X25320PI datasheet(5/15 Pages) XICOR

tên linh kiện	X25320PI

Giải thích chi tiết về linh kiện	SPI Serial E2PROM With Block LockTM Protection

PDF	15 Pages

Scroll/Zoom	100%

nhà sản xuất	XICOR [Xicor Inc.]

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X25320

Figure 1. Read E2PROM Array Operation Sequence

Operational Notes

The X25320 powers-up in the following state:

• The device is in the low power standby state.

• A HIGH to LOW transition on

CS is required to

enter an active state and receive an instruction.

• SO pin is high impedance.

• The “write enable” latch is reset.

Data Protection

The following circuitry has been included to prevent

inadvertent writes:

• The “write enable” latch is reset upon power-up.

• A WREN instruction must be issued to set the “write

enable” latch.

•

CS must come HIGH at the proper clock count in

order to start a write cycle.

Figure 2. Read Status Register Operation Sequence

0123456789

20 21 22 23 24 25 26 27 28 29 30

76543210

DATA OUT

SCK

MSB

HIGH IMPEDANCE

INSTRUCTION

16 BIT ADDRESS

15 14 13

3210

3063 ILL F03

0123456789

10 11 12 13 14

76543210

DATA OUT

SCK

MSB

HIGH IMPEDANCE

INSTRUCTION

3063 ILL F04

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