AVR128DA28-I/SP Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
The AVR128DA28-I/SP is a Microchip 8-bit AVR microcontroller with 128 KB Flash, running at up to 24 MHz from a 1.8 V to 5.5 V supply in a 28-pin SPDIP package. It integrates a 12-bit ADC, DAC, multiple UART/SPI/I2C peripherals, and configurable custom logic (CCL) for flexible embedded control.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 28
- Lifecycle
- ACTIVE
- Datasheet
- AVR128DA28-I/SP Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.3400(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 128 KB Flash program memory with 16 KB SRAM provides ample storage for complex 8-bit firmware with data tables
- Configurable Custom Logic (CCL) enables hardware logic operations without CPU intervention, reducing latency and power
- 12-bit ADC and integrated DAC output allow mixed-signal sensor conditioning and analog waveform generation on the same chip
- Operates from 1.8 V to 5.5 V at up to 24 MHz, making it compatible with 3.3 V and 5 V sensor boards and breadboard prototypes
- 28-pin SPDIP package is breadboard-friendly for rapid prototyping while matching production-grade SPDIP footprints
Applications
The AVR128DA28-I/SP suits sensor-fusion nodes, home automation controllers, and small industrial PLCs where 8-bit AVR code portability and the 128 KB Flash capacity allow running a full application with bootloader and lookup tables. Its CCL and event-system peripherals also make it a cost-effective choice for motor-drive sequencers and smart LED dimmer controllers that require deterministic hardware responses without waking the CPU.
Specifications
| Manufacturer Package Code | SPDIP-28 |
| Factory Lead Time | 6Weeks |
| Date Of Intro | 2020-03-23 |
| YTEOL | 18 |
| Has ADC | YES |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | AVR |
| Clock Frequency-Max | 24MHz |
| DAC Channels | YES |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | R-PDIP-T28 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 23 |
| Number of I/O Lines | 23 |
| Number of Serial I/Os | 3 |
| Number of Timers | 5 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP28,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| RAM (bytes) | 16384 |
| RAM (words) | 16384 |
| ROM (words) | 131072 |
| ROM Programmability | FLASH |
| Speed | 24MHz |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 3V |
| Supply Voltage-Nom | 3V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for AVR128DA28-I/SP:
Microchip Technology Inc 128KB, 16KB RAM, 28p, 24MHz, 12b ADC, 3xComp, PTC, 3xZCD, DAC, UART, SPI, TWI
Frequently Asked Questions
How much Flash and SRAM does the AVR128DA28-I/SP provide, and is that enough for a bootloader plus application?
The AVR128DA28-I/SP integrates 128 KB of Flash and 16 KB of SRAM. A typical 4 KB Optiboot-style bootloader leaves 124 KB for application code, which is more than sufficient for a real-time control loop with lookup tables, UART command parser, and EEPROM management running at 24 MHz.
What is the Configurable Custom Logic (CCL) in the AVR128DA28-I/SP and how does it speed up response time?
The CCL is a set of programmable LUT blocks that create hardware logic functions—such as AND, OR, XOR, and latches—directly from I/O pins or peripheral signals without CPU intervention. A motor-control design can use the CCL to generate a fault-shutdown signal within 1 clock cycle (about 42 ns at 24 MHz) when an overcurrent comparator fires, which is far faster than any interrupt-driven firmware response.
Can the AVR128DA28-I/SP be used in battery-powered designs operating below 3 V?
Yes, the AVR128DA28-I/SP operates from a supply voltage as low as 1.8 V, which is compatible with a single lithium-ion cell at end-of-discharge or two alkaline AA cells. At 1.8 V the CPU runs at up to 8 MHz, and the device's power-down sleep mode draws only a few microamperes, enabling multi-year coin-cell or AA-battery lifetimes in low-duty-cycle sensor nodes.
Which serial communication interfaces are available on the AVR128DA28-I/SP for connecting sensors and displays?
The AVR128DA28-I/SP provides 3 USART modules (supporting UART, SPI master in USART mode, and LIN/ISO 7816), 2 SPI modules, and 2 TWI (I2C) modules, giving designers up to 7 independent serial channels on a 28-pin device. This is enough to simultaneously connect a GPS module via UART, an OLED display via SPI, and multiple I2C environmental sensors without pin multiplexing.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.2200 | $3.22 |
| 10+ | $2.9600 | $29.60 |
| 30+ | $2.6700 | $80.10 |
| 1000+ | $2.4700 | $2470.00 |
| 5000+ | $2.3400 | $11700.00 |
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