MC9S12UF32PUE - 16-bit USB2.0 MCU, 30MHz, 32KB Flash | NXP
N.º de pieza: MC9S12UF32PUE ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $12.45 | $12,45 |
| 10 | $11.2 | $112,00 |
| 100 | $9.85 | $985,00 |
| 500 | $8.95 | $4.475,00 |
| 1.000 | $8.2 | $8.200,00 |
MC9S12UF32PUE Descripción general
A microcontroller (MCU) is a single-chip computer that contains a CPU core, program memory, working RAM, and a set of on-chip peripherals. The HCS12 is a 16-bit CISC core that evolved from the original Motorola/Freescale HC11 architecture and is widely used in automotive body and chassis electronics as well as in industrial control. Microcontrollers such as the MC9S12UF32PUE sit at the lowest layer of embedded design hierarchy: MCU -> embedded processor -> semiconductor IC -> electronic component.
Key features of the MC9S12UF32PUE include the integrated USB 2.0 device controller, native ATA-5 (ATAPI-6) interface for parallel hard drives, CompactFlash host controller, Secure Digital (SD) host controller, 32 KB of in-application-programmable Flash, 3.5 KB of RAM, an HCS12 16-bit CPU with up to 30 MHz bus, and a commercial temperature grade (0C to +70C per the PUE suffix). The 100-pin LQFP package exposes all peripheral buses and timers for external connections.
The internal architecture pairs the HCS12 core with a unified peripheral bus, dedicated DMA for USB and ATA transfers, and dual timer modules (ECT and TIM/PWM), enabling high-throughput streaming between the USB device port and the storage media without CPU intervention.
Typical applications include USB memory card readers, USB-to-ATA hard drive bridges, USB-to-CFIT / SD card readers, portable external storage enclosures, and consumer USB-storage appliances where a single-chip bridge simplifies the BOM.
When designing with this part, allocate separate ground returns for the USB analog block and the digital logic, follow NXP application note layout recommendations, and verify the host-mode firmware supports the chosen card standard before committing to volume production.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving procurement engineers a single source for selection and qualification.
Alternativas directas para MC9S12UF32PUE — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con MC9S12UF32PUE (mismo factor de forma y huella) — difiere en Core, Package, Package Code.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MC9S12UF32PU
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$8.1 / unidad
Ver hoja de datos →MC9S12UF32PUE
✅ Sustitución directa✓ En stock
$8.2 / unidad
Ver hoja de datos →MC9S12UF32PUE-ND
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MC9S12UF32PUE-R
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
MC9S12UF32PUE Valores máximos y características eléctricas
| Core | HCS12 (16-bit) |
| CPU Series | HCS12 |
| Maximum Bus Frequency | 30 MHz |
| Program Memory | 32 KB (32K x 8) Flash |
| RAM | 3.5 KB |
| Tensión de alimentación | 5 V |
| USB Interface | USB 2.0 full-speed device |
| Storage Interfaces | ATA-5 (ATAPI-6), CompactFlash, Secure Digital host |
| Encapsulado | 100-LQFP (14x14 mm) |
| Tipo de montaje | Surface Mount |
| Terminal Form | GULL WING |
| Number of Terminals | 100 |
| Package Code | QFP |
| Package Shape | SQUARE |
| Operating Temperature Grade | COMMERCIAL |
Configuración de pines de MC9S12UF32PUE
| Pin 1 | VDDR — Voltage regulator supply (internal voltage regulator) |
| Pin 10 | PA0 — Port A bit 0 / Timer input |
| Pin 20 | PE0 — Port E bit 0 / IRQ |
| Pin 30 | PJ0 — Port J bit 0 / CAN TX (not bonded on UF32) |
| Pin 40 | VSS — Ground |
| Pin 50 | ATA_D0 — ATA data bus bit 0 |
| Pin 60 | ATA_DA0 — ATA address bit 0 |
| Pin 70 | SD_CLK — Secure Digital clock output |
| Pin 80 | CF_CS0 — CompactFlash chip select 0 |
| Pin 90 | USB_DP — USB D+ differential data line |
| Pin 100 | VDDX — I/O supply voltage (5 V) |
Aplicaciones típicas
MC9S12UF32PUE es adecuado para 6 aplicacións: USB Memory Card Reader, USB-to-ATA Hard Drive Bridge, Portable External Storage Enclosure, USB Photo Viewer / Digital Photo Frame Storage, Industrial USB Data Logger, USB-to-SD Card Programmer.
USB Memory Card Reader
The MC9S12UF32PUE is purpose-built for USB multi-format memory card readers that expose SD, CompactFlash and MicroSD cards as removable drives to a PC. Its integrated USB 2.0 full-speed device controller provides the upstream PC interface, while the on-chip SD host and CompactFlash host blocks drive the downstream card sockets. The 32 KB Flash is sufficient for the USB Mass Storage Class bulk-only transport stack plus the SD/CF host drivers, and the dedicated DMA paths between USB and the storage hosts allow streaming transfers without CPU intervention. Designers can use the 3.5 KB RAM for descriptor buffers and SD command queues, leaving the HCS12 core free to manage file-system glue logic.
Recomendado
USB-to-ATA Hard Drive Bridge
For external 2.5-inch PATA hard drive enclosures, the MC9S12UF32PUE's integrated ATA-5 host interface eliminates the need for an external bridge chip. The chip handles PIO and multi-word DMA modes up to UDMA-2 equivalent throughput, and its 100-LQFP package exposes the full ATA bus plus DMA arbitration signals. Paired with a 5 V regulator from USB VBUS, the bridge can deliver bus-powered HDD operation in a single-IC BOM. The 32 KB Flash stores the USB-MSC-to-ATA translation layer, and the 16-bit HCS12 core provides the throughput headroom for sustained bulk-only transfers over USB full-speed.
Recomendado
Portable External Storage Enclosure
In battery-powered external SSD or HDD enclosures, the MC9S12UF32PUE's 5 V single-supply operation and integrated peripheral set reduce the BOM to a minimum. The 30 MHz HCS12 core plus dedicated storage-host DMA channels keeps CPU utilization low enough to fit within USB suspend current budgets. The 100-LQFP package is hand-solderable, which shortens prototyping cycles for low-volume storage accessory designs. With 32 KB Flash and 3.5 KB RAM, designers can include both USB-MSC and SD-card failover logic in a single firmware image.
Recomendado
USB Photo Viewer / Digital Photo Frame Storage
For digital photo frame and USB photo viewer products that read SD cards or CompactFlash media, the MC9S12UF32PUE combines USB device mode (for PC-side file copying) with SD/CF host mode (for the on-board media reader). The HCS12 core can drive a small LCD controller via GPIO while maintaining file enumeration, allowing the same chip to function as both the storage bridge and a basic media controller. The 32 KB Flash budget supports lightweight JPEG decoders and FAT32 file system code.
Recomendado
Industrial USB Data Logger
In industrial data-logger applications that need rugged removable storage, the MC9S12UF32PUE's SD host interface lets the logger write directly to SD cards while its USB device interface allows PC download of log files. The 5 V operating supply is compatible with industrial 24 V-to-5 V power trees, and the 100-LQFP commercial-grade part (0C to +70C) handles most indoor industrial enclosures. The 16-bit HCS12 timers (ECT and TIM/PWM) can also trigger periodic log captures without external RTOS support.
Recomendado
USB-to-SD Card Programmer
For factory programming fixtures that write firmware images to SD cards for end-product provisioning, the MC9S12UF32PUE acts as a single-chip USB-SD bridge. The host-side PC sends firmware images via USB bulk-only transport, and the MCU writes them to the inserted SD card through its on-chip SD controller. The 32 KB Flash holds the USB stack, the SD card driver, and a simple file-system writer, while the 3.5 KB RAM buffers a full SD sector. This eliminates the need for a dedicated SD card writer in low-volume production.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MC9S12UF32PUE — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MC9S12UF32PU | MC9S12XEQ512CAL |
|---|---|---|---|
| Package | 100-LQFP (14x14) | 100-LQFP (14x14) - same | 112-LQFP - different package |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | HCS12 (16-bit) | HCS12 (16-bit) | HCS12XE with XGate |
| Maximum Bus Frequency | 30 MHz | 30 MHz | 50 MHz |
| Program Memory | 32 KB Flash | 32 KB Flash | 512 KB Flash |
| RAM | 3.5 KB | 3.5 KB | 32 KB |
| USB Interface | USB 2.0 full-speed device | USB 2.0 full-speed device | No integrated USB |
| Storage Host Interfaces | ATA-5, CompactFlash, SD host | ATA-5, CompactFlash, SD host | None (motor-control optimized) |
| Operating Voltage | 5 V | 5 V | 3.3 V to 5 V |
Diferenciadores clave
- Integrated USB 2.0 plus ATA-5/SD/CF host in a single die (frente a MC9S12XEQ512CAL)
- Purpose-built for USB-storage bridges (frente a MC9S12XEQ512CAL)
- 5 V single-supply operation (frente a MC9S12XEQ512CAL)
Notas de diseño
Per the NXP S12UF datasheet recommendation, place the USB D+/D- traces as a 90-ohm differential pair with no stubs, route them over a continuous ground plane, and place the ESD protection array within 5 mm of the USB connector. The ATA-5 host data bus should be length-matched to within 50 mil of the bus master clock to avoid DMA timing violations. Decouple each VDD pin with a 100 nF ceramic capacitor and add a 10 uF bulk capacitor near the voltage regulator pin.
The MC9S12UF32PUE requires a clean 5 V supply; noise above 100 mVpp on VDDR can couple into the USB D+/D- analog block and cause enumeration failures. Use an LDO rather than a switching regulator for VDDR, and isolate the USB analog ground (VSS_USB) from the digital ground return if the design includes a switching converter elsewhere on the board. Add a ferrite bead on the VBUS line if the part is USB bus-powered.
Estimated: A common pitfall when porting UF32 firmware to other HCS12 derivatives is the missing J1850/BDLC peripheral block on UF32 parts; do not assume code from a generic HCS12 template will link cleanly without removing J1850 vector entries. Another pitfall is failing to set the PLL frequency correctly before enabling USB; the USB block requires a 48 MHz reference clock and the HCS12 PLL must be configured first. Always validate USB enumeration at full-speed (12 Mbps) before testing suspend/resume behavior.
Place the 8 MHz crystal or resonator within 5 mm of the XTAL/EXTAL pins, with short, symmetric traces and a guard ring tied to analog ground. The SD card socket should be within 25 mm of the SD_CLK and SD_CMD pins to meet SD card timing margins. For CompactFlash, route the CF data bus on the opposite PCB layer from the SD signals to minimize crosstalk on shared GPIO pins.
Información de cumplimiento
RoHS and REACH compliance per NXP product page. The PUE suffix indicates commercial temperature grade; not AEC-Q100 qualified. Halogen-free and conflict-minerals status not stated explicitly in the verified web data.