ATTINY20-MMH - 8-Bit 12MHz AVR MCU 2KB Flash | Microchip
Référence : ATTINY20-MMH ✓ ActifATTINY20-MMH Présentation
The ATtiny20 belongs to the TinyAVR family of 8-bit AVR microcontrollers. An AVR microcontroller is a semiconductor controller that combines a CPU core, program memory, data memory, I/O ports, timers, and peripherals on one integrated circuit. Its compact enhanced RISC architecture executes many instructions in a single clock cycle, providing useful processing throughput while supporting low-power embedded-system designs. The ATTINY20-MMH is therefore suitable for control logic, sensor interfaces, and small autonomous systems where package size and integration matter.
Verified product information identifies 2 KB (1K x 16) of Flash memory, 128 B SRAM, 12 general-purpose I/O lines, 16 general-purpose working registers, and timer resources including an 8-bit timer/counter with two PWM channels. The supplied distributor listings also identify a 12 MHz maximum device speed, a 20-VQFN package, and an ADC-related feature set. These characteristics make the part suitable for embedded control rather than high-compute applications.
Typical uses include compact sensor nodes, industrial control modules, small motor or actuator controllers, keyboard and interface controllers, and low-power embedded subsystems. The 12 MHz clock rate provides a practical balance between processing capability and power consumption, while the 3x3 mm VQFN package supports space-constrained boards. The device's 12 I/O lines provide connectivity for sensors, indicators, logic signals, and control outputs.
Designers should verify the exact pin functions, exposed-pad connection, operating voltage limits, ADC characteristics, clock configuration, and programming interface against the manufacturer datasheet before layout or firmware deployment. The verified search data confirms the core identity and package, but detailed electrical limits are not included in the supplied records. This page combines the verified manufacturer and distributor information with purchasing, comparison, and design guidance intended to support an informed sourcing and engineering review.
Alternatives de remplacement direct pour ATTINY20-MMH — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
ATTINY406-MFR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATTINY20-MMH Valeurs maximales et caractéristiques électriques
| Processor Type | 8-bit AVR® enhanced RISC-based microcontroller |
| Fréquence d'horloge maximale | 12 MHz |
| Flash Memory | 2 KB (1K x 16) |
| Program Memory Type | In-system programmable Flash |
| SRAM | 128 B |
| General-Purpose I/O Lines | 12 |
| General-Purpose Working Registers | 16 |
| 8-Bit Timer/Counter | 1 |
| 8-Bit Timer PWM Channels | 2 |
| 16-Bit Timer/Counter | 1 |
| ADC | 10-bit ADC |
| Plage de température de fonctionnement | -40°C to +85°C |
| Boîtier | 20-VQFN (3x3 mm) |
| Type de montage | Surface mount |
| Architecture | AVR enhanced RISC |
| Instruction Set | 112 instructions |
Guide de configuration des broches du ATTINY20-MMH 20-vqfn (3x3 mm)
Configuration des broches du ATTINY20-MMH (boîtier 20-vqfn (3x3 mm)). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour ATTINY20-MMH.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
ATTINY20-MMH convient pour 6 applications: Compact Sensor Node, Industrial Control Module, LED Dimming and Lighting Control, Small Motor and Actuator Controller, Battery-Powered Embedded Device, Compact Interface and Key Controller.
Compact Sensor Node
The ATTINY20-MMH fits compact sensor nodes because it provides a 12 MHz clock, 12 general-purpose I/O lines, 128 B SRAM, and a 10-bit ADC within a 3x3 mm 20-VQFN package. The device can acquire sensor inputs, apply calibration and threshold logic, and manage a digital status or communications output without relying on a larger MCU. Its 2 KB Flash capacity is suitable for focused firmware rather than complex protocol stacks. Keep analog and digital grounding, decoupling, and exposed-pad layout in accordance with the manufacturer datasheet. Because the supplied records do not specify the ADC input count or full electrical characteristics, confirm those details before fixing the analog front end.
Recommandé
Industrial Control Module
The ATTINY20-MMH is appropriate for small industrial control modules that combine digital inputs with timed outputs. Its 12 MHz operating speed supports responsive state-machine logic, while the 8-bit timer/counter with two PWM channels can generate programmable control signals and the 16-bit timer/counter can support longer timing intervals. Twelve I/O lines leave room for sensors, interlocks, indicators, and actuator drivers within a compact board. For factory equipment, provide appropriate isolation, surge protection, and environmental separation around the MCU. The verified data does not establish AEC-Q100 qualification or extended-temperature grade, so industrial suitability must be based on the exact ordering information and system requirements.
Recommandé
LED Dimming and Lighting Control
The ATTINY20-MMH can support compact LED dimming and lighting-control circuits through its two 8-bit timer PWM channels and 12 MHz processing clock. PWM generation can represent brightness levels, while general-purpose I/O can receive enable commands or switch inputs and drive logic-level control signals. The device's 2 KB Flash is adequate for compact lighting sequences, calibration tables, and straightforward user-interface logic. A higher-current LED driver and any required transistor or MOSFET stage should be selected separately, and the exposed thermal pad must be connected according to the manufacturer layout guidance. Verify timing resolution, current limits, and analog-control details against the full datasheet before production.
Recommandé
Small Motor and Actuator Controller
The ATTINY20-MMH is suited to small motor and actuator controllers where timing, compactness, and limited I/O requirements dominate. The 8-bit timer/counter with two PWM channels can generate command waveforms, while the 16-bit timer/counter supports extended timing functions useful for motion sequencing. With 12 MHz operation and 128 B SRAM, the MCU can execute closed-loop control or position logic without occupying substantial board area. The 20-VQFN 3x3 mm package helps miniaturize the controller, but motor transients, ground bounce, and switching noise require careful separation from sensitive traces. External driver circuitry, current sensing, and protection must be designed independently of the MCU.
Recommandé
Battery-Powered Embedded Device
The ATTINY20-MMH can serve as the controller in a small battery-powered embedded device where a 3x3 mm footprint and modest processing requirements are important. The 12 MHz AVR core provides useful control throughput, and the device includes 12 I/O lines for sensors, indicators, and low-rate digital interfaces. Low-power operation should be implemented by following the manufacturer's sleep and clock-selection guidance rather than assuming the maximum 12 MHz frequency for every duty cycle. Battery chemistry, regulator efficiency, leakage, and average load determine the achievable runtime. Because the supplied records do not include current-consumption figures, those values must be checked in the datasheet before calculating battery life.
Recommandé
Compact Interface and Key Controller
The ATTINY20-MMH works well as a compact interface controller for keypad scanning, display logic, menu handling, or simple serial command decoding. Twelve I/O lines can be allocated among switch inputs and output signals, while 128 B SRAM supports temporary state and 2 KB Flash accommodates focused control firmware. The 12 MHz clock provides sufficient response time for ordinary human-interface tasks, and the 20-VQFN package can simplify space-constrained panel layouts. Debounce, signal-level compatibility, and display or communication timing should be handled in firmware or with companion circuitry. The manufacturer pin map must be checked before assigning external connectors because the verified data identifies the package but not individual pin functions.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATTINY20-MMH — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATTINY406-MFR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Package | 20-VQFN (3x3 mm) | 20-VFQFN exposed pad |
| Product Type | 8-bit AVR® RISC-based microcontroller | AVR® ATtiny microcontroller |
Principaux différenciateurs
- Documented target-specific memory configuration (vs ATTINY406-MFR)
- Explicit 12 MHz operating point (vs ATTINY406-MFR)
- Compact exposed-pad package (vs ATTINY406-MFR)
Notes de conception
Use the manufacturer ATtiny20 package drawing as the authority for the 20-VQFN land pattern, pin-one orientation, and exposed-pad connection. The verified search data establishes a 20-VQFN (3x3 mm) package but does not provide a verified pin table, so do not infer pad assignments from a generic VQFN drawing. Place local input and output decoupling close to the device, provide a low-impedance ground connection, and follow the datasheet's exposed-pad land pattern. Also confirm the PCB assembly process supports the package pitch and thermal-via recommendations before release.
The verified operating-voltage range is not available in the supplied records, so select the power rail only from the manufacturer datasheet rather than from related-device comparisons. Verify brownout behavior, input thresholds, ADC accuracy, and clock-source limits at the intended voltage. Add local bypass capacitance according to the manufacturer recommendations and account for startup current when designing the supply. The 12 MHz maximum is a timing capability, not an indication that the part should be operated continuously at maximum clock in a battery design.
Avoid treating same-package equivalence as proof of electrical or pin compatibility. The ATTINY406-MFR comparison identifies a 20-VFQFN exposed-pad format but does not establish identical I/O, power, programming, timer, ADC, or memory behavior. Before substitution, compare the complete manufacturer pin tables and migration requirements, then recompile firmware against the replacement device definition. Also note that 2 KB Flash and 128 B SRAM impose strict code-size and stack budgets; check the actual linker map instead of estimating from source-file size.
For designs that mix ADC inputs, PWM outputs, and external control signals, separate sensitive analog routing from switching and timer outputs. Keep traces short, use a continuous ground reference, and place any input filtering close to the relevant pins. The 12 MHz operating rate can reduce the available timing margin for slow-changing analog signals, so define sampling and acquisition behavior in firmware before setting the ADC clock. Exact ADC channel count, reference configuration, acquisition time, and input impedance are not present in the supplied records and must be verified from the manufacturer datasheet.
Informations de conformité
The supplied verified records do not provide extractable RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. No compliance status has been assumed.
