AT25DF321-S3U Atmel, AT25DF321-S3U Datasheet - Page 24

• Manufacturer Part Number: AT25DF321-S3U
• Description: IC FLASH 32MBIT 70MHZ 16SOIC
• Manufacturer: Atmel

Specifications of AT25DF321-S3U

• Format - Memory: FLASH
• Memory Type: DataFLASH
• Memory Size: 32M (16384 pages x 256 Bytes)
• Speed: 70MHz
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 11-1.
Table 11-2.
24
Data Type
Manufacturer ID
Device ID (Part 1)
Device ID (Part 2)
Byte No.
AT25DF321
1
2
3
4
Manufacturer and Device ID Information
Manufacturer and Device ID Details
Bit 7
0
0
0
Family Code
Data Type
Manufacturer ID
Device ID (Part 1)
Device ID (Part 2)
Extended Device Information String Length
Sub Code
Bit 6
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
0
1
0
SCK
SO
CS
Bit 5
SI
0
0
0
JEDEC Assigned Code
Note: Each transition
Bit 4
1
0
0
HIGH-IMPEDANCE
Bit 3
Product Version Code
0
1
0
0
OPCODE
Density Code
9Fh
Bit 2
1
1
0
6
7
shown for SI and SO represents one byte (8 bits)
MANUFACTURER ID
8
Bit 1
1
1
0
1Fh
Bit 0
14
1
1
0
15
16
Value
DEVICE ID
Hex
1Fh
47h
00h
BYTE 1
47h
22
Details
JEDEC Code:
Family Code:
Density Code:
Sub Code:
Product Version:
23
24
DEVICE ID
BYTE 2
00h
30
31
STRING LENGTH
32
0001 1111 (1Fh for Atmel)
010 (AT25/26DFxxx series)
00111 (32-Mbit)
000 (Standard series)
00000 (Initial version)
INFORMATION
EXTENDED
DEVICE
00h
3669B–DFLASH–6/09
38
Value
1Fh
47h
00h
00h