FS6407 datasheet(19/111 Pages) NXP

19 / 111 page

NXP Semiconductors

FS6407/FS6408

CAN dynamic characteristics

tDOUT

TXD Dominant State Timeout

0.8

–

5.0

tDOM

Bus Dominant Clamping Detection

0.8

–

5.0

tLOOP

Propagation Loop Delay TXD to RXD

•RLOAD = 120 Ω, C between CANH and CANL = 100 pF,

C at RxD < 15 pF

–

255

t1PWU

Single Pulse Wake-up Time

0.5

–

5.0

µs

t3PWU

Multiple Pulse Wake-up Time

0.5

–

1.0

µs

t3PTO1

Multiple Pulse Wake-up Timeout (120 µs bit selection)

100

120

–

µs

t3PTO2

Multiple Pulse Wake-up Timeout (360 µs bit selection)

330

360

–

µs

tCAN_READY

Delay to Enable CAN by SPI Command (NCS rising edge) to CAN to

Transmit (device in normal mode and CAN interface in TX/RX mode)

–

100

µs

(18)

Fail-safe state machine

OSCFSSM

Oscillator

405

–

495

kHz

CLKFS_MIN

Fail-safe Oscillator Monitoring

150

–

kHz

tIC_ERR

IO_0:5 Filter Time

4.0

–

µs

tACK_FS

Acknowledgement Counter (used for IC error handling IO_1 and IO_5)

7.0

–

9.7

t_DFS_RECOVERY IO_0 Filter Time to Recover from Deep Reset and Fail State

0.8

–

1.3

tIO1_DRIFT_MON

IO_1 filter time

1.0

–

2.0

Fail-safe output

tRSTB_FB

RSTB Feedback Filter Time

8.0

–

µs

tFSOB_FB

FS0B Feedback Filter Time

8.0

–

µs

tRSTB_BLK

RSTB Feedback Blanking Time

180

–

320

µs

tFSOB_BLK

FS0B Feedback Blanking Time

180

–

320

µs

tRSTB_POR

Reset Delay Time (after a Power On Reset or from LPOFF)

15.9

23.6

(19)

tRSTB_LG

Reset Duration (long pulse)

8.0

–

tRSTB_ST

Reset duration (short pulse)

1.0

–

1.3

tRSTB_IN

External Reset Delay time

8.0

–

µs

tDIAG_SC

Fail-safe Output Diagnostic Counter (FS0B)

550

–

800

µs

VSUP voltage supply

CSUP

Minimum capacitor on Vsup

–

µF

Notes

18.

For proper CAN operation, TXD must be set to high level before CAN enable by SPI, and must remain high for at least TCAN_READY.

19.

This timing is not guaranteed in case of fault during startup phase (after Power On Reset of from LPOFF)

Table 5. Dynamic electrical characteristics (continued)

TCASE = -40 °C to 125 °C, unless otherwise specified. VSUP = VSUP_UV_L to 36 V, unless otherwise specified. All voltages referenced to

ground.

Symbol

Parameter

Min.

Typ.

Max.

Unit

Notes

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