SST25VF020B データシートの表示（PDF） - Microchip Technology

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SST25VF020B

2 Mbit SPI Serial Flash

Microchip Technology 

A Microchip Technology Company

2 Mbit SPI Serial Flash

SST25VF020B

Data Sheet

Read (33 MHz)

The Read instruction, 03H, supports up to 33 MHz Read. The device outputs the data starting from the

specified address location. The data output stream is continuous through all addresses until termi-

nated 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 automatically increment to the beginning (wrap-around) of the address space. Once the

data from address location 3FFFFH 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 [A23-

A0]. CE# must remain active low for the duration of the Read cycle. See Figure 5 for the Read

sequence.

CE#

MODE 3

SCK MODE 0

0 1 2345 6 78

15 16

23 24 31 32 39 40

47 48 55 56 63 64 70

SI

03

MSB

ADD.

MSB

ADD.

HIGH IMPEDANCE

SO

Figure 5: Read Sequence

ADD.

N

DOUT

MSB

N+1

DOUT

N+2

DOUT

N+3

DOUT

N+4

DOUT

1417 ReadSeq.0

©2011 Silicon Storage Technology, Inc.

11

S71417-03-000

02/11

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