Battery Sensor with CAN and LIN
Design Files
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Battery Sensor with LIN for 12 V Lead-Acid Batteries
The NXP® MM912_637 battery sensors are integrated battery monitoring devices that allow simultaneous measurement of current and voltage for precise determination of SOC (State of Charge), SOH (State of Health), and other parameters.
- The integrated temperature sensor combined with the close proximity to the battery allows battery temperature measurement
- Multiple application-specific hardware blocks reduce MCU overhead and related power consumption
- Configurable low-power modes with automated battery state observation and sophisticated wake-up capability further reduce current consumption
- The integrated LIN 2.1 interface allows communication and control of battery monitoring functions
Product Details
Features
CPU Core
- S12 microcontroller with 128 kByte (J) or 96 kByte (I) Flash
- 4 kByte Data Flash
- 6 kBytes of RAM
- Background debug (BDM)
Standard I/O
- 8 x MCU General Purpose I/O including SPI functionality
- 4 x 5V GPIO including one Wake Up capable High Voltage Input (PTB3/L0)
- 16-Bit, 4 Channel - Timer Module (TIM16B4C)
- 8-Bit, 2 Channel - Pulse width modulation module (PWM)
Application Specific Functions
- Battery Voltage Measurement
- Battery Current Measurement in up to 8 ranges
- Accurate internal oscillator (for extended accuracy an external quartz oscillator may be used)
- Normal and 2 low-power modes
- Communication via LIN 2.1, LIN2.0 bus interface
- Triggered wake-up from LIN and periodic wake-up
- Signal Low Pass Filtering (Current, Voltage)
- PGA (programmable low-noise gain amplifier) with automatic gain control feature
- Current threshold detection and current averaging in standby/wake-up from low-power mode
- External Temperature Sensor Option (TSUP, VTEMP)
- Optional 2nd external voltage sense input (VOPT)
- On-chip temperature measurement
- Industry standard EMC compliance
- Load supply voltage 3.5 V (Min), 28 V (Max)
Product Longevity Program
- This product is included in NXP®.s product longevity program, with assured supply for a minimum of 10 years after launch
Part numbers include: MM912I637AM2EP, MM912J637AM2EP.
Related products
Buy/Parametrics
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Documentation
Quick reference to our documentation types.
4 documents
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Data Sheet
MM912_637D1, Intelligent Integrated Precision Battery Sensor - Data SheetFeatured
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Errata
MM912_637, Silicon Mask - ErrataFeatured
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Selector Guide
Analog Automotive and Industrial Selector Guide
Design Resources
Software
Quick reference to our software types.
1 software file
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BSPs and Device Drivers
LIN2.x and SAE J2602 Stack
Note: For better experience, software downloads are recommended on desktop.
Engineering Services
To get further assistance directly from NXP, please see our Engineering Services.
4 engineering services
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Independent Design House (IDH)
Hardware Design Services
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Independent Design House (IDH)
Hardware/Software Engineering Services
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Original Design Manufacturer (ODM)
Hardware and Software Engineering Services
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Independent Design House (IDH)
Embedded Software Design
To find additional partner offerings that support this product, visit our Partner Marketplace.