MCZ33989EG - System Basis Chip with HS-CAN | NXP
料号： MCZ33989EG ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.42 | $6.42 |
| 10 | $5.78 | $57.80 |
| 100 | $5.16 | $516.00 |
| 500 | $4.65 | $2,325.00 |
| 1,000 | $4.21 | $4,210.00 |
MCZ33989EG 概述
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.
直接替换替代料： MCZ33989EG ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MCZ33989EG （相同外形与封装尺寸） ——差异在于 CAN Data Rate, Package, RoHS Status, Function, Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
MCZ33742SEG
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.35 / 个
查看数据手册 →MC33989PEG
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.31 / 个
查看数据手册 →MCZ33989EG 最大额定值与电气特性
| 功能 | System Basis Chip with HS-CAN Transceiver |
| 接口 | 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 |
| 引脚数 | 28 |
| 封装 | 28-SOIC (0.295 inch, 7.50 mm width) |
| 安装类型 | Surface Mount |
| Packaging | Tube |
| Lead Free Status | Lead Free |
| RoHS 状态 | RoHS Compliant |
| Target Application | Automotive Engine Control Unit (ECU) |
MCZ33989EG 引脚配置
| 引脚 1 | VSUP — Battery supply input |
| 引脚 2 | VREG1 — Voltage regulator 1 output |
| 引脚 3 | VREG2 — Voltage regulator 2 output |
| 引脚 4 | WAKE0 — High-voltage wake-up input 0 |
| 引脚 5 | WAKE1 — High-voltage wake-up input 1 |
| 引脚 6 | WAKE2 — High-voltage wake-up input 2 |
| 引脚 7 | WAKE3 — High-voltage wake-up input 3 |
| 引脚 8 | GND — Ground |
| 引脚 9 | TXD — CAN transmit data input |
| 引脚 10 | RXD — CAN receive data output |
| 引脚 11 | CANL — CAN bus low line |
| 引脚 12 | CANH — CAN bus high line |
| 引脚 13 | SPLIT — CAN bus split termination |
| 引脚 14 | CS — SPI chip select |
| 引脚 15 | SCLK — SPI clock |
| 引脚 16 | MOSI — SPI master-out slave-in data |
| 引脚 17 | MISO — SPI master-in slave-out data |
| 引脚 18 | INT — Interrupt output to MCU |
| 引脚 19 | RST — Reset output |
| 引脚 20 | FB1 — Voltage regulator 1 feedback |
| 引脚 21 | FB2 — Voltage regulator 2 feedback |
| 引脚 22 | TEST — Test mode pin (per datasheet) |
| 引脚 23 | NC — Not connected (per datasheet) |
| 引脚 24 | NC — Not connected (per datasheet) |
| 引脚 25 | GND — Ground |
| 引脚 26 | NC — Not connected (per datasheet) |
| 引脚 27 | NC — Not connected (per datasheet) |
| 引脚 28 | EP — Exposed pad / thermal pad |
典型应用
MCZ33989EG 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： MCZ33989EG ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Combined SBC + 1 Mbaud HS-CAN in single 28-SOIC part （对比 TJA1043)
- Specific sub-family and SPI register set （对比 MCZ33742SEG)
- Automotive-rugged packaging and validation （对比 MC33989PEG)
设计说明
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.
合规信息
RoHS Compliant and Lead Free per DigiKey listing; AEC-Q100 status not stated in supplied web snippets (mark [DATA_NEEDED]).
