ATMEGA169V-8AI - 8-bit AVR MCU, 16KB Flash, LCD | Microchip
MPN: ATMEGA169V-8AI ✓ Hoạt độngATMEGA169V-8AI Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho ATMEGA169V-8AI — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ATMEGA169V-8AI (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, Operating Temperature, Series, EEPROM.
ATMEGA169PV-8AUR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA169P-15AT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA169V-8AU
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATMEGA165V-8AI
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA325V-8AI
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATMEGA169V-8AI Tỷ lệ tối đa & tính chất điện
| 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) |
| Nhiệt độ hoạt động | -40C to +85C (I grade, industrial) |
| Hộp | 64-TQFP (14x14 mm) |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân ATMEGA169V-8AI
| Chân 1 | PE0 — Port E bit 0 / PDI / RXD0 |
| Chân 2 | PE1 — Port E bit 1 / PDO / TXD0 |
| Chân 3 | PE2 — Port E bit 2 / AIN0 / XCK0 |
| Chân 4 | PE3 — Port E bit 3 / OC3A / AIN1 |
| Chân 5 | PE4 — Port E bit 4 / OC3B / INT4 |
| Chân 6 | PE5 — Port E bit 5 / OC3C / INT5 |
| Chân 7 | PE6 — Port E bit 6 / T3 / INT6 |
| Chân 8 | PE7 — Port E bit 7 / ICP3 / INT7 / CLKO |
| Chân 9 | VCC — Digital supply voltage |
| Chân 10 | GND — Ground |
| Chân 11 | PG0 — Port G bit 0 / WR |
| Chân 12 | PG1 — Port G bit 1 / RD |
| Chân 13 | PG2 — Port G bit 2 / ALE / TOSC2 |
| Chân 14 | PG3 — Port G bit 3 / TOSC1 |
| Chân 15 | PG4 — Port G bit 4 / TOSC2 |
| Chân 16 | PC0 — Port C bit 0 / LCD segment / TCK |
| Chân 17 | PC1 — Port C bit 1 / LCD segment / TMS |
| Chân 18 | PC2 — Port C bit 2 / LCD segment / TDO |
| Chân 19 | PC3 — Port C bit 3 / LCD segment / TDI |
| Chân 20 | PC4 — Port C bit 4 / LCD segment / T4 |
| Chân 21 | PC5 — Port C bit 5 / LCD segment / OC1A |
| Chân 22 | PC6 — Port C bit 6 / LCD segment / OC1B |
| Chân 23 | PC7 — Port C bit 7 / LCD segment / ICP1 |
| Chân 24 | PD0 — Port D bit 0 / LCD segment / SCL (INT0) |
| Chân 25 | PD1 — Port D bit 1 / LCD segment / SDA (INT1) |
| Chân 26 | PD2 — Port D bit 2 / LCD segment / RXD1 (INT2) |
| Chân 27 | PD3 — Port D bit 3 / LCD segment / TXD1 (INT3) |
| Chân 28 | PD4 — Port D bit 4 / LCD segment / ICP1 |
| Chân 29 | PD5 — Port D bit 5 / LCD segment / XCK1 |
| Chân 30 | PD6 — Port D bit 6 / LCD segment / OC2A |
| Chân 31 | PD7 — Port D bit 7 / LCD segment / OC0A |
| Chân 32 | PB0 — Port B bit 0 / LCD segment / SS |
| Chân 33 | PB1 — Port B bit 1 / LCD segment / SCK |
| Chân 34 | PB2 — Port B bit 2 / LCD segment / MOSI |
| Chân 35 | PB3 — Port B bit 3 / LCD segment / MISO |
| Chân 36 | PB4 — Port B bit 4 / LCD segment / OC0 |
| Chân 37 | PB5 — Port B bit 5 / LCD segment / OC1A |
| Chân 38 | PB6 — Port B bit 6 / LCD segment / OC1B |
| Chân 39 | PB7 — Port B bit 7 / LCD segment / OC2 |
| Chân 40 | XTAL1 — Inverting oscillator amplifier input / internal clock input |
| Chân 41 | XTAL2 — Inverting oscillator amplifier output |
| Chân 42 | RESET — Active-low reset input |
| Chân 43 | AVCC — ADC and analog supply voltage |
| Chân 44 | PF0 — Port F bit 0 / ADC0 / LCD segment |
| Chân 45 | PF1 — Port F bit 1 / ADC1 / LCD segment |
| Chân 46 | PF2 — Port F bit 2 / ADC2 / LCD segment |
| Chân 47 | PF3 — Port F bit 3 / ADC3 / LCD segment |
| Chân 48 | PF4 — Port F bit 4 / ADC4 / TCK / LCD segment |
| Chân 49 | PF5 — Port F bit 5 / ADC5 / TMS / LCD segment |
| Chân 50 | PF6 — Port F bit 6 / ADC6 / TDO / LCD segment |
| Chân 51 | PF7 — Port F bit 7 / ADC7 / TDI / LCD segment |
| Chân 52 | AREF — Analog reference voltage for ADC |
| Chân 53 | GND — Ground |
| Chân 54 | GND — Ground |
| Chân 55 | PA0 — Port A bit 0 / ADC0 / LCD segment / COM terminal |
| Chân 56 | PA1 — Port A bit 1 / ADC1 / LCD segment |
| Chân 57 | PA2 — Port A bit 2 / ADC2 / LCD segment |
| Chân 58 | PA3 — Port A bit 3 / ADC3 / LCD segment |
| Chân 59 | PA4 — Port A bit 4 / ADC4 / LCD segment |
| Chân 60 | PA5 — Port A bit 5 / ADC5 / LCD segment |
| Chân 61 | PA6 — Port A bit 6 / ADC6 / LCD segment |
| Chân 62 | PA7 — Port A bit 7 / ADC7 / LCD segment |
| Chân 63 | VCC — Digital supply voltage |
| Chân 64 | GND — Ground |
Ứng dụng tiêu biểu
ATMEGA169V-8AI phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATMEGA169V-8AI — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Integrated LCD controller with internal step-up voltage (vsATMEGA165V-8AI)
- picoPower migration path at zero PCB change (vsATMEGA169PV-8AUR)
- Wide 1.8V to 5.5V supply range (vsATMEGA169P-15AT (16MHz grade))
- Trade-off: only 16KB Flash / 1KB SRAM (vsATMEGA325V-8AI)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.