ATMEGA169PV-8AU - AVR 8-Bit MCU 16KB Flash 8MHz | Microchip
MPN: ATMEGA169PV-8AU β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.62 | $4.62 |
| 10 | $4.18 | $41.80 |
| 100 | $3.72 | $372.00 |
| 500 | $3.35 | $1,675.00 |
| 1,000 | $2.98 | $2,980.00 |
ATMEGA169PV-8AU Overview
An 8-bit AVR microcontroller is an embedded processing IC based on the AVR enhanced RISC architecture, in which most of its 133 powerful instructions execute in a single clock cycle. Within the system hierarchy, a microcontroller IC sits above discrete logic and below application processors, combining CPU, memory, ADC, timers, and I/O in one chip. The ATmega169P family belongs to Microchip's (formerly Atmel) AVR ATmega line of flash-based MCUs.
Key features of the ATMEGA169PV-8AU include 16 KBytes of self-programming flash with boot-code section protection, 512 B of on-chip EEPROM for non-volatile data retention, up to 53 general-purpose I/O lines, an integrated LCD driver that offloads segment driving from firmware, and JTAG boundary-scan plus on-chip debugging. Throughput approaches 1 MIPS per MHz, delivering roughly 8 MIPS at the 8 MHz maximum clock, which lets designers trade clock speed against power consumption.
Architecturally, the device pairs an AVR core with Harvard memory organization, 32 general-purpose working registers directly connected to the ALU, and an on-chip PLL-free clock system supporting crystal, resonator, RC, or external clock sources. The internal 8-channel 10-bit ADC features a programmable-gain differential mode, while three timers with PWM outputs support motor, backlight, and tone-control tasks.
Typical applications include battery-operated metering with LCD displays, appliance user interfaces, sensor hubs using the 10-bit ADC, and industrial control panels where 5 V noise immunity matters.
A key design consideration: select crystals honoring the datasheet's maximum ESR recommendation for 6.5 pF and 9 pF loads, since the oscillator is optimized for very low power rather than high drive.
This page consolidates distributor pricing, drop-in alternatives, design notes, and AEO-optimized FAQs not found together on the manufacturer datasheet.
Drop-in alternatives for ATMEGA169PV-8AU β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ATMEGA169PV-8AU (same form factor and footprint) β differing in Core Architecture, LCD Controller, Package, Debug Interface, EEPROM Size.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ATMEGA169P-15AT
β Drop-Inβ In Stock
$3.6 / Unit
View Datasheet βATMEGA169PA-AU
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
ATMEGA169PV-8AUR
β Drop-Inβ In Stock
$4.16 / Unit
View Datasheet βATMEGA329PV-8AU
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
ATMEGA165PV-8AU
β Drop-Inβ In Stock
$2.49 / Unit
View Datasheet βATMEGA169PV-8AU Maximum Ratings & Electrical Characteristics
| Core Architecture | AVR 8-bit RISC |
| Flash Memory | 16 KB (8K x 16) in-system programmable |
| SRAM | 1 KB |
| EEPROM | 512 B |
| Maximum Clock Frequency | 8 MHz |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Number of I/O | 53 |
| ADC | 8-channel, 10-bit |
| LCD Controller | Integrated LCD driver |
| Debug / Boundary Scan | JTAG (IEEE 1149.1) on-chip debug |
| Instruction Set | 133 instructions, most single-cycle |
| Package | 64-TQFP, 14 x 14 mm body |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C |
| RoHS Status | Compliant (PV green suffix) |
| Packaging Option | Tray |
| Interface | SPI, UART/USART, JTAG |
ATMEGA169PV-8AU 64-tqfp, 14 x 14 mm body Pin Configuration Guide
Pin configuration for ATMEGA169PV-8AU (64-tqfp, 14 x 14 mm body package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for ATMEGA169PV-8AU.
Refer to the datasheet for full pin configuration.
Typical Applications
ATMEGA169PV-8AU is suitable for 6 applications: Battery-Powered Metering with LCD Display, Industrial Control Panels, Appliance User Interfaces, Sensor Hubs and Data Acquisition, Portable Medical Monitoring Devices, Automotive Aftermarket and Body Accessories.
Battery-Powered Metering with LCD Display
The ATMEGA169PV-8AU fits battery-powered energy, water, and utility meters because its integrated LCD controller drives segment displays directly and its AVR core reaches throughput near 1 MIPS per MHz, allowing operation at reduced clock for milliamp-to-microamp average current. With 16 KB flash for measurement code and 512 B EEPROM for tariff and consumption records, one chip replaces MCU-plus-LCD-driver two-chip solutions. Placed on a 3 V lithium cell rail, the 2.7 V minimum supply keeps the ADC and LCD functional down to end-of-battery voltage, while the JTAG port supports production calibration and boundary-scan test of the finished board without extra test points.
Recommended
Industrial Control Panels
In industrial control panels running legacy 5 V logic, the ATMEGA169PV-8AU's 2.7 V to 5.5 V supply range and 53 GPIO lines provide generous noise-margin interfacing to relays, optocouplers, and front-panel keys without level translation. The three timers with PWM outputs drive heater, fan, or motor duty cycles, while the 8-channel 10-bit ADC reads potentiometer setpoints and analog sensor loops. The integrated LCD driver renders status text on segment panels, and JTAG boundary scan simplifies production test of dense TQFP-64 assemblies. Industrial -40C to +85C temperature capability covers unconditioned cabinets, and 16 KB flash accommodates PID control code with communication protocol stacks on SPI or USART.
Recommended
Appliance User Interfaces
Home-appliance user interfaces, such as oven, washing machine, and coffee-machine front panels, are a classic ATmega169P use case because the chip's LCD segment controller, key-scannable GPIO, buzzer-capable PWM timer, and 16 KB flash all live in one 64-TQFP. The 5 V operation withstands the electrically noisy environment of triac-switched heater loads, and the EEPROM retains user settings and fault codes across power cycles. Single-cycle AVR execution keeps debouncing, tone generation, and display refresh responsive at modest 1-4 MHz clocks, cutting radiated emissions. The JTAG interface supports firmware update jigs used in service centers, and the 53 I/O budget covers relays, sensors, and the full segment matrix simultaneously.
Recommended
Sensor Hubs and Data Acquisition
The ATMEGA169PV-8AU serves as a compact sensor hub where its 8-channel 10-bit ADC with differential programmable gain reads bridge, thermistor, and current-sense signals, while SPI and USART links offload processed data to radios or host controllers. At 8 MHz the AVR core delivers roughly 8 MIPS, sufficient for oversampling and digital filtering that pushes effective ADC resolution beyond 10 bits in slow signals. The 1 KB SRAM buffers sample blocks for burst transfer, and 512 B EEPROM stores calibration constants written in the field. With 2.7 V operation the same board runs from Li-SOCl2 cells in remote monitoring nodes, and JTAG enables automated end-of-line calibration against a precision reference.
Recommended
Portable Medical Monitoring Devices
Portable medical monitoring accessories, including patient-carried recorders and point-of-care indicator units, benefit from the ATMEGA169PV-8AU's combination of low-power AVR operation, integrated LCD for patient-facing readouts, and 10-bit ADC for physiological front ends such as pulse-oximeter and temperature channels. The 2.7 V floor allows two-cell alkaline or single lithium designs, and per-MHz throughput scaling lets firmware run the core at 1 MHz during measurement windows to minimize noise and consumption. The 512 B EEPROM holds patient calibration data, and the industrial temperature range plus RoHS green package simplify regulatory documentation. Careful analog layout separating the ADC reference from LCD drive lines preserves measurement fidelity.
Recommended
Automotive Aftermarket and Body Accessories
In automotive aftermarket body accessories, such as display modules, keypads, and lighting controllers operating from 12 V buses through a 5 V regulator, the ATMEGA169PV-8AU's 5 V tolerance, 53 I/O, and LCD driver consolidate cluster segment displays and switch matrices in one TQFP-64. The 10-bit ADC reads battery sense and analog joystick inputs, PWM timers drive LED dimming with quantum visibility, and the EEPROM stores learned configurations across key-off cycles. JTAG boundary scan supports ICT-based production test demanded by tier suppliers. Note this commercial-grade part is not AEC-Q100 qualified, so restrict use to non-safety, cabin-temperature accessory applications rather than underhood or safety-critical nodes.
Recommended
Recommended Products Summary
Engineering reference data for ATMEGA169PV-8AU β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMEGA169P-15AT | ATMEGA169PA-AU | ATMEGA169PV-8AUR | ATMEGA329PV-8AU | ATMEGA165PV-8AU |
|---|---|---|---|---|---|---|
| Package | 64-TQFP (14x14 mm) | 64-TQFP (14x14 mm) - same | 64-TQFP (14x14 mm) - same | 64-TQFP (14x14 mm) - same | 64-TQFP (14x14 mm) - same | 64-TQFP (14x14 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 32 KB | 16 KB |
| SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 2 KB | 1 KB |
| LCD Controller | Yes | Yes | Yes | Yes | Yes | No |
| Max Clock Speed | 8 MHz | 16 MHz (speed grade 15) | 16 MHz (speed grade varies) | 8 MHz | 8 MHz | 8 MHz |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 1.8 V to 5.5 V (PA wide-voltage) | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Packaging | Tray | Tray | Tray | Tape & Reel | Tray | Tray |
Key Differentiators
- Integrated LCD controller (vs ATMEGA165PV-8AU)
- Double the program memory headroom (vs ATMEGA329PV-8AU (reverse comparison))
- JTAG on-chip debug and boundary scan (vs ATMEGA168PB-AUR)
Design Notes
Crystal selection is the most frequent ATmega169P failure point. The Microchip ATmega169P datasheet (doc8018) states the oscillator is optimized for very low power, and Table 8-7 defines maximum ESR limits for 9 pF and 6.5 pF crystals that must be respected. An over-ESR crystal can fail to start at cold temperature or low VCC even though the bench prototype works. Request the crystal vendor's ESR specification, verify load capacitors total 6.5 pF or 9 pF as intended including PCB stray capacitance, and test startup at -40C and 2.7 V on first silicon.
Decouple VCC and AVCC independently: place 100 nF ceramic capacitors within 3 mm of each supply pin plus a 10 uF bulk capacitor per supply domain. Connect AVCC to VCC through an LC filter when the ADC is used, and route LCD segment traces away from the ADC reference and analog input traces, since LCD drive waveforms couple capacitively into high-impedance analog nodes. Keep the JTAG header footprint populated even if unused, because boundary-scan access greatly simplifies production fault isolation on TQFP-64 assemblies.
Exploit the 1 MIPS-per-MHz scaling for battery designs: running the ATMEGA169PV-8AU at 1 MHz instead of 8 MHz cuts dynamic current roughly eightfold while still providing 1 MIPS for most metering code. Use the AVR power-management sleep modes (power-down with watchdog wake) between measurement windows rather than reducing voltage below 2.7 V, which would compromise flash programming and ADC accuracy. Estimated: at 5 mA active and 1% duty cycle from a 3 V 1000 mAh cell, average drain is 50 uA, giving about 2 years of service life before peripheral quiescent budgeting.
Compliance Information
The PV suffix in the Microchip ordering code denotes the RoHS-compliant, lead-free green package option. No AEC-Q100 qualification is claimed for this commercial/industrial grade AVR part. REACH and conflict-minerals status were not stated in the provided web data.
