ATMEGA169V-8AI - 8-bit AVR MCU, 16KB Flash, LCD | Microchip
料号： ATMEGA169V-8AI ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 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 概述
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.
直接替换替代料： ATMEGA169V-8AI ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ATMEGA169V-8AI （相同外形与封装尺寸） ——差异在于 Package, Core Architecture, Operating Temperature, Series, EEPROM.
快速对比工具——选择替代料号进行并排对比：
ATMEGA169PV-8AUR
✅ 直接替换✓ 有现货
$4.16 / 个
查看数据手册 →ATMEGA169P-15AT
✅ 直接替换✓ 有现货
$3.6 / 个
查看数据手册 →ATMEGA169V-8AU
✅ 直接替换📋 参考替代料（不在目录中）
ATMEGA165V-8AI
✅ 直接替换✓ 有现货
$2.85 / 个
查看数据手册 →ATMEGA325V-8AI
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.2 / 个
查看数据手册 →ATMEGA169V-8AI 最大额定值与电气特性
| 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) |
| 工作温度 | -40C to +85C (I grade, industrial) |
| 封装 | 64-TQFP (14x14 mm) |
| 安装类型 | Surface Mount |
ATMEGA169V-8AI 引脚配置
| 引脚 1 | PE0 — Port E bit 0 / PDI / RXD0 |
| 引脚 2 | PE1 — Port E bit 1 / PDO / TXD0 |
| 引脚 3 | PE2 — Port E bit 2 / AIN0 / XCK0 |
| 引脚 4 | PE3 — Port E bit 3 / OC3A / AIN1 |
| 引脚 5 | PE4 — Port E bit 4 / OC3B / INT4 |
| 引脚 6 | PE5 — Port E bit 5 / OC3C / INT5 |
| 引脚 7 | PE6 — Port E bit 6 / T3 / INT6 |
| 引脚 8 | PE7 — Port E bit 7 / ICP3 / INT7 / CLKO |
| 引脚 9 | VCC — Digital supply voltage |
| 引脚 10 | GND — Ground |
| 引脚 11 | PG0 — Port G bit 0 / WR |
| 引脚 12 | PG1 — Port G bit 1 / RD |
| 引脚 13 | PG2 — Port G bit 2 / ALE / TOSC2 |
| 引脚 14 | PG3 — Port G bit 3 / TOSC1 |
| 引脚 15 | PG4 — Port G bit 4 / TOSC2 |
| 引脚 16 | PC0 — Port C bit 0 / LCD segment / TCK |
| 引脚 17 | PC1 — Port C bit 1 / LCD segment / TMS |
| 引脚 18 | PC2 — Port C bit 2 / LCD segment / TDO |
| 引脚 19 | PC3 — Port C bit 3 / LCD segment / TDI |
| 引脚 20 | PC4 — Port C bit 4 / LCD segment / T4 |
| 引脚 21 | PC5 — Port C bit 5 / LCD segment / OC1A |
| 引脚 22 | PC6 — Port C bit 6 / LCD segment / OC1B |
| 引脚 23 | PC7 — Port C bit 7 / LCD segment / ICP1 |
| 引脚 24 | PD0 — Port D bit 0 / LCD segment / SCL (INT0) |
| 引脚 25 | PD1 — Port D bit 1 / LCD segment / SDA (INT1) |
| 引脚 26 | PD2 — Port D bit 2 / LCD segment / RXD1 (INT2) |
| 引脚 27 | PD3 — Port D bit 3 / LCD segment / TXD1 (INT3) |
| 引脚 28 | PD4 — Port D bit 4 / LCD segment / ICP1 |
| 引脚 29 | PD5 — Port D bit 5 / LCD segment / XCK1 |
| 引脚 30 | PD6 — Port D bit 6 / LCD segment / OC2A |
| 引脚 31 | PD7 — Port D bit 7 / LCD segment / OC0A |
| 引脚 32 | PB0 — Port B bit 0 / LCD segment / SS |
| 引脚 33 | PB1 — Port B bit 1 / LCD segment / SCK |
| 引脚 34 | PB2 — Port B bit 2 / LCD segment / MOSI |
| 引脚 35 | PB3 — Port B bit 3 / LCD segment / MISO |
| 引脚 36 | PB4 — Port B bit 4 / LCD segment / OC0 |
| 引脚 37 | PB5 — Port B bit 5 / LCD segment / OC1A |
| 引脚 38 | PB6 — Port B bit 6 / LCD segment / OC1B |
| 引脚 39 | PB7 — Port B bit 7 / LCD segment / OC2 |
| 引脚 40 | XTAL1 — Inverting oscillator amplifier input / internal clock input |
| 引脚 41 | XTAL2 — Inverting oscillator amplifier output |
| 引脚 42 | RESET — Active-low reset input |
| 引脚 43 | AVCC — ADC and analog supply voltage |
| 引脚 44 | PF0 — Port F bit 0 / ADC0 / LCD segment |
| 引脚 45 | PF1 — Port F bit 1 / ADC1 / LCD segment |
| 引脚 46 | PF2 — Port F bit 2 / ADC2 / LCD segment |
| 引脚 47 | PF3 — Port F bit 3 / ADC3 / LCD segment |
| 引脚 48 | PF4 — Port F bit 4 / ADC4 / TCK / LCD segment |
| 引脚 49 | PF5 — Port F bit 5 / ADC5 / TMS / LCD segment |
| 引脚 50 | PF6 — Port F bit 6 / ADC6 / TDO / LCD segment |
| 引脚 51 | PF7 — Port F bit 7 / ADC7 / TDI / LCD segment |
| 引脚 52 | AREF — Analog reference voltage for ADC |
| 引脚 53 | GND — Ground |
| 引脚 54 | GND — Ground |
| 引脚 55 | PA0 — Port A bit 0 / ADC0 / LCD segment / COM terminal |
| 引脚 56 | PA1 — Port A bit 1 / ADC1 / LCD segment |
| 引脚 57 | PA2 — Port A bit 2 / ADC2 / LCD segment |
| 引脚 58 | PA3 — Port A bit 3 / ADC3 / LCD segment |
| 引脚 59 | PA4 — Port A bit 4 / ADC4 / LCD segment |
| 引脚 60 | PA5 — Port A bit 5 / ADC5 / LCD segment |
| 引脚 61 | PA6 — Port A bit 6 / ADC6 / LCD segment |
| 引脚 62 | PA7 — Port A bit 7 / ADC7 / LCD segment |
| 引脚 63 | VCC — Digital supply voltage |
| 引脚 64 | GND — Ground |
典型应用
ATMEGA169V-8AI 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： ATMEGA169V-8AI ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Integrated LCD controller with internal step-up voltage （对比 ATMEGA165V-8AI)
- picoPower migration path at zero PCB change （对比 ATMEGA169PV-8AUR)
- Wide 1.8V to 5.5V supply range （对比 ATMEGA169P-15AT (16MHz grade))
- Trade-off: only 16KB Flash / 1KB SRAM （对比 ATMEGA325V-8AI)
设计说明
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.
合规信息
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.