AT45DB321D-TU Atmel, AT45DB321D-TU Datasheet - Page 26

• Manufacturer Part Number: AT45DB321D-TU
• Description: IC FLASH 32MBIT 66MHZ 28TSOP
• Manufacturer: Atmel

Specifications of AT45DB321D-TU

• Format - Memory: FLASH
• Memory Type: DataFLASH
• Memory Size: 32M (8192 pages x 528 bytes)
• Speed: 66MHz
• Interface: SPI, RapidS
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-TSOP
• Architecture: Sectored
• Interface Type: SPI
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Current: 15 mA
• Mounting Style: SMD/SMT
• Organization: 528 B x 8192
• Memory Configuration: 8192 Pages X 528 Bytes
• Clock Frequency: 20MHz
• Supply Voltage Range: 2.7V To 3.6V
• Memory Case Style: TSOP
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

14. Manufacturer and Device ID Read
14.1
14.1.1
14.1.2
14.1.3
14.1.4
26
Value
Value
Value
Value
Hex
1FH
Hex
27H
Hex
00H
Hex
00H
Manufacturer and Device ID Information
Bit 7
Bit 7
Bit 7
Bit 7
AT45DB321D
Byte 1 – Manufacturer ID
Byte 2 – Device ID (Part 1)
Byte 3 – Device ID (Part 2)
Byte 4 – Extended Device Information String Length
0
0
0
0
Family Code
MLC Code
Bit 6
Bit 6
Bit 6
Bit 6
0
0
0
0
Bit 5
Bit 5
Bit 5
Bit 5
0
1
0
0
Identification information can be read from the device to enable systems to electronically query
and identify the device while it is in system. The identification method and the command opcode
comply with the JEDEC standard for “Manufacturer and Device ID Read Methodology for SPI
Compatible Serial Interface Memory Devices”. The type of information that can be read from the
device includes the JEDEC defined Manufacturer ID, the vendor specific Device ID, and the ven-
dor specific Extended Device Information.
To read the identification information, the CS pin must first be asserted and the opcode of 9FH
must be clocked into the device. After the opcode has been clocked in, the device will begin out-
putting the identification data on the SO pin during the subsequent clock cycles. The first byte
that will be output will be the Manufacturer ID followed by two bytes of Device ID information.
The fourth byte output will be the Extended Device Information String Length, which will be 00H
indicating that no Extended Device Information follows. As indicated in the JEDEC standard,
reading the Extended Device Information String Length and any subsequent data is optional.
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.
JEDEC Assigned Code
Bit 4
Bit 4
Bit 4
Bit 4
Byte Count
1
0
0
0
Product Version Code
Bit 3
Bit 3
Bit 3
Bit 3
1
0
0
0
Density Code
Bit 2
Bit 2
Bit 2
Bit 2
1
1
0
0
Bit 1
Bit 1
Bit 1
Bit 1
1
1
0
0
Bit 0
Bit 0
Bit 0
Bit 0
1
1
1
0
Manufacturer ID
Family Code
Density Code
MLC Code
Product Version
Byte Count
1FH = Atmel
00111 = 32-Mbit
00001 = Second Version
00H = 0 Bytes of Information
001 = DataFlash
000 = 1-bit/Cell Technology
3597O–DFLASH–10/09