Rainbow Electronics AT25DF081 - Manual (Page 24)

24
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)