NX25F641C Ver la hoja de datos (PDF) - NexFlash -> Winbond Electronics

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NX25F641C

64M-BIT SERIAL FLASH MEMORY WITH 4-PIN SPI INTERFACE

NexFlash -> Winbond Electronics 

NX25F641C

CS

SCK

SI

Idle

C[7:0] Command

S[15:0] Sector Address

C7 C6 C5 C4 C3 C2 C1 C0 0 0 S13 S12 S11 S10 S9 S8 S7 S6 S5 S4 S3 S2 S1 S0

53H, 56H, 8DH or 8EH

CS

32 Clocks

tXS Transfer Time

SCK

SI

0 0 0 00 0 0 000 000 0 0 0

SO

15 14 13

2 1 0 15 14 13

*

High Z

Status Register

* Status Register Repeats Every 16 Clocks

Figure 11. Transfer or Compare Sector to SRAM Command Sequence

CS

SCK

SI

SCK

SI

SO

Idle

C[7:0] Command

B[15:0] Byte Address

C7 C6 C5 C4 C3 C2 C1 C0 0 0 0 0 0 0 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0

71H or 73H

SO Output is Driven

8 Clocks

1st Byte of Data

2nd Byte of Data

00 0 0 00 0 0

High-Z

D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D4 D5 D3 D2 D1 D0

CS

SCK

SO

n-Bytes of Data

Last Byte of Data

D7 D6 D5 D4 D3 D2 D1 D0

Figure 12. Read from SRAM Command Sequence

Idle

High-Z

NexFlash Technologies, Inc.

15

PRELIMINARY NXSF032A-0502

05/06/02 ©

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