AT89C51SND1C-ROTUL Microchip Integrated Circuit (Quad Flat Packages) In Stock
The AT89C51SND1C-ROTUL is an 8-bit 8051-family microcontroller with integrated MP3/WMA audio decoder and USB interface from Microchip Technology. It operates at up to 20 MHz, features a 16-bit address bus, built-in ADC, and is housed in an 80-pin TQFP package. Ideal for portable audio players, USB audio devices, and embedded multimedia applications.
- Manufacturer
- Microchip
- Package
- Quad Flat Packages
- Pin Count
- 80
- Lifecycle
- ACTIVE
- Datasheet
- AT89C51SND1C-ROTUL Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit 8051 CPU core up to 20 MHz clock frequency
- Integrated MP3 and WMA audio decoder engine
- 16-bit address bus with 8-bit external data bus
- Built-in ADC for analog sensor integration
- USB interface for PC connectivity and audio streaming
- 80-pin TQFP package for full-featured embedded audio designs
Applications
The AT89C51SND1C-ROTUL is purpose-built for portable audio players, USB audio adapters, and embedded music systems that need onboard MP3 or WMA decoding without an external DSP. Its 8051 core running at up to 20 MHz handles control tasks while the audio decoder operates concurrently, reducing firmware complexity in consumer electronics. The device is also used in educational embedded systems platforms and legacy industrial controllers that require a cost-effective 8-bit microcontroller with audio output capability.
Specifications
| YTEOL | 7 |
| Has ADC | YES |
| Address Bus Width | 16 |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | 8051 |
| Clock Frequency-Max | 20MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| External Data Bus Width | 8 |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | S-PQFP-G80 |
| Low Power Mode | YES |
| Number of External Interrupts | 2 |
| Number of I/O Lines | 44 |
| Number of Serial I/Os | 1 |
| Number of Timers | 2 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 8 |
| PWM Channels | NO |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | FLATPACK |
| RAM (bytes) | 2304 |
| ROM (words) | 65536 |
| ROM Programmability | FLASH |
| Speed | 40MHz |
| Supply Current-Max | 17mA |
| Supply Voltage-Max | 3.3V |
| Supply Voltage-Min | 3V |
| Supply Voltage-Nom | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Form | GULL WING |
| Terminal Position | QUAD |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER |
| ## AT89C51SND1C-ROTUL Alternates Showing results | Image |
| Package | Quad Flat Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.31.00.15 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for AT89C51SND1C-ROTUL:
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Frequently Asked Questions
What maximum clock frequency does the AT89C51SND1C-ROTUL support, and how does this affect real-time audio decoding performance?
The AT89C51SND1C-ROTUL runs at up to 20 MHz, which is sufficient for real-time MP3 and WMA audio decoding when the dedicated hardware decoder handles the codec processing. The 8051 core at 20 MHz manages file system navigation, USB transfers, and user interface tasks concurrently, enabling smooth audio playback without dedicated DSP at 128 kbps bitrates.
How does the 80-pin TQFP package of the AT89C51SND1C-ROTUL support peripheral expansion in a portable audio design?
The 80-pin TQFP provides access to the full 16-bit address bus, 8-bit external data bus, ADC inputs, USB interface, and multiple I/O ports in a surface-mount package measuring approximately 14×14 mm. This allows designers to connect external Flash memory, an LCD display, and a DAC output in a single compact board without requiring additional bus expanders.
When is the AT89C51SND1C-ROTUL a suitable alternative to a 32-bit ARM microcontroller for USB audio applications?
The AT89C51SND1C-ROTUL is a cost-effective choice when the application only requires 8-bit processing at 20 MHz with integrated audio decoding, and the developer prefers the mature 8051 toolchain and instruction set. For low-volume consumer audio devices that do not need floating-point math or RTOS features, the 8-bit architecture reduces BOM cost compared to a 32-bit ARM Cortex-M device with external audio codec.
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