W29C020P-12 Winbond Electronics, W29C020P-12 Datasheet - Page 17

• Manufacturer Part Number: W29C020P-12
• Manufacturer: Winbond Electronics

Specifications of W29C020P-12

• Density: 2Mb
• Access Time (max): 120ns
• Interface Type: Parallel
• Boot Type: Bottom/Top
• Address Bus: 18b
• 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: 256K
• Supply Current: 50mA
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / Rohs Status: Supplier Unconfirmed

Timing Waveforms, continued
Reset Software Data Protection Timing Diagram
Software Chip Erase Timing Diagram
Address A15-0
Address A15-0
DQ7-0
DQ7-0
WE
CE
OE
WE
CE
OE
5555
5555
SW0
T
SW0
T
WP
WP
AA
AA
T
T
WPH
WPH
2AAA
2AAA
SW1
SW1
T
55
T
55
BLC
BLC
Six-byte code for 5V-only software
Six-byte sequence for resetting
software data protection mode
5555
5555
SW2
SW2
80
80
- 17 -
chip erase
5555
5555
SW3
SW3
AA
AA
2AAA
SW4
2AAA
SW4
55
55
Publication Release Date: February 1998
5555
SW5
5555
SW5
10
20
Internal programming starts
Internal erasing starts
T
T
WC
WC
W29C020
Revision A3