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NXP Semiconductors MC33CD1030AER2
- Part No.:
- MC33CD1030AER2
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 48-LQFP Exposed Pad
- Datasheet:
-
MC33CD1030AER2.pdf
- Description:
- IC INTERFACE SPECIALIZED 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
MC33CD1030AER2 from NXP Semiconductors is a 33-channel SMARTMOS switch detection interface IC with programmable wetting current, SPI serial interface, and integrated 35:1 analog multiplexer. It operates from 4.5 V to 36 V, supports Normal/Low-power/Polling modes, and delivers 50 μA battery current in LPM for automotive body control modules requiring robust switch monitoring under harsh voltage conditions.
For engineers reviewing the MC33CD1030AER2 datasheet, MC33CD1030AER2 pinout, MC33CD1030AER2 application, or MC33CD1030AER2 equivalent, key selection criteria include its 21 SG + 12 SP configurable inputs, ±1.0 V to 36 V input voltage tolerance, selectable wetting currents (2–20 mA), AMUX-based battery/temperature sensing, and wake-up capability via INT_B, WAKE_B, or CS_B falling edges.
Technical Context
The MC33CD1030AER2 integrates dual oscillators (4.0 MHz for Normal mode, 192 kHz for Low-power mode) to drive programmable polling and interrupt timers. Its input detection uses a 4.0 V comparator threshold with hysteresis, supporting both switch-to-ground (SG) and switch-to-battery (SB) configurations across 33 channels.
It implements comparator-only wake detection during Low-power mode, with sustained 2.0 mA current for 416 μs upon state change before transitioning to full wetting current. The AMUX output buffers selected SG/SP channel signals, includes integrated 1/6 divider for battery sensing on SG5, and provides die temperature via the same pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 4.5 V to 36 V VBATP; functional down to 4.5 V, full parametrics from 6.0 V to 28 V |
| Low-Power Mode Current | IBATP = 50 μA; enables ultra-low quiescent consumption in automotive sleep states |
| Switch Channels | 33 total: 21 SG inputs (pull-up only) + 12 SP inputs (configurable SG/SB) |
| Wetting Current | Selectable 2.0, 6.0, 8.0, 10, 12, 14, 16, or 20 mA; pulse or continuous operation |
| Input Voltage Range | −1.0 V to +36 V per channel; survives reverse battery and load dump up to 40 V |
| AMUX Functionality | 35:1 analog multiplexer with buffered output; supports battery voltage (via SG5 ÷6), die temperature, and all SG/SP channels |
| SPI Interface | 3.3 V / 5.0 V compatible; CS_B, SCLK, MOSI, MISO; supports register read/write and fault reporting |
Pinout & Package
LQFP-48 package with exposed pad (EP), rated for −40 °C to +125 °C ambient operation. Pin 1 is SP2; EP must be connected to system ground for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SG0–SG20 | Switch-to-Ground Input | 21 dedicated pull-up current sources; detect closure to GND with 4.0 V comparator threshold |
| SP0–SP11 | Programmable Switch Input | 12 configurable pins: SG (pull-up) or SB (pull-down); support wider topology flexibility |
| VDDQ | Logic Supply Input | 3.3 V / 5.0 V supply setting SPI I/O level and AMUX buffer reference |
| VBATP1/VBATP2 | Battery Supply Input | Dual-pin connection for high-current battery feed; requires external reverse-battery diode |
| INT_B | Open-Drain Interrupt Output | Active-low signal indicating switch state change; also accepts falling edge to wake from LPM |
| WAKE_B | Wake-Up Control I/O | Open-drain output (driven low in Normal mode); accepts falling edge as wake trigger with optional VDDQ check |
| AMUX | Analog Multiplexer Output | Buffered analog output for MCU ADC reading; carries battery voltage (÷6), die temp, or selected SG/SP channel |
| CS_B/SCLK/MOSI/MISO | SPI Interface Pins | Standard 4-wire SPI interface; CS_B active-low chip select enables register access and configuration |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Wetting Current | Eight discrete levels (2–20 mA) with pulse/continuous selection - prevents contact corrosion while minimizing power and heat |
| Integrated Battery Monitoring | SG5 routed through internal 1/6 divider to AMUX - enables direct 12 V/24 V battery voltage measurement without external components |
| Die Temperature Sensing | On-die thermal sensor output via AMUX - provides real-time junction temperature feedback for thermal management |
| Comparator-Only Wake Detection | Active during LPM without current sourcing - detects switch transitions at <1 μA additional current, enabling true ultra-low-power monitoring |
| Robust Fault Protection | Integrated overvoltage (up to 40 V), overtemperature (>155 °C), UVLO, and SPI error detection - reports faults via dedicated register bits |
Applications
| Automotive Door Module | Industrial Control Panel |
|---|---|
Use Scenario: Monitoring 28 door, window, and mirror switch inputs in a vehicle door ECU under 12 V/24 V battery supply with load dump transients. IC Role / Device Role / Timing Role: Primary switch detection interface; replaces discrete comparators and GPIO expanders; handles wetting current sequencing and LPM wake timing. Use Value: Eliminates need for external wetting current sources and voltage dividers; AMUX reduces MCU ADC channel count by consolidating battery/temperature/switch reads. | Use Scenario: Centralized monitoring of 33 pushbutton, toggle, and rotary switch inputs on a factory HMI panel operating in −40 °C to +85 °C environments. IC Role / Device Role / Timing Role: High-voltage tolerant switch interface with programmable debounce and wake-on-change; SPI enables centralized configuration and status polling. Use Value: Withstands industrial ESD and supply noise; LPM extends standby time for battery-backed panels; SG/SP flexibility supports mixed grounding topologies. |
| Heavy-Duty Vehicle Cab Console | Commercial Appliance Control Board |
Use Scenario: Detecting ignition, hazard, wiper, and headlight switches in an off-road vehicle cab where battery voltage swings from 6 V (crank) to 36 V (load dump). IC Role / Device Role / Timing Role: Voltage-resilient switch monitor with undervoltage lockout and POR recovery; WAKE_B drives local regulator enable for system-level power sequencing. Use Value: Maintains reliable detection across extreme VBATP range; built-in UVLO prevents spurious SPI communication during cranking; no external protection required beyond reverse-battery diode. | Use Scenario: Managing 33 user-accessible function switches and safety interlocks in a commercial oven or HVAC controller with strict thermal safety requirements. IC Role / Device Role / Timing Role: Safety-relevant switch monitor with overtemperature shutdown and thermal flag reporting; AMUX provides redundant temperature verification. Use Value: Integrated tLIM detection at 155 °C with 15 °C hysteresis ensures fail-safe thermal response; die temperature readback via AMUX supports predictive thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switch detection interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33CD1029AER2 | 32-channel version; lacks SG5 ÷6 battery divider; no die temperature sensing on AMUX | Suitable for simpler switch arrays without integrated battery/temperature monitoring | Select when reduced channel count and absence of AMUX-based sensing are acceptable |
| TPS65987D | USB-C PD controller with 8 GPIOs; no wetting current, no AMUX, no LPM wake capability | Targeted at USB-C port control, not general-purpose high-channel switch monitoring | Not a functional alternative; only relevant if USB-C interface dominates system architecture |
Compared with MC33CD1030AER2, MC33CD1029AER2 offers lower channel density and missing AMUX features but shares identical LPM architecture and wetting programming; TPS65987D serves a fundamentally different protocol-specific role and cannot replace MC33CD1030AER2 in switch detection applications.
Availability
MC33CD1030AER2 is available at Aetrix Electronics and suitable for automotive body control modules, industrial HMI systems, heavy-duty vehicle consoles, and commercial appliance control boards requiring stable component supply across extended temperature and voltage ranges.
Supply support for MC33CD1030AER2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in high-reliability analog and mixed-signal ICs.
The CD1030 product line is designed specifically for automotive-grade switch monitoring in harsh electrical environments, emphasizing voltage resilience, ultra-low-power sleep modes, and integrated diagnostics for ASIL-B–capable systems.
FAQ
What is the maximum number of switch inputs supported by the MC33CD1030AER2?
The MC33CD1030AER2 supports exactly 33 switch detection channels: 21 dedicated Switch-to-Ground (SG) inputs and 12 programmable Switch (SP) inputs that can be configured as either SG or Switch-to-Battery (SB). This count is fixed per the device architecture and confirmed in the functional block diagram and pin definitions of the Rev. 6.0 datasheet.
Does the MC33CD1030AER2 require external components for battery voltage monitoring?
No, the MC33CD1030AER2 does not require external components for basic battery voltage monitoring. Its integrated 1/6 voltage divider on SG5 feeds directly into the AMUX output, enabling the MCU to read scaled battery voltage (e.g., 12 V → 2.0 V) using a single ADC channel. External filtering may be added for noise immunity, but no resistive divider is needed.
How does the MC33CD1030AER2 handle reverse battery conditions?
The MC33CD1030AER2 withstands reverse battery at its inputs without damage due to internal blocking diodes from each SG/SP pin to VBATP. However, the VBATP pins themselves require an external blocking diode to prevent reverse current flow into the IC's internal regulators - this is explicitly mandated in Section 7 of the datasheet and applies to MC33CD1030AER2.
Can the MC33CD1030AER2 operate with only VBATP applied, without VDDQ?
Yes, the MC33CD1030AER2 powers internal circuitry and performs switch detection with only VBATP applied; however, SPI communication, AMUX output, and INT_B/WAKE_B logic-level signaling remain inactive until VDDQ (3.3 V or 5.0 V) is present. The device retains register settings and detects wake events (e.g., switch change), but cannot report status until VDDQ is restored.
What is the purpose of the polling timer in Low-power mode for the MC33CD1030AER2?
The polling timer in Low-power mode configures periodic, brief activation of wetting current (1.0 mA for SG, 2.0 mA for SB) to verify switch state without full wake-up. It minimizes average current while detecting transitions - critical for battery-powered systems. The timer duration and active pulse width (tACTIVEPOLL) are programmable via SPI registers before entering LPM.
MC33CD1030AER2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 48-LQFP Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Switch Monitoring
- Interface:
- SPI
- Voltage - Supply:
- 4.5V ~ 36V
- Supplier Device Package:
- 48-HLQFP (7x7)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
MC33CD1030AER2 FAQ
1.How can I place an order for MC33CD1030AER2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33CD1030AER2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC33CD1030AER2 reliable?
The price and inventory of MC33CD1030AER2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33CD1030AER2 is usually 5 days.
3.What payment methods are accepted for MC33CD1030AER2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33CD1030AER2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33CD1030AER2?
MC33CD1030AER2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33CD1030AER2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC33CD1030AER2?
For technical support, including MC33CD1030AER2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33CD1030AER2 requirements.
6.How does Aetrix verify that MC33CD1030AER2 is sourced from the original manufacturer or authorized distributors?
All MC33CD1030AER2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC33CD1030AER2 meets industry standards.
7.What is the process for return or replacement of MC33CD1030AER2?
All MC33CD1030AER2 units undergo pre-shipment inspection (PSI). If there is an issue with MC33CD1030AER2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC33CD1030AER2 part is unused and in its original packaging.
Return procedure for MC33CD1030AER2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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