23A1024-I(2011) 데이터 시트보기 (PDF) - Microchip Technology

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23A1024-I
(Rev.:2011)

1Mbit SPI Serial SRAM with SDI and SQI Interface

Microchip Technology 

23A1024/23LC1024

FIGURE 4-4:

ENTER SQI MODE (EQIO) FROM SPI MODE

CS

SCK

01234567

SI

00111000

High Impedance

SO

4.3 Exit SDI or SQI Mode

To exit from SDI mode, the RSTIO command must be

issued. The command must be entered in the current

device configuration, either SDI or SQI, see Figure 4-7

and Figure 4-8.

FIGURE 4-5:

BYTE READ MODE SQII

CS

SCK

0 1 2 3 4 5 6 7 8 9 10 11

SIO0

0 1 20 16 12 8 4 0

40

SIO1

0 1 21 17 13 9 5 1

51

SIO2

0 0 22 18 14 10 6 2

62

SIO3

0 0 23 19 15 11 7

Instruction

24-Bit Address

3

73

Dummy Byte Data Out

Note:

Note:

Page and Sequential mode is similar in that additional bytes can be clocked out before CS is brought high.

The first byte read after the address will be a dummy byte.

DS25142A-page 16

Preliminary

 2011 Microchip Technology Inc.

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