ATMEGA162V-1MC - 8-bit AVR MCU, 16KB Flash 1MHz | Microchip
MPN： ATMEGA162V-1MC ✓ 啟用中ATMEGA162V-1MC 概覽
An 8-bit AVR microcontroller is a Harvard-architecture processor that executes most instructions in a single clock cycle, achieving throughput close to 1 MIPS per MHz. Within the power-management hierarchy of embedded systems, the microcontroller unit (MCU) sits at the center of the control chain, integrating CPU, program memory, data memory, timers, and communication peripherals in one chip, reducing bill-of-materials count versus discrete MCU-plus-logic designs.
Key features include an external memory interface supporting up to 64KB of optional external SRAM, 35 general purpose I/O lines, and a JTAG interface providing Boundary-scan capability, on-chip debugging, and in-system programming. The Flash memory offers 1,000 write/erase cycles with true Read-While-Write operation, and an optional boot code section with independent lock bits enables In-System Programming by an on-chip boot program.
The AVR enhanced RISC core pairs 32 general purpose working registers directly with the ALU, allowing single-cycle register-to-register operations. Peripherals include four flexible Timer/Counters with compare modes, two USARTs for serial communication, an SPI interface, a 10-bit ADC, and an analog comparator, giving the ATmega162 balanced capability for mixed serial/parallel control tasks. The wide 1.8V to 5.5V supply range of the V-grade variant suits battery-powered and 5V industrial designs alike.
Typical applications include industrial automation control nodes, battery-powered instrumentation, and legacy serial communication bridges where dual USARTs and an external memory interface are required. The 1 MHz speed grade targets low-noise, low-power designs rather than high-throughput processing.
Design consideration: the V suffix denotes the 1.8V-5.5V supply range and 1 MHz maximum frequency; if your design runs at 3.3V and needs more than 1 MHz, choose the L-grade (up to 8 MHz) or standard grade instead - the suffix determines both speed and voltage limits.
This page synthesizes distributor pricing context, same-package drop-in alternatives, and practical design notes not found together in the manufacturer datasheet.
直接替換替代品，適用於 ATMEGA162V-1MC — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATMEGA162V-1MC （相同外形與佔位） — 差異在於 Package, Core Architecture, Supply Voltage Range, EEPROM, SRAM.
ATMEGA162L-8MC
✅ 直接替換聯絡詢價
查看資料表 →ATMEGA162-16MC
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ATMEGA162-16MUR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ATMEGA162V-1MC 最大額定值與電氣特性
| Core Architecture | 8-bit AVR RISC |
| Core Size | 8-bit |
| 最大時脈頻率 | 1 MHz |
| Program Memory Size | 16KB (8K x 16) Flash |
| Flash Write/Erase Endurance | 1,000 cycles |
| SRAM Size | 1KB |
| EEPROM Size | 512B |
| Supply Voltage Range | 1.8 V to 5.5 V |
| External Memory Interface | Up to 64KB external memory |
| General Purpose I/O | 35 I/O lines |
| Working Registers | 32 general purpose registers |
| Timers/Counters | 4 flexible Timer/Counters with compare modes |
| JTAG Interface | Boundary-scan, on-chip debug, programming |
| 封裝 | 44-VQFN (7x7 mm) |
| 安裝類型 | Surface Mount |
| MIPS Rating | Up to 1 MIPS per MHz |
ATMEGA162V-1MC 44-vqfn (7x7 mm) 腳位配置指南
ATMEGA162V-1MC（44-vqfn (7x7 mm) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： ATMEGA162V-1MC.
請參閱 資料表 以查看完整腳位配置。
典型應用
ATMEGA162V-1MC 適用於 6 應用s: Battery-Powered Industrial Sensors, Dual-Serial Communication Bridges, External Memory Expansion Systems, Legacy AVR System Maintenance, Motor Control and Timer-Based Automation, Embedded Security and Debug-Instrumentation.
Battery-Powered Industrial Sensors
The ATMEGA162V-1MC's 1.8V-5.5V supply range and 1 MHz V-grade speed make it a strong fit for battery-operated industrial sensor nodes, where the AVR core's near-1 MIPS-per-MHz efficiency lets the system run at a low clock and still complete sampling, filtering, and communication tasks. Its 1KB SRAM handles modest buffering, and the 512B EEPROM stores calibration coefficients that survive power loss. Sleep modes plus slow-clock operation minimize average current draw. The 44-VQFN (7x7 mm) package conserves PCB area in compact probe housings, while 35 GPIO lines drive status LEDs, switches, and level translation directly without external glue logic.
推薦
Dual-Serial Communication Bridges
With two independent USARTs, the ATMEGA162V-1MC is well suited to protocol-conversion bridges such as RS-232-to-RS-485 gateways or modem front-ends. Each USART can run at different baud rates, letting the MCU stream data between two serial domains while the 1 MHz clock keeps radiated emissions low - valuable in electrically noisy plants. The 16KB Flash accommodates buffered protocol stacks and CRC routines, and the JTAG interface supports on-chip debugging of concurrent channel code. At the V-grade's 1 MHz limit, sustained throughput is modest, so this application fits low-speed telemetry links rather than megabit-class transfers.
推薦
External Memory Expansion Systems
The ATmega162 is unusual among compact AVRs in offering a parallel external memory interface addressing up to 64KB beyond its internal 1KB SRAM. In the ATMEGA162V-1MC, Port A forms the multiplexed address/data bus and Port C supplies upper address bits, allowing a single external SRAM such as a 32Kx8 device to extend data storage for logging applications. This suits battery dataloggers that must retain weeks of samples. Designers must budget a latch (e.g., 74x573) for address demultiplexing and verify SRAM access times against the conservative 1 MHz bus timing of the V-grade device.
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Legacy AVR System Maintenance
Many installed industrial products built around the Atmel ATmega162 in the 44-pin MLF/VQFN footprint require maintenance sourcing as original stock ages. The ATMEGA162V-1MC serves as a form-fit-function replacement in boards specified for the V-grade, and its JTAG port allows existing firmware images to be re-flashed in-circuit without desoldering. Because Microchip continues the ATmega162 family, engineers can move to the ATMEGA162L-8MC grade on the identical footprint when the supply is 2.7V or higher, gaining clock headroom while preserving the PCB layout and test fixtures.
推薦
Motor Control and Timer-Based Automation
The four flexible Timer/Counters with compare modes in the ATMEGA162V-1MC support PWM generation, frequency measurement, and event capture needed in small automation equipment such as valve controllers, conveyor counters, and fan-speed regulation. Two 8-bit and two 16-bit timers allow simultaneous independent timing domains, while compare outputs drive power stages through external MOSFET drivers. The 35 GPIO lines handle limit switches and operator interfaces. At 1 MHz, PWM carrier frequencies are low, suiting relay- and slow-PWM-based control rather than high-frequency switching; the 16 MHz grade suits faster loops on the same footprint.
推薦
Embedded Security and Debug-Instrumentation
The JTAG interface of the ATMEGA162V-1MC provides Boundary-scan testing, on-chip debugging, and protected in-system programming, making the device suitable for instrumentation and equipment whose service procedures require field firmware updates. The optional boot code section with independent lock bits enables an on-chip boot program to update application Flash safely, while lock bits protect intellectual property. Boundary-scan chain access through the 44-VQFN package supports production test of dense boards where physical probe access is impractical, and the wide 1.8V-5.5V supply allows reuse across several product voltage variants.
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推薦產品摘要
工程參考資料，適用於 ATMEGA162V-1MC — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ATMEGA162L-8MC | ATMEGA162-16MC | ATMEGA162-16MUR |
|---|---|---|---|---|
| Package | 44-VQFN (7x7) | 44-VQFN (7x7) - same | 44-VQFN (7x7) - same | 44-VQFN (7x7) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max Clock Frequency | 1 MHz | 8 MHz | 16 MHz | 16 MHz |
| Supply Voltage | 1.8 V to 5.5 V | 2.7 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| Flash Memory | 16KB | 16KB | 16KB | 16KB |
| SRAM / EEPROM | 1KB / 512B | 1KB / 512B | 1KB / 512B | 1KB / 512B |
| JTAG Interface | Yes | Yes | Yes | Yes |
| Typical Use Case | Ultra-low-voltage / low-EMI designs | 3.3V/5V general purpose | 5V high-throughput | 5V high-volume reel assembly |
主要差異化特點
- Widest supply range in the ATmega162 family (對比ATMEGA162L-8MC)
- Lowest electromagnetic emission option (對比ATMEGA162-16MC)
- External memory interface rare in compact AVRs (對比ATMEGA162L-8MC)
設計說明
The V-grade device alone in the ATmega162 family operates down to 1.8V, but maximum clock falls to 1 MHz. Estimated: dynamic power scales roughly linearly with frequency and with V^2, so running at 1.8V/1 MHz versus 5V/16 MHz reduces core dynamic energy by roughly two orders of magnitude - a key reason to choose this grade for coin-cell or single-cell Li designs. Decouple VCC and AVCC separately with 100 nF ceramics placed within 5 mm of each pin, and tie AVCC to VCC through a low-pass filter when the ADC is used.
The 44-VQFN (7x7 mm) MLF-style package exposes a die-attach pad on the underside that must be soldered to a grounded thermal pad array on the PCB for mechanical reliability and heat spreading; this pad is also the primary ground connection. Use an array of thermal vias to the ground plane. Verify your footprint against the Microchip MLF-44 drawing - several legacy footprints in CAD libraries use 0.5 mm versus 0.65 mm lead pitches that will not align. Inspect solder joints via X-ray since perimeter pads are hidden under the package body.
Ordering-code confusion is the most frequent sourcing error with this part: the suffix controls package AND grade. MC is the 44-VQFN, AC is TQFP44, PI/PC are PDIP; V/L/no-letter control voltage and speed. A substituted AC part will not mount on an MC footprint. Also confirm JTAG fuse state: JTAGEN is factory-enabled and the JTAG pins (TCK/TMS/TDO/TDI) are not available as GPIO unless the fuse is cleared - designs expecting 4 extra I/O lines must account for this in firmware and schematics.
合規資訊
Compliance attributes for this legacy ordering code were not stated in the provided web data; verify via Microchip's product page material declaration before new EU-market designs.