CAT25010HU4E-GT3 Просмотр технического описания (PDF) - ON Semiconductor

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CAT25010HU4E-GT3

1-Kb, 2-Kb and 4-Kb SPI Serial CMOS EEPROM

ON Semiconductor 

CAT25010, CAT25020, CAT25040

Write Status Register

The Status Register is written by sending a WRSR

instruction according to timing shown in Figure 7. Only bits

2 and 3 can be written using the WRSR command.

Write Protection

When WP input is low all write operations to the memory

array and Status Register are inhibited. WP going low while

CS is still low will interrupt a write operation. If the internal

write cycle has already been initiated, WP going low will

have no effect on any write operation to the Status Register

or memory array. The WP input timing is shown in Figure 8.

CS

SCK

01

2

3

4

5

6

78

9 10 11 12 13 14 15

OPCODE

SI

0

0

0

0

00

SO

HIGH IMPEDANCE

Dashed Line = mode (1, 1)

0

1

7

6

5

MSB

Figure 7. WRSR Timing

DATA IN

4 32

10

tWPS

tWPH

CS

SCK

WP

WP

Dashed Line = mode (1, 1)

Figure 8. WP Timing

http://onsemi.com

8

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