NXP Semiconductors MKM33Z64CLL5

Overview

MKM33Z64CLL5 from NXP Semiconductors (formerly Freescale) is a 50 MHz ARM Cortex-M0+ microcontroller optimized for smart metering with integrated analog front end (AFE), segment LCD controller, and low-power operation. It features 64 KB flash, 16 KB RAM, 16-bit SAR ADC, 24-bit sigma-delta AFE with PGA up to 32× gain, and operates from 1.71–3.6 V (AFE inactive) or 2.7–3.6 V (AFE active) across –40°C to +85°C ambient.

For engineers reviewing the MKM33Z64CLL5 datasheet, MKM33Z64CLL5 pinout, MKM33Z64CLL5 application, or MKM33Z64CLL5 equivalent, key selection considerations include its dual ADC architecture (SAR + sigma-delta), LCD support (36×8 or 40×4), low-leakage stop modes down to 0.35 µA (VLLS0, POR disabled), and dual SPI/I²C/UART interfaces with ISO7816 and IrDA capability.

Technical Context

The MKM33Z64CLL5 implements a multi-clock architecture with independent 1–32 MHz and 32 kHz crystal oscillators, plus a multi-purpose clock generator supporting flexible clock routing. Its memory protection unit enforces multi-master access control, while the 4-channel DMA handles up to 64 request sources without CPU intervention.

System-level power management includes five low-power modes (VLPR, VLPS, STOP, VLLS0–VLLS3), with VLLS0 consuming just 0.35 µA at 3.0 V (POR disabled) and retaining RTC calendar functionality via iRTC battery supply (1.71–3.6 V). The hardware CRC module and true random-number generator support secure firmware updates and tamper detection in utility metering applications.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, PP = LL per part number decoding).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar metering microcontroller applications.

Compared with MKM33Z64CLL5, MKM33Z128CLL5 offers seamless flash scalability within the same footprint and feature set, while MKE15Z64VLL5 trades integrated metrology capability for broader general-purpose flexibility - making MKM33Z64CLL5 the optimal choice for cost-sensitive, space-constrained utility meter designs requiring full AFE+LCD integration.

Availability

MKM33Z64CLL5 is available at Aetrix Electronics and suitable for smart metering, industrial panel instrumentation, and battery-powered energy monitoring systems requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for MKM33Z64CLL5 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 heritage in microcontrollers from its acquisition of Freescale Semiconductor.

The KM Family, including MKM33Z64CLL5, was designed specifically for utility metering applications - integrating high-precision analog front ends, ultra-low-power operation, and LCD drivers to replace multi-chip metering solutions with a single, certified SoC.

FAQ

What is the maximum operating frequency of the MKM33Z64CLL5 core?

The MKM33Z64CLL5 features an ARM Cortex-M0+ core rated for up to 50 MHz operation. This frequency is supported across the full –40°C to +85°C ambient temperature range and 1.71–3.6 V supply voltage (when AFE is inactive) or 2.7–3.6 V (when AFE is active). The MKM33Z64CLL5 achieves 0.95 Dhrystone MIPS per MHz, enabling efficient execution of metrology algorithms and communication stacks.

Does the MKM33Z64CLL5 support both SAR and sigma-delta ADCs simultaneously?

Yes, the MKM33Z64CLL5 integrates two independent analog subsystems: a 16-bit successive approximation register (SAR) ADC and a 24-bit sigma-delta AFE with programmable gain amplifier (PGA). Both can operate concurrently - for example, the SAR ADC captures fast transients (e.g., surge events) while the sigma-delta AFE performs high-resolution metrology sampling. The MKM33Z64CLL5's Peripheral Crossbar allows hardware-triggered synchronization between them without CPU overhead.

What LCD configurations does the MKM33Z64CLL5 support?

The MKM33Z64CLL5's integrated segment LCD controller supports two configurations: 36 frontplanes × 8 backplanes (288 segments) or 40 frontplanes × 4 backplanes (160 segments). It includes automatic blinking, contrast control, and software-selectable duty cycle and inverse mode. This eliminates the need for external LCD drivers in applications like smart electricity meters, gas meters, and industrial panel displays - all managed directly by the MKM33Z64CLL5.

What is the lowest power consumption mode available on the MKM33Z64CLL5?

The MKM33Z64CLL5 achieves its lowest active-retention current in Very Low-Leakage Stop Mode 0 (VLLS0) with POR circuit disabled: 0.35 µA at 3.0 V and 25°C. In this mode, the iRTC remains functional using VBAT supply, preserving calendar time and alarms. The MKM33Z64CLL5 also supports VLLS1 (0.89 µA), VLLS2 (1.24 µA), and VLLS3 (1.98 µA), each offering progressively more peripheral retention at higher current.

Is the MKM33Z64CLL5 pin-compatible with other KM Family devices?

The MKM33Z64CLL5 uses a 100-pin LQFP package (PP = LL), and shares identical pinout with other LL-package KM Family members including MKM33Z128CLL5, MKM34Z128CLL5, and MKM38Z128CLL5. This enables direct hardware reuse across flash variants and feature subsets. However, it is not pin-compatible with HH- or LH-package variants (e.g., MKM33Z64CLH5), which use different pin counts and layouts - always verify package identifier (LL vs. LH vs. HH) when substituting.