W29C020CP90B Winbond Electronics, W29C020CP90B Datasheet - Page 16

• 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

Timing Waveforms, continued
Toggle Bit Timing Diagram
Page Write Timing Diagram Software Data Protection Mode
Address A15-0
DQ7-0
#WE
#OE
#CE
#WE
#CE
#OE
DQ6
T
DH
SW0
5555
T
T
WP
OEH
software data protection mode
AA
T
Three-byte sequence for
WPH
2AAA
SW1
T
BLC
55
5555
SW2
T
A0
OE
HIGH-Z
- 16 -
Word 0
Byte/page load
cycle starts
Word N-1
(last word)
Word N
T
WR
Internal write starts
W29C020C
T
WC