SST25VF020B-80-4C-SAE-T Microchip Technology, SST25VF020B-80-4C-SAE-T Datasheet - Page 23

• Manufacturer Part Number: SST25VF020B-80-4C-SAE-T
• Description: 2.7V To 3.6V 2Mbit SPI Serial Flash 8 SOIC 3.90mm (.150") T/R
• Manufacturer: Microchip Technology

Specifications of SST25VF020B-80-4C-SAE-T

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 2M (256K x 8)
• Speed: 80MHz
• Interface: SPI Serial
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

A Microchip Technology Company
©2011 Silicon Storage Technology, Inc.
JEDEC Read-ID
Figure 21:Enable-Write-Status-Register (EWSR) or Write-Enable (WREN) and
The WRSR instruction can either execute a byte-data or a word-data input. Extra data/clock input, or
within byte-/word-data input, will not be executed. The reason for the byte support is for backward com-
patibility to products where WRSR instruction sequence is followed by only a byte-data.
The JEDEC Read-ID instruction identifies the device as SST25VF020B and the manufacturer as SST.
The device information can be read from executing the 8-bit command, 9FH. Following the JEDEC
Read-ID instruction, the 8-bit manufacturer’s ID, BFH, is output from the device. After that, a 16-bit
device ID is shifted out on the SO pin. Byte 1, BFH, identifies the manufacturer as SST. Byte 2, 25H,
identifies the memory type as SPI Serial Flash. Byte 3, 8CH, identifies the device as SST25VF020B.
The instruction sequence is shown in Figure 22. The JEDEC Read ID instruction is terminated by a low
to high transition on CE# at any time during data output.
Figure 22:JEDEC Read-ID Sequence
Table 7: JEDEC Read-ID Data
SCK
CE#
SO
SI
MODE 3
MODE 0
SCK
CE#
Manufacturer’s ID
SO
SI
Write-Status-Register (WRSR) Word-Data Input Sequence
0 1 2 3 4 5 6 7
MSB
HIGH IMPEDANCE
MODE 3
MODE 0
Byte1
BFH
50 or 06
0 1 2 3 4 5 6 7 8
9F
MSB
HIGH IMPEDANCE
23
MODE 3
MODE 0
9 10 11 12 13
Memory Type
MSB
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
BF
Byte 2
25H
01
14
15 16
MSB
2 Mbit SPI Serial Flash
17 18
MSB
7 6 5 4 3 2 1 0
Device ID
19 20 21 22 23 24 25 26 27
REGISTER
25
STATUS
Memory Capacity
SST25VF020B
MSB
16 17 18 19 20 21 22 23
7 6 5 4 3 2 1 0
Byte 3
8CH
REGISTER 1
8C
STATUS
S71417-03-000
28 29 30 31
Data Sheet
1417 JEDECID.1
1417 EWSR1.0
T7.0 1417
02/11