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• Accuracy:
– ±0.2°C/±1°C (typical/maximum) from +75°C to +95°C
– ±0.5°C/±2°C (typical/maximum) from +40°C to +125°C
– ±1°C/±3°C (typical/maximum) from -40°C to +125°C
• User Selectable Measurement Resolution:
– 0.5°C, 0.25°C, 0.125°C, 0.0625°C
• User Programmable Temperature Limits:
– Temperature Window Limit
– Critical Temperature Limit
• User Programmable Temperature Alert Output
• Operating Voltage Range:
– 1.7V to 3.6V
• Operating Current:
– 100 μA (typical)
• Shutdown Current:
– 0.2 μA (typical)
The MCP9844 temperature sensor is connected to the ATmega3208 through I
2
C and a GPIO for the user-
configurable event output.
Info: 7-bit I
2
C address: 0x18.
Table 3-7. MCP9844 Connections
MCP9844 Pin ATmega3208 Pin Function Shared Functionality
SDA PA2 TWI0 SDA ATECC608A , BMA253 and
mikroBUS
SCL PA3 TWI0 SCL ATECC608A , BMA253 and
mikroBUS
Event PF2 ASYNC External Interrupt —
3.5.7 BMA253 Acceleration Sensor
The Bosch BMA253 is a low-g acceleration sensor with digital output for measurements of acceleration in three
perpendicular axes.
Additional Features:
• 12-Bit Sensitivity
• User Selectable Acceleration Ranges: ±2g, ±4g, ±8g, ±16g
• On-Chip 32 Frame First-In First-Out (FIFO)
• Motion Triggered Interrupts:
– New Data
– Any Motion Detection
– Single/Double Tap Sensing
– Orientation Recognition
– Flat Detection
– Low/High-g Detection
– Inactivity Detection
• Operating Voltage Range: 1.62V to 3.6V
Hardware User Guide
©
2020 Microchip Technology Inc.
User Guide
DS50002956A-page 19