SST49LF020A-33-4C-NHE SST [Silicon Storage Technology, Inc], SST49LF020A-33-4C-NHE Datasheet - Page 23

• 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.
LFRAME#
LFRAME#
LFRAME#
FIGURE 9: Toggle Bit Command Sequence (LPC Mode)
LAD[3:0]
LAD[3:0]
LAD[3:0]
LCLK
LCLK
LCLK
CE#
CE#
CE#
Note: 1. Address must be within memory address range specified in Table 4.
1st Start
1 Clock 1 Clock
0000b
Start
1 Clock 1 Clock
Start
1 Clock 1 Clock
0000b
0000b
Memory
Cycle
011Xb
Write
Memory
Memory
010Xb
Cycle
010Xb
Read
Cycle
Read
A[31:28] A[27:24]
A[31:28] A[27:24]
A[31:28] A[27:24]
Write the last command (Program or Erase) to the device in LPC mode.
A[23:20] A[19:16]
Load Address in 8 Clocks
A[23:20] A[19:16]
Load Address in 8 Clocks
Load Address in 8 Clocks
A[23:20] A[19:16]
When internal write complete, the DQ 6 will stop toggle.
Read the DQ 6 to see if internal write complete or not.
Address 1
Address 1
Address 1
A[15:12]
A[15:12]
A[15:12]
23
A[11:8]
A[11:8]
A[11:8]
A[7:4]
A[7:4]
A[7:4]
A[3:0]
A[3:0]
A[3:0]
Load Data in 2 Clocks
D[3:0]
1111b
1111b
Data
2 Clocks
2 Clocks
TAR
TAR
D[7:4]
Tri-State
Tri-State
1111b
1 Clock
1 Clock
0000b
Sync
0000b
Sync
2 Clocks
TAR
Tri-State
Data out 2 Clocks
XXXXb
Data out 2 Clocks
XXXXb
Data
Data
1 Clock
0000b
Sync
X,D6#,XXb
X,D6,XXb
S71206-08-000
TAR
TAR
TAR
Data Sheet
1206 F10.0
Command
Start next
Next start
Next start
1 Clock
0000b
1 Clock
0000b
1 Clock
0000b
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