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MCC 128 16-bit Voltage Measurement DAQ HAT for Raspberry Pi Features 8 SE/4 DIFF 16-bit voltage inputs Single-ended and differential input modes 100 kS/s max sample rate (320 kS/s aggregate for stacked boards) Multiple input ranges Onboard sample buffers allow high-speed acquisition External scan clock The MCC 128 is a 16-bit, high-speed voltage measurement DAQ HAT. The MCC 128 is External digital trigger input shown here connected to a Raspberry Pi (not included). Screw terminal connections Stack up to eight MCC HATs Overview onto a single Raspberry Pi The MCC 128 is a voltage HAT (Hardware Attached on Top) board designed for use Software with Raspberry Pi, the most popular single-board computer on the market today. MCC DAQ HAT Library A HAT is an add-on board with a 40W GPIO (general purpose input/output) con- available on GitHub nector that conforms to the Raspberry Pi HAT specification. The MCC 128 HAT provides 8 SE/4 DIFF analog inputs for voltage measurements. Supported Operating Systems Up to eight MCC HATs can be stacked onto one Raspberry Pi. Linux /Raspbian Programming API Sample Rates Raspberry Pi Interface C, C++, Python Single-board: max throughput is The MCC 128 header plugs into the 40-pin 100 kS/s. general purpose I/O (GPIO) connector on a user-supplied Raspberry Pi. The MCC 128 Stacked boards: max throughput is MCC DAQ HAT Library 1 was tested for use with all Raspberry Pi 320 kS/s aggregate . The open-source MCC DAQ HAT Library models with the 40-pin GPIO connector. of commands in C/C++ and Python External Scan Clock allows users to develop applications on HAT configuration A bidirectional clock I/O pin lets users the Raspberry Pi using Linux. HAT configuration parameters are stored pace operations with an external clock The library is available to download from in an on-board EEPROM that allows the signal or with the boards internal scan GitHub. Comprehensive API and hard- Raspberry Pi to automatically set up the clock. Use software to set the direction. ware documentation is available. GPIO pins when the HAT is connected. The MCC DAQ HAT Library supports Digital Trigger Stackable HATs operation with multiple MCC DAQ HATs The external digital trigger input is Up to eight MCC HAT boards can be running concurrently. software-configurable for edge or level stacked onto a single Raspberry Pi. Mul- Console-based and user interface (UI) sensitive, rising or falling edge, or high tiple boards can be synchronized using example programs are available for each or low level. external clock and trigger input options. API. Users can mix and match MCC HAT Power models in the stack. The MCC 128 is powered with 5 V pro- vided by the Raspberry Pi through the Analog Input GPIO header connector. The MCC 128 provides 8 single-ended or 4 differential analog inputs. The input range is selectable for 10 V, 5 V, 2 V, or 1 V. 1 Rate achieved using a Raspberry Pi 3 B+. Measurement ComputingMeasurement Computing (508) 946-5100(508) 946-5100 info mccdaq.cominfo mccdaq.com mccdaq.commccdaq.com 11MCC 128 Block Diagram +3.3V Power 5V +15V Supplies -15V Multiplexer / ADC Ampli er Board Raspberry Pi SPI Microcontroller Address Header Matching Scan Clock Digital Trigger I2C HAT EEPROM OEM Version Stackable The MCC 128-OEM is designed with (unpopulated) header Connect up to eight MCC DAQ HATs onto a single connectors instead of screw terminals, and is functionally Raspberry Pi. Onboard jumpers identify each board in the equivalent to the standard version. The MCC 128-OEM stack. Use an external clock and connect the trigger inputs accepts 16 and 110 0.1 in. spacing header connectors. to synchronize the acquisition. Measurement Computing (508) 946-5100 info mccdaq.com mccdaq.com 2 Screw Terminals