L9780 datasheet(50/56 Pages) STMICROELECTRONICS

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Electrical characteristics

L9780

50/56

DocID026356 Rev 3

Table 16. Timing

Parameter

Conditions

Min.

Max.

Unit

Heater PWM frequency

Design information

600

State machine clock (Tsmc)

Bit MCP[1..0] = 00

40000

TOSC

Bit MCP[1..0] = 01

80000

Bit MCP[1..0] = 10

200000

Bit MCP[1..0] = 11

400000

RCT1 switch time (tR)

nitp: decimal conversion of ITPT[6..0];

lower value limited by hardware to

nitp = 25. No pulse if set to 0.

2*nitp

RCT1 band-gap switch time (tB) ncbt: decimal conversion of CBT[6..0]

2*ncbt

INRC switch extension time

(tINRC)

ninrc: decimal conversion of ISPT[2..0]

960*ninrc

1024*ninrc

S&H settling time (tspl)

A/D conversion time (tAD)

Settling delay

td1

td2

td3

SY assertion time

SY de-assertion time

Integrator settling time

Time from VCCSEN de assertion to

parking functionality activation

-1

Table 17. Diagnostic filter times

Parameter

Conditions

Min.

Max.

Unit

Heater short to ground filter time

960

1024

TOSC

Heater short to battery filter time

STBHFT[1..0] = 00

STBHFT[1..0] = 01

STBHFT[1..0] = 10

STBHFT[1..0] = 11

Sensor short to battery filter time On SR, INRC, SNS pins

Sensor short to ground filter time On INRC, SNS pins

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