SA25F005 Saifun, SA25F005 Datasheet - Page 17

• Manufacturer Part Number: SA25F005
• Description: 512Kb Serial Flash
• Manufacturer: Saifun

Functional Description
Instructions
Figure 9 presents a schematic diagram of
the SA25F005's SPI serial interface.
MICROCONTROLLER
MASTER:
SERIAL CLOCK
DATA OUT
Figure 9. SPI Serial Interface
DATA IN
SSO
SS1
SS2
SS3
SI
SO
SCK
CSb
SI
SO
SCK
CSb
SI
SO
SCK
CSb
SI
SO
SCK
CSb
SA25F005
SLAVE
The SA25F005's SPI consists of an 8-bit
instruction register that decodes a specific
instruction
different instructions (called opcodes) are
incorporated in the device for various
operations. Table 6 lists the instruction set
and the format for proper operation. All
opcodes, array addresses and data are
transferred
fashion. Detailed information about each of
these opcodes is provided for the individual
instruction descriptions in the sections that
follow.
FAST_READ
Instruction
READ_ID
Program
WREN
WRSR
RDSR
READ
Name
WRDI
Page
RES
PE
SE
BE
SP
Table 6. Instruction Set
to
+3 dummy bytes
+3 dummy bytes
in
Instruction
0000 0110
0000 0100
0000 0101
0000 0001
0000 0011
0000 1011
0000 0010
1000 0001
1101 1000
1100 0111
1011 1001
1010 1011
1010 1011
1010 1011
Format
be
SA25F005 Advanced Information
an
executed.
MSB-first-LSB-last
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Set Write Enable
Latch
Reset Write Enable
Latch
Read Status
Register
Write Status
Register
Read Data from
Memory Array
Read Data from
Memory Array
Write Data to
Memory Array
Page Erase
Sector Erase
Bulk Erase
Software Protect
Release from
Software Protect
Mode
Release from
Software Protect +
Read ID
Read ID
Operation
Thirteen
SAIFUN
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