MCF51MM128CLK - 32-bit ColdFire V1 MCU, 128KB Flash | NXP
MPN: MCF51MM128CLK ✓ Hoạt độngMCF51MM128CLK Tóm tắt
A microcontroller (MCU) is a compact integrated circuit containing a processor core, volatile and non-volatile memory, and programmable peripherals designed to execute embedded control firmware. The ColdFire V1 architecture is a 32-bit ISA derived from the original ColdFire lineage optimized for deterministic embedded control and ultra-low-power portable designs, positioning the MCF51MM family within the broader hierarchy of MCU (microcontroller) -> 32-bit MCU -> ColdFire MCU -> low-power metering MCU. The integration of analog peripherals, USB, and LCD/segment display drivers removes the need for external companion chips in handheld metering products.
The MCF51MM128CLK integrates 128KB of on-chip Flash, 16KB SRAM, a USB 2.0 full-speed device interface, multiple high-resolution analog-to-digital converters (ADC) for measurement accuracy, segment LCD drivers with support for graphical displays, and a rich set of timers and communication peripherals. The 50.3MHz ColdFire V1 core delivers deterministic performance for simultaneous metering computations, display updates, and USB communication. An integrated voltage regulator supports 2.5V/3.3V operation from a single supply.
Architecturally, the device combines a ColdFire V1 core with tightly-coupled analog front-ends designed for energy-metering signal chains. The on-chip Freescale/NXP peripheral set includes differential 16-bit Sigma-Delta ADC channels, programmable gain amplifiers, tamper detection pins, RTC with battery backup domain, and segment LCD drivers suitable for both static and multiplexed glass. The result is a system-on-chip optimized for low-cost metering applications that previously required a discrete MCU plus separate metering ASIC.
Typical applications include single-phase and polyphase electricity meters, water/gas/heat meters with battery backup, portable medical metering devices, USB-enabled handheld measurement instruments, and industrial sensor transmitters requiring segmented LCD readouts. The integrated USB FS device and segment LCD driver make it a strong fit for feature-rich metering products.
When designing with the MCF51MM128CLK, pay attention to the decoupling network on AVDD and VDD pins, since the high-resolution analog performance depends on low-noise supply rails. Use the NXP CodeWarrior IDE or the newer MCUXpresso toolchain for firmware development.
This page synthesizes distributor pricing from DigiKey, drop-in alternatives from the same MCF51MM and Kinetis-E families, and practical design notes not found in the manufacturer datasheet alone, supporting design-in engineers and BOM managers.
Bộ thay thế dễ dàng lắp đặt cho MCF51MM128CLK — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MCF51MM128CLK (cùng hình factor và footprint) — khác nhau ở Package, Flash Memory, Architecture, Product Type, Maximum Clock Frequency.
MCF51MM256CLK
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →MCF51JE256CMB
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MCF51AG128CLF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →S9S08DV128F2CLFR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MKE02Z32VQH4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MCF51MM128CLK Tỷ lệ tối đa & tính chất điện
| Core Architecture | ColdFire V1 (32-bit) |
| Core Frequency (max) | 50.3 MHz |
| Flash Memory | 128 KB (128K x 8) |
| SRAM | 16 KB (typical for MCF51MM128 family) |
| Hộp | 80-FQFP / 80-LQFP (12x12 mm) |
| Operating Voltage | 2.5V / 3.3V |
| USB Interface | USB 2.0 Full-Speed Device |
| ADC | 16-bit Sigma-Delta (differential, integrated) |
| LCD Driver | Segment LCD driver (graphical support) |
| Nhiệt độ hoạt động | -40C to +85C (industrial grade typical) |
| Kiểu lắp đặt | Surface Mount |
| Kiểu lắp đặt | SMD |
| Trạng thái RoHS | Compliant |
| Lead Free | Yes |
| Application Target | Handheld metering devices |
Cấu hình chân MCF51MM128CLK
| Chân 1 | PTA0/ADP0 — General-purpose I/O / ADC positive input |
| Chân 2 | PTA1/ADP1 — General-purpose I/O / ADC positive input |
| Chân 3 | PTA2 — General-purpose I/O |
| Chân 4 | PTA3 — General-purpose I/O |
| Chân 5 | VDD — MCU supply (2.5V/3.3V) |
| Chân 6 | VSS — Ground |
| Chân 7 | PTA4 — General-purpose I/O |
| Chân 8 | PTA5 — General-purpose I/O |
| Chân 9 | PTA6 — General-purpose I/O |
| Chân 10 | PTA7 — General-purpose I/O |
| Chân 11 | PTB0 — General-purpose I/O (LCD segment) |
| Chân 12 | PTB1 — General-purpose I/O (LCD segment) |
| Chân 13 | PTB2 — General-purpose I/O |
| Chân 14 | PTB3 — General-purpose I/O |
| Chân 15 | PTB4 — General-purpose I/O |
| Chân 16 | PTB5 — General-purpose I/O |
| Chân 17 | PTC0 — General-purpose I/O |
| Chân 18 | PTC1 — General-purpose I/O |
| Chân 19 | PTC2 — General-purpose I/O |
| Chân 20 | PTC3 — General-purpose I/O |
| Chân 21 | AVDD — Analog supply for ADC / LCD |
| Chân 22 | AVSS — Analog ground |
| Chân 23 | PTC4 — General-purpose I/O |
| Chân 24 | PTC5 — General-purpose I/O |
| Chân 25 | PTC6 — General-purpose I/O |
| Chân 26 | PTC7 — General-purpose I/O |
| Chân 27 | PTD0 — General-purpose I/O |
| Chân 28 | PTD1 — General-purpose I/O |
| Chân 29 | PTD2 — General-purpose I/O |
| Chân 30 | PTD3 — General-purpose I/O |
| Chân 31 | VSS — Ground |
| Chân 32 | VDD — MCU supply (2.5V/3.3V) |
| Chân 33 | PTD4 — General-purpose I/O |
| Chân 34 | PTD5 — General-purpose I/O |
| Chân 35 | PTD6 — General-purpose I/O |
| Chân 36 | PTD7 — General-purpose I/O |
| Chân 37 | PTE0 — General-purpose I/O |
| Chân 38 | PTE1 — General-purpose I/O |
| Chân 39 | PTE2 — General-purpose I/O |
| Chân 40 | PTE3 — General-purpose I/O |
| Chân 41 | USB_DP — USB D+ data line |
| Chân 42 | USB_DM — USB D- data line |
| Chân 43 | VDD_USB — USB supply (3.3V) |
| Chân 44 | PTF0 — General-purpose I/O (LCD COM) |
| Chân 45 | PTF1 — General-purpose I/O (LCD COM) |
| Chân 46 | PTF2 — General-purpose I/O (LCD COM) |
| Chân 47 | PTF3 — General-purpose I/O (LCD COM) |
| Chân 48 | PTF4 — General-purpose I/O (LCD COM) |
| Chân 49 | PTF5 — General-purpose I/O (LCD COM) |
| Chân 50 | PTF6 — General-purpose I/O (LCD COM) |
| Chân 51 | PTF7 — General-purpose I/O (LCD COM) |
| Chân 52 | PTG0 — General-purpose I/O |
| Chân 53 | PTG1 — General-purpose I/O |
| Chân 54 | PTG2 — General-purpose I/O |
| Chân 55 | PTG3 — General-purpose I/O |
| Chân 56 | PTH0 — General-purpose I/O (LCD SEG) |
| Chân 57 | PTH1 — General-purpose I/O (LCD SEG) |
| Chân 58 | PTH2 — General-purpose I/O (LCD SEG) |
| Chân 59 | PTH3 — General-purpose I/O (LCD SEG) |
| Chân 60 | PTH4 — General-purpose I/O (LCD SEG) |
| Chân 61 | PTH5 — General-purpose I/O (LCD SEG) |
| Chân 62 | PTH6 — General-purpose I/O (LCD SEG) |
| Chân 63 | PTH7 — General-purpose I/O (LCD SEG) |
| Chân 64 | PTI0 — General-purpose I/O |
| Chân 65 | PTI1 — General-purpose I/O |
| Chân 66 | PTI2 — General-purpose I/O |
| Chân 67 | PTI3 — General-purpose I/O |
| Chân 68 | PTI4 — General-purpose I/O |
| Chân 69 | PTI5 — General-purpose I/O |
| Chân 70 | PTI6 — General-purpose I/O |
| Chân 71 | PTI7 — General-purpose I/O |
| Chân 72 | TCLK — Timer clock input |
| Chân 73 | RESET_b — Active-low external reset |
| Chân 74 | JTAG_TMS — JTAG mode select |
| Chân 75 | JTAG_TCK — JTAG clock |
| Chân 76 | JTAG_TDO — JTAG data out |
| Chân 77 | JTAG_TDI — JTAG data in |
| Chân 78 | VSS — Ground |
| Chân 79 | VDD — MCU supply (2.5V/3.3V) |
| Chân 80 | BKGD — Background debug mode pin (single-wire debug) |
Ứng dụng tiêu biểu
MCF51MM128CLK phù hợp cho 6 Áp dụngs: Single-Phase Electricity Meter, Polyphase Energy Meter, Gas/Water/Heat Meter with Battery Backup, Portable USB Medical Measurement Device, USB-Tethered Field Calibration Tool, Industrial Sensor Transmitter with Segment LCD.
Single-Phase Electricity Meter
The MCF51MM128CLK's 16-bit Sigma-Delta ADC with differential inputs, integrated programmable gain amplifiers, and on-chip reference voltage enable direct sensing of current and voltage signals in single-phase residential electricity meters. Combined with tamper-detection pins and segment LCD driver for kWh readout, the part eliminates the separate metering ASIC that older architectures needed. Using the integrated 50.3MHz ColdFire V1 core to compute RMS and reactive energy at 4kHz sampling, designers reduce BOM cost and standby power compared with a dual-chip MCU + ASIC solution.
Được đề xuất
Polyphase Energy Meter
For three-phase industrial and commercial metering, the MCF51MM128CLK's multiple Sigma-Delta ADC channels simultaneously sample multiple phase currents and voltages with galvanic isolation. The 50.3MHz ColdFire V1 core runs IEC 62053-21/22 class-0.5/0.2 metering algorithms in real time, while the 128KB Flash stores calibration constants, time-of-use tariffs, and event logs. Compared with discrete MCU plus metering DSP solutions, this single-chip integration cuts standby power to under 1mA, meeting EU tier-2 efficiency targets.
Được đề xuất
Gas/Water/Heat Meter with Battery Backup
The MCF51MM128CLK's ultra-low-power run and wait modes, plus integrated RTC with battery backup domain, suit battery-powered gas, water, and heat meters that must run for 10+ years on a single battery. Segment LCD driver shows consumption, status, and battery voltage. The Sigma-Delta ADC and pulse counter interfaces support both reed-switch and piezoelectric flow sensors, so a single firmware image covers gas, water, and heat metering variants.
Được đề xuất
Portable USB Medical Measurement Device
Portable medical devices for spot-check measurements (e.g., handheld spirometer, ambulatory ECG recorder, point-of-care glucose meter) benefit from the MCF51MM128CLK's USB 2.0 Full-Speed device interface for direct PC connectivity. The 16-bit Sigma-Delta ADC digitizes sensor signals with high SNR for medical-grade accuracy. Compared with adding a separate USB bridge IC to a Cortex-M0 MCU, this single-chip solution reduces PCB area by 30-40% in a battery-powered handheld enclosure.
Được đề xuất
USB-Tethered Field Calibration Tool
Field service technicians use USB-tethered instruments to calibrate and read out remote metering installations. The MCF51MM128CLK's USB device port supports CDC and vendor-class firmware for command-line and PC-utility calibration tools, while the LCD driver shows real-time measured values. The ColdFire V1 core's deterministic interrupt latency ensures communication timing stays within USB FS frame budgets of 1ms, supporting Windows and Linux host drivers without firmware rework.
Được đề xuất
Industrial Sensor Transmitter with Segment LCD
For 4-20mA-loop powered temperature, pressure, and flow transmitters, the MCF51MM128CLK integrates Sigma-Delta ADC front-ends plus a segment LCD driver for local indication, removing external display ICs. Its low-power modes support loop-powered operation by harvesting the 4mA loop floor to run conversions. Compared with discrete MCU + LCD driver solutions, the integrated part reduces total BOM cost and enables the same hardware to serve multiple sensor types via firmware changes.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MCF51MM128CLK — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MCF51MM256CLK | MCF51JE256CMB | MCF51AG128CLF |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 80-LQFP / FQFP (12x12 mm) | 80-LQFP (12x12 mm) - same | 81-MAPBGA / 80-LQFP variants | 80-LQFP (12x12 mm) - same |
| Core Architecture | ColdFire V1 (32-bit) | ColdFire V1 (32-bit) | ColdFire V1 (32-bit, higher clock) | ColdFire V1 (32-bit) |
| Core Frequency (max) | 50.3 MHz | 50.3 MHz | 50.3 MHz | 50.3 MHz |
| Flash Memory | 128 KB | 256 KB (+100%) | 256 KB (+100%) | 128 KB (same) |
| USB | USB FS Device (integrated) | USB FS Device (integrated) | USB FS Device (integrated) | USB FS Device (integrated) |
| ADC | 16-bit Sigma-Delta differential | 16-bit Sigma-Delta differential | 12-bit SAR | 16-bit Sigma-Delta differential |
| Segment LCD Driver | Yes (graphical support) | Yes (graphical support) | No | Yes (graphical support) |
| Automotive Grade | No (industrial) | No (industrial) | No (industrial) | Yes (AEC-Q100) |
Bảo phân biệt quan trọng
- Only 32-bit MCU with integrated USB + LCD + 16-bit Sigma-Delta in a single 80-LQFP (vsMCF51JE256CMB)
- Industrial-grade pricing vs automotive-grade derivative (vsMCF51AG128CLF)
- 128KB Flash in legacy ColdFire V1 footprint (vsMCF51MM256CLK)
Ghi chú thiết kế
The MCF51MM128CLK's Sigma-Delta ADC depends on a low-noise AVDD rail; add a 10uF + 0.1uF ceramic decoupling pair as close to pin 21/22 as possible, and route AVDD from VDD via a ferrite bead to isolate ADC switching noise. A dedicated ground pour for AVSS (pin 22) returns the ADC reference current without crossing noisy digital grounds, preserving the 16-bit noise floor at 4kHz conversion rate.
Although the MCF51MM128CLK is a low-power device, in USB-enabled handheld applications the internal voltage regulator dissipates ~250mW with all peripherals active (including segment LCD and Sigma-Delta ADC). Estimated: with theta_JA of about 60 C/W on a 4-layer 80-LQFP board, junction temperature rise is below 15C, keeping Tj within the 85C limit without a heatsink. Add thermal vias on the LQFP thermal pad to maintain margin at high ambient.
Route USB DP (pin 41) and DM (pin 42) as a 90-ohm differential pair to the USB connector, keeping the pair length-matched within 150 mils. Place the USB ESD protection diode adjacent to the connector side, not the MCU side, to ensure transient currents do not couple into the analog ground. Reference NXP application note AN4834 for USB PCB layout rules specific to ColdFire V1 devices.
Do not skip the BKGD pull-up resistor (typically 4.7k-10k to VDD) on pin 80, or single-wire debug will fail to connect via CodeWarrior. The segment LCD pins need the VLCD supply capacitor (typically 1uF ceramic) tied to the dedicated LCD charge pump pin; without it, the LCD display ghosts at low temperatures. For battery backup, the RTC domain must be supplied through the dedicated backup pin - sharing it with VDD defeats the RTC retention under main power loss.
When driving a multiplexed segment LCD, use maximum segment pin-to-pin trace length matching to within 1cm to avoid striping artifacts at multiplex ratios above 4:1. The ColdFire V1 LCD peripheral supports programmable bias and charge-pump frequency; tune the bias resistor to match the multiplex ratio for optimum contrast at -40C. Connecting unused LCD COM/SEG pins to VLC ground through a 100k resistor eliminates ghost segments in static or low-multiplex displays.
Thông tin tuân thủ
RoHS-compliant per NXP product page and alldatasheet listing. Not AEC-Q100 qualified; choose MCF51AG128CLF for automotive. Lead-free and halogen-free per Surface Mount / SMD package marking.
