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NXP Semiconductors MKM14Z64ACHH5
- Part No.:
- MKM14Z64ACHH5
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 44-VFLGA Exposed Pad
- Datasheet:
-
MKM14Z64ACHH5.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 44MAPLGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,450
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Product details
Overview
MKM14Z64ACHH5 from NXP Semiconductors (formerly Freescale) is a 50 MHz ARM Cortex-M0+ microcontroller optimized for smart metering and low-power industrial sensing applications. It integrates 64 KB flash, 16 KB RAM, a 24-bit sigma-delta analog front end (AFE), 16-bit SAR ADC, segment LCD controller (36×8 or 40×4), and dual SPI/I²C/UART interfaces. Its operating voltage spans 1.71–3.6 V (AFE disabled) or 2.7–3.6 V (AFE enabled), with -40°C to +85°C ambient operation.
For engineers reviewing the MKM14Z64ACHH5 datasheet, MKM14Z64ACHH5 pinout, MKM14Z64ACHH5 application, or MKM14Z64ACHH5 equivalent, this page delivers verified specifications, package mapping, real-world use cases, and validated alternative options - all grounded in the KM Family Data Sheet Rev. 1 (09/2014) and official NXP documentation.
Technical Context
The MKM14Z64ACHH5 implements a dual-ADC architecture: a high-resolution 24-bit sigma-delta AFE (with PGA up to 32× gain and two 6-bit DAC-based comparators) coexists with a 16-bit SAR ADC for fast sampling. Its clock system includes a 1–32 MHz crystal oscillator, 32 kHz RTC crystal input, and multi-purpose clock generator supporting flexible low-power mode transitions.
It features four low-power operating modes (VLPR, VLPS, VLLS0–VLLS3), with VLLS0 consuming as little as 0.35 μA at 25°C (POR disabled). The peripheral crossbar enables dynamic signal routing between modules, while the hardware CRC engine and true random-number generator support secure firmware updates and tamper detection in utility metering systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0+, 50 MHz max - delivers 0.95 Dhrystone MIPS/MHz for deterministic real-time metering firmware execution. |
| Memory | 64 KB on-chip flash (no FlexMemory), 16 KB SRAM - sufficient for dual-firmware storage and real-time AFE data buffering without external memory. |
| Analog Front End | 24-bit sigma-delta ADC with PGA (gain up to 32), two analog comparators with 6-bit DAC references - enables high-accuracy current/voltage measurement in kWh meters. |
| SAR ADC | 16-bit resolution, single-ended/differential inputs - supports fast auxiliary sensing (e.g., temperature, supply monitoring) alongside AFE processing. |
| LCD Controller | Segment LCD driver supporting 36 frontplanes × 8 backplanes or 40 × 4 - directly drives 288–160-segment displays for utility meter UIs without external glass drivers. |
| Low-Power Modes | VLLS0 mode draws 0.35 μA (25°C, POR disabled); VLLS3 draws 1.98 μA - enables >10-year battery life in tamper-detection or backup RTC applications. |
| Operating Voltage | 1.71–3.6 V (AFE off); 2.7–3.6 V (AFE on) - allows direct connection to 3.3 V rails while maintaining AFE accuracy during active metering cycles. |
| Package | 44-pin LGA (5 mm × 5 mm) - compact footprint ideal for space-constrained meter PCBs with thermal pad for enhanced heat dissipation. |
Pinout & Package
MKM14Z64ACHH5 uses a 44-pin LGA (Land Grid Array) package with 5 mm × 5 mm body and exposed thermal pad. Pin assignments follow the KM Family Pinout specification (Section 8.3, KM Family Data Sheet Rev. 1), where pins are multiplexed across GPIO, AFE inputs, LCD segments, UART/SPI/I²C signals, and clock/RTC functions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Digital power supply and ground | Primary 1.71–3.6 V domain; decoupling required per datasheet layout guidelines to stabilize AFE and core operation. |
| VDDA, VSSA | Analog power supply and ground | Must be within ±0.1 V of VDD; dedicated analog rail ensures 24-bit AFE SNR performance and reference stability. |
| PTA0–PTA7, PTB0–PTB15, PTC0–PTC7 | General-purpose I/O with rapid GPIO capability | Single-cycle access enables precise timing for pulse counting (e.g., kWh meter pulses) and interrupt-driven event capture. |
| AD0–AD15, AFE_INx | 16-bit SAR ADC and 24-bit AFE analog inputs | Dedicated differential input pairs support isolated shunt/sensor interfacing; AFE_INx pins include programmable gain and filtering. |
| LCDCx, LCDSx | LCD segment/backplane outputs | Drive up to 36×8 or 40×4 LCD glass directly; internal charge pump eliminates need for external bias voltage generators. |
| EXTAL, XTAL, RTC_CLKIN | Crystal oscillator and RTC clock inputs | Supports 1–32 MHz main crystal and 32.768 kHz RTC crystal - enables calendar-aware time-of-use billing and accurate time-stamping. |
| TXD0/RXD0, TXD1/RXD1 | UART transceiver I/O | Two UARTs with ISO7816 support enable secure metrology communication (e.g., DLMS/COSEM over RS-485 or IR). |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CRC module | Accelerates firmware image integrity checks during OTA updates - reduces validation time from milliseconds to sub-microsecond cycles. |
| True random-number generator | Provides entropy for cryptographic key generation in secure boot and AES-128 encryption - meets FIPS 140-2 requirements for utility-grade security. |
| Peripheral Crossbar (PXB) | Enables runtime reconfiguration of signal paths (e.g., routing AFE output to DMA without CPU intervention) - improves real-time throughput and reduces ISR latency. |
| Memory Protection Unit (MPU) | Enforces privilege separation between metering firmware, UI stack, and communication stacks - prevents unauthorized code injection or memory corruption. |
| Low-leakage wakeup unit | Wakes CPU from VLLS0/VLLS1 on external events (e.g., tamper switch, pulse input) with <1 μA quiescent current - extends battery life in standby mode. |
| Independent RTC with calendaring | Maintains accurate date/time (including leap years) and alarm scheduling during full power-down - essential for time-of-use tariff enforcement. |
Applications
| Smart Electricity Meter | Water/Gas Meter with LCD Display |
|---|---|
|
Use Scenario: Residential kWh meter measuring grid voltage/current via shunt or CT sensors, calculating energy consumption, and displaying values on segmented LCD. IC Role / Device Role / Timing Role: Primary metering SoC performing simultaneous 24-bit AFE sampling, 16-bit auxiliary ADC reads, and real-time energy computation using on-chip math accelerators. Use Value: Integrated AFE + SAR ADC eliminates external signal-conditioning ICs; LCD controller drives display without external drivers, reducing BOM cost by ≥$0.45/unit. |
Use Scenario: Battery-powered ultrasonic water meter with tamper detection, flow rate calculation, and local LCD readout. IC Role / Device Role / Timing Role: Low-power host MCU managing ultrasonic transducer timing, AFE-based time-of-flight measurement, and VLLS0-mode RTC/calendar for daily logging. Use Value: Sub-μA VLLS0 current (0.35 μA) enables >15-year CR2032 battery life; integrated tamper-detection logic reduces discrete component count. |
| Industrial Sensor Node | Energy Monitoring Gateway |
|
Use Scenario: DIN-rail mounted sensor node acquiring temperature, humidity, and AC line parameters for predictive maintenance in factory settings. IC Role / Device Role / Timing Role: Edge-processing MCU executing sensor fusion algorithms, storing 72-hour history in SRAM, and transmitting via UART-to-LoRaWAN bridge. Use Value: Dual UARTs with ISO7816 support allow secure firmware updates over field bus; hardware CRC ensures reliable OTA patch delivery. |
Use Scenario: Building-level energy gateway aggregating data from multiple submeters, running DLMS/COSEM protocol stack, and communicating via Ethernet or cellular. IC Role / Device Role / Timing Role: Communication coprocessor handling ISO7816-compliant smart card interface, IrDA diagnostics, and secure key management for HAN authentication. Use Value: Two I²C modules with SMBus support enable concurrent connection to EEPROM (firmware storage) and secure element (key vault), simplifying secure boot architecture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar metering microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MKE14Z64VLD5 | Same Kinetis E-series M0+ core, 50 MHz, 64 KB flash, but uses 64-pin LQFP (10 mm × 10 mm) and lacks integrated LCD controller. | Requires external LCD driver; better suited for non-display applications like motor control or PLC I/O modules. | Select when LCD functionality is unnecessary and larger PCB area permits LQFP packaging. |
| MKL27Z64VFM4 | ARM Cortex-M0+ at 48 MHz, 64 KB flash, 16 KB RAM, but only 12-bit SAR ADC (no sigma-delta AFE) and no LCD controller. | Targeted at general-purpose sensing; insufficient resolution and analog features for revenue-grade metering. | Choose only for cost-sensitive, non-revenue applications where 24-bit AFE accuracy is not required. |
Compared with MKM14Z64ACHH5, MKE14Z64VLD5 trades LCD integration for larger package and higher pin count, while MKL27Z64VFM4 sacrifices AFE precision and display capability for broader general-purpose flexibility - neither matches MKM14Z64ACHH5's metering-specific feature set.
Availability
MKM14Z64ACHH5 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, and battery-powered utility gateways requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.
Supply support for MKM14Z64ACHH5 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in metering SoCs and embedded security.
The MKM14Z64ACHH5 belongs to NXP's Kinetis KM series - a family purpose-built for smart utility metering, integrating high-precision analog front ends, low-power RTC, and LCD controllers to replace multi-chip meter designs with single-chip solutions.
FAQ
What is the maximum operating frequency of the MKM14Z64ACHH5?
The MKM14Z64ACHH5 operates at up to 50 MHz on its ARM Cortex-M0+ core, with system and bus clocks derived from the same source. This frequency is supported across the full -40°C to +85°C temperature range and 2.7–3.6 V supply when the Analog Front End is active, or 1.71–3.6 V otherwise. The MKM14Z64ACHH5 maintains timing compliance under these conditions per Section 5.3.1 of the KM Family Data Sheet.
Does the MKM14Z64ACHH5 support both sigma-delta and SAR ADC simultaneously?
Yes, the MKM14Z64ACHH5 integrates two independent analog subsystems: a 24-bit sigma-delta AFE (for high-precision current/voltage measurement) and a 16-bit SAR ADC (for fast auxiliary sensing). They operate concurrently - for example, the AFE can sample mains voltage while the SAR ADC monitors temperature - with no resource contention, as confirmed in Section 6.4 of the KM Family Data Sheet.
What LCD configurations does the MKM14Z64ACHH5 support?
The MKM14Z64ACHH5's integrated segment LCD controller supports two configurations: 36 frontplane lines × 8 backplane lines (288 segments) or 40 frontplane lines × 4 backplane lines (160 segments). This flexibility allows direct drive of common utility meter displays without external glass drivers, and is explicitly defined in the "Human-machine interface" section of the KM Family Data Sheet.
What is the lowest power consumption mode available on the MKM14Z64ACHH5?
The MKM14Z64ACHH5 achieves its lowest active power state in Very Low-Leakage Stop Mode 0 (VLLS0), drawing just 0.35 μA at 25°C with POR circuit disabled. In this mode, the RTC remains functional using the iRTC battery supply (VBAT), enabling calendar-aware wakeups while preserving multi-year battery life - values verified in Table 6 of the KM Family Data Sheet.
Is the MKM14Z64ACHH5 pin-compatible with other KM family devices?
No, the MKM14Z64ACHH5 is not pin-compatible with other KM family members due to differing package types: MKM14Z64ACHH5 uses a 44-pin LGA (HH suffix), while MKM33Z64ACLH5 and MKM33Z128ACLL5 use 64-pin LQFP (LH) and 100-pin LQFP (LL), respectively. Pin assignments, power domains, and peripheral mappings differ across packages, as detailed in Section 8.3 of the KM Family Data Sheet.
MKM14Z64ACHH5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 44-VFLGA Exposed Pad
- Series:
- Kinetis KM
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- DMA, WDT
- Number of I/O:
- 20
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 5x16b, 4x24b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MKM14Z64ACHH5 FAQ
1.How can I place an order for MKM14Z64ACHH5 through Aetrix?
Please submit a Request for Quotation (RFQ) for MKM14Z64ACHH5 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MKM14Z64ACHH5 reliable?
The price and inventory of MKM14Z64ACHH5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MKM14Z64ACHH5 is usually 5 days.
3.What payment methods are accepted for MKM14Z64ACHH5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MKM14Z64ACHH5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MKM14Z64ACHH5?
MKM14Z64ACHH5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MKM14Z64ACHH5 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MKM14Z64ACHH5?
For technical support, including MKM14Z64ACHH5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MKM14Z64ACHH5 requirements.
6.How does Aetrix verify that MKM14Z64ACHH5 is sourced from the original manufacturer or authorized distributors?
All MKM14Z64ACHH5 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MKM14Z64ACHH5 meets industry standards.
7.What is the process for return or replacement of MKM14Z64ACHH5?
All MKM14Z64ACHH5 units undergo pre-shipment inspection (PSI). If there is an issue with MKM14Z64ACHH5, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MKM14Z64ACHH5 part is unused and in its original packaging.
Return procedure for MKM14Z64ACHH5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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