Overview
The ADUC7129BSTZ126-RL is a sophisticated microcontroller from Analog Devices Inc., part of the ADuC7xxx MicroConverter series. This device integrates a 16-bit/32-bit ARM7TDMI RISC microcontroller, a 12-bit analog-to-digital converter (ADC), and a digital-to-analog converter (DAC) with a Direct Digital Synthesis (DDS) capability. It is packaged in an 80-lead LQFP (12x12 mm) and operates over a temperature range of -40°C to +125°C. The microcontroller is designed to provide a high level of integration, making it suitable for various industrial, medical, and automotive applications where both analog and digital signal processing are required.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Microcontroller Core | ARM7TDMI RISC | - | 16-bit/32-bit, up to 41 MIPS peak performance |
| Flash/EE Memory | 126 kB (63K x 16) | - | Endurance: 10,000 cycles, Data Retention: 20 years at TJ = 85°C |
| ADC | 12-bit, 1 MSPS | - | Up to 14 single-ended or differential analog input channels |
| DAC | DDS DAC | - | Differential line driver output, voltage swing: 0.33 × VREF ± 0.2 × VREF |
| Internal Clock | 41.78 MHz | - | Generated from on-chip oscillator and PLL |
| Power Supply | 3.3 V | - | Analog power supply should be separated from IOGND and DGND |
| Package | 80-lead LQFP (12x12 mm) | - | - |
| Operating Temperature | -40°C to +125°C | - | - |
Key Features
- Analog I/O: Multichannel, 12-bit, 1 MSPS ADC with up to 14 single-ended or differential analog input channels.
- DAC Capability: DDS DAC with differential line driver output, capable of transmitting a sine wave or a voltage output determined by the DACDAT MMR.
- Microcontroller Core: 16-bit/32-bit ARM7TDMI RISC core offering up to 41 MIPS peak performance.
- Memory: 126 kB of nonvolatile Flash/EE memory with endurance of 10,000 cycles and data retention of 20 years at TJ = 85°C.
- Internal Voltage Reference: Low drift band gap reference with an output voltage of 2.5 V and accuracy of ±2.5 mV at TA = 25°C.
- Watchdog Timer and Reset: Watchdog timer with a timeout period of 0 ms to 512 sec and glitch immunity on the RST pin.
Applications
The ADUC7129BSTZ126-RL is versatile and can be used in a variety of applications, including:
- Industrial Control Systems: For monitoring and controlling industrial processes where both analog and digital signal processing are necessary.
- Medical Devices: In medical equipment that requires precise analog-to-digital and digital-to-analog conversions, such as patient monitoring systems.
- Automotive Systems: For automotive applications that need robust and reliable microcontrollers with integrated ADC and DAC capabilities.
- Measurement and Testing Equipment: In devices that require high precision in measuring and testing various parameters.
Q & A
- What is the microcontroller core used in the ADUC7129BSTZ126-RL?
The microcontroller core is a 16-bit/32-bit ARM7TDMI RISC core.
- How many analog input channels does the ADC support?
The ADC supports up to 14 single-ended or differential analog input channels.
- What is the internal clock frequency generated by the on-chip oscillator and PLL?
The internal clock frequency is 41.78 MHz.
- What is the operating temperature range of the ADUC7129BSTZ126-RL?
The operating temperature range is -40°C to +125°C.
- What type of package does the ADUC7129BSTZ126-RL come in?
The device is packaged in an 80-lead LQFP (12x12 mm).
- What is the endurance and data retention of the Flash/EE memory?
The Flash/EE memory has an endurance of 10,000 cycles and data retention of 20 years at TJ = 85°C.
- Does the device have a watchdog timer?
Yes, the device includes a watchdog timer with a timeout period of 0 ms to 512 sec.
- What is the accuracy of the internal voltage reference?
The internal voltage reference has an accuracy of ±2.5 mV at TA = 25°C.
- Can the device operate in differential mode?
Yes, the ADC can operate in both single-ended and differential input modes.
- What are some typical applications of the ADUC7129BSTZ126-RL?
Typical applications include industrial control systems, medical devices, automotive systems, and measurement and testing equipment.
