Microchip Technology ATTINY20-UUR
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.70 | $1.70 |
| 15+ | $1.56 | $23.40 |
| 25+ | $1.53 | $38.25 |
| 50+ | $1.45 | $72.50 |
| 100+ | $1.28 | $128.00 |
| N+ | $0.26 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Microchip Technology |
| Product Series | AVR® ATtiny |
| Packaging | Cut Tape (CT) | Tape & Reel (TR) |
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 12MHz |
| Connectivity | I2C, SPI |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of I/O | 10 |
| Program Memory Size | 2KB (1K x 16) |
| Program Memory Type | FLASH |
| EEPROM Size | - |
| RAM Size | 128 x 8 |
| Voltage - Supply (Vcc/Vdd) | 1.8V ~ 5.5V |
| Data Converters | A/D 8x10b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 12-WLCSP (1.56x1.4) |
| Package / Case | 12-UFBGA, WLCSP |
| ROHS |
The Microchip ATTINY20-UUR is an ultra-compact 8-bit AVR microcontroller in a 12-ball WLCSP package. It operates from 1.8V to 5.5V at up to 12MHz, with 2KB Flash and 128 bytes SRAM. Integrated features include brown-out detection, POR, PWM, and WDT. Its tiny footprint and low voltage make it perfect for wearables, medical disposables, and miniaturized IoT devices.
- Ultra-small WLCSP package: Enables miniaturized product designs where PCB area is extremely limited.
- 1.8V operation: Directly powered by a single alkaline or lithium coin cell without boost converter.
- 2KB Flash: Sufficient for small control routines and data storage in disposable devices.
- Integrated POR and BOD: Ensures clean startup and shutdown in battery-powered applications.
Wearable Fitness Trackers
The 12-UFBGA package is only 1.5mm x 2mm, fitting into smart rings or patches. 1.8V operation works with coin cells.
Disposable Medical Sensors
Low cost and tiny size enable single-use diagnostic strips. The 2KB Flash stores calibration data.
Smart Packaging Labels
Ultra-thin WLCSP integrates into paper labels. 12MHz speed handles simple data logging for cold-chain monitoring.
Hearing Aid Electronics
1.8V supply matches zinc-air batteries. The small footprint fits behind-the-ear devices.
Miniature IoT Nodes
For space-constrained wireless sensors, the WLCSP saves board space. PWM outputs drive LEDs or buzzers.
E-Textiles
The tiny package can be embedded in fabric. Low power consumption extends battery life in smart clothing.
- Q: What is the operating voltage?
- A: 1.8V to 5.5V, ideal for single-cell battery devices.
- Q: What is the maximum speed?
- A: 12MHz at 5V.
- Q: How much Flash and RAM?
- A: 2KB Flash and 128 bytes SRAM.
- Q: What package is this?
- A: 12-UFBGA (WLCSP) – wafer-level chip scale package.
- Q: Is it suitable for wearables?
- A: Yes, the ultra-small package and low voltage are perfect for compact wearables.
- Q: What is the operating voltage?
- A: 1.8V to 5.5V, ideal for single-cell battery devices.
- Q: What is the maximum speed?
- A: 12MHz at 5V.
- Q: How much Flash and RAM?
- A: 2KB Flash and 128 bytes SRAM.
- Q: What package is this?
- A: 12-UFBGA (WLCSP) – wafer-level chip scale package.
- Q: Is it suitable for wearables?
- A: Yes, the ultra-small package and low voltage are perfect for compact wearables.

ATTINY20-UUR.pdf