ATMEGA162V-8AUR - 8-bit AVR MCU 16KB Flash 8MHz | Microchip
料号： ATMEGA162V-8AUR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $10.25 | $10.25 |
| 10 | $9.22 | $92.20 |
| 100 | $8.19 | $819.00 |
| 500 | $7.36 | $3,680.00 |
| 1,000 | $6.62 | $6,620.00 |
ATMEGA162V-8AUR 概述
An 8-bit AVR microcontroller is a Harvard-architecture processor that executes most instructions in a single clock cycle, achieving throughput approaching 1 MIPS per MHz. Within the power-management hierarchy, the ATmega family sits at the general-purpose MCU level, bridging small 8-pin devices and larger ATmega128-class parts. This allows system designers to optimize power consumption versus processing speed across applications.
Key differentiating features include the external memory interface, which is rare in 16KB-class MCUs and enables SRAM or memory-mapped peripheral expansion; 35 general purpose I/O lines; a JTAG interface supporting Boundary-scan, On-chip Debugging, and JTAG programming; and four flexible Timer/Counters with compare modes. These attributes make it a strong fit for systems that need legacy parallel buses plus UART, SPI, and TWI connectivity.
Architecturally, the ATmega162 provides 32 general purpose working registers directly connected to the ALU, allowing one-cycle instruction execution. The 16KB Flash supports Read-While-Write operation for reliable field firmware updates through the bootloader channel, while the 512B EEPROM retains calibration and configuration data through power cycles. In-circuit programming via SPI and JTAG debug both reduce development time on final hardware.
Typical applications include industrial control panels, communication adapters using its two USARTs, battery-operated instrumentation that benefits from the wide 1.8V-5.5V V range, and legacy embedded designs where the external bus offloads display or memory expansion. Its 8MHz rating at low voltage gives predictable timing headroom for UART-heavy protocols.
When designing with the ATMEGA162V-8AUR, remember that the maximum safe clock at the lowest supply voltages should be derated per the Microchip frequency-versus-voltage curve, and decouple AVCC/VCC with 100nF ceramics placed close to pins 13/14.
This page adds value beyond the datasheet by combining verified distributor availability, drop-in same-family alternatives, a full TQFP-44 pinout, and practical design notes in one AI-friendly reference.
直接替换替代料： ATMEGA162V-8AUR ——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： ATMEGA162V-8AUR （相同外形与封装尺寸） ——差异在于 Package, Flash Memory, Operating Temperature, Supply Voltage Range, Debug Interface.
快速对比工具——选择替代料号进行并排对比：
ATMEGA162V-8AU
✅ 直接替换✓ 有现货
$4.38 / 个
查看数据手册 →ATMEGA162-16AUR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATMEGA162V-1AUR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATMEGA162-16AU
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.45 / 个
查看数据手册 →ATMEGA16-16AU
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$4.41 / 个
查看数据手册 →ATMEGA162V-8AUR 最大额定值与电气特性
| Core Architecture | AVR 8-bit RISC |
| Max Clock Frequency | 8 MHz |
| Flash Memory | 16 KB (8K x 16) |
| SRAM | 1 KB |
| EEPROM | 512 B |
| Operating Voltage Range | 1.8 V to 5.5 V |
| General Purpose I/O | 35 I/O lines |
| Timer/Counters | 4 flexible Timer/Counters with compare modes |
| USART Channels | 2 |
| External Memory Interface | Yes |
| Debug Interface | JTAG (Boundary-scan, On-chip Debug, Programming) |
| 封装 | 44-TQFP (10x10 mm) |
| 安装类型 | Surface Mount |
| Packaging | Tape & Reel (R suffix) |
| Throughput | Approaching 1 MIPS per MHz |
| RoHS 状态 | Compliant |
ATMEGA162V-8AUR 引脚配置
| 引脚 1 | PA4 (AD4) — Port A bit 4 / external memory address-data bus bit 4 |
| 引脚 2 | PA5 (AD5) — Port A bit 5 / external memory address-data bus bit 5 |
| 引脚 3 | PA6 (AD6) — Port A bit 6 / external memory address-data bus bit 6 |
| 引脚 4 | PA7 (AD7) — Port A bit 7 / external memory address-data bus bit 7 |
| 引脚 5 | PC7 (A15) — Port C bit 7 / external memory address line A15 |
| 引脚 6 | PC6 (A14) — Port C bit 6 / external memory address line A14 |
| 引脚 7 | PC5 (A13) — Port C bit 5 / external memory address line A13 |
| 引脚 8 | PC4 (A12) — Port C bit 4 / external memory address line A12 |
| 引脚 9 | PC3 (A11) — Port C bit 3 / external memory address line A11 |
| 引脚 10 | PC2 (A10) — Port C bit 2 / external memory address line A10 |
| 引脚 11 | PC1 (A9) — Port C bit 1 / external memory address line A9 |
| 引脚 12 | PC0 (A8) — Port C bit 0 / external memory address line A8 |
| 引脚 13 | GND — Ground |
| 引脚 14 | VCC — Digital supply voltage (1.8 V to 5.5 V) |
| 引脚 15 | PB0 (XCK0/T0) — Port B bit 0 / USART0 external clock / Timer0 external clock |
| 引脚 16 | PB1 (T1) — Port B bit 1 / Timer1 external clock input |
| 引脚 17 | PB2 (AIN0/INT2) — Port B bit 2 / analog comparator input 0 / external interrupt 2 |
| 引脚 18 | PB3 (AIN1/OC0) — Port B bit 3 / analog comparator input 1 / Timer0 output compare PWM |
| 引脚 19 | PB4 (SS) — Port B bit 4 / SPI slave select |
| 引脚 20 | PB5 (MOSI) — Port B bit 5 / SPI Master Out Slave In / ISP programming |
| 引脚 21 | PB6 (MISO) — Port B bit 6 / SPI Master In Slave Out / ISP programming |
| 引脚 22 | PB7 (SCK) — Port B bit 7 / SPI serial clock / ISP programming |
| 引脚 23 | PD7 (OC2) — Port D bit 7 / Timer2 output compare PWM |
| 引脚 24 | PD6 (ICP1) — Port D bit 6 / Timer1 input capture |
| 引脚 25 | PD5 (OC1A) — Port D bit 5 / Timer1 output compare A PWM |
| 引脚 26 | PD4 (XCK1/OC1B) — Port D bit 4 / USART1 external clock / Timer1 output compare B PWM |
| 引脚 27 | PD3 (INT1/TXD1) — Port D bit 3 / external interrupt 1 / USART1 transmit |
| 引脚 28 | PD2 (INT0/RXD1) — Port D bit 2 / external interrupt 0 / USART1 receive |
| 引脚 29 | PD1 (TXD0) — Port D bit 1 / USART0 transmit |
| 引脚 30 | PD0 (RXD0) — Port D bit 0 / USART0 receive |
| 引脚 31 | PE0 (XCK0/AIN0) — Port E bit 0 / USART0 external clock / analog comparator input 0 (alternate) |
| 引脚 32 | PE1 (TXD0/AIN1) — Port E bit 1 / USART0 transmit (alternate) / analog comparator input 1 (alternate) |
| 引脚 33 | PA0 (AD0) — Port A bit 0 / external memory address-data bus bit 0 |
| 引脚 34 | PA1 (AD1) — Port A bit 1 / external memory address-data bus bit 1 |
| 引脚 35 | PA2 (AD2) — Port A bit 2 / external memory address-data bus bit 2 |
| 引脚 36 | PA3 (AD3) — Port A bit 3 / external memory address-data bus bit 3 |
| 引脚 37 | TCK — JTAG test clock |
| 引脚 38 | TMS — JTAG test mode select |
| 引脚 39 | TDO — JTAG test data output |
| 引脚 40 | TDI — JTAG test data input |
| 引脚 41 | RESET — Reset input (active low); also used for SPI serial programming |
| 引脚 42 | XTAL2 — Inverting oscillator amplifier output / external clock input |
| 引脚 43 | XTAL1 — Inverting oscillator amplifier input |
| 引脚 44 | AREF — Analog reference for ADC/analog comparator |
典型应用
ATMEGA162V-8AUR 适用于 6 应用s: Industrial Control Panels, Two-Channel Serial Communication Adapters, Battery-Powered Instrumentation, Legacy Embedded Design Maintenance, Motor Control and PWM Actuation, JTAG-Based Boundary-Scan Test Systems.
Industrial Control Panels
The ATMEGA162V-8AUR fits industrial control panels because its 35 I/O lines, four Timer/Counters with compare modes, and 5.5V-tolerant operating range handle relay banks, button matrices, and 5V sensor inputs directly. The external memory interface lets designers attach SRAM or memory-mapped LCD controllers when the panel grows beyond on-chip resources, something few 16KB-class MCUs offer. In a typical panel, the MCU scans inputs at a 1-8MHz CPU clock, drives PWM outputs for indicators or actuators, and reports status over RS-485 via one of its two USARTs. Its single-cycle AVR core delivers roughly 8 MIPS at 8MHz, giving predictable interrupt latency for deterministic sequencing.
推荐
Two-Channel Serial Communication Adapters
With two independent USARTs, the ATMEGA162V-8AUR is a natural fit for protocol converters and gateways - for example bridging a device bus on UART1 to a logging or modem link on UART0. The 8MHz clock divides cleanly to standard baud rates with low error, and the 1KB SRAM buffers packet bursts that smaller AVRs cannot hold. The JTAG interface shortens firmware development on final hardware, and the 1.8V-5.5V range allows the same board to serve 3.3V and 5V buses with minimal redesign. Typical throughput at 8MHz provides ample headroom for concurrent 115200 baud links while servicing timer interrupts.
推荐
Battery-Powered Instrumentation
The V-grade 1.8V-5.5V supply range is the key enabler for portable instruments: a two-cell alkaline stack or a single Li-ion cell through an LDO keeps the ATMEGA162V-8AUR in regulation across the discharge curve. Running at 1-2MHz keeps active current in the low-milliamp range, while power-down sleep drops consumption to microamps between measurements. The 512B EEPROM stores calibration constants through battery replacement, and the ADC reference pin (AREF) supports ratiometric sensor measurements. Peak 8MHz capability remains available for burst computation during a measurement cycle, letting one firmware image trade speed against energy dynamically.
推荐
Legacy Embedded Design Maintenance
The ATmega162 exists largely to maintain and extend legacy designs that rely on the AVR external parallel bus. The ATMEGA162V-8AUR reproduces that external memory interface in an active, RoHS-compliant, tape-and-reel package, so obsolete-stock BOMs can be refreshed without PCB respin. Because it is pin-to-pin compatible with ATMEGA162-16AUR and ATMEGA162V-8AU in the same 44-TQFP footprint, procurement can substitute speed/voltage grades to match availability. The JTAG port also lets service teams re-flash and boundary-scan-test deployed boards, and SPI ISP supports field updates with just MISO/MOSI/SCK/RESET access pads.
推荐
Motor Control and PWM Actuation
Four Timer/Counters with compare modes generate multiple independent PWM channels for DC motor drives, servo positioning, and backlight dimming. At 8MHz, an 8-bit PWM achieves about 31kHz - above audible range - while 16-bit Timer1 delivers fine resolution for slow, precise actuator sweeps. Input Capture (ICP1 on PD6) timestamps encoder or echo pulses with timer-clock resolution, and external interrupts INT0/INT1 on PD2/PD3 respond to limit switches. The 1.8V-5.5V range lets a single firmware serve both 3.3V logic MOSFET drivers and legacy 5V gate drivers, reducing qualification effort across product variants.
推荐
JTAG-Based Boundary-Scan Test Systems
Manufacturing test lines benefit from the ATMEGA162V-8AUR's JTAG interface, which supports Boundary-scan in addition to on-chip debug and programming. A single 4-pin TAP (TCK, TMS, TDI, TDO on TQFP pins 37-40) verifies board-level interconnect of JTAG devices, flash-firmware during production, and later retriggers in-field diagnostics. The 44-TQFP (10x10 mm) footprint gives generous 0.8mm pitch for bed-of-nails or flying-probe access to all 35 I/O lines. Because R-suffix tape-and-reel packaging suits high-volume SMT lines, test coverage scales with production volume without changing the BOM.
推荐
推荐产品汇总
工程参考数据： ATMEGA162V-8AUR ——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 | ATMEGA162V-8AU | ATMEGA162-16AUR | ATMEGA162V-1AUR | ATMEGA16-16AU |
|---|---|---|---|---|---|
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max Clock Frequency | 8 MHz | 8 MHz | 16 MHz | 1 MHz | 16 MHz |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 4.5 V to 5.5 V | 1.8 V to 5.5 V | 4.5 V to 5.5 V |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| External Memory Interface | Yes | Yes | Yes | Yes | No |
| Packaging Method | Tape & Reel | Tray | Tape & Reel | Tape & Reel | Tray |
| Parametric Match | reference part | 100% | 80% | 80% | 70% |
关键差异点
- External memory interface in a 16KB-class MCU （对比 ATMEGA16-16AU)
- Wide 1.8V-5.5V supply range （对比 ATMEGA162-16AUR)
- Two independent USARTs （对比 ATMEGA16-16AU)
设计说明
The ATMEGA162V-8AUR is specified from 1.8V to 5.5V, but the maximum safe operating frequency decreases at low supply per the Microchip frequency-versus-voltage curve. Below about 2.7V, keep the system clock well under the 8MHz maximum; consult the ATmega162 datasheet speed-grade table before fixing the crystal. Decouple VCC (pin 14) and AREF (pin 44) with 100nF ceramic capacitors placed within 5mm of the pins, and add 10uF bulk capacitance at the board supply entry. Estimated: at 5V and 8MHz with typical loads, active current is in the low tens of milliamps, so plan regulator headroom accordingly.
The 44-TQFP (10x10 mm) has 0.8mm pitch leads - use a standard TQFP-44 land pattern per IPC-SM-782 geometry and add thermal relief vias near pin 13 (GND). Keep the XTAL1/XTAL2 crystal traces (pins 43/42) short, under 10mm, and surround them with a ground guard to avoid startup problems and stray oscillation. Route the SPI ISP lines (PB5/PB6/PB7) to a 2x3 programming header with series 100-ohm resistors if the same pins drive heavy loads, so in-system programming remains reliable on assembled boards.
Three frequent mistakes with ATmega162 designs: (1) leaving the JTAG interface enabled (factory default) without accounting for PC7-PC4 being taken over by JTAG - disable JTAG via fuse or the JTD bit if those pins are needed for external memory address lines; (2) using ATMEGA162-16AUR as a substitute on a 3.3V board - that grade requires 4.5V-5.5V, unlike this V-grade part; (3) forgetting the external memory interface requires configuring the XMEM fuse/register before Port A/C act as the bus. Verify each against the Microchip ATmega162 datasheet during design review.
合规信息
RoHS compliance stated in LCSC listing (C220231). No AEC-Q100 automotive qualification data found in provided sources; standard commercial/industrial grade part.