MKM14Z128ACHH5R

ARM微控制器 - MCU Kinetis KM14: 50MHz Cortex-M0+ Metrology MCU, 128KB Flash, 16KB SRAM, 44-LGA

Overview

Kinetis® KM1x MCUs enable single-chip one-, two-, and three-phase electricity meters, as well as flow meter and other precision measurement applications.

* Includes a powerful analog front end

* Provides security, including memory protection, tamper detection, and protection of supplier/user data

* Supports high-precision internal voltage reference with low temperature drift

* Features a comprehensive enablement suite including reference designs

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## Features

### MCU

* High-performance Arm® Cortex®-M0 core, up to 50 MHz of core clock frequency

* 128 KB/64 KB 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: 31.25 kHz to 39.0625 kHz

* Output range: 11.72 MHz to 14.65 MHz

* FLL to generate core, system and flash clocks

* Input range: 31.25 kHz to 39.0625 kHz

* Output range: 20 MHz to 50 MHz

* Flexible modes of operation

* Two internal trim-able clock references

* 32 kHz

* 4 MHz

### Analog Front End

* 24-bit sigma delta ADC with 94 dB 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, memory protection unit

### Interfaces

* High accuracy RTC +5 ppm over temperature range

* 4x UART, 2x SPI, 2x IIC

### Operating Voltage and Temperature Range

* Voltage range 1.71 volts - 3.6 volts without AFE

* Voltage range 2.7 volts - 3.6 volts with AFE

* Temperature range -40°C to 85°C

## Features