AT45DB021B-RC Atmel, AT45DB021B-RC Datasheet - Page 11

• Manufacturer Part Number: AT45DB021B-RC
• Description: IC FLASH 2MBIT 20MHZ 28SOIC
• Manufacturer: Atmel

Specifications of AT45DB021B-RC

• 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: 0°C ~ 70°C
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Table 5-6.
Note:
1937J–DFLSH–9/05
Opcode
D2H
D4H
D6H
D7H
50H
52H
53H
54H
55H
56H
57H
58H
59H
60H
61H
68H
81H
82H
83H
84H
85H
86H
87H
88H
89H
E8H
r = Reserved Bit
P = Page Address Bit
B = Byte/Buffer Address Bit
x = Don’t Care
0 1 0 1 0 0 0 0 r
0 1 0 1 0 0 1 0 r
0 1 0 1 0 0 1 1 r
0 1 0 1 0 1 0 0 x
0 1 0 1 0 1 0 1 r
0 1 0 1 0 1 1 0 x
0 1 0 1 0 1 1 1
0 1 0 1 1 0 0 0 r
0 1 0 1 1 0 0 1 r
0 1 1 0 0 0 0 0 r
0 1 1 0 0 0 0 1 r
0 1 1 0 1 0 0 0 r
1 0 0 0 0 0 0 1 r
1 0 0 0 0 0 1 0 r
1 0 0 0 0 0 1 1 r
1 0 0 0 0 1 0 0 x
1 0 0 0 0 1 0 1 r
1 0 0 0 0 1 1 0 r
1 0 0 0 0 1 1 1 x
1 0 0 0 1 0 0 0 r
1 0 0 0 1 0 0 1 r
1 1 0 1 0 0 1 0 r
1 1 0 1 0 1 0 0 x
1 1 0 1 0 1 1 0 x
1 1 0 1 0 1 1 1
1 1 1 0 1 0 0 0 r
Opcode
Detailed Bit-level Addressing Sequence
r
r
r
x
r
x
r
r
r
r
r
r
r
r
x
r
r
x
r
r
r
x
x
r
r
r
r
x
r
x
r
r
r
r
r
r
r
r
x
r
r
x
r
r
r
x
x
r
Address Byte
r
r
r
x
r
x
r
r
r
r
r
r
r
r
x
r
r
x
r
r
r
x
x
r
N/A
N/A
r
r
r
x
r
x
r
r
r
r
r
r
r
r
x
r
r
x
r
r
r
x
x
r
P
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
P
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
P
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
P
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
P
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
P
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
Address Byte
P
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
N/A
N/A
x
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
x
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
x
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
x
B
x
B
x
B
x
x
x
x
B
x
B
x
B
B
x
B
x
x
B
B
B
B
x
B
x
B
x
B
x
x
x
x
B
x
B
x
B
B
x
B
x
x
B
B
B
B
x
B
x
B
x
B
x
x
x
x
B
x
B
x
B
B
x
B
x
x
B
B
B
B
x
B
x
B
x
B
x
x
x
x
B
x
B
x
B
B
x
B
x
x
B
B
B
B
Address Byte
x
B
x
B
x
B
x
x
x
x
B
x
B
x
B
B
x
B
x
x
B
B
B
B
N/A
N/A
AT45DB021B
x
B
x
B
x
B
x
x
x
x
B
x
B
x
B
B
x
B
x
x
B
B
B
B
x
B
x
B
x
B
x
x
x
x
B
x
B
x
B
B
x
B
x
x
B
B
B
B
x
B
x
B
x
B
x
x
x
x
B
x
B
x
B
B
x
B
x
x
B
B
B
B
x
B
x
B
x
B
x
x
x
x
B
x
B
x
B
B
x
B
x
x
B
B
B
B
Don’t Care
Additional
Required
4 Bytes
4 Bytes
4 Bytes
4 Bytes
Bytes
1 Byte
1 Byte
1 Byte
1 Byte
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
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