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Serial Quad I/O (SQI) Flash Memory
A Microchip Technology Company
SST26VF016 / SST26VF032
Data Sheet
Instructions
Instructions are used to read, write (erase and program), and configure the SST26VF016/032. The
instruction bus cycles are two nibbles each for commands (Op Code), data, and addresses. Prior to
executing any write instructions, the Write-Enable (WREN) instruction must be executed. The com-
plete list of the instructions is provided in Table 3.
All instructions are synchronized off a high to low transition of CE#. Inputs are accepted on the rising
edge of SCK starting with the most significant nibble. CE# must be driven low before an instruction is
entered and must be driven high after the last nibble of the instruction has been input (except for read
instructions). Any low-to-high transition on CE# before receiving the last nibble of an instruction bus
cycle, will terminate the instruction being entered and return the device to the standby mode.
Table 3: Device Operation Instructions for SST26VF016/032 (1 of 2)
Instruction
NOP
RSTEN
RST 3
EQIO
RSTQIO 4
Read 5
High-Speed
Description
No Operation
Reset Enable
Reset Memory
Enable Quad I/O
Reset Quad I/O
Read Memory
Read Memory at Higher Speed
Command
Cycle 1
00H
66H
99H
38H
FFH
03H
0BH
Address
Cycle(s) 2
0
0
0
0
0
3
3
Dummy
Cycle(s)
0
0
0
0
0
0
1
Data
Cycle(s)
0
0
0
0
0
1 to ?
1 to ?
Maximum
Frequency
80 MHz
33 MHz
Read 5
Set Burst 6
Read Burst
Read PI 7
Set Burst Length
nB Burst with Wrap
Jump to address within 256
C0H
0CH
08H
0
3
1
0
1
1
1
n to ?
1 to ?
Byte page indexed by n
Read I
Jump to address within block
09H
2
2
1 to ?
indexed by n
Read BI
JEDEC-ID 5,8
Quad J-ID 8
Jump to block Indexed by n
JEDEC-ID Read
Quad I/O J-ID Read
10H
9FH
AFH
1
0
0
2
0
0
1 to ?
3 to ?
3 to ?
Sector
Erase 9
Erase 4 KBytes of Memory Array
20H
3
0
0
Block Erase 10
Erase 64, 32 or 8 KBytes of
D8H
3
0
0
80 MHz
Memory Array
Chip Erase
Page Program
Write Suspend
Write Resume
Read SID
Program SID 11
Lockout SID 11
RDSR 12
WREN
WRDI
Erase Full Array
Program 1 to 256 Data Bytes
Suspends Program/Erase
Resumes Program/Erase
Read Security ID
Program User Security ID area
Lockout Security ID Programming
Read Status Register
Write Enable
Write Disable
C7H
02H
B0H
30H
88H
A5H
85H
05H
06H
04H
0
3
0
0
1
1
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
1 to 256
0
0
1 to 32
1 to 24
0
1 to ?
0
0
?2011 Silicon Storage Technology, Inc.
11
DS-25017A
04/11
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