MC9S12UF32PU - 16-bit HCS12 MCU 32KB Flash USB 2.0 | NXP
Référence : MC9S12UF32PU ✓ Actif| Qté | Prix unitaire | 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 Présentation
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.
Alternatives de remplacement direct pour MC9S12UF32PU — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec MC9S12UF32PU (même facteur de forme et même empreinte) — différant par Core, Package, Package Code.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC9S12UF32PUE
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$8.2 / unité
Voir la fiche technique →MC9S12UF32VPE
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC9S12UF32CPE
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC9S12UF32PUE-NXP
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC9S12UF32PU
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$8.1 / unité
Voir la fiche technique →MC9S12UF32PU Valeurs maximales et caractéristiques électriques
| Core | HCS12 16-bit CISC |
| Series | 9S12UF32 |
| Program Memory | 32 KB (32K x 8) Flash |
| CPU Clock Speed | 30 MHz |
| Tension d'alimentation | 5 V |
| Operating Temperature Grade | Commercial |
| Integrated USB Controller | USB 2.0 full-speed device |
| ATA/ATAPI Host Interface | Yes (PIO modes) |
| Boîtier | 100-LQFP (14x14 mm), gull-wing |
| Package Code | LFQFP |
| Number of Terminals | 100 |
| Type de montage | Surface Mount |
| Terminal Form | GULL WING |
| Temperature Grade | COMMERCIAL |
| Application Tier | Commercial (per Freescale product tiering) |
Configuration des broches de MC9S12UF32PU
| Broche 1 | NC — Not connected (per datasheet) |
| Broche 2 | NC — Not connected (per datasheet) |
| Broche 3 | VDDR — Voltage regulator supply |
| Broche 4 | VSS — Ground |
| Broche 5 | VDDX — External supply (I/O) |
| Broche 6 | VSSX — External ground (I/O) |
| Broche 7 | USB_DP — USB D+ data line |
| Broche 8 | USB_DN — USB D- data line |
| Broche 9 | VUSB — USB 3.3V supply |
| Broche 10 | VSS — Ground |
| Broche 11 | RESET — Active-low reset input |
| Broche 12 | BKGD — Background debug mode pin |
| Broche 13 | MODC — Mode select |
| Broche 14 | XTAL — Crystal oscillator input |
| Broche 15 | EXTAL — Crystal oscillator output |
| Broche 16 | VSSPLL — PLL ground |
| Broche 17 | VDDPLL — PLL supply |
| Broche 18 | DA2 — ATA address bit 2 |
| Broche 19 | DA1 — ATA address bit 1 |
| Broche 20 | DA0 — ATA address bit 0 |
| Broche 21 | DD0 — ATA data bit 0 |
| Broche 22 | DD1 — ATA data bit 1 |
| Broche 23 | DD2 — ATA data bit 2 |
| Broche 24 | DD3 — ATA data bit 3 |
| Broche 25 | DD4 — ATA data bit 4 |
| Broche 26 | DD5 — ATA data bit 5 |
| Broche 27 | DD6 — ATA data bit 6 |
| Broche 28 | DD7 — ATA data bit 7 |
| Broche 29 | DD8 — ATA data bit 8 |
| Broche 30 | DD9 — ATA data bit 9 |
| Broche 31 | DD10 — ATA data bit 10 |
| Broche 32 | DD11 — ATA data bit 11 |
| Broche 33 | DD12 — ATA data bit 12 |
| Broche 34 | DD13 — ATA data bit 13 |
| Broche 35 | DD14 — ATA data bit 14 |
| Broche 36 | DD15 — ATA data bit 15 |
| Broche 37 | DIOR — ATA I/O read strobe |
| Broche 38 | DIOW — ATA I/O write strobe |
| Broche 39 | DCS1 — ATA chip select 1 |
| Broche 40 | DCS0 — ATA chip select 0 |
| Broche 41 | DRESET — ATA device reset |
| Broche 42 | VSS — Ground |
| Broche 43 | VDDX — External supply (I/O) |
| Broche 44 | PAD0 — Port AD bit 0 |
| Broche 45 | PAD1 — Port AD bit 1 |
| Broche 46 | PAD2 — Port AD bit 2 |
| Broche 47 | PAD3 — Port AD bit 3 |
| Broche 48 | PAD4 — Port AD bit 4 |
| Broche 49 | PAD5 — Port AD bit 5 |
| Broche 50 | PAD6 — Port AD bit 6 |
| Broche 51 | PAD7 — Port AD bit 7 |
| Broche 52 | PAD8 — Port AD bit 8 |
| Broche 53 | PAD9 — Port AD bit 9 |
| Broche 54 | PAD10 — Port AD bit 10 |
| Broche 55 | PAD11 — Port AD bit 11 |
| Broche 56 | PAD12 — Port AD bit 12 |
| Broche 57 | PAD13 — Port AD bit 13 |
| Broche 58 | PAD14 — Port AD bit 14 |
| Broche 59 | PAD15 — Port AD bit 15 |
| Broche 60 | VSS — Ground |
| Broche 61 | VDDX — External supply (I/O) |
| Broche 62 | PT0 — Port T bit 0 (TIM channel) |
| Broche 63 | PT1 — Port T bit 1 (TIM channel) |
| Broche 64 | PT2 — Port T bit 2 (TIM channel) |
| Broche 65 | PT3 — Port T bit 3 (TIM channel) |
| Broche 66 | PT4 — Port T bit 4 (TIM channel) |
| Broche 67 | PT5 — Port T bit 5 (TIM channel) |
| Broche 68 | PT6 — Port T bit 6 (TIM channel) |
| Broche 69 | PT7 — Port T bit 7 (TIM channel) |
| Broche 70 | PJ0 — Port J bit 0 |
| Broche 71 | PJ1 — Port J bit 1 |
| Broche 72 | PJ2 — Port J bit 2 |
| Broche 73 | PJ3 — Port J bit 3 |
| Broche 74 | PJ4 — Port J bit 4 |
| Broche 75 | PJ5 — Port J bit 5 |
| Broche 76 | PJ6 — Port J bit 6 |
| Broche 77 | PJ7 — Port J bit 7 |
| Broche 78 | VSS — Ground |
| Broche 79 | VDDX — External supply (I/O) |
| Broche 80 | PP0 — Port P bit 0 (PWM) |
| Broche 81 | PP1 — Port P bit 1 (PWM) |
| Broche 82 | PP2 — Port P bit 2 (PWM) |
| Broche 83 | PP3 — Port P bit 3 (PWM) |
| Broche 84 | PP4 — Port P bit 4 (PWM) |
| Broche 85 | PP5 — Port P bit 5 (PWM) |
| Broche 86 | PP6 — Port P bit 6 (PWM) |
| Broche 87 | PP7 — Port P bit 7 (PWM) |
| Broche 88 | PS0 — Port S bit 0 (SPI) |
| Broche 89 | PS1 — Port S bit 1 (SPI) |
| Broche 90 | PS2 — Port S bit 2 (SPI MISO) |
| Broche 91 | PS3 — Port S bit 3 (SPI MOSI) |
| Broche 92 | PS4 — Port S bit 4 (SPI SCK) |
| Broche 93 | PS5 — Port S bit 5 |
| Broche 94 | PS6 — Port S bit 6 |
| Broche 95 | PS7 — Port S bit 7 |
| Broche 96 | SCI_TX — SCI transmit (UART) |
| Broche 97 | SCI_RX — SCI receive (UART) |
| Broche 98 | VSS — Ground |
| Broche 99 | VDDX — External supply (I/O) |
| Broche 100 | TEST — Test mode pin (tie to VSS in normal operation) |
Applications typiques
MC9S12UF32PU convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC9S12UF32PU — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- 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)
Notes de conception
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.
Informations de conformité
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.
