STTS424E02 datasheet(14/51 Pages) STMICROELECTRONICS

部件名	STTS424E02

功能描述	Memory module temperature sensor with a 2 Kb SPD EEPROM

PDF	51 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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14 / 51 page

Temperature sensor operation

STTS424E02

14/51

3.3

SMBus/I2C AC timing consideration

In order for this device to be both SMBus- and I2C-compatible, it complies to a subset of

each specification. The requirements which enable this device to co-exist with devices on

either an SMBus or an I2C bus include:

●

The SMBus minimum clock frequency is required.

●

The 300 ns SMBus data hold time (THD:DAT) is required (see Figure 7 and Table 2 on

page 15.

●

The SMBus time-out is maximum 40 ms (temperature sensor only).

Note:

Since the voltage levels are specified only within 3.3 V ±10%, there are no compatibility

concerns with the SMBus/I2C DC specifications.

Figure 7.

SMBus/I2C timing diagram

A12266

SCL

tSU:STO

tSU:STA

SDA

VIH

VIL

VIH

VIL

tSU:DAT

tHD:DAT

tHIGH

tLOW

tHD:STA

tBUF

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