1

Description

The M95M02 devices are electrically erasable programmable memory (EEPROM) organized as 262144 x 8 bits,

accessed through the SPI bus.

Over an ambient temperature range of -40 °C / +85 °C the M95M02-DR can operate with a supply voltage from

1.8 to 5.5 V. Over an ambient temperature range of -20 °C / +85 °C the M95M02-DF can operate with a supply

voltage from 1.7 to 5.5 V.

The M95M02 devices offer an additional page, named the Identification page (256 bytes). The Identification page

can be used to store sensitive application parameters that can be (later) permanently locked in read-only mode.

Figure 1. Logic diagram

MS45413V1

S

VCC

HOLD

M95xxx

W

Q

C

D

VSS

The SPI bus signals are C, D and Q, as shown in Figure 1 and Table 1. The device is selected when chip select

(S) is driven low. Communications with the device can be interrupted when the HOLD is driven low.

Table 1. Signal names

Signal name

Function

Direction

C

Serial clock

Input

D

Serial data input

Input

Q

Serial data output

Output

S

Chip select

Input

W

Write protect

Input

HOLD

Hold

Input

VCC

Supply voltage

-

VSS

Ground

-

M95M02-DR M95M02-DF

Description

DS7024 - Rev 13

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