NXP Semiconductors MMC2001HCAB33B

Overview

MMC2001HCAB33B from Freescale Semiconductor is a 32-bit M•CORE™ RISC microcontroller with integrated 256 KB ROM, 32 KB battery-backed SRAM, dual UARTs, six PWM channels, ISPI, and real-time TOD timer - designed for ultra-low-power embedded control in battery-operated devices operating at 33 MHz and 1.8–3.6 V.

For engineers reviewing the MMC2001HCAB33B datasheet, MMC2001HCAB33B pinout, MMC2001HCAB33B application, or MMC2001HCAB33B equivalent, key selection considerations include its 144-pin LQFP package, on-chip OnCE™ debug support, low-voltage reset detection, interval-mode SPI, and dual asynchronous serial interfaces with IrDA compatibility.

Technical Context

The MMC2001HCAB33B implements a four-stage pipelined 32-bit M•CORE CPU with 16-bit instruction encoding, enabling single-cycle execution for most instructions and reduced memory bandwidth. It integrates dedicated hardware for floating-point routines (via ROM), MBUG™ monitor, and branch prediction logic to minimize pipeline bubbles on taken branches.

Its clock architecture supports dual reference sources: HI_REFCLK (external 33 MHz input via CLKIN) and LOW_REFCLK (32.768 kHz crystal-driven oscillator), with independent peripheral clock gating and four power modes (RUN/WAIT/DOZE/STOP). The TOD timer runs continuously in all low-power states, enabling wake-up from STOP mode via alarm interrupt.

Key Specifications

Pinout & Package

MMC2001HCAB33B is housed in a 144-pin Plastic Low-Profile Quad Flat Pack (LQFP), measuring 20 mm × 20 mm with 0.5 mm pitch. Pin 12 (MODE) must be grounded for proper operation but is not a system ground.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9328MX1 and MMC2100HCAB33B, the MMC2001HCAB33B delivers uniquely optimized ultra-low-power operation with integrated RTC, battery-backed RAM, and ROM-resident firmware - making it irreplaceable for cost-sensitive, battery-constrained embedded systems where deterministic wake-up and minimal BOM count are critical.

Availability

MMC2001HCAB33B is available at Aetrix Electronics and suitable for portable medical monitors, industrial sensor nodes, smart energy meters, and motor control interfaces requiring stable component supply and long-term lifecycle support.

Supply support for MMC2001HCAB33B 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

Freescale Semiconductor (now part of NXP) was a leading designer of embedded processors, analog, and mixed-signal ICs for automotive, industrial, and consumer applications.

The MMC2001HCAB33B belongs to the M•CORE™ family - a line of ultra-low-power 32-bit RISC microcontrollers engineered specifically for battery-operated, cost-sensitive embedded control systems demanding high code density and deterministic real-time behavior.

FAQ

What is the maximum operating frequency of the MMC2001HCAB33B?

The MMC2001HCAB33B operates at a maximum frequency of 33 MHz, achieved via the external CLKIN pin. This speed is guaranteed under specified 1.8–3.6 V supply and ambient temperature conditions. The internal HI_REFCLK domain runs synchronously with this input, enabling deterministic timing for CPU execution and high-speed peripherals like the external interface module.

Does the MMC2001HCAB33B support battery-backed SRAM retention?

Yes, the MMC2001HCAB33B includes 32 KB of on-chip SRAM with dedicated VSTBY and VBATT pins to maintain data during main power loss. When backup voltage is applied, SRAM contents remain intact - essential for preserving real-time clock state, calibration data, or unsent telemetry in portable devices. The MMC2001HCAB33B's TOD timer continues running independently in all low-power modes.

How does the Interval-Mode SPI (ISPI) function in the MMC2001HCAB33B?

The ISPI in the MMC2001HCAB33B supports automatic, periodic data transfers without CPU intervention - configured via interval registers to trigger SPI exchanges at fixed time intervals. This feature offloads sensor polling or display refresh tasks from firmware, reducing active CPU time and power consumption. The MMC2001HCAB33B's ISPI operates in master, slave, or interval mode, with full interrupt support for completion and error handling.

What debug capabilities does the MMC2001HCAB33B provide?

The MMC2001HCAB33B integrates the OnCE™ (On-Chip Emulation) module with JTAG interface (TMS, TDI, TCK, TRST_B, TDO), enabling non-intrusive debugging: real-time register and memory inspection, hardware breakpoints, single-step trace, and controlled execution of downloaded code. This eliminates the need for external emulators and allows full visibility into MMC2001HCAB33B operation during development and field validation.

Can the MMC2001HCAB33B operate from a single 3.3 V supply?

Yes, the MMC2001HCAB33B supports 3.3 V operation across its full 1.8–3.6 V range. At 3.3 V, it delivers full 33 MHz performance with guaranteed timing margins. Its separate CVDD, DVDD, QVCC, and AVDD rails allow clean power partitioning - critical for noise-sensitive analog peripherals and stable digital operation. The MMC2001HCAB33B's low-voltage reset circuitry remains fully functional at 3.3 V to ensure robust startup and brown-out recovery.