NX25P40-VNI Просмотр технического описания (PDF) - NexFlash -> Winbond Electronics

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NX25P40-VNI

1M-BIT, 2M-BIT AND 4M-BIT Serial Flash Memory with 40MHz SPI

NexFlash -> Winbond Electronics 

1M / 2M / 4M-BIT SERIAL FLASH MEMORY with 40MHz SPI

NX25P10, NX25P20 AND NX25P40

Fast Read (0Bh)

The Fast Read instruction is similar to the Read Data

instruction except that it can operate at the highest possible

frequency of FR (see AC Electrical Characteristics). This is

accomplished by adding a “dummy” byte after the 24-bit

address as shown in figure 9. The dummy byte allows the

1 devices internal circuits additional time for setting up the

initial address. The dummy byte data value on the DI pin is

a “don’t care”.

2

CS

Mode 3

CLK Mode 0

0 1 2 3 4 5 6 7 8 9 10 28 29 30 31

3

Instruction (0Bh)

24-Bit Address

DI

23 22 21

3210

4

DO

5

CS

CLK

DI

DO

32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

Dummy Byte

76 543210

Data Out 1

Data Out 2

76 5 4 32 107 654321 07

*

*

*

* = MSB

Figure 9. Fast Read Instruction Sequence Diagram

6

7

8

9

10

11

12

NexFlash Technologies, Inc.

15

PRELIMINARY MKP-0009 Rev 6 NXSF040I-0405

04/04/05 ©

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