NXP Semiconductors KM3x 32-bit Microcontrollers
NXP Semiconductors KM3x 32-bit Microcontrollers are precision metrology MCUs with segment LCDs and are based on the Arm® Cortex®-M0+ core. These modules provide a cost-effective and highly integrated solution for single-chip one-, two-, and three-phase electricity meters that require powerful 32-bit processing capability, precision-analog, security, and HMI functionality. These KM3x microcontrollers from NXP provide security with active and passive tamper detection with time stamping and support high-precision internal voltage reference with low-temperature drift. The comprehensive enablement suite includes reference designs. Typical applications for the KM3x series include energy meters, industrial measurement and sensing, and flow meters, such as heat, water, and gas.
Features
- MCUs
- High-performance Cortex-M0+ core and up to 75MHz of core clock frequency
- 512/256/64KB single array flash
- Supports v6-M instruction set architecture (ISA), including all 16-bit v7-M instructions plus a number of 32-bit thumb-2 instructions
- PLL to generate clocks for AFE
- Input range of 31.25kHz to 39.0625kHz
- Output range of 11.72MHz to 14.65MHz
- FLL to generate core, system, and flash clocks
- Input range of 31.25kHz to 39.0625kHz
- Output range of 20MHz to 50MHz
- Flexible modes of operation
- 2 internal trimmable clock references
- 32kHz
- 4MHz
- AFE
- 24-bit sigma-delta ADC with 94dB SNR
- Programmable gain amplifier with gains from 1 to 32 with low-temperature drift
- High-precision internal voltage reference with low-temperature drift
- Security
- Tamper detection with time stamping
- Random number generator and memory protection unit
- Memory mapped cryptographic acceleration unit (MMCAU) for AES encryption
- Cyclic redundancy check (CRC)
- Operations
- 1.71V to 3.6V voltage range (without AFE)
- 2.7V to 3.6V voltage range (with AFE)
- -40°C to +105°C operating temperature range
Applications
- Electricity meters
- Flow meters, including heat, water, and gas
- Industrial measurement and sensing
- Electric vehicle (EV) chargers
Block Diagram
Application Examples
Additional Resources
Development Tools
NXP Semiconductors TWR-KM34Z50M Development Module
Provide a development platform for the KM3x and KM1x families of Kinetis® MCUs.
NXP Semiconductors TWR-KM35Z75M Development Module
Designed to provide a development platform for the KM3x family of Kinetis® MCUs.
Related Microcontrollers
NXP Semiconductors KM1x 32-bit Microcontrollers
Mainstream precision metrology MCUs based on the Arm® Cortex®-M0+ core.
Paskelbta: 2020-06-24
| Atnaujinta: 2024-12-30