AT25DF641A datasheet(42/57 Pages) ATMEL

42 / 57 page

8693A–DFLASH–8/10

Atmel AT25DF641A [Preliminary]

Figure 12-2. Read Manufacturer and Device ID

Table 12-1.

Manufacturer and Device ID Information

Byte No.

Data Type

Value

Manufacturer ID

1Fh

Device ID (Part 1)

48h

Device ID (Part 2)

00h

[Optional to read] Extended Device Information (EDI) String Length

01h

[Optional to read] EDI Byte 1

00h

Table 12-2.

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 Atmel)

00011111

Device ID (Part 1)

Family Code

Density Code

48h

Family Code:

010 (AT25DF/26DFxxx series)

Density Code:

01000 (64-Mbit)

01001000

Device ID (Part 2)

Sub Code

Product Variant

00h

Sub Code:

000 (Standard series)

Product Variant:

00000 (Standard version)

00000000

Table 12-3.

EDI Data

Byte Number

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Hex

Value

Details

RFU

Device Revision

00h

RFU: Reserved for Future Use

Device Revision: 00000 (Initial version)

00000000

SCK

9Fh

OPCODE

1Fh

86h

00h

01h

00h

MANUFACTURER ID

DEVICE ID

BYTE 1

DEVICE ID

BYTE 2

EDI

STRING LENGTH

EDI

DATA BYTE 1

HIGH-IMPEDANCE

Note: Each transition

shown for SI and SO represents one byte (8 bits)

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