MCF51JM64EVLD - Coldfire V1 32-bit MCU 64KB Flash 50MHz | NXP
料号： MCF51JM64EVLD ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.45 | $7.45 |
| 10 | $6.78 | $67.80 |
| 100 | $5.92 | $592.00 |
| 500 | $5.1 | $2,550.00 |
| 1,000 | $4.55 | $4,550.00 |
MCF51JM64EVLD 概述
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (FLASH), data memory (RAM), and integrated peripherals such as timers, ADCs, and communication interfaces. The MCF51JM series combines a Coldfire V1 core (a 32-bit variable-length RISC architecture derived from the original Motorola Coldfire) with a USB On-The-Go controller, occupying the role of low-cost USB-capable microcontroller in NXP's broader Coldfire hierarchy (Coldfire V1 -> Coldfire -> 32-bit MCU -> embedded processor -> semiconductor). This positioning makes it a frequent choice for USB peripherals, HID devices, and low-throughput human-interface equipment.
Key features of the MCF51JM64EVLD include 64KB (64K x 8) program FLASH, 16KB SRAM, 50 MHz maximum CPU clock, USB OTG full-speed controller, and a peripheral set spanning SCI (UART), SPI, I2C, PWM, LVD (low-voltage detect), and WDT (watchdog timer). The device exposes 33 general-purpose I/O pins and supports industrial temperature operation. The integrated USB OTG PHY eliminates the need for an external transceiver for full-speed (12 Mbps) USB applications.
Typical applications include USB HID peripherals (keyboards, mice, game controllers), USB-to-UART bridges, low-cost data loggers, industrial point-of-sale terminals, and educational/development boards where the combination of USB device/host capability and a familiar Coldfire toolchain (CodeWarrior, Eclipse-based GCC) reduces time-to-market.
When designing with this device, verify power-rail decoupling (100 nF + 4.7 uF near VDD pins) and place the USB D+/D- traces as a 90-ohm differential pair routed directly to the connector. The internal USB regulator must be configured per the reference manual when using bus-powered designs.
直接替换替代料： MCF51JM64EVLD ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
MCF51JM32EVLD
✅ 直接替换📋 参考替代料（不在目录中）
MCF51JM32VLD
✅ 直接替换📋 参考替代料（不在目录中）
MCF51JM128EVLD
✅ 直接替换📋 参考替代料（不在目录中）
MCF51JM64EVLH
✅ 直接替换📋 参考替代料（不在目录中）
MCF51JM64EVLD 最大额定值与电气特性
| Core Processor | Coldfire V1 |
| Core Size | 32-Bit |
| Maximum CPU Speed | 50 MHz |
| Program Memory Size | 64 KB (64K x 8) |
| Program Memory Type | FLASH |
| RAM Size | 16 KB |
| Number of I/O Pins | 33 |
| Connectivity | I2C, SCI, SPI, USB OTG |
| Peripherals | LVD, PWM, WDT |
| 封装 | 44-LQFP (10x10 mm) |
| 安装类型 | Surface Mount |
| Part Status | Obsolete |
| USB Type | USB OTG Full-Speed (12 Mbps) |
MCF51JM64EVLD 引脚配置
| 引脚 1 | PTD1/TXD1 — Port D GPIO / SCI1 transmit (alternate function) |
| 引脚 2 | PTD0/RXD1 — Port D GPIO / SCI1 receive (alternate function) |
| 引脚 3 | PTC2 — Port C GPIO |
| 引脚 4 | PTC1 — Port C GPIO |
| 引脚 5 | PTC0 — Port C GPIO |
| 引脚 6 | PTB7 — Port B GPIO |
| 引脚 7 | PTB6 — Port B GPIO |
| 引脚 8 | PTB5 — Port B GPIO |
| 引脚 9 | PTB4 — Port B GPIO |
| 引脚 10 | VSS — Ground |
| 引脚 11 | VDD — Supply voltage |
| 引脚 12 | PTB3 — Port B GPIO |
| 引脚 13 | PTB2 — Port B GPIO |
| 引脚 14 | PTB1 — Port B GPIO |
| 引脚 15 | PTB0 — Port B GPIO |
| 引脚 16 | PTA7 — Port A GPIO |
| 引脚 17 | PTA6 — Port A GPIO |
| 引脚 18 | PTA5 — Port A GPIO / IRQ (alternate) |
| 引脚 19 | PTA4 — Port A GPIO |
| 引脚 20 | PTA3 — Port A GPIO |
| 引脚 21 | PTA2 — Port A GPIO |
| 引脚 22 | PTA1 — Port A GPIO |
| 引脚 23 | PTA0 — Port A GPIO / RESET_b (alternate) |
| 引脚 24 | VSS — Ground |
| 引脚 25 | VDD — Supply voltage |
| 引脚 26 | USB0_DP — USB D+ data line (full-speed) |
| 引脚 27 | USB0_DM — USB D- data line (full-speed) |
| 引脚 28 | VSS_USB — USB ground reference |
| 引脚 29 | VDD_USB — USB 3.3V regulator output / supply |
| 引脚 30 | PTC7 — Port C GPIO |
| 引脚 31 | PTC6 — Port C GPIO |
| 引脚 32 | PTC5 — Port C GPIO |
| 引脚 33 | PTC4 — Port C GPIO |
| 引脚 34 | PTC3 — Port C GPIO |
| 引脚 35 | PTD7 — Port D GPIO |
| 引脚 36 | PTD6 — Port D GPIO |
| 引脚 37 | PTD5 — Port D GPIO |
| 引脚 38 | PTD4 — Port D GPIO |
| 引脚 39 | PTD3 — Port D GPIO |
| 引脚 40 | PTD2 — Port D GPIO |
| 引脚 41 | BKGD — Background debug mode pin |
| 引脚 42 | RESET_b — Active-low reset input |
| 引脚 43 | VSS — Ground |
| 引脚 44 | VDD — Supply voltage |
典型应用
MCF51JM64EVLD 适用于 6 应用s: USB HID Peripherals (Keyboard/Mouse/Gamepad), USB-to-UART Bridge / CDC Virtual COM Port, Low-Cost Data Loggers with USB Output, Industrial Point-of-Sale Terminals, Educational and Development Boards, USB-Connected Human Interface Devices (Touch Panels, Keypads).
USB HID Peripherals (Keyboard/Mouse/Gamepad)
The MCF51JM64EVLD is well matched to USB HID applications because its integrated USB OTG full-speed controller and 16 KB SRAM comfortably host standard HID class drivers. At 50 MHz, the Coldfire V1 core sustains 1000 Hz polling rates required by gaming peripherals, while 64 KB FLASH holds report descriptors plus application code. Engineers place the MCU between the USB connector (with 90 ohm differential routing on D+/D-) and the GPIO matrix that scans keys or reads encoders. Compared to software USB bit-banging on smaller MCUs, the integrated PHY eliminates external transceiver cost and reduces PCB area.
推荐
USB-to-UART Bridge / CDC Virtual COM Port
The MCF51JM64EVLD's USB OTG device controller combined with its on-chip SCI (UART) makes it a natural fit for USB-to-serial bridges used in industrial programming, debugging, and field-service tools. The 50 MHz Coldfire V1 core handles USB framing and UART buffering simultaneously without CPU stalls. With 64 KB FLASH, designers can embed CDC class drivers, vendor-specific protocols, and configuration firmware in a single chip. The 44-LQFP footprint keeps the bridge dongle compact, and SCI baud rates up to the bus clock permit reliable bridges above 1 Mbps.
推荐
Low-Cost Data Loggers with USB Output
For portable data loggers that record sensor readings and later export via USB, the MCF51JM64EVLD provides 16 KB RAM for circular buffers and 64 KB FLASH for logging firmware. Its integrated ADC channels (via the Coldfire V1 ADC peripheral) and I2C/SPI connectivity allow direct sensor interfacing. The USB OTG device role then enables plug-and-play file extraction to a host PC without additional interface ICs. Operating from a 3.3V rail with low power modes, the MCU supports battery-powered deployments typical of environmental and industrial telemetry loggers.
推荐
Industrial Point-of-Sale Terminals
POS peripherals such as barcode scanners, mag-stripe readers, and receipt-printer interfaces benefit from the MCF51JM64EVLD's USB OTG host capability plus SCI/SPI for connecting to printer and scanner modules. The 50 MHz Coldfire V1 core is fast enough to parse barcodes and run small display drivers. The 44-LQFP package's industrial temperature suitability allows deployment in semi-outdoor retail environments. The MCU's PWM outputs can also drive buzzers and LED indicators without extra timer ICs.
推荐
Educational and Development Boards
The MCF51JM64EVLD has historically been used in Freescale/NXP Tower System and evaluation boards where students learn Coldfire assembly and embedded C programming. The 44-LQFP package is breadboard-friendly with breakout adapters, and the 64 KB FLASH accommodates beginner-friendly firmware libraries. The integrated USB OTG controller simplifies tutorial examples because students can enumerate the device and send/receive data without external hardware. Although the part is now obsolete, existing boards remain useful for training purposes.
推荐
USB-Connected Human Interface Devices (Touch Panels, Keypads)
The MCF51JM64EVLD suits custom touch panels and matrix keypads that present themselves as USB HID composite devices to a host PC. The 33 GPIO pins are sufficient to scan an 8x8 matrix or drive a small resistive touch panel via on-chip ADC. With 16 KB RAM, the MCU holds composite HID report buffers for touch coordinates plus key events. The Coldfire V1 core sustains the required HID polling without jitter, and the integrated USB OTG eliminates the need for an external PHY that would otherwise consume board space and BOM cost.
推荐
推荐产品汇总
工程参考数据： MCF51JM64EVLD ——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 | MCF51JM32EVLD | MCF51JM32VLD | MCF51JM128EVLD | MCF51JM64EVLH |
|---|---|---|---|---|---|
| Package | 44-LQFP (10x10 mm) | 44-LQFP (10x10 mm) - same | 44-LQFP (10x10 mm) - same | 44-LQFP (10x10 mm) - same | 44-LQFP (10x10 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same |
| FLASH Size | 64 KB | 32 KB | 32 KB | 128 KB | 64 KB |
| RAM Size | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Core Speed | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| USB OTG | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) |
| GPIO Count | 33 | 33 | 33 | 33 | 33 |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
关键差异点
- 64 KB FLASH is mid-tier within the MCF51JM family （对比 MCF51JM32EVLD vs MCF51JM128EVLD)
- Integrated USB OTG full-speed PHY （对比 Discrete 8-bit MCUs requiring external USB controller)
- Coldfire V1 32-bit core at 50 MHz （对比 Comparable 8-bit 8051 USB MCUs)
设计说明
Route USB D+ and D- as a 90-ohm differential pair from pins 26-27 to the USB connector, keeping the pair length-matched within 150 mil and away from switching signals. Place the 100 nF + 4.7 uF decoupling network within 5 mm of VDD pins (11, 25, 44). The VDD_USB pin (29) requires its own 100 nF capacitor for the internal USB regulator. Estimated: at 50 MHz CPU clock with USB full-speed activity, expect ~20-30 mA peak current draw; size the power-rail trace accordingly.
Do not confuse the MCF51JM64EVLD (44-LQFP, 64 KB FLASH, industrial temp) with the MCF51JM64VLD variant (different temp grade) or the MCF51JM64VQH (different package). The 'EVLD' suffix specifically denotes 44-LQFP industrial-grade. Also note that the 'E' in MCF51JM64EVLD distinguishes the industrial temp variant from the 'V' variant; verify the exact marking on incoming stock. Programming via the BKGD pin (41) requires a Freescale/NXP BDM-compatible tool.
USB full-speed signals require controlled impedance. Use a ground reference plane beneath the D+/D- traces and avoid splits. The USB specification mandates a 15 kohm pull-down on D- and a 1.5 kohm pull-up on D+ (configurable via software for device/host detection). When operating in host mode (OTG), the MCU must drive VBUS through an external charge pump or 5V regulator - the internal USB PHY does not supply VBUS current.
合规信息
RoHS and REACH compliance per NXP/Freescale legacy product declarations. Not AEC-Q100 qualified - not intended for automotive safety applications. Lead-free (Pb-free) reflow-compatible per package marking.
