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NXP Semiconductors

FS23

Safety system basis chip (SBC) with power management, CAN FD and LIN transceivers

TA = −40 °C to 125 °C, unless otherwise specified. VSUP = 5.5 V to 40 V, unless otherwise specified. V3 = V3UV to 5 V,

unless otherwise specified. VDDIO = 3 V to 5.5V, unless otherwise specified. All voltages referenced to ground.

Symbol

Description

Min

Typ

Max

Unit

TCAN_WU_FILT

CAN recessive/dominant filter time for wake-up

0.5

1.4

1.8

TCAN_WU_TO

CAN wake-up timeout time

0.8

10.0

Table 32. CAN FD transceiver characteristics...continued

18.2 LIN transceiver

The FS23 device includes an integrated LIN transceiver, developed in compliance with the LIN 2.2a (ISO

17987-4) and SAE-J2602-2 standards, SAE J2962-1 (2019), and IEC 62228-2 (2016) for EMC performance. It

provides the physical interface between the LIN controller of an MCU and the physical LIN bus.

The LIN transceiver bus driver is supplied by VSHS supply input. Depending on the configuration of the SPI/I2C

LIN_VSHSUV_DIS bit, the transceiver is deactivated or kept on in case of VSHS_UV (5 V). It can operate up to

VSHS = 28 V.

aaa-051460

VDIG

VSHS

LIN

VSHS

VDDIO

LINTXD

LINRXD

VDIG

VSHS

LIN

VDIG_LP

WAKE

Figure 39. LIN transceiver internal diagram

18.2.1 LIN operating modes

The LIN transceiver has four modes: Off, Wake-capable, Listen-only, and Active. The Listen-only and Active

modes are only available when the device is in Normal mode. In Low-power modes, the transceiver can be in

kept in Wake-capable mode in order to be used as a wake-up source for the device and the module.

By default, the LIN transceiver is disabled (set to Offline mode) when one of the safety outputs RSTB, FS0B, or

LIMP0 is asserted. This can be configured by SPI/I2C using LIN_FS_DIS bit.

FS23

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 7.0 — 16 October 2024

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