SST49LF020A-33-4C-NHE SST [Silicon Storage Technology, Inc], SST49LF020A-33-4C-NHE Datasheet - Page 25

• Manufacturer Part Number: SST49LF020A-33-4C-NHE
• Description: 2 Mbit LPC Flash
• Manufacturer: SST [Silicon Storage Technology, Inc]

2 Mbit LPC Flash
SST49LF020A
©2006 Silicon Storage Technology, Inc.
FIGURE 11: Block-Erase Command Sequence (LPC Mode)
LFRAME#
LFRAME#
LFRAME#
LFRAME#
LFRAME#
LFRAME#
LAD[3:0]
LAD[3:0]
LAD[3:0]
LAD[3:0]
LAD[3:0]
LAD[3:0]
LCLK
LCLK
LCLK
LCLK
LCLK
LCLK
CE#
CE#
CE#
CE#
CE#
CE#
Note: 1. Address must be within memory address range specified in Table 4.
Write the 6th command (target sector to be erased) to the device in LPC mode.
BA X = Block Address
6th Start
1st Start
4th Start
3rd Start
1 Clock 1 Clock
1 Clock 1 Clock
2nd Start
1 Clock 1 Clock
1 Clock 1 Clock
5th
0000b
0000b
1 Clock 1 Clock
0000b 011Xb
0000b
0000b
1 Clock 1 Clock
0000b
Memory
Memory
Memory
Memory
Memory
Cycle
Write
Cycle
011Xb
Write
Cycle
011Xb
Write
Write
Cycle
011Xb
Cycle
011Xb
Memory
Write
Write
Cycle
011Xb
A[31:28] A[27:24]
A[31:28] A[27:24]
A[31:28] A[27:24]
A[31:28] A[27:24]
A[31:28] A[27:24]
A[31:28] A[27:24]
Load Address "YYYY 5555H" in 8 Clocks
Load Address "YYYY 2AAAH" in 8 Clocks
Load Address "YYYY 5555H" in 8 Clocks
Load Address "YYYY 5555H" in 8 Clocks
Load Address "YYYY 2AAAH" in 8 Clocks
Load Block Address in 8 Clocks
A[23:20]
A[23:20] A[19:16]
A[23:20] A[19:16]
A[23:20] A[19:16]
A[23:20] A[19:16]
A[23:20] A[19:16]
Write the 1st command to the device in LPC mode.
Write the 4th command to the device in LPC mode.
Write the 5th command to the device in LPC mode.
Address 1
Address 1
A[19:16]
Write the 3rd command to the device in LPC mode.
Address 1
Address 1
Write the 2nd command to the device in LPC mode.
Address 1
Address 1
0101b
0101b
BA X
0010b
0101b
0010b
XXXXb XXXXb XXXXb
25
0101b
0101b
1010b
0101b
1010b
0101b
0101b
1010b
0101b
1010b
1010b
0101b
0101b
Load Data "AAH" in 2 Clocks
0101b
Load Data "AAH" in 2 Clocks
Load Data "55H" in 2 Clocks
Load Data “50” in 2 Clocks
1010b
Load Data "80H" in 2 Clocks
Load Data "55H" in 2 Clocks
0000b
1010b
1010b
0101b
0000b
0101b
Data
Data
Data
Data
Data
Data
0101b
1010b
1010b
0101b
1000b
0101b
1111b
1111b
1111b
1111b
1111b
2 Clocks
2 Clocks
2 Clocks
2 Clocks
1111b
2 Clocks
2 Clocks
TAR
TAR
TAR
TAR
TAR
TAR
Tri-State
Tri-State
Tri-State
Tri-State
Tri-State
Tri-State
1 Clock
1 Clock
1 Clock
1 Clock
0000b
Sync
0000b
Sync
1 Clock
0000b
0000b
Sync
Sync
Sync
0000b
1 Clock
0000b
Sync
TAR
TAR
TAR
TAR
TAR
TAR
erase start
erase start
Command
Command
Start next
Start next
Command
Command
Command
Internal
S71206-08-000
Start next
Start next
Start next
Internal
1 Clock
1 Clock
1 Clock
1206 F12.0
1 Clock
1 Clock
Data Sheet
5/06