ATTINY84A-MMHR by Microchip 8-bit Microcontrollers

ATTINY84A-MMHR +BOM

Microchip Technology ATTINY84A-MMHR's Features

• Flash Program Memory: It has 8K bytes of in-system programmable and self-programmable Flash on-chip, with an erase/write endurance of 10,000 cycles.
• EEPROM: There is 512 bytes of in-system programmable EEPROM, with an erase/write endurance of 100,000 cycles.
• Internal SRAM: It has 512 bytes of internal SRAM with strong data retention capabilities. Data can be retained for 20 years at 85°C and 100 years at 25°C. It also has a programming lock function to ensure the data security of self-programmable Flash and EEPROM.

• Timer/Counter: It is equipped with one 8-bit and one 16-bit timer/counter, each having two PWM channels, which can be used for motor control, signal generation, etc.
• ADC: It has a 10-bit ADC with 8 single-ended channels and 12 differential channel pairs with programmable gain (1x / 20x), capable of meeting various analog signal acquisition requirements.
• Other Peripherals: It includes a programmable watchdog timer (with an independent on-chip oscillator), an on-chip analog comparator, and a universal serial interface, enhancing the system's stability and communication capabilities.

• Debugging and Programming: It has a debugWIRE on-chip debugging system and can be programmed in-system through the SPI port, which is convenient for development and debugging.
• Interrupts: It has internal and external interrupt sources, and 12 pins support pin change interrupts, enabling it to respond to external events in a timely manner.
• Low-Power Modes: It has low-power idle, ADC noise reduction, standby, and power-down modes, which can effectively reduce system power consumption. In the power-down mode, the register contents are retained, and the chip functions are disabled until the next interrupt or hardware reset.
• Other Characteristics: It has an enhanced power-on reset circuit, a programmable brown-out detection circuit (which can be disabled by software), an internal calibrated oscillator, and an on-chip temperature sensor.

Microchip Technology ATTINY84A-MMHR's Applications

• Smart Home Devices: In smart switches and sensor nodes, the low - power consumption feature of the ATTINY84A-MMHR can ensure the long - term stable operation of devices, reducing the frequency of battery replacement. Its numerous I/O ports can be connected to various sensors, such as temperature, humidity, and light sensors, to achieve environmental data collection. It can communicate with other devices through the universal serial interface to build a smart home network.
• Wearable Devices: It is used in wearable health monitoring devices, like smart bracelets. It utilizes its 10 - bit ADC to collect physiological data, such as analog signals of heart rate and blood pressure. The low - power mode can guarantee the long - term battery life of the device, meeting the daily usage requirements of users.

 

Microchip Technology ATTINY84A-MMHR's Datasheet

 

Microchip Technology ATTINY84A-MMHR's Attributes

Microchip Technology ATTINY84A-MMHR's Category - Microcontrollers

The Microchip Technology ATTINY84A - MMHR is a prime example of a microcontroller. A microcontroller, such as the ATTINY84A - MMHR, is a computer system that integrates storage, processing, and input/output functions, typically fabricated using integrated circuits. Differing from computers and general embedded systems, due to its extremely low power consumption and cost - effectiveness, it is widely employed in numerous electronic products and embedded systems, and the ATTINY84A - MMHR is no exception.

Microcontrollers can be classified according to different architecture types. The ATTINY84A - MMHR is based on the RISC architecture, similar to other well - known microprocessors like AVR (to which it belongs), ARM, PIC, and MSP430. Conversely, there are also microcontrollers based on the CISC architecture, such as 8051 and 8096, along with other application - specific integrated circuits like ASIC and FPGA.

Regarding applications, in the automation control field, the ATTINY84A - MMHR is widely used. For example, in home appliances, it can be incorporated into smart devices such as smart sockets and smart switches. By taking advantage of its low - power consumption feature, these appliances can operate stably for extended periods. Through its I/O ports, it can be connected to relays and sensors to precisely control the power on/off of home appliances. When combined with its ADC function to gather environmental parameters like light intensity and temperature, it enables automatic adjustment, thereby enhancing the intelligent level of home appliances. In industrial settings, it can be applied to small - scale industrial equipment control. Its timer can generate PWM signals to accurately regulate the speed and direction of small motors. The analog comparator can monitor motor - related parameters, and the watchdog timer ensures system stability under abnormal conditions, improving the reliability of industrial production.

As the core of modern electronic products and embedded systems, microcontrollers such as the ATTINY84A - MMHR are playing an increasingly vital role. This article, using the ATTINY84A - MMHR as an example, briefly analyzes the significance of microcontrollers in modern life and industrial production from aspects such as definition, classification, applications, and development history. The objective is to popularize scientific and technological knowledge among the public and enhance the ability of scientific and technological innovation.
 

ATTINY84A-MMHR vs PIC24F08KA101-I/MQ、STM8L101F2P6

Picture
Comparison Items	ATTINY84A-MMHR+BOM	PIC24F08KA101-I/MQ+BOM	STM8L101F2P6+BOM
Manufacturer	Microchip	Microchip	ST Microelectronics
Classification	Microcontroller	Microcontroller	Microcontroller
Package	VQFN - 20	QFN - 20	TSSOP - 20
Mounting Method	Surface Mount	Surface Mount	Surface Mount
Number of Pins	20	20	20
Technical Parameters
RAM Memory Size	512 x 8	1.5KB	1.5K x 8
Number of ADCs	1	1	-
Maximum Operating Temperature	85℃	85℃	85℃
Minimum Operating Temperature	-40℃	-40℃	-40℃
Power Supply Voltage	1.8 - 5.5V	1.8V ~ 3.6V	1.65V ~ 3.6V
Frequency	-	32MHz	16MHz
Clock Speed	-	32MHz	16MHz
Number of Bits	-	16	8
FLASH Memory Size	8KB	8KB	4KB
Number of Inputs and Outputs	-	18 Inputs	18 Inputs
Maximum Power Consumption	-	-	181mW
Dimensions
Length	3mm	5mm	6.6mm
Width	3mm	5mm	4.5mm
Height	0.85mm	0.88mm	1.05mm
Physical Parameters
Operating Temperature	-40℃ ~ 85℃	-40℃ ~ 85℃	-40℃ ~ 85℃
Other Parameters
Product Lifecycle Status	Unknown	Active	Active
Packaging	Tape & Reel (TR)	Tube	Tube
Compliance
RoHS	RoHS Compliant	RoHS Compliant	RoHS Compliant
Lead-Free Status	Lead-Free	Lead-Free	Lead-Free
REACH SVHC Compliance	-	No SVHC	No SVHC
REACH SVHC Compliance Version	-	2015/12/17	2015/12/17

 

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