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* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
Document Number: CD1030
Rev. 3.0, 1/2016
NXP Semiconductors
Data sheet: Advance Information
© NXP NXP B.V.
33 Channel Multiple Switch Detection
Interface with Programmable Wetting
Current
The CD1030 is designed to detect the closing and opening of up to 33 switch
contacts. The switch status, either open or closed, is transferred to the
microprocessor unit (MCU) through a serial peripheral interface (SPI). This
SMARTMOS device also features a 35-to-1 analog multiplexer for reading the
input channels as analog inputs. The analog selected input signal is buffered
and provided on the AMUX output pin for the MCU to read.
Independent programmable wetting currents are available as needed for the
application. A battery and temperature monitor are included in the IC and
available via the AMUX pin.
The CD1030 device has two modes of operation, Normal and Low-power mode
(LPM). Normal mode allows programming of the device and supplies switch
contacts with pull-up or pull-down current as it monitors the change of state on
the switches. The LPM provides low quiescent current, which makes the
CD1030 ideal for automotive and industrial products requiring low sleep-state
currents.
Features
• Fully functional operation 4.5 V ≤ V
BATP
≤ 36 V
• Full parametric operation 6.0 V ≤ V
BATP
≤ 28 V
• Operating switch input voltage range from -1.0 V to 36 V
• 12 programmable inputs (switches to battery or ground)
• 21 switch-to-ground inputs
• Selectable wetting current (2.0, 6.0, 8.0, 10, 12, 14, 16, or 20 mA)
• Interfaces directly to an MCU using 3.3 V / 5.0 V SPI protocol
• Selectable wake-up on change of state
• Typical standby current I
BATP
= 50 μA and I
DDQ
= 10 μA
• Active interrupt (INT_B) on switch state change
• Integrated battery and temperature sensing
Figure 1. CD1030 Simplified Application Diagram
MULTIPLE SWITCH DETECTION INTERFACE
CD1030
Applications
• Automotive
• Heating ventilation and air conditioning (HVAC)
• Lighting
• Central gateway / in-vehicle networking
• Gasoline engine management
• Industrial
• Programmable logic control (PLC)
• Process control, temperature control
• Input-output control (I/O Control)
• Single board computer
• Ethernet switch
AE SUFFIX (PB-FREE)
98ASA00173D
48-PIN LQFP-EP
SP0
SG1
SG20
SG0
SP11
SP1
Battery
VBATP
VDDQ
MISO
MOSI
SCLK
AMUX
EP
GND
WAKE_B
Battery
Power
Supply
Power
Supply
V
DDQ
MCU
MISO
MOSI
SCLK
AN0
INT_B
CS_B
CSB
INTB
SG1
CD1030
页面指南
