L99DZ320 datasheet(38/146 Pages) STMICROELECTRONICS

38 / 146 page

1. Slave mode.

2. Specified by design, not tested in production.

Table 38. LIN transceiver timing

Symbol

Parameter

Test condition

Min. Typ. Max. Unit Item

tRXpd

Receiver propagation delay time

tRXpd = max(tRXpdr,tRXpdf);

tRXpdf = t(0.5 VRXD) -t(0.45 VLIN);

tRXpdr = t(0.5 VRXD) -t(0.55 VLIN);

VS = 12 V; CRXD = 20 pF;

Rbus = 1 kΩ, Cbus = 1 nF;

Rbus = 660 Ω, Cbus = 6.8 nF; Rbus = 500 Ω, Cbus = 10 nF

μs

E.084

tRXpd_sym

Symmetry of receiver propagation

delay time (rising vs. falling edge)

tRXpd_sym = tRXpdr-tRXpdf;

VS = 12 V;

Rbus = 1 kΩ, Cbus = 1 nF ;

CRXD = 20 pF

-2

μs

E.085

Duty cycle 1

THRec(max) = 0.744*VS; THDom(max) = 0.581*VS;

VS = from 7 V to 18 V, tbit = 50 μs;

D1 = tbus_rec(min) / (2xtbit);

Rbus = 1 kΩ, Cbus = 1 nF;

Rbus = 660 Ω, Cbus = 6.8 nF; Rbus = 500 Ω, Cbus = 10 nF

0.396

E.086

Duty cycle 2

THRec(min) = 0.422*VS; THDom(min) = 0.284*VS;

VS = from 7.6 V to 18 V, tbit = 50 μs;

D2 = tbus_rec(max) /(2xtbit);

Rbus = 1 kΩ, Cbus = 1 nF;

Rbus = 660 Ω, Cbus = 6.8 nF; Rbus = 500 Ω, Cbus = 10 nF

0.581

E.087

Duty cycle 3

THRec(max) = 0.778*VS; THDom(max) = 0.616*VS;

VS = from 7 V to 18 V, tbit = 96 μs;

D3 = tbus_rec(min) /(2xtbit);

Rbus = 1 kΩ, Cbus = 1 nF;

Rbus = 660 Ω, Cbus = 6.8 nF; Rbus = 500 Ω, Cbus = 10 nF

0.417

E.088

Duty cycle 4

THRec(min) = 0.389*VS; THDom(min) = 0.251*VS;

VS = from 7.6 V to 18 V, tbit = 96 μs;

D4 = tbus_rec(max) /(2xtbit);

Rbus = 1 kΩ, Cbus = 1 nF;

Rbus = 660 Ω, Cbus = 6.8 nF; Rbus = 500 Ω, Cbus = 10 nF

0.590

E.089

tdom(TXDL) TXDL dominant time out

Tested by scan

ms E.090

tLIN

LIN permanent recessive time out

Tested by scan

μs

E.091

Tdom(bus)

LIN bus permanent dominant time-

out

Tested by scan

ms E.092

L99DZ320

Electrical specifications

DS14235 - Rev 5

page 38/146

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