W39V040FAP Winbond Electronics, W39V040FAP Datasheet - Page 30

• Manufacturer Part Number: W39V040FAP
• Manufacturer: Winbond Electronics

Specifications of W39V040FAP

• Density: 4Mb
• Access Time (max): 150ns
• Interface Type: Parallel/Serial
• Boot Type: Top
• Address Bus: 4/11Bit
• Operating Supply Voltage (typ): 3/3.3V
• Operating Temp Range: 0C to 70C
• Package Type: PLCC
• Program/erase Volt (typ): 3.3V
• Sync/async: Async/Sync
• 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

Timing Waveforms for FWH Interface Mode, continued
11.5 Toggle Bit Timing Diagram
FWH[3:0]
#RESET
FWH[3:0]
FWH[3:0]
FWH4
FWH4
#RESET
#RESET
FWH4
CLK
CLK
CLK
1 Clock
1 Clock
1 Clock
Start
1101b
1110b
1101b
Start
Start
1 Clock
1 Clock
1 Clock
IDSEL
0000b
IDSEL
0000b
IDSEL
0000b
XXXXb
XXXXb
XXXXb
XXXXb
XXXXb
XXXXb
Write the last command(program or erase) to the device in FWH mode.
XXA[18:16]b
XXXXb
XXXXb
Load Address "An" in 7 Clocks
Read the DQ6 to see if the internal write complete or not.
Load Address in 7 Clocks
Load Address in 7 Clocks
When internal write complete, the DQ6 will stop toggle.
A[15:12]
XXXXb
XXXXb
Address
Address
Address
A[11:8]
XXXXb
XXXXb
- 30 -
A[7:4]
XXXXb
XXXXb
XXXXb
XXXXb
A[3:0]
M Size
0000b
0000b
M Size
M Size
0000b
D[3:0]
Load Data "Dn"
1111b
1111b
in 2 Clocks
2 Clocks
2 Clocks
Data
TAR
TAR
D[7:4]
Tri-State
Tri-State
1 Clock
1 Clock
1111b
0000b
0000b
Sync
Sync
2 Clocks
TAR
Tri-State
Data out 2 Clocks
Data out 2 Clocks
XXXXb
XXXXb
W39V040FA
Data
Data
1 Clock
X,D6,XXb
X,D6,XXb
0000b
Sync
1111b
1111b
1111b
2 Clocks
2 Clocks
2 Clocks
TAR
TAR
TAR
Tri-State
Tri-State
Tri-State
1 Clock
1 Clock
Next Start
Next Start
1 Clock
Next Start