BME680 datasheet(39/50 Pages) BOSCH

39 / 50 page

Bosch Sensortec | BME680 Datasheet

39 | 50

Modifications reserved |Data subject not change without notice | Printed in Germany

Document number: BST-BME680-DS001-00 Revision_1.0_072017

6.4.2 I²C timings

For I²C timings, the following abbreviations are used:



“S&F mode” = standard and fast mode



“HS mode” = high speed mode



Cb = bus capacitance on SDA line

All other naming refers to I²C specification 2.1 (January 2000).

The I²C timing diagram is in Picture 9. The corresponding values are given in Table 18

tHDDAT

tBUF

SDI

SCK

SDI

tLOW

tHDSTA

tSUSTA

tHIGH

tSUDAT

tSUSTO

Picture 9: I2C timing diagram

Table 18: I2C timings

Parameter

Symbol

Condition

Min

Typ

Max

Unit

SDI setup time

tSU;DAT

S&F Mode

HS mode

160

SDI hold time

tHD;DAT

S&F Mode, Cb≤100 pF

S&F Mode, Cb≤400 pF

HS mode, Cb≤100 pF

HS mode, Cb≤400 pF

115

150

SCK low pulse

tLOW

HS mode, Cb≤100 pF

VDDIO = 1.62 V

160

SCK low pulse

tLOW

HS mode, Cb≤100 pF

VDDIO = 1.2 V

210

The above-mentioned I2C specific timings correspond to the following internal added delays:



Input delay between SDI and SCK inputs: SDI is more delayed than SCK by typically 100 ns in Standard and Fast

Modes and by typically 20 ns in High Speed Mode.



Output delay from SCK falling edge to SDI output propagation is typically 140 ns in Standard and Fast Modes and

typically 70 ns in High Speed Mode.

BME680 bảng dữ liệu(PDF) 39 Page - Bosch Sensortec GmbH

BME680 bảng dữ liệu(HTML) 39 Page - Bosch Sensortec GmbH

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

bảng dữ liệu tải về

Link URL