W39L040Q-90B Winbond Electronics, W39L040Q-90B Datasheet - Page 20

• Manufacturer Part Number: W39L040Q-90B
• Manufacturer: Winbond Electronics

Specifications of W39L040Q-90B

• Density: 4Mb
• Access Time (max): 90ns
• Interface Type: Parallel
• Boot Type: Bottom/Top
• Address Bus: 19b
• Operating Supply Voltage (typ): 3/3.3V
• Operating Temp Range: 0C to 70C
• Package Type: STSOP
• Program/erase Volt (typ): 3.3V
• Sync/async: Asynchronous
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Word Size: 8b
• Number Of Words: 512K
• Supply Current: 20mA
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / Rohs Status: Not Compliant

8. TIMING WAVEFORMS
8.1 Read Cycle Timing Diagram
8.2 #WE Controlled Command Write Cycle Timing Diagram
Address A18-0
Address A18-0
DQ7-0
#WE
#CE
#OE
DQ7-0
#WE
#OE
#CE
High-Z
V
IH
T
AS
T
OES
T
T
CLZ
CS
T
OLZ
T
CE
T
T
RC
OE
- 20 -
T
AH
Data Valid
T
WP
T
OH
Data Valid
T
AA
T
DS
Data Valid
T
T
DH
CH
T
T
OEH
WPH
T
CHZ
W39L040
High-Z
T
OHZ