PCA9701 datasheet(11/28 Pages) NXP

11 / 28 page

PCA9701_PCA9702_3

Product data sheet

Rev. 03 — 3 December 2008

11 of 28

NXP Semiconductors

PCA9701; PCA9702

18 V tolerant SPI 16-bit/8-bit GPI with INT

8.2.1 SBC wake port extension with cyclic biasing

System Basis Chips (SBC) offer many functions needed for in-vehicle networking

solutions. Some of the features built into SBC are:

• Transceivers (HS-CAN, LIN 2.0)

• Scalable voltage regulators

• Watchdog timers; wake-up function

• Fail-safe function

For more information on SBC, refer to

http://www.nxp.com/index.html#/pip/pip=[pfp=53482]|pp=[t=pfp,i=53482].

8.2.1.1

UJA106x with PCA9701, standby

• PCA970x ﬁts to SBC UJA106x and UJA107x family

• PCA970x can be powered by V1 of SBC

• Extends the SBC with 8/16 additional wake inputs

•

µC can be set to stop-mode during standby to save ECU standby current. SBC with

GPI periodically monitors the wake inputs

– Cyclic bias via V3

– Very low system current consumption even with clamped switches

Fig 9.

UJA106x with PCA9701 with supplied

µC (standby)

SDIN

SDOUT

SCLK

002aae016

IN0

PCA9701

VSS

VDD

INT_EN

INT

IN1

IN15

alternate

PVR100AD-B5V0

UJA106x

WAKE

GND

VCC

µC

CSN

MOSI

MISO

SCLK

GND

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