Datasheet

PCA9701_PCA9702 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 7 — 26 September 2014 11 of 29
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 UJA107xA family
• PCA970x can be powered by V1 of SBC
• Extends the SBC with 8/16 additional wake inputs
• C 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 C (standby)
CS
SDIN
SDOUT
SCLK
002aae016
IN0
PCA9701
V
SS
V
DD
INT_EN
INT
IN1
IN15
alternate
PVR100AD-B5V0
V3
UJA106x
WAKE
V1 GND
V
CC
μC
CSN
MOSI
MISO
SCLK
GND