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Analog Devices Inc. ADUC814BRUZ-REEL
- Part No.:
- ADUC814BRUZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADUC814BRUZ-REEL.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,666
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Product details
Overview
ADUC814BRUZ-REEL from Analog Devices is a fully integrated MicroConverter® combining a 12-bit, 247 kSPS multichannel ADC, dual 12-bit DACs, 8052-compatible MCU core, and on-chip Flash/EE memory in a single 28-lead TSSOP package. It delivers precision data acquisition and embedded control for laser power regulation, battery-powered sensor nodes, and industrial system monitoring at −40°C to +125°C.
For engineers reviewing the ADUC814BRUZ-REEL datasheet, ADUC814BRUZ-REEL pinout, ADUC814BRUZ-REEL application, or ADUC814BRUZ-REEL equivalent, key selection criteria include its 247 kSPS ADC sampling rate, dual 12-bit DAC settling time (15 µs), 8 kB Flash/EE program memory, 3 V/5 V operation, and integrated temperature monitor (±1.5°C accuracy).
Technical Context
The ADUC814BRUZ-REEL integrates an 8052-based MCU core with on-chip PLL generating up to 16.78 MHz clock from a 32.768 kHz crystal, enabling programmable core frequencies from 131.1 kHz to 16.78 MHz via CD2–0 bits in PLLCON. Its ADC supports high-speed data capture mode and factory-calibrated offset/gain error (≤5 LSB max at 2.5 V reference).
Dual 12-bit DACs operate with 0 to VREF or 0 to VDD output ranges, ±3 LSB relative accuracy, and guaranteed monotonicity. On-chip peripherals include UART, SPI/I²C-compatible serial I/O, three 16-bit timer/counters, watchdog timer, power supply monitor with four selectable trip points (2.63 V to 4.63 V), and RTC-capable time interval counter.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC Resolution | 12-bit with 247 kSPS max sampling rate; enables high-fidelity analog signal digitization in compact embedded systems. |
| DAC Resolution & Settling | Dual 12-bit DACs with 15 µs full-scale settling time to ±½ LSB; suitable for closed-loop bias control and precision waveform generation. |
| Memory | 8 kB Flash/EE program memory + 640 bytes Flash/EE data memory + 256 bytes RAM; supports secure firmware updates and nonvolatile calibration storage. |
| Operating Voltage | 2.7–3.3 V or 4.5–5.5 V supply range; allows direct integration into both low-power battery and standard 5 V industrial systems. |
| Power Consumption | 3 mA @ 3 V / 2.1 MHz core clock; 15 µA in power-down mode with 32 kHz oscillator active; enables multi-year battery life in remote sensors. |
| Temperature Range | −40°C to +125°C specified operation; qualified for under-hood automotive, base station, and industrial harsh-environment deployment. |
| Reference Accuracy | 2.5 V internal band gap reference with ±2.5% accuracy and 100 ppm/°C tempco; eliminates need for external precision reference in cost-sensitive designs. |
Pinout & Package
ADUC814BRUZ-REEL is housed in a 28-lead TSSOP package (4.4 mm × 9.7 mm) with exposed pad for thermal performance. Pin functions are validated per Analog Devices Rev. A datasheet Figure 2 and Table 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DGND (Pin 1) | Digital Ground Reference | Common return path for digital I/O and MCU logic; internally shorted to AGND for simplified PCB layout. |
| DLOAD (Pin 2) | Debug/Download Control | Pulled high at power-on to enter serial download mode; doubles as emulation I/O during debug-must remain stable during execution. |
| P3.0/RxD (Pin 3) | UART Receive Input | Asynchronous serial data input; also functions as synchronous data I/O in SPI/I²C modes. |
| P3.1/TxD (Pin 4) | UART Transmit Output | Asynchronous serial data output; serves as synchronous clock output in UART/SPI configurations. |
| P1.6/ADC4/DAC0 (Pin 20) | Analog Input / DAC Output | Configurable as 4th ADC channel input or DAC0 output; enables shared pin usage for mixed-signal flexibility. |
| P1.7/ADC5/DAC1 (Pin 21) | Analog Input / DAC Output | Configurable as 5th ADC channel input or DAC1 output; supports simultaneous acquisition and actuation on same pin. |
| VREF (Pin 17) | Reference Input/Output | Provides 2.5 V internal reference or accepts 1.0–VDD external reference; decoupling required for <80 ms power-on stabilization. |
| CREF (Pin 16) | Reference Capacitor Terminal | Connects to 0.1 µF capacitor for internal reference stability; critical for achieving ±2.5% VREF accuracy and low-noise ADC performance. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-Calibrated ADC | Offset and gain errors ≤5 LSB max after calibration; reduces need for system-level trimming in production test. |
| Integrated Temperature Monitor | ±1.5°C accuracy over full temperature range; provides die temperature sensing without external sensor or compensation code. |
| In-Circuit Serial Download | No external hardware required; UART-based programming and debug supported by on-chip factory firmware. |
| Programmable Power Modes | Normal, Idle, and Power-Down modes with sub-20 µA current draw; enables adaptive energy management in portable instruments. |
| Secure Flash Memory | Three-level security (Lock, Secure, Serial Safe) for 8 kB program and 640 B data Flash/EE; prevents unauthorized firmware extraction or modification. |
| Multi-Protocol Serial I/O | UART, SPI, and I²C-compatible interfaces on shared pins; simplifies host communication without additional level-shifting or protocol converters. |
Applications
| Laser Power Control | Smart Sensor Node |
|---|---|
|
Use Scenario: Real-time feedback loop adjusting laser diode bias current based on photodiode output in optical transceivers. IC Role / Device Role / Timing Role: ADC digitizes photodiode voltage; DAC drives laser bias; MCU executes PID algorithm at 100 Hz update rate. Use Value: 12-bit ADC resolution (610 µV LSB @ 2.5 V) resolves sub-mA current changes; dual DACs enable independent bias and modulation control. |
Use Scenario: Battery-powered environmental sensor collecting temperature, humidity, and pressure with local processing and wireless upload. IC Role / Device Role / Timing Role: ADC reads analog sensor outputs; temperature monitor self-calibrates; MCU manages sleep/wake cycles and data formatting. Use Value: 15 µA power-down current extends 10-year battery life; on-chip 2.5 V reference ensures consistent ADC accuracy across supply voltage decay. |
| Base Station PA Bias Control | Precision System Monitor |
|
Use Scenario: Closed-loop adjustment of RF power amplifier quiescent current to maintain linearity and efficiency across temperature drift. IC Role / Device Role / Timing Role: ADC monitors PA collector current and junction temperature; DAC sets gate voltage; UART reports status to baseband processor. Use Value: −40°C to +125°C operation ensures reliability in outdoor enclosures; factory-calibrated ADC/DAC matching minimizes trim components. |
Use Scenario: Embedded health monitor tracking supply rail voltages, board temperature, and analog subsystem integrity in medical or test equipment. IC Role / Device Role / Timing Role: ADC measures multiple rails; PSM detects undervoltage events; WDT resets MCU on software hang; RTC timestamps faults. Use Value: Four programmable PSM trip points (2.63 V–4.63 V) cover diverse rail requirements; 100-year Flash retention stores lifetime calibration data. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUC7024BCPZ-RL7 | Higher performance: 1 MSPS 12-bit ADC, 32-bit ARM7 core, 62 kB Flash, but larger 40-lead LFCSP package and higher power (12 mA typical). | Better suited for complex real-time control with floating-point math; less optimal for ultra-low-power or space-constrained designs. | Select ADUC7024BCPZ-RL7 when >247 kSPS sampling or ARM instruction compatibility is required; ADUC814BRUZ-REEL remains preferred for 8051 legacy code reuse and minimal footprint. |
| MAX11270ETJ+ | Standalone 24-bit delta-sigma ADC with integrated PGA and reference; no MCU, DAC, or Flash-requires external controller. | Targeted at high-precision measurement only (e.g., weigh scales, analytical instruments); lacks embedded control capability. | Choose MAX11270ETJ+ when 24-bit resolution and <10 ppm INL outweigh need for on-chip processing; ADUC814BRUZ-REEL provides integrated signal chain + control in one die. |
Compared with ADUC814BRUZ-REEL, ADUC7024BCPZ-RL7 offers greater compute headroom but increases BOM count and layout area, while MAX11270ETJ+ delivers superior resolution at the cost of requiring external firmware development and component integration.
Availability
ADUC814BRUZ-REEL is available at Aetrix Electronics and suitable for optical networking, base station systems, and precision instrumentation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for ADUC814BRUZ-REEL 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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADuC814 product line delivers integrated data acquisition microcontrollers targeting embedded sensor conditioning, closed-loop control, and battery-operated instrumentation where size, power, and analog precision are critical.
FAQ
What is the maximum ADC sampling rate supported by the ADUC814BRUZ-REEL?
The ADUC814BRUZ-REEL supports a maximum ADC sampling rate of 247 kSPS in high-speed data capture mode. This rate is achievable with the on-chip PLL configured for 16.78 MHz core clock and proper ADC control register settings (ADCCON1/2). At lower clock speeds or in pipelined mode, the effective rate may be reduced to maintain linearity specifications.
Does the ADUC814BRUZ-REEL include internal Flash memory for program storage?
Yes, the ADUC814BRUZ-REEL integrates 8 kbytes of on-chip Flash/EE program memory with 100-year data retention and 100,000-cycle endurance. This memory supports in-circuit serial download via UART without external hardware and includes three levels of security (Lock, Secure, Serial Safe) to protect intellectual property in deployed ADUC814BRUZ-REEL units.
Can the ADUC814BRUZ-REEL operate from a 3 V supply, and what is its typical current draw?
Yes, the ADUC814BRUZ-REEL is fully specified for 2.7–3.3 V operation. At 3 V supply and 2.1 MHz core clock, its typical DVDD current is 2 mA, dropping to 15 µA in power-down mode with the 32 kHz oscillator running. These values are confirmed in the Rev. A datasheet Table 1 under "Power Supply Currents" for normal and power-down modes.
How many analog input channels does the ADUC814BRUZ-REEL support, and what is their resolution?
The ADUC814BRUZ-REEL supports six analog input channels (AIN0–AIN5) multiplexed into a single 12-bit successive-approximation ADC. Each channel achieves 12-bit resolution with integral nonlinearity ≤2 LSB max (A-grade) or ≤1 LSB max (B-grade) when using the 2.5 V internal reference, as verified in the DC accuracy section of the Rev. A datasheet.
Is the ADUC814BRUZ-REEL pin-compatible with other members of the ADuC8xx family?
No, the ADUC814BRUZ-REEL is not pin-compatible with other ADuC8xx variants such as ADUC831 or ADUC832. Its 28-lead TSSOP package and specific pin assignments-including dual-function pins like P1.6/ADC4/DAC0 and P1.7/ADC5/DAC1-are unique to the ADuC814 family. Migration requires PCB redesign and firmware adaptation due to differences in peripheral mapping and memory architecture.
ADUC814BRUZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- Series:
- MicroConverter® ADuC8xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 8052
- Core Size:
- 8-Bit
- Speed:
- 16.78MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- POR, PSM, Temp Sensor, WDT
- Number of I/O:
- 17
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 640 x 8
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 6x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
ADUC814BRUZ-REEL FAQ
1.How can I place an order for ADUC814BRUZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUC814BRUZ-REEL 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 ADUC814BRUZ-REEL reliable?
The price and inventory of ADUC814BRUZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUC814BRUZ-REEL is usually 5 days.
3.What payment methods are accepted for ADUC814BRUZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUC814BRUZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUC814BRUZ-REEL?
ADUC814BRUZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUC814BRUZ-REEL 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 ADUC814BRUZ-REEL?
For technical support, including ADUC814BRUZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUC814BRUZ-REEL requirements.
6.How does Aetrix verify that ADUC814BRUZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADUC814BRUZ-REEL 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 ADUC814BRUZ-REEL meets industry standards.
7.What is the process for return or replacement of ADUC814BRUZ-REEL?
All ADUC814BRUZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADUC814BRUZ-REEL, 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 ADUC814BRUZ-REEL part is unused and in its original packaging.
Return procedure for ADUC814BRUZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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