SST25VF040B-20-4C-QAE Microchip Technology, SST25VF040B-20-4C-QAE Datasheet - Page 10

• Manufacturer Part Number: SST25VF040B-20-4C-QAE
• Description: Flash 512K X 8 14 us
• Manufacturer: Microchip Technology

Specifications of SST25VF040B-20-4C-QAE

• Product Category: Flash
• Rohs: yes
• Memory Size: 4 Mbit
• Interface Type: SPI
• Access Time: 20 ns
• Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Package / Case: WSON-8

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©2011 Silicon Storage Technology, Inc.
Read (25/33 MHz)
The Read instruction, 03H, supports up to 25 MHz (for SST25VF040B-50-xx-xxF) or 33 MHz (for
SST25VF040B-80-xx-xxE) Read. The device outputs the data starting from the specified address
location. The data output stream is continuous through all addresses until terminated by a low to high
transition on CE#. The internal address pointer will automatically increment until the highest memory
address is reached. Once the highest memory address is reached, the address pointer will automati-
cally increment to the beginning (wrap-around) of the address space. Once the data from address
location 1FFFFFH has been read, the next output will be from address location 000000H.
The Read instruction is initiated by executing an 8-bit command, 03H, followed by address bits [A
A
sequence.
Figure 5: Read Sequence
0
SCK
CE#
]. CE# must remain active low for the duration of the Read cycle. See Figure 5 for the Read
6. To continue programming to the next sequential address location, enter the 8-bit command, ADH, followed by 2 bytes of
7. The Read-Status-Register is continuous with ongoing clock cycles until terminated by a low to high transition on CE#.
8. Manufacturer’s ID is read with A
SO
SI
data to be programmed. Data Byte 0 will be programmed into the initial address [A
programmed into the
initial address [A
turer’s ID and device ID output stream is continuous until terminated by a low-to-high transition on CE#.
MODE 3
MODE 0
MSB
0 1 2 3 4 5 6 7 8
23
-A
1
03
] with A
HIGH IMPEDANCE
0
=1.
0
=0, and Device ID is read with A
MSB
ADD.
15 16
10
ADD.
23 24
ADD.
MSB
31 32
0
4 Mbit SPI Serial Flash
=1. All other address bits are 00H. The Manufac-
D
OUT
N
39 40
D
N+1
OUT
23
47 48
-A
1
D
N+2
] with A
OUT
SST25VF040B
55 56
0
=0, Data Byte 1 will be
D
N+3
OUT
S71295-06-000
63 64
D
1295 ReadSeq.0
Data Sheet
N+4
OUT
70
02/11
23
-