W29C040P-90 Winbond Electronics, W29C040P-90 Datasheet - Page 9

• Manufacturer Part Number: W29C040P-90
• Manufacturer: Winbond Electronics

Specifications of W29C040P-90

• Density: 4Mb
• Access Time (max): 90ns
• Interface Type: Parallel
• Boot Type: Bottom/Top
• Address Bus: 19b
• Operating Supply Voltage (typ): 5V
• Operating Temp Range: 0C to 70C
• Package Type: PLCC
• Program/erase Volt (typ): 5V
• Sync/async: Asynchronous
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Word Size: 8b
• Number Of Words: 512K
• Supply Current: 50mA
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / Rohs Status: Not Compliant

7.3
Software Chip Erase Acquisition Flow
Notes for software chip erase:
Data Format: DQ7 − DQ0 (Hex)
Address Format: A14 − A0 (Hex)
Command Codes for Software Chip Erase
BYTE SEQUENCE
0 Write
1 Write
2 Write
3 Write
4 Write
5 Write
W ait for 50 m S or
Load data AA
address 2AAA
address 2AAA
Load data AA
Load data 55
address 5555
address 5555
address 5555
address 5555
Load data 80
Load data 55
Load data 10
toggle/polling
ADDRESS
completed
2AAAH
2AAAH
5555H
5555H
5555H
5555H
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Publication Release Date: Aug. 14, 2006
DATA
AAH
AAH
55H
80H
55H
10H
W29C040
Revision A11