NM25C040 View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

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NM25C040

4K-Bit Serial CMOS EEPROM (Serial Peripheral Interface (SPI) Synchronous Bus)

Fairchild Semiconductor 

AC Test Conditions (Continued)

FIGURE 1. Synchronous Data Timing Diagram

VIH

CS

VIL

tCSS

VIH

SCK

VIL

VIH

,
, SI

VIL

VOH

SO

, VOL

tCLH

tCLL

tDIS

tPD

tDIN

tDH

tCSH

tCSN

tDF

FIGURE 2. HOLD Timing

SCK

tHDS

HOLD

SO

tHDN

tHZ

tHDS

tHDN

tLZ

FIGURE 3. SPI Serial Interface

MASTER MCU

DATA OUT (MOSI)

DATA IN (MISO)

SERIAL CLOCK (CLK)

SPI

SS0

CHIP

SS1

SELECTION SS2

SS3

5

NM25C040 Rev. D.1

NM25C040

SI

SO

SCK

CS

SI

SO

SCK

CS

SI

SO

SCK

CS

SI

SO

SCK

CS

DS012401-3

DS012401-6

DS012401-4

www.fairchildsemi.com

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