MCZ33989EG - System Basis Chip with HS-CAN | NXP
MPN: MCZ33989EG ✓ Hoạt độngMCZ33989EG Tóm tắt
A System Basis Chip (SBC) is a category of mixed-signal automotive IC that integrates power management, communication transceivers, and supervisory functions into a single package, reducing ECU bill-of-materials and PCB area. Within the broader taxonomy, an SBC combines a linear voltage regulator (LDO), a CAN (Controller Area Network) physical layer transceiver, and housekeeping circuitry such as reset generation, watchdog, and wake-up input monitoring. The MCZ33989EG specifically targets automotive ECUs where a high-speed CAN bus is required alongside multiple regulated rails and microcontroller housekeeping functions.
Key features of the MCZ33989EG include its integrated 1 Mbaud HS-CAN transceiver compliant with ISO 11898-5 physical layer requirements, two on-chip voltage regulators (typically a 5V and a sensor/tracking supply), four high-voltage wake-up inputs capable of monitoring battery voltage in standby, and an SPI port for configuration and status readback. The device provides VSUP undervoltage and overvoltage detection, fault output via an interrupt pin, and thermal shutdown protection. Together these functions allow an MCU to share the same supply rail, monitor ignition and battery conditions, and participate in a CAN network without separate transceiver and supervisor ICs.
Architecturally, the MCZ33989EG integrates a CAN physical layer driver/receiver matching the ISO 11898 standard, low-dropout regulators, an SPI slave controller, and analog comparators for wake-up and voltage supervision. The CAN bus pins support up to 1 Mbaud operation and feature integrated dominant time-out protection to prevent the bus from being locked by a faulty node. The MCZ33989EG is suitable for 12V automotive electrical systems with load-dump and jump-start transients handled by the wide VSUP range.
Typical applications for the MCZ33989EG include automotive Engine Control Units (ECUs), Transmission Control Units (TCUs), Body Control Modules (BCMs), and other in-vehicle modules requiring a regulated MCU supply plus a high-speed CAN interface. The same chip is also used in industrial CAN nodes where 12V battery power is available.
When designing with the MCZ33989EG, ensure that the VSUP pin is properly reverse-battery protected and decoupled with a bulk capacitor capable of surviving load-dump pulses. The CAN bus requires 60 ohm split termination between CANH and CANL at each end of the bus segment. Wake-up inputs should be debounced through the SPI-configured digital filter to avoid false waking from ECU noise.
This page synthesizes distributor pricing from DigiKey/Mouser, available drop-in alternatives, and design notes not collected in a single place in the manufacturer datasheet, supporting procurement and design engineers during both new development and field replacement.
Bộ thay thế dễ dàng lắp đặt cho MCZ33989EG — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MCZ33989EG (cùng hình factor và footprint) — khác nhau ở CAN Data Rate, Package, RoHS Status, Function, Operating Temperature.
MCZ33742SEG
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →MC33989PEG
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →MCZ33989EG Tỷ lệ tối đa & tính chất điện
| Chức năng | System Basis Chip with HS-CAN Transceiver |
| Giao diện | CAN, SPI |
| Number of Voltage Regulators | 2 |
| CAN Data Rate | Up to 1 Mbaud |
| Wake-up Inputs | 4 high-voltage inputs |
| SPI Interface | Yes (MCU configuration and status) |
| VSUP Monitoring | Undervoltage/overvoltage fault detection |
| Số lượng chân | 28 |
| Hộp | 28-SOIC (0.295 inch, 7.50 mm width) |
| Kiểu lắp đặt | Surface Mount |
| Packaging | Tube |
| Lead Free Status | Lead Free |
| Trạng thái RoHS | RoHS Compliant |
| Target Application | Automotive Engine Control Unit (ECU) |
Cấu hình chân MCZ33989EG
| Chân 1 | VSUP — Battery supply input |
| Chân 2 | VREG1 — Voltage regulator 1 output |
| Chân 3 | VREG2 — Voltage regulator 2 output |
| Chân 4 | WAKE0 — High-voltage wake-up input 0 |
| Chân 5 | WAKE1 — High-voltage wake-up input 1 |
| Chân 6 | WAKE2 — High-voltage wake-up input 2 |
| Chân 7 | WAKE3 — High-voltage wake-up input 3 |
| Chân 8 | GND — Ground |
| Chân 9 | TXD — CAN transmit data input |
| Chân 10 | RXD — CAN receive data output |
| Chân 11 | CANL — CAN bus low line |
| Chân 12 | CANH — CAN bus high line |
| Chân 13 | SPLIT — CAN bus split termination |
| Chân 14 | CS — SPI chip select |
| Chân 15 | SCLK — SPI clock |
| Chân 16 | MOSI — SPI master-out slave-in data |
| Chân 17 | MISO — SPI master-in slave-out data |
| Chân 18 | INT — Interrupt output to MCU |
| Chân 19 | RST — Reset output |
| Chân 20 | FB1 — Voltage regulator 1 feedback |
| Chân 21 | FB2 — Voltage regulator 2 feedback |
| Chân 22 | TEST — Test mode pin (per datasheet) |
| Chân 23 | NC — Not connected (per datasheet) |
| Chân 24 | NC — Not connected (per datasheet) |
| Chân 25 | GND — Ground |
| Chân 26 | NC — Not connected (per datasheet) |
| Chân 27 | NC — Not connected (per datasheet) |
| Chân 28 | EP — Exposed pad / thermal pad |
Ứng dụng tiêu biểu
MCZ33989EG phù hợp cho 6 Áp dụngs: Engine Control Unit (ECU), Transmission Control Unit (TCU), Body Control Module (BCM), Industrial CAN Node, CAN-Based Diagnostics Tool, Chassis Control Module.
Engine Control Unit (ECU)
The MCZ33989EG is purpose-built for automotive Engine Control Units. Its integrated HS-CAN transceiver supports up to 1 Mbaud data rate, allowing the ECU to exchange torque, RPM, and diagnostic data over the powertrain CAN bus. The two on-chip voltage regulators power the MCU core and sensor inputs, eliminating a discrete regulator IC. VSUP undervoltage/overvoltage detection protects the ECU during cranking, load-dump, and jump-start transients in the 12V automotive supply, while the four high-voltage wake-up inputs monitor ignition-key states without extra components. This combination slashes BOM and PCB area for engine management modules where every cm² of under-hood layout matters.
Được đề xuất
Transmission Control Unit (TCU)
Transmission Control Units use the MCZ33989EG to combine a regulated MCU supply and a 1 Mbaud capable HS-CAN interface on a single die. The TCU communicates shift and torque commands over the powertrain CAN bus; the integrated CAN transceiver ensures clean ISO 11898-compliant signal integrity at 500 kbaud and 1 Mbaud rates. Four wake inputs simplify clutch-pedal or gear-sensor monitoring without external resistor dividers. SPI gives the MCU read-write access to fault registers, wake configuration, and regulator trim, enabling software-driven diagnostics required by OBD-II for transmission modules.
Được đề xuất
Body Control Module (BCM)
Body Control Modules benefit from the MCZ33989EG's combination of a regulated MCU supply, four wake-up inputs, and an HS-CAN interface in a single 28-SOIC part. The wake inputs can monitor door, ignition, and accessory-switched battery voltage directly without external dividers or protection diodes. The HS-CAN port exchanges mirror, lighting, and diagnostic messages with other body-domain ECUs at up to 1 Mbaud. VSUP monitoring detects start-stop and dark-current conditions automatically, allowing the MCU to implement OEM-grade sleep and wake cycles. The integrated architecture reduces BCM bill of materials by 2-3 ICs per board.
Được đề xuất
Industrial CAN Node
Industrial automation controllers that already operate on 12V (or 24V with pre-regulation) battery/rail supplies can adopt the MCZ33989EG for a compact, AEC-Q-style solution. The HS-CAN physical layer supports classic CANopen and DeviceNet protocols at up to 1 Mbaud, allowing deterministic peer-to-peer communication with PLCs and motor drives. The integrated voltage regulators power the host MCU and any small analog sensors from the same supply rail. Wake-up inputs double as industrial interlock inputs. Because the same silicon is used in automotive ECUs, an industrial module inherits high tolerance to ground shift and EMI.
Được đề xuất
CAN-Based Diagnostics Tool
Garage and production-line diagnostic tools can use the MCZ33989EG as the CAN physical interface plus a regulated MCU supply. The 1 Mbaud HS-CAN capability supports rapid UDS (Unified Diagnostic Services) sessions, while the SPI port allows the host MCU to log fault codes and status from the SBC's on-chip registers. The wake-up inputs double as ignition-key or accessory-sensing inputs for diagnostic reset. Combined with a USB-to-SPI bridge, the MCZ33989EG allows compact OBD-II dongle designs that fit the J1962 connector envelope.
Được đề xuất
Chassis Control Module
Chassis Control Modules for ABS, ESC, and steering use the MCZ33989EG for a rugged MCU supply and a 1 Mbaud capable HS-CAN link to the chassis CAN bus. The integrated VSUP monitoring warns the MCU of low battery during cranking, allowing graceful shutdown before the regulator drops out of regulation. Four high-voltage wake inputs capture wheel-speed-sensor power-good or other chassis-domain signals without external conditioning. The 28-SOIC package and high ambient temperature tolerance suit the harsh underbody or wheel-well mounting conditions of chassis modules.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MCZ33989EG — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MCZ33742SEG | MC33989PEG |
|---|---|---|---|
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Function | System Basis Chip + HS-CAN | System Basis Chip | System Basis Chip + HS-CAN |
| Voltage Regulators | 2 | Multiple | 2 |
| Wake-up Inputs | 4 | Multiple | 4 |
| SPI Interface | Yes | Yes | Yes |
| RoHS Status | RoHS Compliant | RoHS Compliant | RoHS Compliant |
Bảo phân biệt quan trọng
- Combined SBC + 1 Mbaud HS-CAN in single 28-SOIC part (vsTJA1043)
- Specific sub-family and SPI register set (vsMCZ33742SEG)
- Automotive-rugged packaging and validation (vsMC33989PEG)
Ghi chú thiết kế
Add a robust reverse-battery and load-dump protection network on the VSUP pin. Typical BOM includes a series N-channel MOSFET or Schottky diode for reverse-polarity, plus a TVS diode sized for 40V load-dump transients. Decouple VSUP with a 47 uF or larger bulk capacitor and a 100 nF ceramic close to the pin; SBC wake-up and CAN bus operation depend on clean battery voltage during cranking dips. Estimated: at VIN=12V with two regulators loaded, internal dissipation is modest (<500 mW) but is dominated by the LDO drop, not by the MCU itself.
Place the 28-SOIC's exposed pad / thermal land over a continuous copper pour connected to GND to dissipate heat. The two regulator output capacitors should be placed within 5 mm of their respective pins and use low-ESR ceramic types. The CAN bus traces (CANH/CANL) should be a matched-length differential pair with characteristic impedance ~120 ohms, routed over a continuous GND reference plane, and kept away from switching noise sources.
Do not forget split termination at the CAN bus ends - a 60 ohm resistor network (typically 2 x 30 ohm plus 10 nF to GND) is required on CANH and CANL at each end of the bus segment. Failing to do so increases ringing and EMI. Also, ensure SPI read commands during transmit transitions do not produce incorrect fault reads; poll the SBC's status registers only after TX completes, or read them through the chip's internal queueing. Wake-up inputs source current from VSUP; do not drive them with voltages higher than VSUP without current limiting.
Thông tin tuân thủ
RoHS Compliant and Lead Free per DigiKey listing; AEC-Q100 status not stated in supplied web snippets (mark [DATA_NEEDED]).
