Rainbow Electronics AT25DF081 User Manual
Page 24
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3674E–DFLASH–8/08
AT25DF081
Deasserting the CS pin will terminate the Manufacturer and Device ID read operation and put
the SO pin into a high-impedance state. The CS pin can be deasserted at any time and does not
require that a full byte of data be read.
Figure 11-1. Read Manufacturer and Device ID
Table 11-1.
Manufacturer and Device ID Information
Byte No.
Data Type
Value
1
Manufacturer ID
1Fh
2
Device ID (Part 1)
45h
3
Device ID (Part 2)
02h
4
Extended Device Information String Length
00h
Table 11-2.
Manufacturer and Device ID Details
Data Type
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Hex
Value
Details
Manufacturer ID
JEDEC Assigned Code
1Fh
JEDEC Code:
0001 1111 (1Fh for Adesto)
0
0
0
1
1
1
1
1
Device ID (Part 1)
Family Code
Density Code
47h
Family Code:
Density Code:
010 (AT25DF/26DFxxx series)
00101 (8-Mbit)
0
1
0
0
0
1
0
1
Device ID (Part 2)
Sub Code
Product Version Code
00h
Sub Code:
Product Version:
000 (Standard series)
00010
0
0
0
0
0
0
1
0
SCK
CS
SI
SO
6
0
9Fh
8
7
38
OPCODE
1Fh
45h
02h
00h
MANUFACTURER ID
DEVICE ID
BYTE 1
DEVICE ID
BYTE 2
EXTENDED
DEVICE
INFORMATION
STRING LENGTH
HIGH-IMPEDANCE
14
16
15
22
24
23
30
32
31
Note: Each transition
shown for SI and SO represents one byte (8 bits)