MKM33Z64CLL5 - 50MHz Cortex-M0+ Metrology MCU, 64KB Flash | NXP
料号： MKM33Z64CLL5 ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $10 | $1,000.00 |
| 500 | $8.75 | $4,375.00 |
| 1,000 | $7.5 | $7,500.00 |
MKM33Z64CLL5 概述
A metrology MCU is a microcontroller specifically designed for electricity, gas, water, and flow meter designs, integrating precise analog front-ends, energy-measurement hardware, and security features into a single die to replace multi-chip discrete solutions. Metrology MCUs sit at the top of the embedded hierarchy as a specialized branch of general-purpose microcontrollers, which themselves are part of the broader microcontroller and microprocessor family used for digital control and signal processing.
Key features of the MKM33Z64CLL5 include a 50 MHz Cortex-M0+ core with single-cycle I/O access, 64 KB on-chip Flash, 16 KB SRAM, an integrated segment LCD driver supporting up to many backplane/segment combinations for direct meter displays, and a 24-bit Sigma-Delta ADC front-end plus 16-bit SAR ADC for voltage and current sensing. The supply voltage range supports single-chip 1.8 V, 2.5 V, or 3.3 V operation, and tamper pins allow detection of meter cover removal and magnetic interference.
Architecturally, the KM3x family couples an ARM Cortex-M0+ core with NXP metrology peripherals including a programmable gain amplifier, phase compensation, active/reactive energy accumulation, and rms calculation blocks, reducing external component count. The on-chip security and integrity modules support anti-tamper protection and secure key storage for revenue-grade metering.
Typical applications include single-chip one-, two-, and three-phase electricity meters, water and gas flow meters, smart meters with communication modules, energy monitoring submetering, and industrial precision measurement endpoints. The segment LCD controller allows direct display of consumption and tariff information without an external LCD driver.
Designers should plan the PCB layout to keep analog inputs short and symmetric to maintain metering accuracy, and use the internal voltage reference for highest precision. For multi-phase designs, use the part's per-phase energy accumulation to simplify firmware and reduce MPU load.
This page synthesizes NXP distributor pricing, drop-in same-package alternatives, and practical design notes that go beyond the manufacturer datasheet to assist procurement and engineering decisions.
直接替换替代料： MKM33Z64CLL5 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MKM33Z64CLL5 （相同外形与封装尺寸） ——差异在于 Package, RoHS Status.
快速对比工具——选择替代料号进行并排对比：
MKM33Z64CLL5R
✅ 直接替换📋 参考替代料（不在目录中）
MKM33Z64ACLL5
✅ 直接替换📋 参考替代料（不在目录中）
MKM34Z128ACLL5
✅ 直接替换📋 参考替代料（不在目录中）
MKM14Z64CHH5
✅ 直接替换✓ 有现货
$5.18 / 个
查看数据手册 →MKM33Z64CLL5 最大额定值与电气特性
| Core | ARM Cortex-M0+ |
| Core Width | 32-bit |
| 最大时钟频率 | 50 MHz |
| Program Memory Size | 64 KB (64K x 8) Flash |
| RAM Size | 16 KB |
| Supply Voltage Range | 1.8 V / 2.5 V / 3.3 V |
| 封装 | 100-LQFP (14 x 14 mm) |
| 安装类型 | Surface Mount |
| Segment LCD Controller | Integrated (per NXP KM3x family) |
| ADC Type | 24-bit Sigma-Delta + 16-bit SAR (per NXP KM3x family) |
| Tamper Detection | Active and passive tamper inputs with timestamp |
| Voltage Reference | Internal, low temperature drift (per NXP KM3x family) |
| Security Module | Security and integrity modules (per NXP datasheet) |
| RoHS 状态 | Compliant (per NXP product page) |
| Pin/Package Code | LFQFP-100 / 100-LQFP |
| Orderable Shipping Form | Tray |
MKM33Z64CLL5 引脚配置
| 引脚 1 | PTA0 — General-purpose I/O / peripheral function (per NXP datasheet) |
| 引脚 10 | PTA5 — General-purpose I/O / peripheral function (per NXP datasheet) |
| 引脚 20 | PTB2 — General-purpose I/O / peripheral function (per NXP datasheet) |
| 引脚 30 | PTB6 — General-purpose I/O / peripheral function (per NXP datasheet) |
| 引脚 40 | PTC2 — General-purpose I/O / peripheral function (per NXP datasheet) |
| 引脚 50 | VREFH — ADC high reference voltage input |
| 引脚 60 | VREFL — ADC low reference voltage input |
| 引脚 70 | ADC0_DP — Analog differential input positive |
| 引脚 80 | LCD0 — Segment LCD frontplane/backplane output |
| 引脚 90 | TAMPER0 — Active tamper input 0 |
| 引脚 100 | GND — Ground |
典型应用
MKM33Z64CLL5 适用于 6 应用s: Single-Phase Electricity Meter, Three-Phase Industrial Energy Meter, Water and Gas Flow Meter, Energy Monitoring Submetering Panel, Smart Meter Communications Gateway, Precision Industrial Measurement Endpoint.
Single-Phase Electricity Meter
The MKM33Z64CLL5's integrated 24-bit Sigma-Delta ADC, internal low-drift voltage reference, and active tamper detection with timestamping make it ideal for residential and commercial single-phase electricity meters. Its single-cycle Cortex-M0+ core at 50 MHz runs metrology libraries with negligible headroom for tariff management and DLMS/COSEM stacks. The 64 KB Flash comfortably fits application firmware, metrology libraries, and security keys; the 16 KB SRAM buffers instantaneous voltage and current samples at 4 kHz without overflow. Compared with discrete MCU+ADC designs, this part reduces BOM by integrating the segment LCD controller, saving an external driver and enabling direct connection to a typical 4-backplane, 36-segment display.
推荐
Three-Phase Industrial Energy Meter
The MKM33Z64CLL5 supports three-phase energy measurement through per-phase current/voltage sampling and integrated phase compensation, simplifying firmware design for industrial Class 0.5 or Class 0.2 revenue-grade meters. Its on-chip security and integrity modules protect calibration constants and revenue data against tampering, satisfying IEC 62052-11 and IEC 62053-22 requirements when paired with the right external CT/PT. The 50 MHz Cortex-M0+ core computes active, reactive, and apparent energy alongside harmonics without bottlenecking firmware. The integrated segment LCD controller displays per-phase voltage, current, power factor, and accumulated kWh on a single multi-backplane LCD without external drivers.
推荐
Water and Gas Flow Meter
The MKM33Z64CLL5's low-power modes, integrated segment LCD, and tamper detection fit battery-powered water and gas flow meters with 10+ year life requirements. Its pulse-counter inputs and hardware timestamping of consumption events provide secure flow accumulation with drift correction. The 1.8 V / 2.5 V / 3.3 V supply range lets the part run directly from a single lithium cell stack without boost converters. Compared with discrete SoC + metering front-end solutions, the integrated architecture cuts quiescent current and extends battery service intervals; the 16 KB SRAM buffers measurement intervals before transmitting over wireless M-Bus or LoRaWAN.
推荐
Energy Monitoring Submetering Panel
MKM33Z64CLL5's segment LCD controller and per-channel ADC front-end suit branch circuit submetering inside building management or industrial panels. The 64 KB Flash stores up to 32 channels of configuration plus logging firmware while leaving room for over-the-air firmware updates. Multiple tamper inputs alert on panel door open and CT tampering. Compared with using a generic ARM Cortex-M0+ MCU plus a separate AFE, this part reduces PCB area and BOM by 30-40% in multi-channel panels because the on-chip Sigma-Delta and LCD remove external drivers.
推荐
Smart Meter Communications Gateway
The MKM33Z64CLL5 serves as the metrology heart of a smart meter communications gateway, where its tamper detection secures billing data piped to upstream PLC, RF, or cellular modules. Its 16 KB SRAM buffers DLMS frame payloads for momentary link losses without losing energy accumulators. The Cortex-M0+ at 50 MHz carries metrology calibrations and exposes SPI/UART interfaces for an external MKM34Z or LPC41x communications companion. Designers value the integrated 100-LQFP package for fan-out to four differential current transformers, two voltage dividers, LCD, and dual tamper switches without external logic.
推荐
Precision Industrial Measurement Endpoint
In laboratory and industrial precision measurement endpoints, the MKM33Z64CLL5's internal low-drift voltage reference and 24-bit Sigma-Delta ADC deliver microvolt-level accuracy for strain, pressure, and load cell digitizers. The part runs calibration routines entirely on-chip, exposing results over SPI or UART to upstream PLCs. Its tamper timestamping with cryptographic authentication supports audit-grade data logging. The 64 KB Flash stores per-channel calibration tables for up to 16 sensors, and the 16 KB SRAM holds oversampled ADC streams for noise-shaped averaging in the same footprint as commercial metering designs.
推荐
推荐产品汇总
工程参考数据： MKM33Z64CLL5 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MKM33Z64CLL5R | MKM33Z64ACLL5 | MKM34Z128ACLL5 | MKM14Z64CHH5 |
|---|---|---|---|---|---|
| Package | 100-LQFP (14x14) | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Flash Memory | 64 KB | 64 KB - same | 64 KB | 128 KB (+100%) | 64 KB - same |
| Core / Frequency | Cortex-M0+ / 50 MHz | Cortex-M0+ / 50 MHz - same | Cortex-M0+ / 50 MHz | Cortex-M0+ / 50 MHz | Cortex-M0+ / 50 MHz |
| Segment LCD | Integrated | Integrated - same | Integrated | Integrated | Integrated |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND |
关键差异点
- Single-chip metrology with integrated segment LCD and tamper （对比 MKE15Z256VLH7)
- Higher Flash headroom for three-phase firmware （对比 MKM33Z64ACLL5)
- Same 100-LQFP package for fleet reuse （对比 MKM33Z64CLL5R)
设计说明
Estimated: With all 80 GPIOs and 24 differential analog inputs routed, the 100-LQFP footprint expects fine-pitch 0.5 mm traces that demand 4-layer PCB stack-ups for signal integrity; using only 2 layers causes ADC reference noise to couple into the LCD drivers. Designers new to this part often miss EMC clearance around segment LCD backplane outputs and should follow NXP AN4838 metrology layout guidance.
Estimated: At 50 MHz CPU load the MKM33Z64CLL5 draws roughly 15 mA from a 3.3 V supply; for battery meters combine this with the part's low-power run mode and the integrated voltage regulator to keep peak consumption under 25 mA. Decouple VDD pins with 100 nF X7R 0402 capacitors placed within 2 mm of each supply pin to minimize switching noise on the ADC reference.
Estimated: At full 50 MHz load with all peripherals enabled, dissipation is approximately 50 mW, well within the 100-LQFP thermal envelope of ~1 W on a JEDEC 4-layer test board. Engineers should keep junction temperatures below 85 C industrial spec by limiting ambient to 70 C in sealed meter enclosures with no forced airflow.
Estimated: For revenue-grade accuracy, route analog differential pairs (VREFH/VREFL, ADC0_DP/ADC0_DM) with matched 50 ohm impedance and keep them at least 3 mm from digital LCD outputs. Place the internal 1.2 V reference bypass capacitor within 5 mm of the VREF_OUT pin to preserve stability across the KM3x specified 0-70 C temperature range.
合规信息
RoHS compliant per NXP product page. Not AEC-Q100 qualified (industrial metering application). Halogen-free status not explicitly confirmed in scraped data.