MIKROE-2273

MIKROE-2273 Datasheet

PID MIKROE-2273 Weight 30 g Condition New product Thermostat click carries the MAX7502 IC digital temperature sensor, that also provides an overtemperature alarm/interrupt/shutdown output, and an SN74LVC1G126 single bus buffer from Texas Instruments. MAX7502 IC can measure temperatures from -25°C to +100°C, within the accuracy of ±1.5°C. The G6D PCB power relay can control up to 5A, 250V AC/30V DC loads.

Part	Datasheet
MIKROE-2273	MIKROE-2273 (pdf)

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Thermostat click PID MIKROE-2273 Weight 30 g Condition New product Thermostat click carries the MAX7502 IC digital temperature sensor, that also provides an overtemperature alarm/interrupt/shutdown output, and an SN74LVC1G126 single bus buffer from Texas Instruments. MAX7502 IC can measure temperatures from -25°C to +100°C, within the accuracy of ±1.5°C. The G6D PCB power relay can control up to 5A, 250V AC/30V DC loads. Table of contents Temperature range MAX7502 temperature sensor Low power consumption Enable/disable thermostat functionality Application Key features If you need a temperature sensor and relay in one device, you should look no further than Thermostat click. It can be used to measure environmental temperature and to directly switch ON/OFF cooling and heating devices, performing all the functions of a thermostat. Thermostat click carries the MAX7502 IC digital temperature sensor, that also provides an overtemperature alarm/interrupt/shutdown output, and an SN74LVC1G126 single bus buffer from Texas Instruments. MAX7502 IC can measure temperatures from -25°C to +100°C, within the accuracy of ±1.5°C. The G6D PCB power relay can control up to 5A, 250V AC/30V DC loads. The click runs on either 3.3V or 5V power supply and communicates with the target MCU over I2C interface. Temperature range The IC can measure temperatures from -25°C to +100°C, within the accuracy of ±1.5°C. MAX7502 temperature sensor MAX7502 temperature sensor measures temperature, converts the data into digital form using a sigma-delta ADC, and communicates the conversion results through an I2C-compatible 2-wire serial interface. It accepts standard I2C commands to read the data, set the overtemperature alarm trip thresholds, and configure other characteristics. Low power consumption The MAX7502 temperature sensor typically uses only around 250 µA, and in shutdown mode around 3 µA. With such low power consumption, it is very suitable for home automation devices. Enable/disable thermostat functionality There is also the TE thermostat enable pin on the mikroBUS pin socket for enabling high level or disabling low of the thermostat functionality. This is accomplished via the SN74LVC1G126 single bus buffer with 3-state output IC, which serves as an electronic switch between temperature sensor IC output pin and the relay driver circuit. This way the relay can be permanently disconnected from the sensor IC output. A feature like this can be useful when the sensor IC is only used as an measuring device, or if the thermostat needs to be temporarily disabled. Application HVAC systems, heating systems, cooling systems, simple interrupt ON/OFF temp control, hysteresis controller, etc. Key features • MAX7502 temperature sensor o ±1.5°C max temperature accuracy o 3µA typ shutdown supply current o Overtemperature alarm output • SN74LVC1G126 single bus buffer o Designed for to VCC operation o Low Power Consumption, Max ICC • Onboard screw terminal • I2C interface • Either 3.3V or 5V power supply SPECIFICATION Product Type Applications On-board modules Key Features Key Benefits Interface Power Supply Compatibility Click board size Temperature / Humidity HVAC systems, heating systems, cooling systems, simple interrupt ON/OFF temp control, hysteresis controller, etc. MAX7502 IC digital temperature sensor MAX7502 temperature sensor, SN74LVC1G126 single bus buffer, G6D PCB power relay, I2C interface, either 3.3V or 5V power supply, Temperature sensor and relay in one device, it can measure environmental temperature and directly switch ON/OFF cooling and heating devices I2C 3.3V or 5V mikroBUS L x mm Pinout diagram This table shows how the pinout on Thermostat click corresponds to the pinout on the mikroBUS socket the latter shown in the two middle columns . Notes mikroBUStm Notes Not connected NC 1 AN PWM 16 NC Not connected Hardware Reset for MAX7502 RST# 2 RST INT 15 NC Not connected Thermostat enable TE 3 CS TX 14 NC Not connected Not connected NC 4 SCK RX 13 NC Not connected Not connected NC 5 MISO SCL 12 SCL Serial Data Input/Output Line Not connected NC 6 MOSI SDA 11 SDA Serial Data Clock Input Power supply +3.3V 7 +3.3V +5V 10 +5V Power supply Ground GND 8 GND 9 GND Ground

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Thermostat click

PID MIKROE-2273 Weight 30 g Condition New product Thermostat click carries the MAX7502 IC digital temperature sensor, that also provides an overtemperature alarm/interrupt/shutdown output, and an SN74LVC1G126 single bus buffer from Texas Instruments. MAX7502 IC can measure temperatures from -25°C to +100°C, within the accuracy of ±1.5°C. The G6D PCB power relay can control up to 5A, 250V AC/30V DC loads.

Table of contents

Temperature range MAX7502 temperature sensor Low power consumption Enable/disable thermostat functionality Application Key features

If you need a temperature sensor and relay in one device, you should look no further than Thermostat click. It can be used to measure environmental temperature and to directly switch ON/OFF cooling and heating devices, performing all the functions of a thermostat.

Thermostat click carries the MAX7502 IC digital temperature sensor, that also provides an overtemperature alarm/interrupt/shutdown output, and an SN74LVC1G126 single bus buffer from Texas Instruments. MAX7502 IC can measure temperatures from -25°C to +100°C, within the accuracy of ±1.5°C.

The G6D PCB power relay can control up to 5A, 250V AC/30V DC loads.

The click runs on either 3.3V or 5V power supply and communicates with the target MCU over I2C interface.

Temperature range

The IC can measure temperatures from -25°C to +100°C, within the accuracy of ±1.5°C.

MAX7502 temperature sensor

MAX7502 temperature sensor measures temperature, converts the data into digital form using a sigma-delta ADC, and communicates the conversion results through an I2C-compatible 2-wire serial interface.

It accepts standard I2C commands to read the data, set the overtemperature alarm trip thresholds, and configure other characteristics.

Low power consumption

The MAX7502 temperature sensor typically uses only around 250 µA, and in shutdown mode around 3 µA. With such low power consumption, it is very suitable for home automation devices.

Enable/disable thermostat functionality

There is also the TE thermostat enable pin on the mikroBUS pin socket for enabling high level or disabling low of the thermostat functionality. This is accomplished via the SN74LVC1G126 single bus buffer with 3-state output IC, which serves as an electronic switch between temperature sensor IC output pin and the relay driver circuit.

This way the relay can be permanently disconnected from the sensor IC output. A feature like this can be useful when the sensor IC is only used as an measuring device, or if the thermostat needs to be temporarily disabled.

Application

HVAC systems, heating systems, cooling systems, simple interrupt ON/OFF temp control, hysteresis controller, etc.

Key features
• MAX7502 temperature sensor o ±1.5°C max temperature accuracy o 3µA typ shutdown supply current o Overtemperature alarm output
• SN74LVC1G126 single bus buffer o Designed for to VCC operation o Low Power Consumption, Max ICC
• Onboard screw terminal
• I2C interface
• Either 3.3V or 5V power supply

SPECIFICATION

Product Type Applications On-board modules Key Features

Key Benefits Interface Power Supply Compatibility Click board size

Temperature / Humidity HVAC systems, heating systems, cooling systems, simple interrupt ON/OFF temp control, hysteresis controller, etc. MAX7502 IC digital temperature sensor MAX7502 temperature sensor, SN74LVC1G126 single bus buffer, G6D PCB power relay, I2C interface, either 3.3V or 5V power supply, Temperature sensor and relay in one device, it can measure environmental temperature and directly switch ON/OFF cooling and heating devices I2C 3.3V or 5V mikroBUS L x mm

Pinout diagram

This table shows how the pinout on Thermostat click corresponds to the pinout on the mikroBUS socket the latter shown in the two middle columns .

Notes
mikroBUStm

Notes

Not connected NC 1 AN PWM 16 NC Not connected

Hardware Reset for MAX7502 RST# 2 RST INT 15 NC Not connected

Thermostat enable TE 3 CS TX 14 NC Not connected

Not connected NC 4 SCK RX 13 NC Not connected

Not connected NC 5 MISO SCL 12 SCL Serial Data Input/Output Line

Not connected NC 6 MOSI SDA 11 SDA Serial Data Clock Input

Power supply +3.3V 7 +3.3V +5V 10 +5V Power supply

Ground GND 8 GND 9 GND Ground

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Datasheet ID: MIKROE-2273 649311