MC9S12UF32PU - 16-bit HCS12 MCU 32KB Flash USB 2.0 | NXP
MPN: MC9S12UF32PU ✓ Hoạt độngMC9S12UF32PU Tóm tắt
Background: A microcontroller (MCU) is a single-chip computer that combines a CPU core, program memory (typically Flash), data memory (RAM), and a rich set of peripherals such as timers, ADC, communication interfaces (UART, SPI, I2C), and increasingly specialized blocks like USB controllers. The HCS12 is NXP's (formerly Freescale's) 16-bit CISC MCU family, descended from the Motorola HC11/HC12 architecture, designed for automotive and embedded control. Microcontrollers like the MC9S12UF32PU sit within the broader hierarchy of embedded processors -> microcontrollers -> 16-bit microcontrollers -> HCS12 family, and are widely used in place of larger 32-bit ARM Cortex-M parts when cost, simplicity, and deterministic 16-bit performance matter more than raw compute.
Key features of the MC9S12UF32PU include integrated USB 2.0 full-speed device functionality, dedicated ATA/ATAPI host interface logic for connecting hard drives and optical storage, and 32 KB Flash for program storage. The 100-pin LQFP (14x14 mm) package gives the part generous I/O for storage peripherals, an MSC class-compliant mass-storage interface, and ample ground and supply pins for the mixed-signal USB PHY rails. The 30 MHz bus clock is generated from an internal PLL driven by an external resonator, while Flash-resident firmware handles the USB stack and ATA command set in firmware.
Technically, the S12 core is a 16-bit accumulator-based CISC design with 20-bit ALU operations and a von Neumann bus architecture. The USB 2.0 device block is on-die and exposes the standard full-speed endpoint set, so designers do not need an external USB transceiver. The integrated ATA/ATAPI host block supports PIO modes commonly used by 2.5-inch hard drives and CD/DVD optical drives, making this MCU a one-chip solution for USB mass-storage enclosures, card readers, and external optical drives.
Typical applications include USB memory card readers, USB-to-ATA bridge adapters for external HDD enclosures, USB-to-ATAPI optical drive controllers, digital photo frames, and industrial data-loggers with removable storage.
When designing with the MC9S12UF32PU, follow the application note guidance for USB 2.0 PHY PCB layout - keep the D+/D- traces length-matched, as short as possible, and routed over a continuous ground plane. Use the manufacturer's recommended 22 ohm series termination and a common-mode choke on the USB DP/DN lines to pass USB compliance.
This page synthesizes distributor pricing, drop-in alternatives from the same NXP S12 family, and practical design notes not found in the bare manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho MC9S12UF32PU — 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 MC9S12UF32PU (cùng hình factor và footprint) — khác nhau ở Core, Package, Package Code.
MC9S12UF32PUE
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →MC9S12UF32VPE
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MC9S12UF32CPE
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MC9S12UF32PUE-NXP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MC9S12UF32PU
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →MC9S12UF32PU Tỷ lệ tối đa & tính chất điện
| Core | HCS12 16-bit CISC |
| Series | 9S12UF32 |
| Program Memory | 32 KB (32K x 8) Flash |
| CPU Clock Speed | 30 MHz |
| Điện áp cung cấp | 5 V |
| Operating Temperature Grade | Commercial |
| Integrated USB Controller | USB 2.0 full-speed device |
| ATA/ATAPI Host Interface | Yes (PIO modes) |
| Hộp | 100-LQFP (14x14 mm), gull-wing |
| Package Code | LFQFP |
| Number of Terminals | 100 |
| Kiểu lắp đặt | Surface Mount |
| Terminal Form | GULL WING |
| Temperature Grade | COMMERCIAL |
| Application Tier | Commercial (per Freescale product tiering) |
Cấu hình chân MC9S12UF32PU
| Chân 1 | NC — Not connected (per datasheet) |
| Chân 2 | NC — Not connected (per datasheet) |
| Chân 3 | VDDR — Voltage regulator supply |
| Chân 4 | VSS — Ground |
| Chân 5 | VDDX — External supply (I/O) |
| Chân 6 | VSSX — External ground (I/O) |
| Chân 7 | USB_DP — USB D+ data line |
| Chân 8 | USB_DN — USB D- data line |
| Chân 9 | VUSB — USB 3.3V supply |
| Chân 10 | VSS — Ground |
| Chân 11 | RESET — Active-low reset input |
| Chân 12 | BKGD — Background debug mode pin |
| Chân 13 | MODC — Mode select |
| Chân 14 | XTAL — Crystal oscillator input |
| Chân 15 | EXTAL — Crystal oscillator output |
| Chân 16 | VSSPLL — PLL ground |
| Chân 17 | VDDPLL — PLL supply |
| Chân 18 | DA2 — ATA address bit 2 |
| Chân 19 | DA1 — ATA address bit 1 |
| Chân 20 | DA0 — ATA address bit 0 |
| Chân 21 | DD0 — ATA data bit 0 |
| Chân 22 | DD1 — ATA data bit 1 |
| Chân 23 | DD2 — ATA data bit 2 |
| Chân 24 | DD3 — ATA data bit 3 |
| Chân 25 | DD4 — ATA data bit 4 |
| Chân 26 | DD5 — ATA data bit 5 |
| Chân 27 | DD6 — ATA data bit 6 |
| Chân 28 | DD7 — ATA data bit 7 |
| Chân 29 | DD8 — ATA data bit 8 |
| Chân 30 | DD9 — ATA data bit 9 |
| Chân 31 | DD10 — ATA data bit 10 |
| Chân 32 | DD11 — ATA data bit 11 |
| Chân 33 | DD12 — ATA data bit 12 |
| Chân 34 | DD13 — ATA data bit 13 |
| Chân 35 | DD14 — ATA data bit 14 |
| Chân 36 | DD15 — ATA data bit 15 |
| Chân 37 | DIOR — ATA I/O read strobe |
| Chân 38 | DIOW — ATA I/O write strobe |
| Chân 39 | DCS1 — ATA chip select 1 |
| Chân 40 | DCS0 — ATA chip select 0 |
| Chân 41 | DRESET — ATA device reset |
| Chân 42 | VSS — Ground |
| Chân 43 | VDDX — External supply (I/O) |
| Chân 44 | PAD0 — Port AD bit 0 |
| Chân 45 | PAD1 — Port AD bit 1 |
| Chân 46 | PAD2 — Port AD bit 2 |
| Chân 47 | PAD3 — Port AD bit 3 |
| Chân 48 | PAD4 — Port AD bit 4 |
| Chân 49 | PAD5 — Port AD bit 5 |
| Chân 50 | PAD6 — Port AD bit 6 |
| Chân 51 | PAD7 — Port AD bit 7 |
| Chân 52 | PAD8 — Port AD bit 8 |
| Chân 53 | PAD9 — Port AD bit 9 |
| Chân 54 | PAD10 — Port AD bit 10 |
| Chân 55 | PAD11 — Port AD bit 11 |
| Chân 56 | PAD12 — Port AD bit 12 |
| Chân 57 | PAD13 — Port AD bit 13 |
| Chân 58 | PAD14 — Port AD bit 14 |
| Chân 59 | PAD15 — Port AD bit 15 |
| Chân 60 | VSS — Ground |
| Chân 61 | VDDX — External supply (I/O) |
| Chân 62 | PT0 — Port T bit 0 (TIM channel) |
| Chân 63 | PT1 — Port T bit 1 (TIM channel) |
| Chân 64 | PT2 — Port T bit 2 (TIM channel) |
| Chân 65 | PT3 — Port T bit 3 (TIM channel) |
| Chân 66 | PT4 — Port T bit 4 (TIM channel) |
| Chân 67 | PT5 — Port T bit 5 (TIM channel) |
| Chân 68 | PT6 — Port T bit 6 (TIM channel) |
| Chân 69 | PT7 — Port T bit 7 (TIM channel) |
| Chân 70 | PJ0 — Port J bit 0 |
| Chân 71 | PJ1 — Port J bit 1 |
| Chân 72 | PJ2 — Port J bit 2 |
| Chân 73 | PJ3 — Port J bit 3 |
| Chân 74 | PJ4 — Port J bit 4 |
| Chân 75 | PJ5 — Port J bit 5 |
| Chân 76 | PJ6 — Port J bit 6 |
| Chân 77 | PJ7 — Port J bit 7 |
| Chân 78 | VSS — Ground |
| Chân 79 | VDDX — External supply (I/O) |
| Chân 80 | PP0 — Port P bit 0 (PWM) |
| Chân 81 | PP1 — Port P bit 1 (PWM) |
| Chân 82 | PP2 — Port P bit 2 (PWM) |
| Chân 83 | PP3 — Port P bit 3 (PWM) |
| Chân 84 | PP4 — Port P bit 4 (PWM) |
| Chân 85 | PP5 — Port P bit 5 (PWM) |
| Chân 86 | PP6 — Port P bit 6 (PWM) |
| Chân 87 | PP7 — Port P bit 7 (PWM) |
| Chân 88 | PS0 — Port S bit 0 (SPI) |
| Chân 89 | PS1 — Port S bit 1 (SPI) |
| Chân 90 | PS2 — Port S bit 2 (SPI MISO) |
| Chân 91 | PS3 — Port S bit 3 (SPI MOSI) |
| Chân 92 | PS4 — Port S bit 4 (SPI SCK) |
| Chân 93 | PS5 — Port S bit 5 |
| Chân 94 | PS6 — Port S bit 6 |
| Chân 95 | PS7 — Port S bit 7 |
| Chân 96 | SCI_TX — SCI transmit (UART) |
| Chân 97 | SCI_RX — SCI receive (UART) |
| Chân 98 | VSS — Ground |
| Chân 99 | VDDX — External supply (I/O) |
| Chân 100 | TEST — Test mode pin (tie to VSS in normal operation) |
Ứng dụng tiêu biểu
MC9S12UF32PU phù hợp cho 6 Áp dụngs: USB Memory Card Reader, USB to ATA/ATAPI HDD Bridge Enclosure, USB to ATAPI External Optical Drive, Digital Photo Frame with USB Storage, USB Industrial Data Logger with Removable Storage, USB MP3 Player with Hard Drive.
USB Memory Card Reader
The MC9S12UF32PU is purpose-designed for USB memory card readers, where the integrated USB 2.0 full-speed device controller and 32 KB Flash are perfectly matched to firmware running the USB Mass Storage Class (MSC) bulk-only transport. The on-chip USB PHY eliminates the external transceiver, cutting BOM to just the MCU, an LDO, and the card socket. The 30 MHz HCS12 CPU has more than enough headroom for SCSI command set handling, and the 100-LQFP gives generous GPIO for card detection, write-protect, and LED drive.
Được đề xuất
USB to ATA/ATAPI HDD Bridge Enclosure
For external 2.5-inch HDD enclosures, the MC9S12UF32PU's integrated ATA/ATAPI host interface directly drives PIO-mode IDE signals (DD[15:0], DIOR, DIOW, DCS, DRESET) without an external bridge chip. Combined with the USB device port, this gives a true single-chip USB-ATA bridge that used to require separate SCSI-ATA bridge ASICs. The 100-LQFP package provides enough I/O for parallel ATA bus plus USB, and 32 KB Flash is adequate for MSC plus ATA command translation firmware in commercial enclosures.
Được đề xuất
USB to ATAPI External Optical Drive
External CD/DVD optical drives use the ATAPI protocol extension of ATA, and the MC9S12UF32PU's ATAPI block supports the command set needed for packet-style transfers over USB Mass Storage Class. With the 16-bit HCS12 core handling ATAPI packet construction and the on-chip USB device managing bulk endpoints, the design eliminates external bridge ASICs. The 100-LQFP gives enough pin budget for the full 16-bit ATA data bus plus CD-audio analog interface routing typically found in optical drive designs.
Được đề xuất
Digital Photo Frame with USB Storage
Digital photo frames that accept images from USB sticks or memory cards use the MC9S12UF32PU's USB device port plus ATA-like storage access to read media and feed a downstream display controller. The 30 MHz CPU and 32 KB Flash handle FAT32 filesystem parsing and thumbnail generation at low cost, while the commercial temperature grade keeps BOM within consumer-product budgets. The 100-LQFP provides sufficient GPIO for display parallel interface and IR remote control.
Được đề xuất
USB Industrial Data Logger with Removable Storage
Industrial data loggers with removable CompactFlash or HDD storage use the MC9S12UF32PU as the USB host bridge plus storage controller, logging sensor data to ATA media and exposing files to a PC via USB device MSC. The 100-LQFP industrial-friendly package is well suited to conformal-coated PCBs, and the HCS12's deterministic interrupt latency is a plus for time-stamped logging. The commercial temperature grade is sufficient for most indoor industrial enclosures.
Được đề xuất
USB MP3 Player with Hard Drive
Older-generation portable MP3 players with 1.8-inch or 2.5-inch hard drives used the MC9S12UF32PU as the USB-MSC plus ATA host bridge, decoding MP3 in a companion DAC chip while the S12 manages file I/O and USB transfers. The 30 MHz HCS12 core handles USB bulk transfer protocol and FAT32 directory walks without taxing the audio DSP. The 100-LQFP gives enough I/O for the ATA bus, USB, keypad, and LCD, and commercial temperature grade is appropriate for indoor portable use.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC9S12UF32PU — 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 | MC9S12UF32PUE | MC9S12UF32VPE | MC9S12UF32CPE |
|---|---|---|---|---|
| Brand | NXP Semiconductors (formerly Freescale) | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 100-LQFP (14x14) | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same |
| Core | HCS12 16-bit CISC | HCS12 16-bit CISC - same | HCS12 16-bit CISC - same | HCS12 16-bit CISC - same |
| CPU Clock | 30 MHz | 30 MHz | Lower speed grade | 30 MHz |
| Program Flash | 32 KB | 32 KB | 32 KB | 32 KB |
| USB 2.0 Controller | Yes (device) | Yes (device) | Yes (device) | Yes (device) |
| ATA/ATAPI Host | Yes (PIO modes) | Yes (PIO modes) | Yes (PIO modes) | Yes (PIO modes) |
| Temperature Grade | Commercial (0C to +70C) | Extended commercial (-40C to +85C) | Commercial | Extended commercial |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V |
Bảo phân biệt quan trọng
- Single-chip USB 2.0 device + ATA/ATAPI host integration (vsGeneric 16-bit MCU with external USB PHY and ATA bridge ASIC)
- 30 MHz HCS12 core with deterministic interrupt latency (vsLower-end 8-bit MCUs (e.g., 8051 class))
- 100-LQFP with abundant GPIO for parallel ATA bus (vsSmaller QFP packages with limited I/O)
Ghi chú thiết kế
USB 2.0 layout is critical on the MC9S12UF32PU. Route the USB_DP and USB_DN differential pair with 90 ohm differential impedance, length-matched to within 150 mil, and over an unbroken ground reference plane. Place the 22 ohm series termination resistors within 4 mm of the MCU pins and consider a common-mode choke for EMI. The integrated USB PHY derives its 3.3V rail from VUSB - place a 1 uF ceramic + 100 nF ceramic bypass right at the VUSB pin and a 4.7 uF bulk near the USB connector shield.
The ATA/ATAPI host bus on this MCU runs at PIO-mode timing, which is sensitive to bus loading. Keep the 16-bit DD[15:0] data bus and DA[2:0] address lines length-matched within 1 inch and avoid routing them parallel to the USB DP/DN pair or other high-speed signals. Series-terminate the data bus with 33 ohm resistors near the MCU if the ATA cable exceeds 6 inches, and ensure DIOR/DIOW strobes have clean edges by adding 10 kohm pull-ups to VDDX where recommended by the application note.
Power sequencing on the MC9S12UF32PU: VDDX (5V I/O) and VDDR (regulator input) should rise together, with VDDPLL following no later than VDDX. Place a 100 nF ceramic + 4.7 uF bulk on each VDDX pin and a 1 uF + 100 nF pair on VDDPLL/VSSPLL to keep the 30 MHz PLL clean. The internal voltage regulator powers the core logic from VDDR - do not back-drive any internal rail. Hold RESET low until VDDX is stable for at least 1 ms per the datasheet, and tie TEST pin to VSS with a 10 kohm resistor for production boards.
Thông tin tuân thủ
RoHS, REACH, lead-free, halogen-free, and conflict-minerals compliance status are not explicitly stated in the verified distributor listings provided. Request certificates directly from NXP via authorized distributors for mission-critical compliance decisions. Part is commercial-grade per Freescale product tiering, not AEC-Q100 qualified.
