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Microchip Technology ATMEGA1608-MF
- Part No.:
- ATMEGA1608-MF
- Manufacturer:
- Microchip Technology
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ATMEGA1608-MF.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,030
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Product details
Overview
ATMEGA1608-MF from Microchip Technology is a 16 KB Flash, 2 KB SRAM, 256B EEPROM megaAVR® 0-series 8-bit microcontroller in 32-pin VQFN (5×5 mm) package, operating up to 20 MHz at 4.5–5.5 V, featuring UPDI single-pin debug interface, Event System, SleepWalking peripherals, and 10-bit 150 ksps ADC - used in industrial sensor nodes and low-power control modules.
For engineers reviewing the ATMEGA1608-MF datasheet, ATMEGA1608-MF pinout, ATMEGA1608-MF application, or ATMEGA1608-MF equivalent, key selection considerations include its 32-pin VQFN footprint, 2 KB SRAM allocation for real-time firmware execution, UPDI programming simplicity, and verified operation across -40°C to +85°C industrial temperature range.
Technical Context
The ATMEGA1608-MF implements the AVR® CPU with two-cycle hardware multiplier and two-level interrupt controller, supporting deterministic real-time response. It integrates TCA (16-bit Timer/Counter A), three TCBs, RTC, and CRCSCAN for memory integrity verification - all synchronized via the core-independent Event System.
SleepWalking enables peripherals like ADC or USART to autonomously sample and wake the CPU only on threshold-triggered events. Its voltage reference subsystem provides five internal references (0.55V–4.3V), and the Brown-out Detector (BOD) supports configurable trip points for robust power-supply monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash Memory | 16 KB in-system reprogrammable - sufficient for medium-complexity firmware with bootloader space reserved. |
| SRAM | 2 KB - supports concurrent operation of multiple peripherals and stack-intensive tasks without external RAM. |
| EEPROM | 256 bytes - retains calibration data or user settings across 100,000 write cycles and 40-year data retention at 55°C. |
| Max Clock Frequency | 20 MHz at 4.5–5.5 V - enables high-throughput serial communication and fast analog sampling at full resolution. |
| ADC Resolution & Speed | 10-bit, 150 ksps - captures fast transients in motor control feedback or sensor burst-mode acquisition. |
| Operating Temperature | -40°C to +85°C - qualified for industrial environments including factory automation and building controls. |
| Debug Interface | Single-pin UPDI - eliminates need for dedicated debug headers, simplifying PCB layout and reducing BOM count. |
Pinout & Package
ATMEGA1608-MF is housed in a 32-pin VQFN package (5 mm × 5 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are multiplexed across PORTA, PORTC, PORTD, and PORTF, supporting flexible peripheral routing via PORTMUX.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Primary 1.8–5.5 V supply rail; decoupling required per datasheet layout guidelines. |
| GND | Ground reference | Dual ground pins (Pins 1, 32) reduce impedance for analog/digital separation. |
| UPDI | Unified Program and Debug Interface | Single-wire bidirectional interface for programming, debugging, and fuse configuration - no additional pins needed. |
| PA0–PA7 | Port A I/O bank | 8-bit general-purpose I/O with alternate functions including ADC0, TCA0, USART0, and SPI. |
| PC0–PC3 | Port C I/O bank | 4-bit I/O supporting TCB0–TCB2, TWI, and external interrupts - enables compact peripheral expansion. |
| PD0–PD7 | Port D I/O bank | 8-bit I/O with USART1, TCB3, and RTC clock input - supports dual-serial communication and timekeeping. |
| PF0–PF6 | Port F I/O bank | 7-bit I/O including ADC inputs, AC+, AC−, and event system channels - optimized for analog sensing and event-driven logic. |
Key Features
| Feature | Design Value |
|---|---|
| Event System | 6-channel core-independent inter-peripheral signaling - eliminates CPU polling and reduces latency between ADC trigger and TCB capture. |
| SleepWalking | ADC, USART, and AC can operate autonomously in sleep mode - extends battery life in wireless sensor nodes by >90% vs. active polling. |
| Configurable Custom Logic (CCL) | 4 LUTs with programmable interconnect - implements glue logic (e.g., PWM edge detection or signal synchronization) without CPU overhead. |
| Real-Time Counter (RTC) | 16-bit counter with crystal or RC clock source - maintains accurate timekeeping during deep sleep with <±10 ppm drift using 32.768 kHz crystal. |
| Peripheral Touch Controller (PTC) support | Not integrated - PTC is absent in ATMEGA1608-MF; touch functionality requires external IC or GPIO-based capacitive sensing. |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop speed regulation of BLDC motors in HVAC blowers using hall-effect feedback. IC Role / Device Role / Timing Role: Real-time PWM generation via TCA0, ADC sampling of current/voltage, and UART telemetry transmission. Use Value: Deterministic 20 MHz timing ensures sub-microsecond PWM jitter; SleepWalking allows background ADC oversampling while CPU remains in Standby. |
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and CO₂ over LoRaWAN. IC Role / Device Role / Timing Role: Low-power sensor hub coordinating ADC reads, CRC-verified flash logging, and USART-to-LoRa module handoff. Use Value: UPDI simplifies field firmware updates; 2 KB SRAM buffers multi-sensor data bursts before transmission, avoiding packet loss. |
| Programmable Logic Controller (PLC) I/O Module | Energy Metering Front-End |
Use Scenario: DIN-rail mounted digital I/O expansion with opto-isolated inputs and relay drivers. IC Role / Device Role / Timing Role: GPIO management, event-triggered interrupt handling, and RS-485 communication via USART1. Use Value: 27 GPIOs support 16-channel input scanning with debounce; Event System routes external interrupt edges directly to TCB for precise timestamping. |
Use Scenario: Residential electricity meter measuring voltage/current phase angles and computing RMS/kWh. IC Role / Device Role / Timing Role: High-accuracy ADC sampling synchronized to zero-crossing detection via AC comparator. Use Value: Five internal voltage references enable ratiometric ADC scaling across varying shunt resistor values; RTC logs tamper events with timestamped EEPROM writes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATMEGA1609-MF | 48-pin TQFP/VQFN package; adds 4 extra GPIOs, 1 additional USART, and 2 more TCBs vs. ATMEGA1608-MF. | Required when board layout supports larger footprint and needs expanded serial connectivity or timer resources. | Select ATMEGA1609-MF only if pin count and peripheral count exceed ATMEGA1608-MF's 32-pin, 3-USART, 3-TCB limits. |
| ATMEGA808-MF | 8 KB Flash, 1 KB SRAM, same 32-pin VQFN package and peripheral set - direct pin-compatible subset of ATMEGA1608-MF. | Suitable for cost-sensitive designs where firmware size stays under 8 KB and RAM usage remains ≤1 KB. | Choose ATMEGA808-MF for firmware with minimal feature set and lower memory requirements - identical pinout and debug interface. |
Compared with ATMEGA1608-MF, ATMEGA1609-MF offers higher I/O and peripheral scalability but requires PCB redesign, while ATMEGA808-MF delivers identical form-factor compatibility with reduced memory - enabling vertical migration within the same footprint without layout changes.
Availability
ATMEGA1608-MF is available at Aetrix Electronics and suitable for industrial motor control, smart sensor node, PLC I/O module, and energy metering front-end applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for ATMEGA1608-MF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology Inc. is a leading provider of microcontrollers, analog components, and Flash-IP solutions, serving industrial, automotive, and consumer markets with silicon and development tools.
The ATMEGA1608-MF belongs to the megaAVR® 0-series - designed specifically for cost-effective, low-power embedded control applications demanding high peripheral integration, deterministic timing, and simplified debug infrastructure.
FAQ
What is the maximum operating frequency of the ATMEGA1608-MF and under what voltage conditions?
The ATMEGA1608-MF operates up to 20 MHz when supplied with 4.5–5.5 V. At 2.7–5.5 V, the maximum frequency is 10 MHz, and at 1.8–5.5 V, it is limited to 5 MHz. These speed grades are validated across the full -40°C to +85°C industrial temperature range, ensuring reliable timing in variable power environments. The ATMEGA1608-MF uses an internal 16/20 MHz oscillator calibrated to ±10% accuracy.
Does the ATMEGA1608-MF support hardware debugging, and how is it implemented?
Yes, the ATMEGA1608-MF supports hardware debugging via the Unified Program and Debug Interface (UPDI), a single-wire bidirectional interface using one dedicated pin (Pin 4). UPDI enables full in-circuit programming, real-time debugging, fuse configuration, and memory read/write - eliminating the need for separate SWD or JTAG headers. This capability is fully functional on the ATMEGA1608-MF without external circuitry.
How many ADC channels does the ATMEGA1608-MF provide, and what is their resolution and sampling rate?
The ATMEGA1608-MF integrates a single 10-bit successive-approximation ADC with up to 12 input channels (PA0–PA7, PF0–PF3). It achieves a maximum sampling rate of 150 ksps at full 10-bit resolution. The ADC supports selectable internal voltage references (0.55V, 1.1V, 1.5V, 2.5V, 4.3V) and automatic channel scanning triggered by Event System or timer overflow - all confirmed in the DS40002172C datasheet for ATMEGA1608-MF.
Is the ATMEGA1608-MF pin-compatible with other members of the megaAVR® 0-series, and which ones?
The ATMEGA1608-MF is pin-compatible with ATMEGA808-MF and ATMEGA809-MF in the same 32-pin VQFN package, sharing identical pinout, power, and debug interface assignments. It is not pin-compatible with 28-pin SSOP or 48-pin variants (e.g., ATMEGA1609-MF), as those use different package footprints and extended I/O mappings. This compatibility enables memory-scaling upgrades without PCB revision.
What sleep modes are supported by the ATMEGA1608-MF, and which peripherals remain active during low-power operation?
The ATMEGA1608-MF supports three sleep modes: Idle (all peripherals active), Standby (RTC and BOD running), and Power-Down (only UPDI and external reset active). In SleepWalking mode, selected peripherals - including ADC, USART, and Analog Comparator - can autonomously execute tasks and wake the CPU on event completion. This behavior is natively supported in the ATMEGA1608-MF silicon and documented in Section 11 of DS40002172C.
ATMEGA1608-MF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- 32-VFQFN Exposed Pad
- Series:
- megaAVR® 0, Functional Safety (FuSa)
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- AVR
- Core Size:
- 8-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, WDT
- Number of I/O:
- 27
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 256 x 8
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
ATMEGA1608-MF FAQ
1.How can I place an order for ATMEGA1608-MF through Aetrix?
Please submit a Request for Quotation (RFQ) for ATMEGA1608-MF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ATMEGA1608-MF reliable?
The price and inventory of ATMEGA1608-MF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATMEGA1608-MF is usually 5 days.
3.What payment methods are accepted for ATMEGA1608-MF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATMEGA1608-MF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATMEGA1608-MF?
ATMEGA1608-MF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATMEGA1608-MF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ATMEGA1608-MF?
For technical support, including ATMEGA1608-MF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATMEGA1608-MF requirements.
6.How does Aetrix verify that ATMEGA1608-MF is sourced from the original manufacturer or authorized distributors?
All ATMEGA1608-MF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ATMEGA1608-MF meets industry standards.
7.What is the process for return or replacement of ATMEGA1608-MF?
All ATMEGA1608-MF units undergo pre-shipment inspection (PSI). If there is an issue with ATMEGA1608-MF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ATMEGA1608-MF part is unused and in its original packaging.
Return procedure for ATMEGA1608-MF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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