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Silicon Labs C8051F382-GQR
- Part No.:
- C8051F382-GQR
- Manufacturer:
- Silicon Labs
- Category:
- Microcontrollers
- Package:
- 48-TQFP
- Datasheet:
-
C8051F382-GQR.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,023
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Product details
Overview
C8051F382-GQR from Silicon Laboratories is a full-speed USB Flash MCU featuring a pipelined 8051 core (up to 48 MIPS), integrated USB 2.0 controller (12 Mbps), 10-bit ADC (500 ksps), two comparators, and internal voltage reference. It operates from 2.7–5.25 V, supports on-the-fly clock switching, and targets embedded USB peripheral designs requiring mixed-signal control and host communication.
For engineers reviewing the C8051F382-GQR datasheet, C8051F382-GQR pinout, C8051F382-GQR application, or C8051F382-GQR equivalent, this page delivers verified specifications, package mapping, USB endpoint configuration details, ADC timing behavior, and validated alternative MCUs for USB-enabled industrial sensors and diagnostic tools.
Technical Context
The C8051F382-GQR implements a CIP-51 8051-compatible core with prefetch engine and pipelined execution-enabling 70% of instructions in 1–2 system clocks. Its USB function controller complies with USB 2.0, supports eight flexible endpoints, and integrates transceiver and 1 kB FIFO buffer without external resistors.
It includes a 10-bit SAR ADC with built-in analog multiplexer (single-ended/differential), temperature sensor, and external conversion start input; plus dual SMBus/I²C interfaces, two enhanced UARTs, hardware SPI, six 16-bit timers, and a 5-channel programmable counter array (PCA) with PWM and capture/compare modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | CIP-51 8051-compatible, pipelined, executes 70% of instructions in 1–2 clocks |
| Max Core Speed | 48 MIPS at 48 MHz system clock-enables real-time USB transaction handling and sensor processing |
| USB Interface | Full-speed (12 Mbps) USB 2.0 compliant; integrated transceiver and clock recovery-no crystal required |
| ADC Resolution & Rate | 10-bit SAR ADC with up to 500 ksps sampling-supports high-fidelity analog monitoring in compact USB devices |
| Flash / RAM | 32 kB ISP flash (512-byte sector erase); 4352 B RAM-sufficient for USB device firmware + application logic |
| Supply Voltage | 2.7–5.25 V with on-chip regulators-enables direct connection to USB bus power or wide-input industrial rails |
| I/O Pins | 40 GPIO (5 V tolerant, high sink current)-supports direct interface to LEDs, switches, and legacy peripherals |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply | Connects to 2.7–5.25 V rail; powers core, analog, and I/O domains |
| GND | Ground reference | Common return for all analog/digital circuits; requires low-impedance PCB plane |
| USB D+ | USB differential data positive | Direct connection to USB host/device; internal 1.5 kΩ pull-up enables full-speed enumeration |
| USB D− | USB differential data negative | Paired with D+; no external termination needed due to integrated transceiver |
| P0.0–P0.7 | Port 0 bidirectional I/O | 5 V tolerant; configurable as general-purpose or alternate function (UART0, SMBus0, etc.) |
| P1.0–P1.7 | Port 1 bidirectional I/O | 5 V tolerant; supports PCA channel outputs, timer inputs, and comparator inputs |
| P2.0–P2.7 | Port 2 bidirectional I/O | 5 V tolerant; includes USB suspend control (P2.0), external memory interface signals (P2.2–P2.7) |
| P3.0–P3.7 | Port 3 bidirectional I/O | 5 V tolerant; supports UART1, SPI0, and ADC0 analog inputs (P3.0–P3.3) |
| VBUS | USB bus voltage sense | Detects presence of 4.4–5.25 V USB power; enables self-powered vs. bus-powered mode selection |
| REGIN | Voltage regulator input | Accepts 2.7–5.25 V; feeds internal LDOs for core and analog domains |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB 2.0 Transceiver | Eliminates external resistors and PHY IC-reduces BOM count and PCB area for USB-peripheral designs |
| On-Chip Debug (C2 Interface) | Enables non-intrusive in-system debug via 2-pin interface-no emulator or target pod required |
| Internal Oscillator Accuracy | ±0.25% with clock recovery enabled-meets USB full-speed timing requirements without crystal |
| ADC with Temperature Sensor | On-die thermal sensing enables self-calibration and ambient monitoring without external components |
| Flexible Power Management | Idle, Stop, and Suspend modes with wake-on-USB, comparator, or timer-extends battery life in portable USB devices |
Applications
| USB Human Interface Device (HID) | Industrial Sensor Node |
|---|---|
Use Scenario: A compact USB-connected button panel or rotary encoder used in lab equipment or medical consoles. IC Role / Device Role / Timing Role: MCU handles HID report generation, USB descriptor management, and real-time I/O scanning. Use Value: Integrated USB transceiver and ±0.25% oscillator eliminate external timing components, reducing bill-of-materials and layout complexity. | Use Scenario: A field-deployable temperature and voltage monitor that logs data and uploads via USB mass storage emulation. IC Role / Device Role / Timing Role: Performs analog acquisition (10-bit ADC, 500 ksps), local processing, and USB bulk transfers. Use Value: On-chip temperature sensor and internal voltage reference enable accurate calibration without discrete references or trimming. |
| USB Diagnostic Tool | Embedded USB-to-UART Bridge |
Use Scenario: A handheld service tool that reads CAN/J1939 or LIN bus diagnostics over USB using vendor-specific class drivers. IC Role / Device Role / Timing Role: Acts as USB device endpoint controller while managing serial protocol translation and error reporting. Use Value: Dual enhanced UARTs and eight configurable endpoints support concurrent command/response and streaming data paths. | Use Scenario: A plug-and-play adapter converting USB commands to RS-232/RS-485 signals for legacy industrial controllers. IC Role / Device Role / Timing Role: Bridges USB CDC ACM class to hardware UART with flow control and baud rate agility. Use Value: Hardware-enhanced UARTs with fractional baud generators maintain precise timing across 300–2 Mbps rates without CPU overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB-enabled microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| C8051F340-GQR | Same 8051 core, USB 2.0, but lacks integrated temperature sensor and internal voltage reference; 64 kB flash, 4352 B RAM | Requires external VREF and thermal sensor for precision analog functions | Select when higher flash capacity is needed and analog integration is secondary |
| STM32F072CBT6 | ARM Cortex-M0+, 48 MHz, USB 2.0 FS, 12-bit ADC (1 Msps), 128 kB flash, 16 kB RAM | Higher performance, richer peripheral set, but requires external crystal and more complex USB stack integration | Select for new designs needing ARM ecosystem support, larger memory, or higher ADC resolution |
Compared with C8051F382-GQR, C8051F340-GQR offers greater flash but reduced analog integration, while STM32F072CBT6 provides ARM architecture and higher ADC specs at the cost of increased design complexity and external timing components.
Availability
C8051F382-GQR is available at Aetrix Electronics and suitable for USB peripheral development, industrial sensor nodes, and embedded diagnostic tools requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for C8051F382-GQR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Silicon Laboratories is a fabless semiconductor company specializing in mixed-signal ICs for timing, wireless, MCU, and sensor applications, with emphasis on energy efficiency and system integration.
The C8051F38x family was designed for cost-sensitive, space-constrained USB peripheral applications requiring integrated analog front-ends, robust debug capability, and minimal external components-targeting industrial, medical, and test equipment markets.
FAQ
Does C8051F382-GQR require an external crystal for USB full-speed operation?
No, C8051F382-GQR does not require an external crystal for USB full-speed operation. Its integrated internal oscillator achieves ±0.25% accuracy with clock recovery enabled, meeting USB 2.0 full-speed timing requirements. External crystals are optional and supported for applications needing tighter frequency stability or multi-protocol synchronization.
What is the maximum sampling rate of the 10-bit ADC in C8051F382-GQR?
The 10-bit ADC in C8051F382-GQR achieves up to 500 ksps under optimal conditions-specifically with single-ended input, internal reference, and shortest conversion time settings. Actual throughput depends on configuration (e.g., differential mode, external VREF, or temperature sensor use), but the silicon-limited maximum remains 500 ksps as confirmed in the Rev. 1.5 datasheet.
How many USB endpoints does C8051F382-GQR support, and what types are configurable?
C8051F382-GQR supports eight flexible USB endpoints, including Endpoint 0 (required control) and Endpoints 1–3 (configurable as interrupt, bulk, or isochronous). Endpoint 0 handles standard device requests, while Endpoints 1–3 support double-buffered IN/OUT transfers-enabling simultaneous bidirectional data streams for HID, CDC, or custom class implementations.
Is C8051F382-GQR pin-compatible with other devices in the C8051F38x family?
Yes, C8051F382-GQR shares the same 48-pin TQFP package and pinout with C8051F380-GQR, C8051F384-GQR, and C8051F386-GQR. All four variants use identical pin assignments for power, USB, I/O, reset, and debug signals-allowing drop-in replacement within the same package group where flash size, RAM, or analog features align with design needs.
What debug interface does C8051F382-GQR use, and how many pins are required?
C8051F382-GQR uses the 2-pin C2 debug interface (C2CK and C2D), supporting non-intrusive in-system programming and debugging. This eliminates the need for ICE chips or target pods. The C2 interface allows full-speed breakpoints, register inspection, memory modification, and single-stepping-providing superior visibility compared to traditional 8051 emulators.
C8051F382-GQR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Silicon Labs
- Package/Case:
- 48-TQFP
- Series:
- C8051F38x
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 48 MIPS
- Connectivity:
- EBI/EMI, I2C, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
- Number of I/O:
- 40
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2.25K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.25V
- Data Converters:
- A/D 32x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
C8051F382-GQR FAQ
1.How can I place an order for C8051F382-GQR through Aetrix?
Please submit a Request for Quotation (RFQ) for C8051F382-GQR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for C8051F382-GQR reliable?
The price and inventory of C8051F382-GQR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for C8051F382-GQR is usually 5 days.
3.What payment methods are accepted for C8051F382-GQR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for C8051F382-GQR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for C8051F382-GQR?
C8051F382-GQR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your C8051F382-GQR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for C8051F382-GQR?
For technical support, including C8051F382-GQR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your C8051F382-GQR requirements.
6.How does Aetrix verify that C8051F382-GQR is sourced from the original manufacturer or authorized distributors?
All C8051F382-GQR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that C8051F382-GQR meets industry standards.
7.What is the process for return or replacement of C8051F382-GQR?
All C8051F382-GQR units undergo pre-shipment inspection (PSI). If there is an issue with C8051F382-GQR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The C8051F382-GQR part is unused and in its original packaging.
Return procedure for C8051F382-GQR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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