AT45DB021B-SI Atmel, AT45DB021B-SI Datasheet - Page 20

• Manufacturer Part Number: AT45DB021B-SI
• Description: IC FLASH 2MBIT 20MHZ 8SOIC
• Manufacturer: Atmel

Specifications of AT45DB021B-SI

• Format - Memory: FLASH
• Memory Type: DataFLASH
• Memory Size: 2M (1024 pages x 264 bytes)
• Speed: 20MHz
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

12.3
12.4
20
SCK
SO
CS
SCK
SI
SO
CS
Buffer Read (Opcode: 54H or 56H)
Status Register Read (Opcode: 57H)
SI
AT45DB021B
t
SU
t
SU
1
0
1
0
COMMAND OPCODE
2
1
HIGH-IMPEDANCE
2
1
COMMAND OPCODE
3
0
3
0
HIGH-IMPEDANCE
4
1
4
1
5
0
5
0
6
1
1
7
36
X
8
1
37
X
t
V
9
38
X
MSB
D 7
10
39
X
STATUS REGISTER OUTPUT
D 6
11
40
X
t
D 5
V
12
41
MSB
D 7
42
DATA OUT
D 1
16
D 6
43
LSB
D 0
17
D 5
1937J–DFLSH–9/05
MSB
D 7