33911 datasheet(15/45 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

33911

ELECTRICAL CHARACTERISTICS

DYNAMIC ELECTRICAL CHARACTERISTICS

LIN PHYSICAL LAYER: DRIVER CHARACTERISTICS FOR FAST SLEW RATE

LIN Fast Slew Rate (Programming Mode)

SRFAST

—20—

µs

LIN PHYSICAL LAYER: CHARACTERISTICS AND WAKE-UP TIMINGS(49)

Propagation Delay and Symmetry(50)

Propagation Delay Receiver, tREC_PD = max (tREC_PDR, tREC_PDF)

Symmetry of Receiver Propagation Delay tREC_PDF - tREC_PDR

tREC_PD

tREC_SYM

—

-2.0

3.0

—

6.0

2.0

µs

Bus Wake-up Deglitcher (Sleep and Stop Modes)(51)

tPROPWL

µs

Bus Wake-up Event Reported

From Sleep Mode(52)

From Stop Mode(53)

tWAKE

—

9.0

—

1500

µs

TXD Permanent Dominant State Delay

tTXDDOM

0.65

1.0

1.35

PULSE WIDTH MODULATION INPUT PIN (PWMIN)

PWMIN pin(54)

Max. frequency to drive HS and LS output pins

fPWMIN

kHz

Notes

49.

VSUP from 7.0V to 18V, bus load RBUS and CBUS 1.0nF / 1.0kΩ, 6.8nF / 660Ω, 10nF / 500Ω. Measurement thresholds: 50% of TXD

signal to LIN signal threshold defined at each parameter. See Figure 6, page 17.

50.

See Figure 9, page 18

51.

See Figure 10, page 18 for Sleep and Figure 11, page 18 for Stop Mode.

52.

The measurement is done with 1µF capacitor and 0mA current load on VDD. The value takes into account the delay to charge the

capacitor. The delay is measured between the bus wake-up threshold (VBUSWU) rising edge of the LIN bus and when VDD reaches 3.0V.

See Figure 10, page 18. The delay depends of the load and capacitor on VDD.

53.

In Stop Mode, the delay is measured between the bus wake-up threshold (VBUSWU) and the falling edge of the IRQ pin. See Figure 11,

page 18.

54.

This parameter is guaranteed by process monitoring but not production tested.

Table 4. Dynamic Electrical Characteristics (continued)

Characteristics noted under conditions 5.5V

≤ V

SUP ≤ 18V, -40°C ≤ TA ≤ 125°C for the 33911 and -40°C ≤ TA ≤ 85°C for the

34911, otherwise noted. Typical values noted reflect the approximate parameter mean at TA = 25°C under nominal conditions,

unless otherwise noted.

Characteristic

Symbol

Min

Typ

Max

Unit

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