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SST49LF040 Datasheet(PDF) 24 Page - Silicon Storage Technology, Inc

Part # SST49LF040
Description  4 Mbit LPC Flash
PDF  48 Pages
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Manufacturer  SST [Silicon Storage Technology, Inc]
Direct Link  http://www.sst.com/
Logo SST - Silicon Storage Technology, Inc

SST49LF040 Datasheet(HTML) 24 Page - Silicon Storage Technology, Inc

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Advance Information
4 Mbit LPC Flash
SST49LF040
©2001 Silicon Storage Technology, Inc.
S71213-00-000
11/01 562
FIGURE 12: PROGRAM CYCLE TIMING DIAGRAM (LPC MODE)
562 ILL F11.1
LCLK
RST#
LFRAME#
LAD[3:0]
0000b
011Xb
A[23:20] A[19:16]
0101b
0101b
0101b
1010b
0101b
1010b
Tri-State
TAR
Load Address "YYYY 5555H" in 8 Clocks
Write the 1st command to the device in LPC mode.
Address1
1 Clock 1 Clock
1st Start
Memory
Write
Cycle
TAR
Sync
Data
Start next
Command
1 Clock
1 Clock
2 Clocks
Load Data "AAH" in 2 Clocks
1111b
0000b
LCLK
RST# = VIH
LFRAME#
LAD[3:0]
0000b
011Xb
A[23:20] A[19:16]
1010b
1010b
1010b
0101b
0010b
0101b
Tri-State
TAR
Load Address "YYYY 2AAAH" in 8 Clocks
Write the 2nd command to the device in LPC mode.
Address1
1 Clock 1 Clock
2nd Start
Memory
Write
Cycle
TAR
Sync
Data
Start next
Command
1 Clock
1 Clock
2 Clocks
Load Data "55H" in 2 Clocks
1111b
0000b
LCLK
RST# = VIH
LFRAME#
Load Address "YYYY 5555H" in 8 Clocks
Write the 3rd command to the device in LPC mode.
1 Clock 1 Clock
3rd Start
1 Clock
1 Clock
2 Clocks
Load Data "A0H" in 2 Clocks
LCLK
RST# = VIH
LFRAME#
LAD[3:0]
0000b
011Xb
A[23:20] A[19:16]
A[11:8]
A[7:4]
A[3:0]
D[7:4]
A[15:12]
D[3:0]
Tri-State
TAR
Load Ain in 8 Clocks
Write the 4th command (target locations to be programmed) to the device in LPC mode.
Address1
1 Clock 1 Clock
4th Start
Memory
Write
Cycle
TAR
Sync
Data
Internal
program start
Internal
program start
1 Clock
2 Clocks
Load Data in 2 Clocks
1111b
0000b
CE# = VIL
CE#
CE# = VIL
CE# = VIL
LAD[3:0]
0000b
011Xb
A[23:20] A[19:16]
0101b
0101b
0101b
1010b
0101b
0000b
Tri-State
TAR
Address1
TAR
Sync
Data
Start next
Command
1111b
0000b
A[31:28] A[27:24]
A[31:28] A[27:24]
A[31:28] A[27:24]
Note 1: YYYYH must be within memory address range specified in Figures 4 and 5.
A[31:28] A[27:24]



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