SST25PF080B データシートの表示（PDF） - Microchip Technology
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SST25PF080B Datasheet PDF : 32 Pages
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SST25PF080B
4.8.7 READ-ID (RDID)
The Read-ID instruction (RDID) identifies the devices
as SST25PF080B and manufacturer as Microchip. This
command is backward compatible and should be used
as default device identification when multiple versions
of SPI Serial Flash devices are used in a design. The
device information can be read from executing an 8-bit
command, 90H or ABH, followed by address bits [A23-
A0]. Following the Read-ID instruction, the manufac-
turer’s ID is located in address 00000H and the device
ID is located in address 00001H. Once the device is in
Read-ID mode, the manufacturer’s and device ID out-
put data toggles between address 00000H and 00001H
until terminated by a low to high transition on CE#.
Refer to Tables 4-6 and 4-7 for device identification
data.
CE#
MODE 3 0 1 2 3 4 5 6 7 8
15 16
23 24 31 32 39 40 47 48 55 56
63
SCK MODE 0
SI
90 or AB
00
00
ADD1
MSB
MSB
HIGH
SO
HIGH IMPEDANCE
BF
Device ID
BF
IMPEDANCE
Device ID
MSB
Note: The manufacturer's and device ID output stream is continuous until terminated by a low to high transition on CE#.
Device ID = 8EH for SST25PF080B
1. 00H will output the manfacturer's ID first and 01H will output device ID first before toggling between the two.
25137 RdID.0
FIGURE 4-19:
READ-ID SEQUENCE
TABLE 4-7: PRODUCT IDENTIFICATION
Manufacturer’s ID
Device ID
SST25PF080B
Address
00000H
00001H
Data
BFH
8EH
DS25134A-page 18
2012 Microchip Technology Inc.
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