W29C020CP90B Winbond Electronics, W29C020CP90B Datasheet - Page 7

• Manufacturer Part Number: W29C020CP90B
• Description: IC FLASH 2MBIT 90NS 32PLCC
• Manufacturer: Winbond Electronics

Specifications of W29C020CP90B

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 2M (256K x 8)
• Speed: 90ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 32-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: Q1321111

Command Codes for Software Chip Erase
Software Chip Erase Acquisition Flow
Notes for software chip erase:
Data Format: DQ7
Address Format: A14
BYTE SEQUENCE
0 Write
1 Write
2 Write
3 Write
4 Write
5 Write
DQ0 (Hex)
A0 (Hex)
address 2AAA
address 2AAA
address 5555
address 5555
address 5555
Load data AA
address 5555
Load data 10
Pause 50 mS
Load data AA
Load data 55
Load data 55
ADDRESS
Load data 80
2AAAH
2AAAH
5555H
5555H
5555H
5555H
Exit
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Publication Release Date: February 18, 2002
W29C020C
DATA
AAH
AAH
55H
80H
55H
10H
Revision A4