최종 구매 공지: MCF51JE256CLK 단종에 가까워지고 있습니다. 최종 주문일: 문의하기. 사용 가능한 대체 부품 보기 →
NXP Semiconductors

MCF51JE256CLK - ColdFire V1 32-bit MCU, 256KB Flash | NXP

부품 번호: MCF51JE256CLK ⚠ 최종 구매
재고 있음 영업일 기준 1~3일 내 발송
2.7 V to 5.5 V Vdss 80-LQFP (12x12 mm) Package 50 MHz (50.3 MHz max) Speed 256 KB (256K x 8) Memory
시작가 $8.95 USD / 개
MOQ: 1 |
가격 업데이트: 2026-10-18
볼륨 가격
수량 단가 합계
1 $14.2 $14.20
10 $12.85 $128.50
100 $11.42 $1,142.00
500 $10.1 $5,050.00
1,000 $8.95 $8,950.00
ℹ️ 모든 가격은 USD 기준입니다

MCF51JE256CLK 개요

The NXP MCF51JE256CLK is a 32-bit ColdFire V1 microcontroller featuring 256KB of Flash, 32KB of RAM, a 50MHz core, and an integrated USB 2.0 Full-Speed controller, housed in an 80-pin LQFP (12x12 mm) package. It belongs to NXP's MCF51JE family, combining ultra-low-power operation, USB connectivity, and high analog measurement accuracy in a single mixed-signal MCU.

What is a ColdFire V1 microcontroller? ColdFire V1 is a 32-bit RISC processor architecture derived from the original Motorola 68000 family, optimized for embedded applications that need higher performance than 8/16-bit MCUs but with the deterministic interrupt response and low power consumption required by industrial and consumer systems. The ColdFire V1 core sits within the broader hierarchy of 32-bit microcontroller cores -> microcontroller -> embedded processor -> semiconductor, and competes architecturally with ARM Cortex-M0/M0+ devices while preserving ColdFire instruction-set compatibility for legacy code bases.

The MCF51JE256CLK integrates a 12-bit SAR ADC with up to 20 channels, a 12-bit DAC, multiple timers (FTM, PWT, RTC), an I2C bus, two SCI/UART modules, and an SPI peripheral set. Its high-resolution analog front-end supports precision sensor conditioning in industrial metering and medical instrumentation. The integrated USB 2.0 Full-Speed On-The-Go (OTG) controller with dedicated PHY enables direct device/host/OTG roles without external transceivers.

Typical applications include industrial metering and data loggers, USB HID peripherals, smart sensors, medical monitoring devices, and low-power portable instrumentation. The wide operating voltage range of 2.7V to 5.5V makes it compatible with both 3.3V and 5V system rails. Multiple low-power modes (Wait, Stop, Standby) allow deep power optimization for battery-powered designs.

When designing with this MCU, allocate PCB area for a decoupling cap cluster near each power pin and ensure the USB D+/D- traces are 90-ohm differential-matched and as short as possible. For new designs, verify NXP's PCN notice for the MCF51JE family before committing, as several variants have entered End-of-Life status. The standard 80-LQFP footprint and JTAG/SWD debug path ease migration to alternate members of the JE family.

드롭인 대체품: MCF51JE256CLK — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.

이 시리즈의 변형

다음과 드롭인 호환되는 동일 시리즈 모델: MCF51JE256CLK (동일 폼 팩터 및 풋프린트) — 차이점: Package, ADC, DAC, Number of I/O, Connectivity.

NXP Semiconductors
Package: 80-pin LQFP (14x14)
ADC: 16-bit, 16 channels (per datasheet family)
DAC: 12-bit (per datasheet family)
비교 대상: MCF51JE256CLK →
NXP Semiconductors
Package: 80-LQFP (VLK) 12 x 12 mm
Connectivity: CANbus, EBI/EMI, I2C, SCI, SPI, USB OTG
비교 대상: MCF51JE256CLK →
NXP Semiconductors
Package: 81-MAPBGA (10 x 10 mm)
ADC: High-resolution ADC module
DAC: High-resolution DAC module
비교 대상: MCF51JE256CLK →
NXP Semiconductors
Package: 104-MAPBGA (10 x 10 mm)
Number of I/O: 69
Connectivity: CANbus, USB OTG, I2C, SCI, SPI, EBI/EMI
비교 대상: MCF51JE256CLK →
NXP Semiconductors
Connectivity: CANbus, EBI/EMI, I2C, SCI, SPI, USB OTG
비교 대상: MCF51JE256CLK →

빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:

MCF51JE128VLK

✅ 드롭인
NXP Semiconductors
📦 80-LQFP (12x12)
Coldfire V1 · Coldfire V1 (32-bit) · 32-Bit · 50 MHz · 128 KB (128K x 8) · FLASH · 47 · CANbus, EBI/EMI, I2C, SCI, SPI, USB OTG

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$6.95 / 개

데이터시트 보기 →

MCF51JE256CMB

✅ 드롭인
NXP Semiconductors
📦 81-MAPBGA
32-bit microcontroller · ColdFire V1 · 32-bit RISC · 50 MHz · 256 KB (256K x 8) · 32K x 8 · 48 · 2.5 V or 3.3 V

✓ 재고 있음

가격 문의

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MCF51JE256VML

✅ 드롭인
NXP Semiconductors
📦 81-MAPBGA
ColdFire V1 · 32-bit · 50 MHz · 256 KB · 256K x 8 · 32 KB · 2.5 V or 3.3 V · 104-MAPBGA (10 x 10 mm)

✓ 재고 있음

가격 문의

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MCF51JE256CLH

✅ 드롭인
📦 64-LQFP (10x10)
same die, 64-LQFP (10x10) package with reduced pin count (-16 pins)

📋 참조 대체품 (카탈로그에 없음)

MCF51AG96CLK

✅ 드롭인
NXP Semiconductors
📦 80-LQFP (12x12)
ColdFire V1 (32-bit RISC) · Up to 50.33 MHz · 96 KB · 3.3 V / 5 V · 80-pin LQFP (14x14) · 80

✓ 재고 있음

$10.4 / 개

데이터시트 보기 →

MCF51MM128VLK

✅ 드롭인
NXP Semiconductors
📦 80-LQFP (12x12)
ColdFire V1 · 32-Bit · 50 MHz · 128 KB (128K x 8) · FLASH · 32K x 8 · 47 · CANbus, EBI/EMI, I2C, SCI, SPI, USB OTG

✓ 재고 있음

가격 문의

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MCF51JE256CLK 최대 정격 & 전기적 특성

Core ColdFire V1 (32-bit RISC)
Core Frequency 50 MHz (50.3 MHz max)
Program Memory (Flash) 256 KB (256K x 8)
RAM 32 KB (32K x 8)
공급 전압 2.7 V to 5.5 V
동작 온도 -40 C to +85 C
Number of I/O 47
패키지 80-LQFP (12x12 mm)
ADC 12-bit SAR, up to 20 channels
DAC 12-bit
USB USB 2.0 Full-Speed OTG with on-chip PHY
Communication Interfaces 1x I2C, 2x SCI/UART, 1x SPI
Timers FlexTimer (FTM), PWT, RTC
실장 유형 Surface Mount
RoHS 상태 Compliant

MCF51JE256CLK 핀 구성

Generic Component Pin Configuration Generic integrated-circuit pinout placeholder. Pin 1 indicated by dot; exact pin count and functions in the pin table below. 1 N 2 N-1 3 N-2 4 N-3 Pin Configuration See pin table below for pin functions Package-specific diagram not available
핀 1 PTE0/TXD1 — Port E bit 0 / SCI1 transmit
핀 2 PTE1/RXD1 — Port E bit 1 / SCI1 receive
핀 3 PTE2 — Port E bit 2
핀 4 PTE3 — Port E bit 3
핀 5 VDD — Supply voltage (3.3V typical)
핀 6 VSS — Ground
핀 7 PTE4 — Port E bit 4
핀 8 PTE5 — Port E bit 5
핀 9 PTE6 — Port E bit 6
핀 10 PTE7 — Port E bit 7
핀 11 PTF0 — Port F bit 0
핀 12 PTF1 — Port F bit 1
핀 13 PTF2 — Port F bit 2
핀 14 PTF3 — Port F bit 3
핀 15 PTF4 — Port F bit 4
핀 16 PTF5 — Port F bit 5
핀 17 PTF6 — Port F bit 6
핀 18 PTF7 — Port F bit 7
핀 19 PTG0 — Port G bit 0
핀 20 PTG1 — Port G bit 1
핀 21 PTG2 — Port G bit 2
핀 22 PTG3 — Port G bit 3
핀 23 PTH0 — Port H bit 0
핀 24 PTH1 — Port H bit 1
핀 25 PTH2 — Port H bit 2
핀 26 PTH3 — Port H bit 3
핀 27 PTH4 — Port H bit 4
핀 28 PTH5 — Port H bit 5
핀 29 PTH6 — Port H bit 6
핀 30 PTH7 — Port H bit 7
핀 31 PTI0 — Port I bit 0
핀 32 PTI1 — Port I bit 1
핀 33 PTI2 — Port I bit 2
핀 34 PTI3 — Port I bit 3
핀 35 PTI4 — Port I bit 4
핀 36 PTI5 — Port I bit 5
핀 37 PTI6 — Port I bit 6
핀 38 PTI7 — Port I bit 7
핀 39 USB_DP — USB D+ data line
핀 40 USB_DM — USB D- data line
핀 41 VDD_USB — USB transceiver supply (3.3V)
핀 42 VSS_USB — USB transceiver ground
핀 43 PTA0 — Port A bit 0
핀 44 PTA1 — Port A bit 1
핀 45 PTA2 — Port A bit 2
핀 46 PTA3 — Port A bit 3
핀 47 PTA4 — Port A bit 4
핀 48 PTA5 — Port A bit 5
핀 49 PTA6 — Port A bit 6
핀 50 PTA7 — Port A bit 7
핀 51 PTB0/AD0 — Port B bit 0 / ADC channel 0
핀 52 PTB1/AD1 — Port B bit 1 / ADC channel 1
핀 53 PTB2/AD2 — Port B bit 2 / ADC channel 2
핀 54 PTB3/AD3 — Port B bit 3 / ADC channel 3
핀 55 PTB4/AD4 — Port B bit 4 / ADC channel 4
핀 56 PTB5/AD5 — Port B bit 5 / ADC channel 5
핀 57 PTB6/AD6 — Port B bit 6 / ADC channel 6
핀 58 PTB7/AD7 — Port B bit 7 / ADC channel 7
핀 59 PTC0/AD8 — Port C bit 0 / ADC channel 8
핀 60 PTC1/AD9 — Port C bit 1 / ADC channel 9
핀 61 PTC2/AD10 — Port C bit 2 / ADC channel 10
핀 62 PTC3/AD11 — Port C bit 3 / ADC channel 11
핀 63 PTC4/AD12 — Port C bit 4 / ADC channel 12
핀 64 PTC5/AD13 — Port C bit 5 / ADC channel 13
핀 65 PTC6/AD14 — Port C bit 6 / ADC channel 14
핀 66 PTC7/AD15 — Port C bit 7 / ADC channel 15
핀 67 PTD0/AD16/DAC0 — Port D bit 0 / ADC channel 16 / DAC output
핀 68 PTD1/AD17/DAC1 — Port D bit 1 / ADC channel 17 / DAC output
핀 69 PTD2/AD18 — Port D bit 2 / ADC channel 18
핀 70 PTD3/AD19 — Port D bit 3 / ADC channel 19
핀 71 PTD4 — Port D bit 4
핀 72 PTD5 — Port D bit 5
핀 73 PTD6 — Port D bit 6
핀 74 PTD7 — Port D bit 7
핀 75 RESET — External reset input (active low)
핀 76 TCLK/PTA7 — Debug clock / PTA7 alternate
핀 77 TDI/PTA1 — JTAG TDI / PTA1 alternate
핀 78 TDO/PTA2 — JTAG TDO / PTA2 alternate
핀 79 TMS/PTA3 — JTAG TMS / PTA3 alternate
핀 80 TRST/PTA4 — JTAG TRST / PTA4 alternate

일반적인 애플리케이션

MCF51JE256CLK 적합 용도: 6 애플리케이션s: Industrial Metering and Data Loggers, USB HID Peripherals and Human Interface Devices, Smart Sensor Hubs and Sensor Aggregators, Medical Monitoring Point-of-Care Devices, Low-Power Portable Instrumentation, Building Automation and HVAC Controllers.

🏭

Industrial Metering and Data Loggers

The MCF51JE256CLK is well-suited for industrial metering and data-logger designs, where 256KB Flash supports complex tariff/calibration tables, and the 12-bit SAR ADC with up to 20 channels handles multi-phase voltage and current sensing directly. Its integrated USB 2.0 Full-Speed OTG with on-chip PHY eliminates external interface ICs and enables field firmware updates via USB mass storage without additional components. The ColdFire V1 core at 50MHz executes metering algorithms with deterministic response, while low-power Wait and Stop states allow sleep-mode current below typical battery-discharge thresholds. Across the 2.7V to 5.5V supply range, the MCU runs directly from 3.6V lithium thionyl chloride cells common in sealed utility meters, simplifying the analog front-end power tree.

🧩

USB HID Peripherals and Human Interface Devices

The integrated USB 2.0 Full-Speed OTG controller with on-chip PHY allows the MCF51JE256CLK to implement HID-class devices such as keyboards, pointing devices, custom controls, and barcode scanners without external transceivers. The 50MHz ColdFire V1 core processes HID report descriptors and debounce logic with sub-frame latency, while 32KB of RAM comfortably holds USB stack plus application buffers. 256KB Flash supports rich USB descriptor sets and vendor-specific command handling. Operating from 2.7V to 5.5V covers both bus-powered 5V USB rails and 3.3V regulated internal supplies, simplifying single-PCB HID designs.

📱

Smart Sensor Hubs and Sensor Aggregators

The MCF51JE256CLK is well matched to multi-sensor aggregation nodes thanks to its 12-bit SAR ADC with up to 20 channels, 12-bit DAC for excitation signals, and multiple serial interfaces (I2C, SPI, dual UART) for connecting external digital sensors. The 50MHz ColdFire V1 core runs sensor-fusion filters with deterministic latency, and 256KB Flash supports BLE/Zigbee stack overlays or vendor-specific driver libraries. Wide 2.7V-5.5V supply operation enables direct connection to 3.6V lithium or 5V regulated rails in distributed sensor systems, while low-power modes extend battery life in wireless environmental nodes.

💊

Medical Monitoring Point-of-Care Devices

The MCF51JE256CLK fits point-of-care medical monitoring instruments where high-resolution analog front-end and USB data transfer are both required in a single device. Its 12-bit ADC and DAC support pulse-oximeter and blood-glucose-meter signal chains, while the integrated USB 2.0 OTG enables direct connection to host software for result logging. The ColdFire V1 deterministic interrupt response is critical for real-time waveform sampling, and 256KB Flash accommodates application firmware plus calibration constants. Low-power modes extend battery life in portable diagnostic tools, and the 80-LQFP package suits compact handheld form factors.

🔋

Low-Power Portable Instrumentation

The MCF51JE256CLK suits battery-powered portable test and measurement instruments, where its integrated 12-bit ADC, USB for charging/data transfer, and ColdFire V1 deterministic core combine in a single chip. The 2.7V to 5.5V supply range accepts single-cell Li-ion and two-AA battery configurations directly, simplifying power-tree design. Multiple low-power modes (Wait, Stop, Standby) drop quiescent current to microamp levels between measurements, and 256KB Flash supports full measurement firmware plus USB stack. The 80-LQFP package fits compact handheld enclosures with adequate thermal headroom for the 50MHz operating frequency.

🏠

Building Automation and HVAC Controllers

The MCF51JE256CLK fits building automation controllers that require USB commissioning ports plus analog sensor inputs for temperature, humidity, and air-quality measurements. Its 12-bit SAR ADC and DAC support thermistor bridges and analog actuator outputs, while the integrated USB OTG enables field technicians to load configuration profiles via USB flash drives. ColdFire V1 deterministic interrupt handling is well-suited to HVAC control loops, and the 80-LQFP package allows compact controller PCBs that fit standard electrical boxes. Wide operating voltage from 2.7V to 5.5V accommodates 24VAC-derived DC rails commonly used in building control systems.

What is the core architecture of the MCF51JE256CLK?
The MCF51JE256CLK uses the ColdFire V1 32-bit RISC core running up to 50MHz, derived from the Motorola 68000 instruction set. According to the NXP MCF51JE256 datasheet, the core delivers deterministic interrupt response suitable for real-time industrial control while maintaining low active current. ColdFire V1 preserves instruction-set compatibility with legacy ColdFire code, easing porting from older Freescale MCUs.
How much Flash and RAM does the MCF51JE256CLK have?
The MCF51JE256CLK integrates 256KB of program Flash and 32KB of RAM, as stated in the NXP product brief. Flash is organized as 256K x 8 and supports in-application programming for field firmware updates. The 32KB RAM is sufficient for USB stack buffers plus typical sensor-processing workloads in metering or HID applications.
Does the MCF51JE256CLK include USB?
Yes, the MCF51JE256CLK integrates a USB 2.0 Full-Speed On-The-Go (OTG) controller with an on-chip transceiver (PHY). Per the datasheet, the USB module supports device, host, and OTG roles without external PHY hardware. This eliminates external USB interface ICs and reduces BOM cost for HID peripherals, data loggers, and CDC-class devices.
What is the operating voltage of MCF51JE256CLK?
The MCF51JE256CLK operates from 2.7V to 5.5V supply, supporting both 3.3V and 5V rails as documented in the NXP datasheet. This wide range makes it suitable for industrial systems powered directly from 5V USB or from lithium battery stacks. Core and I/O are powered from the same rail, simplifying power-tree design.
Is the MCF51JE256CLK still in production?
The MCF51JE256CLK is in Last-Time-Buy (LTB) status per the NXP product page, with End-of-Life (EOL) documentation published. Existing inventory is available through NXP authorized distributors and third-party stockists. Engineers should verify the latest PCN notices and plan migration to active members of the Kinetis or ColdFire families.
Where can I download the MCF51JE256CLK datasheet?
The MCF51JE256CLK datasheet is available as a free PDF at https://www.nxp.com/docs/en/data-sheet/MCF51JE256.pdf. The reference manual is published at https://www.nxp.com/docs/en/reference-manual/MCF51JE256RM.pdf. Both documents include full electrical characteristics, peripheral descriptions, and programming models for the ColdFire V1 core.
What is the pinout of the MCF51JE256CLK?
The MCF51JE256CLK uses an 80-pin LQFP (12x12 mm) package with pin 1 indicated by a dot marker. According to the NXP datasheet, pins include VDD/VSS pairs, USB D+/D-, ADC inputs, GPIO ports (PTA-PTE), JTAG/SWD debug, and dedicated peripheral pins for I2C, SPI, and UART. The package_svg_key on this page renders the standard 80-LQFP layout.
What is the best drop-in replacement for MCF51JE256CLK?
The closest drop-in replacement within the same 80-LQFP package is the MCF51JE128VLK, which has identical peripherals and pinout but only 128KB Flash (50% less). Per the NXP product family datasheet, JE128 and JE256 share the same 80-LQFP pin map, so the JE128 is a verified pin-to-pin substitute when 128KB of Flash is acceptable for the target application.
MCF51JE256CLK vs MCF51MM128VLK - which should I choose?
The MCF51JE256CLK offers 256KB Flash plus an integrated USB 2.0 Full-Speed OTG with on-chip PHY, while the MCF51MM128VLK provides 128KB Flash with motor-control focused peripherals. Choose the MCF51JE256CLK for USB-connected metering, HID, or data acquisition. Choose the MCF51MM128VLK when the design needs FlexTimer PWM channels and Hall-sensor interfaces for BLDC motor control rather than USB.
How much does the MCF51JE256CLK cost?
The MCF51JE256CLK is priced at approximately 14.20 USD per unit at qty 1, dropping to 8.95 USD at qty 1000 as of 2026-10-19, based on distributor listings. Pricing reflects Last-Time-Buy availability - stock is limited and prices may rise as inventory depletes. Contact NXP authorized distributors for current quotes and lead times.
Is the MCF51JE256CLK in stock anywhere?
MCF51JE256CLK stock is available through NXP authorized distributors and a limited number of third-party brokers as of 2026-10-19, though quantities are constrained due to Last-Time-Buy status. DigiKey, Mouser, and Rochester Electronics list the part. Engineers planning new production should contact NXP for remaining-life allocation before committing to a design.
What is the lead time on MCF51JE256CLK orders?
Lead time for the MCF51JE256CLK is currently quote-based as of 2026-10-19, reflecting its Last-Time-Buy status. Authorized distributors typically fulfill from existing stock with same-day dispatch. Bulk orders should be confirmed directly with NXP or authorized partners because production has ended and allocations are finite.
When should I choose MCF51JE256CLK over an ARM Cortex-M0 alternative?
Choose the MCF51JE256CLK when the design relies on existing ColdFire firmware, requires deterministic interrupt latency, or integrates USB without an external PHY, and when stock is still available. Choose an ARM Cortex-M0/M0+ MCU instead when starting a fresh design, since ARM offers a broader ecosystem, active roadmap, and lower-cost long-term availability for new production.
What are the key specifications of MCF51JE256CLK that engineers should know?
The MCF51JE256CLK is a 32-bit ColdFire V1 MCU at 50MHz with 256KB Flash, 32KB RAM, 12-bit ADC up to 20 channels, 12-bit DAC, USB 2.0 Full-Speed OTG with integrated PHY, plus I2C, SPI, and dual UART. It runs from 2.7V to 5.5V across -40C to +85C in an 80-LQFP (12x12) package. The integrated USB PHY and rich analog front-end make it especially suited to metering and USB-HID designs.
Can the MCF51AC256BCLKE replace the MCF51JE256CLK?
The MCF51AC256BCLKE shares the same 80-LQFP package and 256KB Flash but is built on the ColdFire V1 AC family with different peripheral mix and lacks the integrated USB OTG controller of the JE series. Cross-references confirm same-package pin compatibility for many signals, but USB pin assignments and ADC channel mapping differ. Verify the pin map against your schematic before substituting.

엔지니어링 참조 데이터: MCF51JE256CLK — 비교, 설계 지침 및 규정 준수 정보.

선택 가이드

Choose the MCF51JE256CLK when designing USB-connected metering, HID peripherals, or data loggers that need 256KB Flash, 32KB RAM, and an integrated USB 2.0 Full-Speed OTG PHY in a single 80-LQFP chip. Choose the MCF51JE128VLK when 128KB Flash is sufficient and you want the same pin-compatible footprint at lower cost. Choose the MCF51MM128VLK when the application needs motor-control peripherals (FlexTimer, Hall-sensor inputs) instead of USB. Choose the MCF51AG96CLK for low-cost sensor hubs without USB. Avoid the JE256CLK for new high-volume production runs given its LTB status - plan migration to an active NXP MCU family and use JE256CLK only for sustaining existing designs or prototype builds.

대체품과의 비교

파라미터 이 제품 MCF51JE128VLK MCF51JE256CMB MCF51AG96CLK MCF51MM128VLK
Brand NXP Semiconductors NXP Semiconductors NXP Semiconductors NXP Semiconductors NXP Semiconductors
Package 80-LQFP (12x12 mm) 80-LQFP (12x12 mm) - same 81-MAPBGA - different package 80-LQFP (12x12 mm) - same 80-LQFP (12x12 mm) - same
Core ColdFire V1 32-bit ColdFire V1 32-bit ColdFire V1 32-bit ColdFire V1 32-bit ColdFire V1 32-bit
Core Frequency 50 MHz 50 MHz 50 MHz 50 MHz 50 MHz
Flash 256 KB 128 KB (-50%) 256 KB 96 KB (-62%) 128 KB (-50%)
RAM 32 KB 32 KB 32 KB 16 KB (-50%) 16 KB (-50%)
USB USB 2.0 Full-Speed OTG with PHY USB 2.0 Full-Speed OTG with PHY USB 2.0 Full-Speed OTG with PHY No USB No USB
ADC 12-bit SAR, 20 ch 12-bit SAR, 20 ch 12-bit SAR, 20 ch 12-bit SAR, fewer ch 12-bit SAR, 16 ch

주요 차별점

  • Integrated USB 2.0 Full-Speed OTG PHY (vs MCF51MM128VLK)
  • Largest Flash in the JE family at 256KB (vs MCF51JE128VLK)
  • Higher ADC channel count with integrated 12-bit DAC (vs MCF51AG96CLK)

설계 노트

Decouple each VDD/VSS pair with 100nF ceramic plus 4.7uF bulk close to the IC. The USB analog supply (VDD_USB) requires a dedicated ferrite bead or filter from VDD to keep digital switching noise out of the USB transceiver. Tie unused VDD pins to the same rail as used pins; leaving them floating can cause latch-up. The integrated USB PHY draws about 10 mA during active USB transmission, so size the 3.3V regulator for at least 50 mA total MCU load including USB.

Route the USB D+ and D- traces as a 90-ohm differential pair, length-matched within 2 mm, and keep them short (under 50 mm). Place the ESD protection array within 5 mm of the USB connector. Avoid running digital switching signals across the USB differential traces. The 80-LQFP exposed pad (if present in your variant) should be soldered to a continuous ground plane to provide thermal relief and reduce ground bounce.

Do not assume pin-compatible substitution across ColdFire families: the JE, AG, and MM families share the 80-LQFP outline but differ in peripheral pin assignments (USB pins, ADC channels, and DAC outputs). Verify the pin map against your schematic before swapping. Last-Time-Buy status means production has stopped - place lifetime-buy orders before inventory is exhausted, or migrate to an active MCU. The 50MHz ColdFire V1 core is not bus-compatible with ColdFire V2/V3/V4 devices, so porting firmware requires recompilation against the new core headers.

규정 준수 정보

RoHS
Compliant
REACH
Compliant
AEC-Q100
Not Applicable
무연
Yes
무할로겐
Yes
분쟁 광물
Compliant

RoHS and lead-free per NXP product page. Not AEC-Q100 qualified; choose VML/Q variants for automotive-grade applications.

데이터 검증일: 2026-10-19 — XAIPART 부품 엔지니어링 팀이 검증하고 관리한 데이터

관련 검색

MCF51JE256CLK MCF51JE256CLK datasheet NXP MCF51JE256CLK ColdFire 32-bit MCU 256KB Flash USB OTG 80-LQFP ColdFire V1 microcontroller MCF51JE256CLK USB HID metering MCF51JE256CLK vs MCF51JE128VLK MCF51JE256CLK drop-in replacement MCF51JE256CLK buy price LTB what is the operating voltage of MCF51JE256CLK MCF51JE256CLK pinout 80-LQFP low power 32-bit MCU with USB OTG ColdFire V1 50MHz 256KB Flash MCU

관련 부품 & 용어

NXP Semiconductors MCF51JE256CLK ColdFire V1 32-bit microcontroller MCU RISC processor Motorola 68000 family USB 2.0 Full-Speed OTG USB On-The-Go SAR ADC 12-bit DAC I2C SPI UART FlexTimer JTAG LQFP-80 LQFP surface mount RoHS Lead-Free AEC-Q100 industrial metering HID peripheral
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