M95640RMB3TP datasheet(11/46 Pages) STMICROELECTRONICS

Part #	M95640RMB3TP

Description	32 Kbit and 64 Kbit serial SPI bus EEPROMs with high-speed clock

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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M95320, M95640, M95320-x, M95640-x

Connecting to the SPI bus

11/46

3.1

SPI modes

These devices can be driven by a microcontroller with its SPI peripheral running in either of

the two following modes:

●

CPOL=0, CPHA=0

●

CPOL=1, CPHA=1

For these two modes, input data is latched in on the rising edge of Serial Clock (C), and

output data is available from the falling edge of Serial Clock (C).

The difference between the two modes, as shown in Figure 4, is the clock polarity when the

bus master is in Stand-by mode and not transferring data:

●

C remains at 0 for (CPOL=0, CPHA=0)

●

C remains at 1 for (CPOL=1, CPHA=1)

Figure 4.

SPI modes supported

AI01438B

C

MSB

CPHA

D

0

1

CPOL

0

1

Q

C

MSB

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M95640RMB3TP Datasheet(PDF) 11 Page - STMicroelectronics

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