Overview
The MM9Z1J638BM2EP, produced by NXP USA Inc., is a fully integrated intelligent battery sensor designed for various automotive and industrial battery management applications. This device utilizes SMARTMOS technology and supports both CAN and LIN communication protocols, making it versatile for different vehicle and industrial systems.
It is part of the MM9Z1_638 family, which includes advanced features for precise battery monitoring, including current measurement via an external shunt resistor and multiple voltage measurements through internal or external resistor dividers.
Key Specifications
| Parameter | Description |
|---|---|
| Package Type | 48-PIN QFN |
| Communication Protocols | CAN, LIN 2.2/2.1/2.0 |
| Current Measurement | Precise measurement via external shunt resistor |
| Voltage Measurements | Four internal calibrated resistor dividers, up to five direct voltage measurements with external dividers |
| Temperature Measurement | Internal temperature sensor, four external temperature sensor inputs |
| Microcontroller | S12Z microcontroller with 96/128 kByte Flash, 8.0 kByte RAM, 4.0 kByte EEPROM |
| Low-Power Modes | Low-current operation with multiple wake-up sources (LIN, timer, high-voltage input, external CAN interface, current threshold) |
| Oscillator | Precision internal oscillator, connections for external crystal |
Key Features
- Precise current measurement via an external shunt resistor
- Four battery voltage measurements with internal resistor dividers, and up to five direct voltage measurements for use with an external resistor divider
- Measurement synchronization between voltage channels and current channels
- Internal temperature sensor and four external temperature sensor inputs with internal supply for external sensors
- Low-power modes with low-current operation and multiple wake-up sources (LIN, timer, high-voltage input, external CAN interface, and current threshold)
- Precision internal oscillator and connections for external crystal
- LIN 2.2/2.1/2.0 protocol and physical interface, msCAN protocol controller, and supply capability for 8 and 14 pin CAN interfaces
Applications
- 12 V lead-acid battery monitoring
- Multi-cell battery (Li-ion) monitoring
- High-voltage (HV) battery pack sensor
- Truck battery monitoring
- Automotive and industrial battery management systems (BMS)
Q & A
- What is the MM9Z1J638BM2EP used for?
The MM9Z1J638BM2EP is used for battery monitoring in various automotive and industrial applications, including 12 V, 48 V, and high-voltage battery systems.
- What communication protocols does the MM9Z1J638BM2EP support?
The device supports CAN and LIN 2.2/2.1/2.0 communication protocols.
- How does the MM9Z1J638BM2EP measure current?
The device measures current precisely via an external shunt resistor.
- What are the voltage measurement capabilities of the MM9Z1J638BM2EP?
The device can measure voltage using four internal calibrated resistor dividers and up to five direct voltage measurements with external dividers.
- Does the MM9Z1J638BM2EP have temperature measurement capabilities?
Yes, it includes an internal temperature sensor and four external temperature sensor inputs with internal supply for external sensors.
- What are the low-power modes of the MM9Z1J638BM2EP?
The device features low-current operation with multiple wake-up sources such as LIN, timer, high-voltage input, external CAN interface, and current threshold.
- What type of microcontroller does the MM9Z1J638BM2EP use?
The device uses an S12Z microcontroller with 96/128 kByte Flash, 8.0 kByte RAM, and 4.0 kByte EEPROM.
- What are some typical applications of the MM9Z1J638BM2EP?
Typical applications include 12 V lead-acid battery monitoring, multi-cell Li-ion battery monitoring, HV battery pack sensing, and truck battery monitoring.
- How does the MM9Z1J638BM2EP synchronize measurements?
The device synchronizes measurements between voltage channels and current channels.
- What is the package type of the MM9Z1J638BM2EP?
The device is packaged in a 48-PIN QFN.
