NCV7471 Datasheet, PDF (1/51 Pages) ON Semiconductor – System Basis Chip

NCV7471, NCV7471A
System Basis Chip with a
High-Speed CAN, Two LINs
and a Boost-Buck DC/DC
Converter
NCV7471(A) is a System Basis Chip (SBC) integrating functions
typically found in automotive Electronic Control Units (ECUs) in the
body domain. NCV7471 provides and monitors the low−voltage
power supplies for the application microcontroller and other loads,
monitors the application software via a watchdog and includes
high−speed CAN and LIN transceivers allowing the ECU to host
multiple communication nodes or to act as a gateway unit. The
on−chip state controller ensures safe power−up sequence and supports
low−power modes with a configurable set of features including
wakeup from the communication buses or by a local digital signal
WU. The status of several NCV7471(A) internal blocks can be read by
the microcontroller through the serial peripheral interface or can be
used to generate an interrupt request.
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SSOP36−EP
DQ SUFFIX
CASE 940AB
MARKING DIAGRAM
XXXX
AWLYYWWG
G
Features
• Control Logic
♦ Ensures safe power−up sequence and the correct reaction to
different supply conditions
XXXX = NCV7471−5 or NCV7471A−5
A
= Assembly Location
WL = Wafer Lot
♦ Controls mode transitions including the power management and
wakeup treatment − bus wakeups, local wakeups (via WU pin) and
cyclic wakeups (through the on−chip timer)
♦ Generates reset and interrupt requests
YY = Year
WW = Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
• Serial Peripheral Interface
♦ Operates with 16−bit frames
♦ Ensures communication with the ECU’s microcontroller unit
♦ Mode settings, chip status feedback and watchdog are accessible
ORDERING INFORMATION
See detailed ordering and shipping information on page 50 of
this data sheet.
through eight twelve−bits registers
• 5 V VOUT Supply from a DC/DC Converter
♦ Can be used as a wake−up source or as a logical
♦ Can deliver up to 500 mA with accuracy of ±2%
♦ Supplies typically the ECU’s microcontroller
input polled through SPI
• Protection and Monitoring Functions
• 5 V VOUT2 Low−drop Output Regulator
♦ Monitoring of the main supply through the V_MID
♦ Can supply external loads – e.g. sensors
♦ Controlled by SPI and the state machine
♦ Protected against short to the car battery
• A High−speed CAN Transceiver
♦ ISO11898−2 and ISO11898−5 compliant
♦ Communication speed up to 1 Mbps
♦ TxD dominant time−out protection
• Two LIN Transceivers
♦ LIN2.X and J2602 compliant
♦ TxD dominant time−out protection
• Wakeup Input WU
♦ Edge−sensitive high−voltage input
point
♦ Monitoring of VOUT supply output with
programmable threshold
♦ VOUT2 supply diagnosis through SPI and interrupt
♦ Thermal warning and thermal shutdown protection
♦ Programmable watchdog monitoring the ECU
software
• NCV Prefix for Automotive and Other Applications
Requiring Unique Site and Control Change
Requirements; AEC−Q100 Qualified and PPAP
Capable
• These Devices are Pb−Free, Halogen Free/BFR Free
and are RoHS Compliant
© Semiconductor Components Industries, LLC, 2015
1
August, 2015 − Rev. 4
Publication Order Number:
NCV7471/D