Overview
The ADUC814BRU, manufactured by Analog Devices Inc., is a highly integrated MicroConverter® that combines a high-performance 12-bit analog-to-digital converter (ADC), an 8-bit microcontroller (MCU), and nonvolatile memory on a single chip. This device is part of the ADuC814 series and is designed for applications requiring precision data acquisition and control. The MCU core is based on the 8052 architecture, ensuring compatibility with 8051 instructions. The device operates from a 3V or 5V supply and is packaged in a 28-pin TSSOP (Thin Shrink Small Outline Package).
Key Specifications
| Parameter | Description |
|---|---|
| Microcontroller Core | 8052-based, compatible with 8051 instructions |
| ADC Resolution | 12-bit, 6-channel, 247 kSPS |
| DACs | Dual 12-bit DACs, 15 µs settling time |
| Memory | 8 kBytes Flash/EE program memory, 640 bytes Flash/EE data memory, 256 bytes RAM |
| Clock Frequency | 16.78 MHz generated from a 32 kHz crystal with on-chip PLL |
| Package | 28-pin TSSOP (0.173", 4.40mm Width) |
| Operating Temperature | −40°C to +125°C |
| Power Supply | 3V or 5V |
| Digital Peripherals | Watchdog timer, time interval counter, three timer/counters, UART, SPI serial port |
Key Features
- High-performance 12-bit ADC with 6 channels and 247 kSPS sampling rate
- Dual 12-bit DACs with 15 µs settling time
- 8052-based MCU core with 8 kBytes Flash/EE program memory, 640 bytes Flash/EE data memory, and 256 bytes RAM
- On-chip PLL generating a high frequency clock of 16.78 MHz from a 32 kHz crystal
- Programmable clock divider and multiple timer/counters
- UART and SPI serial ports for communication
- Power supply monitor, band gap reference, and watchdog timer
- Low power operation with power-saving modes
Applications
- Optical networking—laser power control
- Base station systems—power amplifier bias control
- Precision instruments and smart sensors
- Battery-powered systems and precision system monitors
Q & A
- What is the ADUC814BRU?
The ADUC814BRU is a MicroConverter® from Analog Devices Inc., integrating a 12-bit ADC, an 8-bit MCU, and nonvolatile memory on a single chip.
- What is the resolution and sampling rate of the ADC?
The ADC has a 12-bit resolution and a sampling rate of 247 kSPS.
- What type of MCU core does the ADUC814BRU use?
The MCU core is based on the 8052 architecture, compatible with 8051 instructions.
- What is the memory configuration of the ADUC814BRU?
The device includes 8 kBytes Flash/EE program memory, 640 bytes Flash/EE data memory, and 256 bytes RAM.
- What is the operating temperature range of the ADUC814BRU?
The device operates from −40°C to +125°C.
- What are the key analog features of the ADUC814BRU?
The device includes dual 12-bit DACs, a power supply monitor, and a band gap reference.
- What digital peripherals are available on the ADUC814BRU?
The device includes a watchdog timer, time interval counter, three timer/counters, UART, and SPI serial port.
- What are some typical applications of the ADUC814BRU?
Typical applications include optical networking, base station systems, precision instruments, smart sensors, and battery-powered systems.
- What is the package type of the ADUC814BRU?
The device is packaged in a 28-pin TSSOP (Thin Shrink Small Outline Package).
- How does the ADUC814BRU generate its clock frequency?
The clock frequency is generated from a 32 kHz crystal using an on-chip PLL to produce a high frequency clock of 16.78 MHz.
