Analog Devices ADuCM356

Reference Manual ADuCM356
ADUCM356 OVERVIEW
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MAIN FEATURES OF THE ADUCM356
Analog-to-Digital Converter (ADC)
The device has the following ADC features:
► 16-bit multichannel successive approximation register (SAR)
ADC.
► Up to 34 input channels, programmable via input mux.
► Low noise transimpedance amplifiers (TIAs) for accurate current
measurements.
► Low noise programmable-gain amplifier (PGA) for accurate
measurement of small input-voltage signals.
► Internal 1.82 V and 2.5 V voltage reference sources.
► Hardware accelerators, including digital discrete Fourier trans-
form (DFT) calculations.
Digital-to-Analog Converters (DACs)
The device has the following DACs related features:
► Low-power, low noise amplifiers designed for biasing external
electrochemical sensors.
► Two dual output, low-power DACs designed to set external
sensor bias voltage and to support pulse and voltammetry elec-
trochemical techniques.
► Programmable switch configuration to support interfacing to a
variety of sensors and external pins.
► High bandwidth DAC and excitation amplifier designed to gener-
ate an excitation signal for impedance measurements up to 200
kHz.
Communication
The ADuCM356 contains the following communication features:
► Industry-standard, 16450/16550 universal asynchronous receiv-
er/transmitter (UART) peripheral, and support for direct memory
access (DMA). Also supports wake up from hibernate mode
through the UART receive input.
► I
2
C, 2-byte transmit and receive first in, first out (FIFOs) for the
initiator and the target, and support for DMA.
► Two serial-peripheral interfaces (SPIs) with controller and periph-
eral, separate 4-byte receive and transmit FIFOs, and receive
and transmit DMA channels.
► Multiple general-purpose input/output (GPIO) pins.
Processor
The processor of the ADuCM356 operates using the following:
► Arm
®
Cortex
™
-M3 processor, operating from an internal 26 MHz
system clock.
► 256 kB Flash/EE memory, 64 kB static random-access memory
(SRAM) on digital die.
► In circuit programming and debug through a serial wire.
On-Chip Peripherals
The device incorporates the following on-chip peripherals:
► Three general-purpose timers on the digital die. There are two
general-purpose timers on the analog die.
► Wake-up timer on the digital die. There is an optional wake-up
timer also on the analog die.
► Independent watchdog timer on the analog die.
Package
The device is packaged in a 6 mm × 5 mm, 72-lead land grid array
(LGA). The temperature range of the device is −40°C to +85°C.
A low cost development system and a third party compiler and
emulator tool support are included in the ADuCM356 evaluation kit.
Applications
The applications of the ADuCM356 include the following:
► Gas detection.
► Food quality.
► Environmental sensing (air, water, and soil).
► Blood glucose meters.
► Life sciences and biosensing analysis.
► Bioimpedance measurements.
► General amperometry, voltammetry, and impedance.
Memory Organization
The memory organization of the device operates using the follow-
ing:
► Arm Cortex-M3 memory system features include a predefined
memory map, support for bit band operation for atomic opera-
tions, and unaligned data access.
► On-chip peripherals are accessed via memory-mapped registers,
situated in the bit band region.
► User memory size options are 256 kB Flash/EE memory and 64
kB SRAM.
► On-chip kernel for booting device with manufacturer data.