ADuCM362/ADuCM363, 32-Bit ARM® Cortex®-M

By Analog Devices Inc 48

ADuCM362/ADuCM363, 32-Bit ARM® Cortex®-M

ADI’s ADuCM362/ADuCM363 are fully integrated, 3.9 kSPS, 24-bit data acquisition systems that incorporate dual, high performance, multichannel Σ-Δ ADCs, 32-bit ARM Cortex-M3 processors, and Flash/EE memory on a single chip. These devices are designed for direct interfacing to external precision sensors in both wired and battery-powered applications. ADuCM362/ADuCM363 sharel the same features, except the AduCM362 has dual 24-bit Σ-Δ ADCs whereas the AduCM363 has only one.

These devices contain an on-chip 32 kHz oscillator and an internal 16 MHz high frequency oscillator. The high frequency oscillator is routed through a programmable clock divider from which the operating frequency of the processor core clock is generated. The maximum core clock speed is 16 MHz; this speed is not limited by operating voltage or temperature.

On-chip factory firmware supports in-circuit serial download via a serial wire interface (2-pin JTAG system) and UART; non-intrusive emulation is also supported via the serial wire interface. These features are incorporated into a low cost QuickStart™ development system that supports this precision analog micro-controller family. The ADuCM362/ADuCM363 operate from an external 1.8 V to 3.6 V voltage supply and are specified over an industrial temperature range of -40°C to 125°C and come in a 48-LFCSP package.

Features
  • Core processor: ARM Cortex-M3 
  • Core Size: 32-bit reduced instruction set computer (RISC) architecture
  • Speed/clocking options: 16 MHz with 8-way programmable divider
  • Connectivity: I2C, SPI, UART/USART
  • Peripherals: DMA, POR, PWM, WDT
  • Number of I/O: 19
  • Analog input/output
  • Single/dual 24-bit ADCs
  • Programmable ADC output rate (3.5 Hz to 3.906 kHz)
  • Simultaneous 50 Hz/60 Hz noise rejection 
  • At 50 SPS continuous conversion mode
  • At 16.67 SPS single conversion mode
  • Program memory size: 128 KB (128 K x8)
  • Program memory type: Flash
  • Ram size: 16 K x 8
  • Voltage-supply: 2.8 V to 3.6 V
  • Data converters: A/D 12 x 24 b, D/A 1 x 12 b
  • Oscillator type: internal 
  • Operating temperature:  -40°C to 125°C
  • Package/case: 48-WFQFN exposed pad, 48-LFCSP (7 mm x 7 mm)
Applications
  • Industrial automation 
  • Process control
  • Intelligent precision sensing systems
  • 4 mA to 20 mA loop-powered smart sensor systems
  • Medical devices
  • Patient monitoring

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