Atmel AT25DF641A [Preliminary]
1
2
3
4
5
Manufacturer and Device ID Information
Manufacturer and Device ID Details
EDI Data
Bit 7
Bit 7
0
0
0
0
Family Code
Sub Code
Data Type
Manufacturer ID
Device ID (Part 1)
Device ID (Part 2)
[Optional to read] Extended Device Information (EDI) String Length
[Optional to read] EDI Byte 1
Bit 6
RFU
Bit 6
0
Figure 12-2. Read Manufacturer and Device ID
0
1
0
SCK
SO
CS
Bit 5
Bit 5
SI
0
0
0
0
JEDEC Assigned Code
Note: Each transition
Bit 4
Bit 4
HIGH-IMPEDANCE
1
0
0
0
0
Bit 3
OPCODE
Bit 3
1
1
0
9Fh
Product Variant
0
Density Code
Device Revision
6
Bit 2
7
shown for SI and SO represents one byte (8 bits)
1
0
0
MANUFACTURER ID
Bit 2
8
0
1Fh
Bit 1
1
0
0
Bit 1
14
0
15
Bit 0
16
1
0
0
DEVICE ID
BYTE 1
Bit 0
86h
0
Value
22
Hex
1Fh
48h
00h
23
Value
Hex
00h
24
DEVICE ID
Details
JEDEC Code:
Family Code:
Density Code:
Sub Code:
Product Variant: 00000 (Standard version)
BYTE 2
00h
30
Details
RFU: Reserved for Future Use
Device Revision: 00000 (Initial version)
31
STRING LENGTH
32
01h
EDI
0001 1111 (1Fh for Atmel)
010 (AT25DF/26DFxxx series)
01000 (64-Mbit)
000 (Standard series)
38
39
40
DATA BYTE 1
00h
EDI
8693A–DFLASH–8/10
46
Value
1Fh
48h
00h
01h
00h