Precision Analog Microcontroller with Chemical Sensor Interface Data Sheet ADuCM355 FEATURES Security and safety Hardware cyclic redundancy check (CRC) with Analog input/output programmable polynomial generator (refer to the 16-bit, 400 kSPS ADC ADuCM355 Hardware Reference Manual) Voltage, current, and impedance measurement capability Read and write protection of user flash Internal and external current and voltage channels On-chip peripherals Ultralow leakage switch matrix and input mux 2 UART, I C, and SPI serial input/output Input buffers, PGA Up to 17 GPIO pins Voltage DACs External interrupt option Two dual output voltage DACs General-purpose, wake-up, and watchdog timers Output range: 0.2 V to 2.4 V (2.2 V voltage potential to Power sensor) for 12-bit outputs 2.8 V to 3.6 V supply and active measurement range Two bias potentiostat and TIA amplifiers Power supply monitor Ultralow power, 1 A per amplifier Active current consumption: 30 A/MHz for digital section One high speed 12-bit voltage DAC Hibernate with bias to external sensor: 8.5 A Output range to sensor: 607 mV to +607 mV Shutdown mode with no SRAM retention: 2 A High speed TIA for impedance measurements Package and temperature range Programmable gain amplifier on output 6 mm 5 mm, 72-lead LGA package Amplifiers, accelerators, and references Fully specified for 40C to +85C ambient operation Two low power, low noise amplifiers Suitable for potentiostat bias in electrochemical sensing APPLICATIONS Two low power, low noise TIAs Gas detection Suitable for measuring sensor current output in the Food quality 0.00005 A to 3000 A range Environmental sensing (air, water, and soil) Programmable load and gain resistors Blood glucose meters Analog hardware accelerators Life sciences and biosensing analysis Digital waveform generator (refer to the ADuCM355 Bioimpedance measurements Hardware Reference Manual) General amperometry, voltammetry, and impedance DFT and digital filters spectroscopy functions 2.5 V and 1.82 V on-chip, precision voltage references Internal temperature sensor, 2C accurate Impedance measurement range of <1 to 10 M, SIMPLIFIED FUNCTIONAL BLOCK DIAGRAM 0.016 Hz to 200,000 Hz OSCILLATORS Voltammetry scan rate up to 2000 steps per second POTENTIOSTAT 0: AMPLIFIERS AND DAC TIMERS: ARM Microcontroller WATCHDOG, Cortex-M3 CURRENT WAKE-UP, 26 MHz Arm Cortex-M3 processor CHANNELS GENERAL- SRAM 16-BIT ADC PURPOSE Serial wire port supports code download and debugging FLASH MEMORY VOLTAGE CHANNELS 128 kB flash/64 kB of SRAM PORs GPIOs LDOs INTERNAL WITH CHANNELS EXTERNAL VOLTAGE INTERRUPTS SWD REFERENCES TEMPERATURE CHANNELS POTENTIOSTAT 1: IMPEDANCE ENGINE AMPLIFIERS AND DAC AMPLIFIERS AND DAC Figure 1. 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Trademarks and registered trademarks are the property of their respective owners. 16674-001ADuCM355 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Absolute Maximum Ratings ......................................................... 19 Applications ...................................................................................... 1 Thermal Resistance .................................................................... 19 Simplified Functional Block Diagram ........................................... 1 ESD Caution ............................................................................... 19 Revision History ............................................................................... 2 Pin Configuration and Function Descriptions .......................... 20 Functional Block Diagram .............................................................. 3 Typical Performance Characteristics .......................................... 24 General Description ......................................................................... 4 Applications Information ............................................................. 26 Specifications .................................................................................... 5 Recommended Circuit and Component Values ................... 26 Microcontroller Electrical Specifications .................................. 5 Outline Dimensions ....................................................................... 28 RMS Noise Resolution of ADC ................................................ 15 Ordering Guide .......................................................................... 28 Timing Specifications ................................................................ 16 REVISION HISTORY 4/2020Rev. B to Rev. C Changes to Figure 7 ....................................................................... 20 Change to Figure 19 ....................................................................... 27 Change to Table 8 ........................................................................... 22 Added Figure16 and Figure 17 Renumbered Sequentially ...... 25 6/2019Rev. A to Rev. B Changes to Figure 19 ..................................................................... 27 Changes to Figure 2 .......................................................................... 3 Changes to Table 1 ........................................................................... 9 4/2019Rev. 0 to Rev. A Changes to RMS Noise Resolution of ADC Section Changes to Table 8 ......................................................................... 21 and Table 3 ...................................................................................... 15 3/2019Revision 0: Initial Version Rev. C Page 2 of 28