![](http://datasheet.mmic.net.cn/330000/PM49FL002_datasheet_16444280/PM49FL002_20.png)
Programmable Microelectronics Corp.
Issue Date: December, 2003 Rev: 1.4
20
PMC
Pm49FL002 / 004
CLK
RST# or INIT#
LFRAME#
LAD[3:0]
CLK
LFRAME#
LAD[3:0]
CLK
LFRAME#
LAD[3:0]
CLK
LFRAME#
LAD[3:0]
0000b
011Xb
1111b
0101b
1111b
Tri-State
0000b
Memory
Write
Cycle
1st Start
1 Clock
1 Clock
Load "5555h" in 8 Clocks
Load "AAh" in 2 Clocks
1 Clock
2 Clocks
1111b
1111b
TAR
Sync
Data
Address
0101b
0101b
0101b
11xxb
1010b
1010b
Host to Device
1111b
Tri-State
TAR
Device2 Clocks
0000b
011Xb
1111b
0010b
1111b
Tri-State
0000b
Memory
Write
Cycle
2nd Start
1 Clock
1 Clock
Load "2AAAh" in 8 Clocks
Load "55h" in 2 Clocks
1 Clock
2 Clocks
1111b
1111b
TAR
Sync
Data
Address
0101b
1010b
0101b
11xxb
1010b
1010b
Host to Device
1111b
Tri-State
TAR
Device2 Clocks
CLK
LFRAME#
LAD[3:0]
CLK
LFRAME#
LAD[3:0]
0000b
011Xb
1111b
SA[19:16]
1111b
Tri-State
0000b
Memory
Write
Cycle
6th Start
1 Clock
1 Clock
Load Sector Address in 8 Clocks
Load "30h" in 2 Clocks
1 Clock
2 Clocks
1111b
1111b
TAR
Sync
Data
Address
0011b
0000b
xxxxb
xxxxb
Host to Device
1111b
Tri-State
TAR
Device2 Clocks
xxxxb
SA = Sector Address
Internal Erase
Start
0000b
011Xb
1111b
0010b
1111b
Tri-State
0000b
Memory
Write
Cycle
5th Start
1 Clock
1 Clock
Load "2AAAh" in 8 Clocks
Load "55h" in 2 Clocks
1 Clock
2 Clocks
1111b
1111b
TAR
Sync
Data
Address
1010b
1010b
1010b
11xxb
0101b
0101b
Host to Device
1111b
Tri-State
TAR
Device2 Clocks
0000b
011Xb
1111b
11xxb
1111b
Tri-State
0000b
Memory
Write
Cycle
4th Start
1 Clock
1 Clock
Load "5555" in 8 Clocks
Load "AAh" in 2 Clocks
1 Clock
2 Clocks
1111b
1111b
TAR
Sync
Data
Address
1010b
0101b
0101b
0101b
0101b
Host to Device
1111b
Tri-State
TAR
Device2 Clocks
0101b
0000b
011Xb
1111b
0101b
1111b
Tri-State
0000b
Memory
Write
Cycle
3rd Start
1 Clock
1 Clock
Load "5555h" in 8 Clocks
Load "80h" in 2 Clocks
1 Clock
2 Clocks
1111b
1111b
TAR
Sync
Data
Address
0101b
0101b
0101b
11xxb
0000b
1000b
Host to Device
1111b
Tri-State
TAR
Device2 Clocks
RST# or INIT#
RST# or INIT#
RST# or INIT#
RST# or INIT#
RST# or INIT#
SA[15:12]
LPC SECTOR ERASE WAVEFORMS