ADUC7126BSTZ126 precision analog microcontroller, 12-bit analog I/O, large memory, ARM7TDMI MCU with enhanced IRQ handler
The ADuC7124/ADuC7126 are fully integrated 1 MSPS, 12-bit data acquisition systems that integrate a high performance multichannel ADC, 16-bit/32-bit MCU, and Flash/EE memory in a single chip. The ADC has up to 12 single-ended inputs. There are also four ADC input channels that can be multiplexed with the output pins of the four DACs. The ADC can operate in single-ended mode or differential input mode with an ADC input voltage range of 0 V to VREF. A low drift bandgap reference, temperature sensor, and voltage comparator complete the ADC's peripheral setup. The DAC output range can be programmed to one of three voltage ranges. The DAC output has an enhanced feature to maintain its output voltage during watchdog or software reset timing.
These devices generate an internal high-frequency clock signal of 41.78MHz through an on-chip oscillator and phase-locked loop (PLL). This clock signal is relayed through a programmable clock divider, where the MCU core clock operating frequency is generated. The core of the microcontroller is ARM7TDMI®, a 16-bit/32-bit RISC machine with peak performance up to 41 MIPS. 32 KB SRAM and 126 KB of non-volatile Flash/EE memory are integrated on-chip. The ARM7TDMI core treats all memory and registers as a linear array. The ADuC7124 contains an advanced interrupt controller. This vector interrupt controller (VIC) can assign a priority to each interrupt. It also supports nested interrupts, allowing up to 8 levels of nesting per IRQ and FIQ. If you combine IRQ and FIQ interrupt sources, you can support a total of 16 levels of nested interrupts. On-chip factory firmware is supported via the UART serial interface port or I2
The C port is available for online download and supports non-intrusive emulation via the JTAG interface. These features are integrated in the low-cost QuickStart™ development system that supports this MicroConverter® family. The device contains a 16-bit PWM that provides six output signals. For ease of communication, the device contains two I's2
C channels, which can be configured independently as master or slave mode. An SPI interface that supports both master-slave modes is also provided. There are also 2 UART channels, each with a configurable 16-bit FIFO with receive and transmit buffers.
These devices operate over a voltage range of 2.7 V to 3.6 V and are specified over the industrial temperature range of −40°C to +125°C. At 41.78 MHz, it typically consumes 120 mW. The ADuC7124 is available in 64-lead LFCSP and 80-lead LFQFP packages.apply
- Industrial control and automation systems
- Intelligent sensors, precision instruments
- Base station systems, fiber optic networks
- Patient monitoring
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