w49v002a Winbond Electronics Corp America, w49v002a Datasheet - Page 29

• Manufacturer Part Number: w49v002a
• Description: 256k X 8 Cmos Flash Memory With Lpc Interface
• Manufacturer: Winbond Electronics Corp America

Timing Waveforms for LPC Interface Mode, continued
GPI Register Readout Timing Diagram
Reset Timing Diagram
#RESET
#LFRAM
LAD[3:0]
Note: Read the DQ[4:0] to capture the states(High or Low) of the GPI[4:0] input pins. The DQ[7:5] are reserved pins.
CLK
#RESET
LAD[3:0]
#LFRAM
VDD
CLK
1 Clock
0000b
Start
1 Clock
Memory
Read
Cycle
010Xb
A[31:28] A[27:24]
Load Address "FFBC0100(hex)" in 8 Clocks
T
PRST
A[23:20] A[19:16]
T
KRST
Address
0000b
0001b
- 29 -
0000b
T
RST
F
0000b
Preliminary W49V002A
1111b
T
RSTP
2 Clocks
TAR
Tri-State 0000b
Publication Release Date: April 2001
1 Clock
Sync
Data out 2 Clocks
D[3:0]
T
RST
Data
D[7:4]
TAR
Revision A1
Next Start
1 Clock
0000b