NXP Semiconductors

35FS4500, 35FS6500

Grade 0 safety power system basis chip with CAN flexible data transceiver

35FS4500-35FS6500SDS

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Short data sheet: advance information

Rev. 1.0 — 15 December 2017

7 / 19

VSUP1

VSUP2

VSENSE

SELECT

NC

VSUP3

FS1B

GND_COM

CAN_5V

CANH

CANL

IO_4

VCORE

IO_5/VKAM

NC

IO_0

VCORE_SNS

FB_CORE

MISO

NCS

VDDIO

INTB

SCLK

MOSI

1

4

2

3

5

10

6

7

8

9

11

12

36

33

35

34

32

27

31

30

29

28

26

25

Figure 6. 35FS4500 pinout with CAN and FS1B

7.2 Pin description

Table 3.  35FS4500/35FS6500 pin definition

Pin

Symbol

Type

Definition

1

VSUP1

A_IN

Power supply of the device. An external reverse battery protection diode in

series is mandatory.

2

VSUP2

A_IN

Second power supply. Protected by the external reverse battery protection

diode used for VSUP1. VSUP1 and VSUP2 must be connected together

externally.

3

VSENSE

A_IN

Sensing of the battery voltage. Must be connected prior to the reverse battery

protection diode.

4

VSUP3

A_IN

Third power supply dedicated to the device supply. Protected by the external

reverse battery protection diode used for VSUP1. Must be connected

between the reverse protection diode and the input PI filter.

5

FS1B

D_OUT

Second output of the safety block (active low). The pin is asserted low at

start-up and when a fault condition is detected, with a configurable delay or

duration versus FS0B output terminal. Open drain structure.

6

GND_COM

GROUND

Dedicated ground for physical layers

7

CAN_5V

A_OUT

Output voltage for the embedded CAN FD interface

8

CANH

A_IN/OUT

CAN output high. If CAN function is not used, this pin must be left open.

9

CANL

A_IN/OUT

CAN output low. If CAN function is not used, this pin must be left open.