M95P16-EXCSSLASHEF datasheet(10/63 Pages) STMICROELECTRONICS

Part #	M95P16-EXCS/EF

Description	Ultra low power 16 Mbit serial SPI page EEPROM with dual and quad outputs

PDF	63 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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10 / 63 page

3.6

Write protect (W-DQ2)

This pin is a CMOS input with no internal pull-up/down, and an output push-pull buffer. The main purpose of this

signal is to freeze the size of the area of memory protected against Write instructions (as specified by the values

in the BPn and TB bits of the Status register).

This pin must be driven either high or low, and must be stable during all Write instructions. It supports dual and

quad output read (see Section 4.3 and Section 4.4).

With the fast read quad output command, the Write protect pin (W-DQ2) becomes an output pin, after the last bit

of the third address bytes of the command. In conjunction with other pins, this allows four bits of data on DQ2 to

be clocked-in on every falling edge of SCK.

For consistency with the SPI nomenclature, this pin is referred to as W, unless specifically addressing the Quad

output mode, in which case it is referred to as DQ2.

3.7

VCC (VCC, supply voltage)

VCC is the device core power supply.

3.8

VSS (VSS, ground)

VSS is the reference for all signals, including the VCC supply voltage.

M95P16-I M95P16-E

Write protect (W-DQ2)

DS13710 - Rev 1

page 10/63

M95P16-EXCS/EF Datasheet(PDF) 10 Page - STMicroelectronics