ATMEGA169V-8AI - 8-bit AVR MCU, 16KB Flash, LCD | Microchip
Référence : ATMEGA169V-8AI ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $4.2 | $4,20 |
| 10 | $3.78 | $37,80 |
| 100 | $3.36 | $336,00 |
| 500 | $2.94 | $1 470,00 |
| 1 000 | $2.58 | $2 580,00 |
ATMEGA169V-8AI Présentation
An 8-bit microcontroller is a single-chip computer integrating a processor core, program memory, data memory, and peripherals on one die. Within the power-management and embedded-system hierarchy, the ATmega family sits in the general-purpose MCU class: microcontroller -> embedded processor -> semiconductor. AVR MCUs are widely used where low power, simple tooling, and deterministic single-cycle RISC execution matter.
Key features include 131 powerful AVR instructions with mostly single-clock execution, 32 general-purpose working registers, 54 general-purpose I/O lines, and full static operation for up to 16 MIPS throughput at 16MHz (8MHz max for the V grade). The wide 1.8V to 5.5V supply range supports battery-powered designs directly from two AA cells to 5V logic.
Technical depth: the ATmega169 integrates a complete on-chip LCD controller with internal step-up voltage, driving segmented LCDs without external charge-pump ICs. An 8-channel 10-bit ADC, three flexible timers with PWM, a JTAG interface for boundary scan, on-chip debugging and In-System Programming, and SPI/USART serial interfaces round out the peripheral set. Read-While-Write Flash allows firmware updates during operation.
Typical applications include battery-operated devices with segmented LCD displays (meters, thermostats, hand-held instruments), industrial automation nodes, and consumer electronics human-machine interfaces.
Design consideration: the V grade limits clocking to 8MHz; at 5V and 8MHz, keep Flash write cycles within datasheet endurance of 10,000 cycles and use the internal RC oscillator or external crystal per the system clock options.
This page synthesizes distributor pricing, verified drop-in alternatives, LCD-driver design notes, and FAQ content not found in the manufacturer datasheet alone.
Alternatives de remplacement direct pour ATMEGA169V-8AI — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ATMEGA169V-8AI (même facteur de forme et même empreinte) — différant par Package, Core Architecture, Operating Temperature, Series, EEPROM.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATMEGA169PV-8AUR
✅ Remplacement direct✓ En stock
$4.16 / unité
Voir la fiche technique →ATMEGA169P-15AT
✅ Remplacement direct✓ En stock
$3.6 / unité
Voir la fiche technique →ATMEGA169V-8AU
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATMEGA165V-8AI
✅ Remplacement direct✓ En stock
$2.85 / unité
Voir la fiche technique →ATMEGA325V-8AI
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$3.2 / unité
Voir la fiche technique →ATMEGA169V-8AI Valeurs maximales et caractéristiques électriques
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 8 MHz |
| Flash Program Memory | 16 KB (8K x 16) |
| EEPROM | 512 B |
| SRAM | 1 KB |
| Operating Voltage Range | 1.8 V to 5.5 V |
| General Purpose I/O | 54 |
| ADC Resolution | 10-bit, 8-channel |
| LCD Controller | On-chip with internal step-up voltage |
| Timers | 3 flexible timers with PWM |
| Debug/Programming Interfaces | JTAG (boundary-scan, on-chip debug, ISP) |
| Instructions | 131 instructions, most single-cycle |
| MIPS Throughput | Up to 16 MIPS (fully static operation) |
| Température de fonctionnement | -40C to +85C (I grade, industrial) |
| Boîtier | 64-TQFP (14x14 mm) |
| Type de montage | Surface Mount |
Configuration des broches de ATMEGA169V-8AI
| Broche 1 | PE0 — Port E bit 0 / PDI / RXD0 |
| Broche 2 | PE1 — Port E bit 1 / PDO / TXD0 |
| Broche 3 | PE2 — Port E bit 2 / AIN0 / XCK0 |
| Broche 4 | PE3 — Port E bit 3 / OC3A / AIN1 |
| Broche 5 | PE4 — Port E bit 4 / OC3B / INT4 |
| Broche 6 | PE5 — Port E bit 5 / OC3C / INT5 |
| Broche 7 | PE6 — Port E bit 6 / T3 / INT6 |
| Broche 8 | PE7 — Port E bit 7 / ICP3 / INT7 / CLKO |
| Broche 9 | VCC — Digital supply voltage |
| Broche 10 | GND — Ground |
| Broche 11 | PG0 — Port G bit 0 / WR |
| Broche 12 | PG1 — Port G bit 1 / RD |
| Broche 13 | PG2 — Port G bit 2 / ALE / TOSC2 |
| Broche 14 | PG3 — Port G bit 3 / TOSC1 |
| Broche 15 | PG4 — Port G bit 4 / TOSC2 |
| Broche 16 | PC0 — Port C bit 0 / LCD segment / TCK |
| Broche 17 | PC1 — Port C bit 1 / LCD segment / TMS |
| Broche 18 | PC2 — Port C bit 2 / LCD segment / TDO |
| Broche 19 | PC3 — Port C bit 3 / LCD segment / TDI |
| Broche 20 | PC4 — Port C bit 4 / LCD segment / T4 |
| Broche 21 | PC5 — Port C bit 5 / LCD segment / OC1A |
| Broche 22 | PC6 — Port C bit 6 / LCD segment / OC1B |
| Broche 23 | PC7 — Port C bit 7 / LCD segment / ICP1 |
| Broche 24 | PD0 — Port D bit 0 / LCD segment / SCL (INT0) |
| Broche 25 | PD1 — Port D bit 1 / LCD segment / SDA (INT1) |
| Broche 26 | PD2 — Port D bit 2 / LCD segment / RXD1 (INT2) |
| Broche 27 | PD3 — Port D bit 3 / LCD segment / TXD1 (INT3) |
| Broche 28 | PD4 — Port D bit 4 / LCD segment / ICP1 |
| Broche 29 | PD5 — Port D bit 5 / LCD segment / XCK1 |
| Broche 30 | PD6 — Port D bit 6 / LCD segment / OC2A |
| Broche 31 | PD7 — Port D bit 7 / LCD segment / OC0A |
| Broche 32 | PB0 — Port B bit 0 / LCD segment / SS |
| Broche 33 | PB1 — Port B bit 1 / LCD segment / SCK |
| Broche 34 | PB2 — Port B bit 2 / LCD segment / MOSI |
| Broche 35 | PB3 — Port B bit 3 / LCD segment / MISO |
| Broche 36 | PB4 — Port B bit 4 / LCD segment / OC0 |
| Broche 37 | PB5 — Port B bit 5 / LCD segment / OC1A |
| Broche 38 | PB6 — Port B bit 6 / LCD segment / OC1B |
| Broche 39 | PB7 — Port B bit 7 / LCD segment / OC2 |
| Broche 40 | XTAL1 — Inverting oscillator amplifier input / internal clock input |
| Broche 41 | XTAL2 — Inverting oscillator amplifier output |
| Broche 42 | RESET — Active-low reset input |
| Broche 43 | AVCC — ADC and analog supply voltage |
| Broche 44 | PF0 — Port F bit 0 / ADC0 / LCD segment |
| Broche 45 | PF1 — Port F bit 1 / ADC1 / LCD segment |
| Broche 46 | PF2 — Port F bit 2 / ADC2 / LCD segment |
| Broche 47 | PF3 — Port F bit 3 / ADC3 / LCD segment |
| Broche 48 | PF4 — Port F bit 4 / ADC4 / TCK / LCD segment |
| Broche 49 | PF5 — Port F bit 5 / ADC5 / TMS / LCD segment |
| Broche 50 | PF6 — Port F bit 6 / ADC6 / TDO / LCD segment |
| Broche 51 | PF7 — Port F bit 7 / ADC7 / TDI / LCD segment |
| Broche 52 | AREF — Analog reference voltage for ADC |
| Broche 53 | GND — Ground |
| Broche 54 | GND — Ground |
| Broche 55 | PA0 — Port A bit 0 / ADC0 / LCD segment / COM terminal |
| Broche 56 | PA1 — Port A bit 1 / ADC1 / LCD segment |
| Broche 57 | PA2 — Port A bit 2 / ADC2 / LCD segment |
| Broche 58 | PA3 — Port A bit 3 / ADC3 / LCD segment |
| Broche 59 | PA4 — Port A bit 4 / ADC4 / LCD segment |
| Broche 60 | PA5 — Port A bit 5 / ADC5 / LCD segment |
| Broche 61 | PA6 — Port A bit 6 / ADC6 / LCD segment |
| Broche 62 | PA7 — Port A bit 7 / ADC7 / LCD segment |
| Broche 63 | VCC — Digital supply voltage |
| Broche 64 | GND — Ground |
Applications typiques
ATMEGA169V-8AI convient pour 6 applications: Battery-Powered LCD Meters and Instruments, Industrial Automation Nodes, Consumer Electronics HMI Panels, HVAC Thermostats and Climate Controls, Data Loggers and Handheld Measurement, Medical and Health Monitoring Devices.
Battery-Powered LCD Meters and Instruments
The ATMEGA169V-8AI is the reference choice for battery-operated segmented-LCD instruments such as utility meters, multimeters, and hand-held gauges. Its 1.8V to 5.5V supply range allows direct operation from two AA cells without a boost converter, while the on-chip LCD controller with internal step-up voltage drives the display glass directly, removing an external LCD driver IC and its cost, board area, and quiescent draw. The 8-channel 10-bit ADC samples sensor inputs, and AVR sleep modes keep average current in the microamp range between wakeups. Designers should budget LCD contrast against supply droop near end-of-life battery voltage.
Recommandé
Industrial Automation Nodes
In factory automation, the ATMEGA169V-8AI serves as a compact control node combining sensing, display, and communication. The -40C to +85C industrial temperature grade suits control cabinets and outdoor equipment, 54 GPIO interface switches, relays, and LEDs, and the SPI/USART peripherals link to RS-485 transceivers for fieldbus communication. The three timers generate PWM for actuator control. With 16KB Flash and Read-While-Write support, field firmware updates are possible without halting the control loop, and JTAG boundary scan supports production-line board test.
Recommandé
Consumer Electronics HMI Panels
Consumer products with simple segmented displays - coffee machines, remote controls, small appliances - benefit from the ATMEGA169V-8AI's single-chip integration of MCU, LCD driver, and touch of GPIO for keys. The 8MHz V-grade clock is sufficient for menu logic and debounce handling, while the internal RC oscillator option removes the crystal and its cost in cost-sensitive designs. RoHS-compliant lead-free construction meets consumer environmental requirements. Board designers should place the LCD traces away from switching loads to avoid contrast ghosting.
Recommandé
HVAC Thermostats and Climate Controls
Thermostats demand low standby power, a readable display, and analog sensing - all native strengths of the ATMEGA169V-8AI. The 10-bit ADC reads NTC temperature sensors with ratiometric accuracy against the supply reference, the LCD controller renders setpoint and status digits, and the 1.8V floor keeps the unit alive as batteries discharge. Timer-based wakeups periodically sample temperature and re-render the display, keeping average current low. The 512B EEPROM stores user schedules non-volatile across battery changes without external memory.
Recommandé
Data Loggers and Handheld Measurement
Portable data loggers use the ATMEGA169V-8AI to sample analog channels through the 8-channel 10-bit ADC, show readings on the integrated LCD, and stream records over USART to storage. The JTAG on-chip debug interface shortens firmware development with breakpoints and register inspection in-system. With 1KB SRAM and 512B EEPROM, designs buffer measurement batches locally, and the SPI bus connects serial Flash for larger datasets. Power-cycled logging applications should exploit the AVR power-down mode and external interrupt wake sources.
Recommandé
Medical and Health Monitoring Devices
Non-critical wellness devices such as pedometers, blood-pressure cuffs, and digital scales use the ATMEGA169V-8AI where a segmented LCD, low power, and modest compute suffice. The internal LCD step-up generator maintains uniform display contrast from a single low-voltage cell stack, and the 10-bit ADC digitizes bridge or front-end sensor outputs. The industrial temperature grade and RoHS compliance align with typical medical accessory requirements. Designs should verify EMC behavior of the LCD step-up circuit near sensitive analog front ends per the datasheet layout guidance.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATMEGA169V-8AI — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATMEGA169PV-8AUR | ATMEGA169P-15AT | ATMEGA165V-8AI | ATMEGA325V-8AI |
|---|---|---|---|---|---|
| Package | 64-TQFP (14x14 mm) | 64-TQFP (14x14 mm) - same | 64-TQFP - same | 64-TQFP (14x14 mm) - same | 64-TQFP (14x14 mm) - same |
| Brand | Microchip Technology (Atmel) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 32 KB |
| Max Clock Speed | 8 MHz | 8 MHz | 16 MHz | 8 MHz | 8 MHz |
| LCD Controller | Yes (with internal step-up) | Yes (with internal step-up) | Yes (with internal step-up) | No | Yes |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Power Technology | Standard ATmega169 | picoPower (lower sleep current) | ATmega169P (reduced power) | Standard | Standard |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C | Industrial grade | -40C to +85C | -40C to +85C |
| SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 2 KB |
Principaux différenciateurs
- Integrated LCD controller with internal step-up voltage (vs ATMEGA165V-8AI)
- picoPower migration path at zero PCB change (vs ATMEGA169PV-8AUR)
- Wide 1.8V to 5.5V supply range (vs ATMEGA169P-15AT (16MHz grade))
- Trade-off: only 16KB Flash / 1KB SRAM (vs ATMEGA325V-8AI)
Notes de conception
Decouple VCC and AVCC independently: place 100 nF ceramic capacitors within 5 mm of each VCC pin and a 100 nF capacitor at AVCC with a 10 uH ferrite or 10k-100R RC filter isolating AVCC from digital VCC per the ATmega169 datasheet analog-supply guidance. Tie AREF to ground through 100 nF when using the internal ADC reference. At 1.8V operation, verify brown-out detector thresholds are disabled or set to the low range, since default BOD levels assume 5V operation.
The on-chip LCD step-up converter requires an external flying capacitor and storage capacitor sized per the datasheet LCD chapter; route these capacitor traces short and away from the ADC inputs because the step-up switching can couple charge-injection noise into analog measurements. LCD segment lines carry AC waveforms - keep them on an inner layer or spaced from high-impedance analog nodes to prevent ghosting and crosstalk between adjacent segments.
The V grade limits the maximum clock to 8MHz across the full 1.8V-5.5V range - do not populate a faster crystal assuming headroom exists only at 5V; the ATmega169 datasheet defines a maximum frequency versus VCC curve that must be respected. When migrating to ATMEGA165V-8AI to save cost, remember the LCD controller is absent: firmware writes to LCD registers will have no effect, and the shared pins revert to GPIO/ADC function only.
For JTAG debugging and boundary-scan in production test, reserve the TCK/TMS/TDO/TDI pins (multiplexed on port C/PF) with 10k pull-ups on TCK and TMS, and provide a 2x5 JTAG header. If JTAG is unused after production, disabling the JTAG enable fuse frees the pins as general I/O but permanently removes boundary-scan testability - decide at layout time, since re-enabling requires ISP access.
Informations de conformité
The AI suffix denotes industrial temperature grade in Microchip's RoHS/lead-free packaging family per distributor listings. REACH and conflict-minerals statements should be confirmed from the official Microchip product compliance certificate at order time.