L9780 datasheet(51/56 Pages) STMICROELECTRONICS

Part #	L9780

Description	Wide range air fuel sensor control interface

PDF	56 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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51 / 56 page

DocID026356 Rev 3

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L9780

Electrical characteristics

SPI data shift happens on rising edges. Logic timing parameters are defined in Figure 11.

Figure 11. SPI timing diagram

Table 18. Logic communications timing

Parameter

Conditions

Min.

Max.

Unit

Transfer frequency (ft)

MHz

CLK period (tCLK)

125

Enable lead time (tenLEAD)

375

Enable lag time (tenLAG)

CLK high time (tCLKH)

CLK low time (tCLKL)

SI input setup time (tSIS)

SI input hold time (tSIH)

SO access time (tSOA)

VCCI = 3.13 V; Cload = 50 pF

340

VCCI = 3.13 V; Cload = 100 pF

VCCI = 4.75 V; Cload = 50 pF

VCCI = 4.75 V; Cload = 100 pF

SO disable time (tSOD)

100

SO output valid time (tSOV)

VCCI = 3.13 V; Cload = 50 pF

VCCI = 3.13 V; Cload = 100 pF

160

VCCI = 4.75 V; Cload = 50 pF

VCCI = 4.75 V; Cload = 100 pF

SO output hold time (tSOH)

CLK hold time (tCLKHOLD)

300

CSN negated time (tCSN)

μs

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