MC9S12UF32PU - 16-bit HCS12 MCU 32KB Flash USB 2.0 | NXP
N.º da peça: MC9S12UF32PU ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $12.5 | $12,50 |
| 10 | $11.2 | $112,00 |
| 100 | $9.85 | $985,00 |
| 500 | $8.95 | $4.475,00 |
| 1.000 | $8.1 | $8.100,00 |
MC9S12UF32PU Visão geral
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.
Alternativas drop-in para MC9S12UF32PU — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com MC9S12UF32PU (mesmo formato e footprint) — diferindo em Core, Package, Package Code.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
MC9S12UF32PUE
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$8.2 / unidade
Ver ficha técnica →MC9S12UF32VPE
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MC9S12UF32CPE
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MC9S12UF32PUE-NXP
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MC9S12UF32PU
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$8.1 / unidade
Ver ficha técnica →MC9S12UF32PU Classificações máximas e características elétricas
| Core | HCS12 16-bit CISC |
| Series | 9S12UF32 |
| Program Memory | 32 KB (32K x 8) Flash |
| CPU Clock Speed | 30 MHz |
| Tensão de alimentação | 5 V |
| Operating Temperature Grade | Commercial |
| Integrated USB Controller | USB 2.0 full-speed device |
| ATA/ATAPI Host Interface | Yes (PIO modes) |
| Encapsulamento | 100-LQFP (14x14 mm), gull-wing |
| Package Code | LFQFP |
| Number of Terminals | 100 |
| Tipo de montagem | Surface Mount |
| Terminal Form | GULL WING |
| Temperature Grade | COMMERCIAL |
| Application Tier | Commercial (per Freescale product tiering) |
Configuração de pinos do MC9S12UF32PU
| Pino 1 | NC — Not connected (per datasheet) |
| Pino 2 | NC — Not connected (per datasheet) |
| Pino 3 | VDDR — Voltage regulator supply |
| Pino 4 | VSS — Ground |
| Pino 5 | VDDX — External supply (I/O) |
| Pino 6 | VSSX — External ground (I/O) |
| Pino 7 | USB_DP — USB D+ data line |
| Pino 8 | USB_DN — USB D- data line |
| Pino 9 | VUSB — USB 3.3V supply |
| Pino 10 | VSS — Ground |
| Pino 11 | RESET — Active-low reset input |
| Pino 12 | BKGD — Background debug mode pin |
| Pino 13 | MODC — Mode select |
| Pino 14 | XTAL — Crystal oscillator input |
| Pino 15 | EXTAL — Crystal oscillator output |
| Pino 16 | VSSPLL — PLL ground |
| Pino 17 | VDDPLL — PLL supply |
| Pino 18 | DA2 — ATA address bit 2 |
| Pino 19 | DA1 — ATA address bit 1 |
| Pino 20 | DA0 — ATA address bit 0 |
| Pino 21 | DD0 — ATA data bit 0 |
| Pino 22 | DD1 — ATA data bit 1 |
| Pino 23 | DD2 — ATA data bit 2 |
| Pino 24 | DD3 — ATA data bit 3 |
| Pino 25 | DD4 — ATA data bit 4 |
| Pino 26 | DD5 — ATA data bit 5 |
| Pino 27 | DD6 — ATA data bit 6 |
| Pino 28 | DD7 — ATA data bit 7 |
| Pino 29 | DD8 — ATA data bit 8 |
| Pino 30 | DD9 — ATA data bit 9 |
| Pino 31 | DD10 — ATA data bit 10 |
| Pino 32 | DD11 — ATA data bit 11 |
| Pino 33 | DD12 — ATA data bit 12 |
| Pino 34 | DD13 — ATA data bit 13 |
| Pino 35 | DD14 — ATA data bit 14 |
| Pino 36 | DD15 — ATA data bit 15 |
| Pino 37 | DIOR — ATA I/O read strobe |
| Pino 38 | DIOW — ATA I/O write strobe |
| Pino 39 | DCS1 — ATA chip select 1 |
| Pino 40 | DCS0 — ATA chip select 0 |
| Pino 41 | DRESET — ATA device reset |
| Pino 42 | VSS — Ground |
| Pino 43 | VDDX — External supply (I/O) |
| Pino 44 | PAD0 — Port AD bit 0 |
| Pino 45 | PAD1 — Port AD bit 1 |
| Pino 46 | PAD2 — Port AD bit 2 |
| Pino 47 | PAD3 — Port AD bit 3 |
| Pino 48 | PAD4 — Port AD bit 4 |
| Pino 49 | PAD5 — Port AD bit 5 |
| Pino 50 | PAD6 — Port AD bit 6 |
| Pino 51 | PAD7 — Port AD bit 7 |
| Pino 52 | PAD8 — Port AD bit 8 |
| Pino 53 | PAD9 — Port AD bit 9 |
| Pino 54 | PAD10 — Port AD bit 10 |
| Pino 55 | PAD11 — Port AD bit 11 |
| Pino 56 | PAD12 — Port AD bit 12 |
| Pino 57 | PAD13 — Port AD bit 13 |
| Pino 58 | PAD14 — Port AD bit 14 |
| Pino 59 | PAD15 — Port AD bit 15 |
| Pino 60 | VSS — Ground |
| Pino 61 | VDDX — External supply (I/O) |
| Pino 62 | PT0 — Port T bit 0 (TIM channel) |
| Pino 63 | PT1 — Port T bit 1 (TIM channel) |
| Pino 64 | PT2 — Port T bit 2 (TIM channel) |
| Pino 65 | PT3 — Port T bit 3 (TIM channel) |
| Pino 66 | PT4 — Port T bit 4 (TIM channel) |
| Pino 67 | PT5 — Port T bit 5 (TIM channel) |
| Pino 68 | PT6 — Port T bit 6 (TIM channel) |
| Pino 69 | PT7 — Port T bit 7 (TIM channel) |
| Pino 70 | PJ0 — Port J bit 0 |
| Pino 71 | PJ1 — Port J bit 1 |
| Pino 72 | PJ2 — Port J bit 2 |
| Pino 73 | PJ3 — Port J bit 3 |
| Pino 74 | PJ4 — Port J bit 4 |
| Pino 75 | PJ5 — Port J bit 5 |
| Pino 76 | PJ6 — Port J bit 6 |
| Pino 77 | PJ7 — Port J bit 7 |
| Pino 78 | VSS — Ground |
| Pino 79 | VDDX — External supply (I/O) |
| Pino 80 | PP0 — Port P bit 0 (PWM) |
| Pino 81 | PP1 — Port P bit 1 (PWM) |
| Pino 82 | PP2 — Port P bit 2 (PWM) |
| Pino 83 | PP3 — Port P bit 3 (PWM) |
| Pino 84 | PP4 — Port P bit 4 (PWM) |
| Pino 85 | PP5 — Port P bit 5 (PWM) |
| Pino 86 | PP6 — Port P bit 6 (PWM) |
| Pino 87 | PP7 — Port P bit 7 (PWM) |
| Pino 88 | PS0 — Port S bit 0 (SPI) |
| Pino 89 | PS1 — Port S bit 1 (SPI) |
| Pino 90 | PS2 — Port S bit 2 (SPI MISO) |
| Pino 91 | PS3 — Port S bit 3 (SPI MOSI) |
| Pino 92 | PS4 — Port S bit 4 (SPI SCK) |
| Pino 93 | PS5 — Port S bit 5 |
| Pino 94 | PS6 — Port S bit 6 |
| Pino 95 | PS7 — Port S bit 7 |
| Pino 96 | SCI_TX — SCI transmit (UART) |
| Pino 97 | SCI_RX — SCI receive (UART) |
| Pino 98 | VSS — Ground |
| Pino 99 | VDDX — External supply (I/O) |
| Pino 100 | TEST — Test mode pin (tie to VSS in normal operation) |
Aplicações típicas
MC9S12UF32PU é adequado para 6 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MC9S12UF32PU — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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 |
Principais diferenciais
- Single-chip USB 2.0 device + ATA/ATAPI host integration (vs Generic 16-bit MCU with external USB PHY and ATA bridge ASIC)
- 30 MHz HCS12 core with deterministic interrupt latency (vs Lower-end 8-bit MCUs (e.g., 8051 class))
- 100-LQFP with abundant GPIO for parallel ATA bus (vs Smaller QFP packages with limited I/O)
Notas de projeto
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.
Informações de conformidade
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.
