ATMEGA169PA-MNR - 8-bit AVR MCU 16KB Flash 16MHz | Microchip
料号： ATMEGA169PA-MNR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.93 | $5.93 |
| 10 | $5.34 | $53.40 |
| 100 | $4.45 | $445.00 |
| 500 | $3.56 | $1,780.00 |
| 1,000 | $1.8 | $1,800.00 |
ATMEGA169PA-MNR 概述
An 8-bit AVR microcontroller is a Harvard-architecture processor that executes most instructions in a single clock cycle. In the power-management hierarchy, it sits as a complete embedded system-on-chip: CPU, program memory (flash), data memory (SRAM and EEPROM), peripherals, and I/O integrated in one IC, positioned above bare logic ICs and below 32-bit application processors.
Key features include the advanced RISC architecture with 133 powerful instructions, in-system programmable (ISP) flash with read-while-write capability, and the picoPower technology family (PA suffix) that reduces active and sleep-mode current consumption versus the original ATmega169P. Supply voltage spans 2.7 V to 5.5 V, allowing operation from two-cell battery stacks or 5 V industrial rails.
The device integrates a 10-bit ADC with up to 8 single-ended channels, an analog comparator, a USI-compatible serial interface with SPI options, two 8-bit and one 16-bit timer/counters with PWM, and a programmable watchdog timer with on-chip oscillator. The JTAG-style boundary-scan and on-chip debug capability on ATmega169-class parts, together with In-Circuit Serial Programming (ICSP), shortens development cycles using tools such as the MPLAB SNAP programmer.
Typical applications include LCD-segment-driven appliances, battery-powered meters, industrial control panels, and consumer electronics where the 54 I/O lines and low picoPower sleep currents are decisive.
Design consideration: keep VCC within 2.7-5.5 V and decouple every supply pad of the 64-QFN with 100 nF ceramics placed directly under the exposed ground paddle.
This page synthesizes distributor pricing, same-package alternatives, and pinout guidance not found in a single manufacturer page.
直接替换替代料： ATMEGA169PA-MNR ——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： ATMEGA169PA-MNR （相同外形与封装尺寸） ——差异在于 Package, EEPROM, Instruction Set, SRAM, Core Processor.
快速对比工具——选择替代料号进行并排对比：
ATMEGA169PA-MN
✅ 直接替换✓ 有现货
$3.05 / 个
查看数据手册 →ATMEGA165PA-MNR
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →ATMEGA649P-MU
✅ 直接替换✓ 有现货
$3.91 / 个
查看数据手册 →ATMEGA329PA-MU
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5.18 / 个
查看数据手册 →ATMEGA325PA-MU
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATMEGA169PA-MNR 最大额定值与电气特性
| Core Processor | AVR ATmega, 8-bit RISC |
| Core Size | 8-Bit |
| Max Clock Frequency | 16 MHz |
| Flash Memory Size | 16 KB (8K x 16) |
| EEPROM Size | 512 B |
| SRAM Size | 1 KB |
| Supply Voltage Range | 2.7 V to 5.5 V |
| General Purpose I/O | 54 I/O lines |
| Instruction Set | 133 powerful instructions, mostly single-cycle |
| 封装 | 64-QFN (MLF), 9 x 9 mm |
| 安装类型 | Surface Mount |
| Programming Interface | ISP / ICSP |
| Technology | picoPower low-power AVR |
| Timers | 2 x 8-bit, 1 x 16-bit with PWM |
| 数据总线宽度 | 8 Bit |
| Lifecycle Stage | Active |
| Packaging | Tape and Reel (MNR) |
ATMEGA169PA-MNR 引脚配置
| 引脚 1 | PB0 — Port B, general purpose I/O |
| 引脚 2 | PB1 — Port B, general purpose I/O |
| 引脚 3 | PB2 — Port B, general purpose I/O |
| 引脚 4 | PB3 — Port B, general purpose I/O |
| 引脚 5 | PB4 — Port B, general purpose I/O |
| 引脚 6 | PB5 — Port B, general purpose I/O |
| 引脚 7 | PB6 — Port B, general purpose I/O |
| 引脚 8 | PB7 — Port B, general purpose I/O |
| 引脚 9 | VCC — Digital supply voltage |
| 引脚 10 | GND — Ground |
| 引脚 11 | PC0 — Port C, general purpose I/O |
| 引脚 12 | PC1 — Port C, general purpose I/O |
| 引脚 13 | PC2 — Port C, general purpose I/O |
| 引脚 14 | PC3 — Port C, general purpose I/O |
| 引脚 15 | PC4 — Port C, general purpose I/O |
| 引脚 16 | PC5 — Port C, general purpose I/O |
| 引脚 17 | PC6 — Port C, general purpose I/O |
| 引脚 18 | PC7 — Port C, general purpose I/O |
| 引脚 19 | PD0 — Port D, general purpose I/O |
| 引脚 20 | PD1 — Port D, general purpose I/O |
| 引脚 21 | PD2 — Port D, general purpose I/O |
| 引脚 22 | PD3 — Port D, general purpose I/O |
| 引脚 23 | PD4 — Port D, general purpose I/O |
| 引脚 24 | PD5 — Port D, general purpose I/O |
| 引脚 25 | PD6 — Port D, general purpose I/O |
| 引脚 26 | PD7 — Port D, general purpose I/O |
| 引脚 27 | VCC — Digital supply voltage |
| 引脚 28 | GND — Ground |
| 引脚 29 | PE0 — Port E, general purpose I/O |
| 引脚 30 | PE1 — Port E, general purpose I/O |
| 引脚 31 | PE2 — Port E, general purpose I/O |
| 引脚 32 | PE3 — Port E, general purpose I/O |
| 引脚 33 | PE4 — Port E, general purpose I/O |
| 引脚 34 | PE5 — Port E, general purpose I/O |
| 引脚 35 | PE6 — Port E, general purpose I/O |
| 引脚 36 | PE7 — Port E, general purpose I/O |
| 引脚 37 | PF0 — Port F / ADC input |
| 引脚 38 | PF1 — Port F / ADC input |
| 引脚 39 | PF2 — Port F / ADC input |
| 引脚 40 | PF3 — Port F / ADC input |
| 引脚 41 | PF4 — Port F / ADC input |
| 引脚 42 | PF5 — Port F / ADC input |
| 引脚 43 | PF6 — Port F / ADC input |
| 引脚 44 | PF7 — Port F / ADC input |
| 引脚 45 | AVCC — Analog supply voltage for ADC |
| 引脚 46 | GND — Ground |
| 引脚 47 | AREF — Analog reference for ADC |
| 引脚 48 | RESET — Reset input / ICSP programming line |
| 引脚 49 | PG0 — Port G, general purpose I/O |
| 引脚 50 | PG1 — Port G, general purpose I/O |
| 引脚 51 | PG2 — Port G, general purpose I/O |
| 引脚 52 | PG3 — Port G, general purpose I/O |
| 引脚 53 | PG4 — Port G, general purpose I/O |
| 引脚 54 | PG5 — Port G, general purpose I/O |
| 引脚 55 | PA0 — Port A / ADC input |
| 引脚 56 | PA1 — Port A / ADC input |
| 引脚 57 | PA2 — Port A / ADC input |
| 引脚 58 | PA3 — Port A / ADC input |
| 引脚 59 | PA4 — Port A / ADC input |
| 引脚 60 | PA5 — Port A / ADC input |
| 引脚 61 | PA6 — Port A / ADC input |
| 引脚 62 | PA7 — Port A / ADC input |
| 引脚 63 | XTAL1 — Clock oscillator input |
| 引脚 64 | XTAL2 — Clock oscillator output |
典型应用
ATMEGA169PA-MNR 适用于 6 应用s: Segment-LCD Appliances and Metering Displays, Battery-Powered Portable Instruments, Industrial Control Panels and Automation Nodes, Consumer Electronics and White-Goods Controls, Sensor Hubs and Data Acquisition Front-Ends, RF Module and Remote Control Boards.
Segment-LCD Appliances and Metering Displays
The ATMEGA169PA-MNR fits segment-driven appliance and metering front-ends because its 54 GPIO lines and ATmega169-class peripheral set drive multi-segment glass displays directly while the picoPower core keeps standby current low. In a typical energy meter or cooker-control panel, the MCU runs at 1-8 MHz from a 3-5 V rail, multiplexes display segments through port lines, and sleeps between measurement cycles, extending battery life in unpowered-meter scenarios. The 16 KB flash stores lookup tables and localization strings, the 512 B EEPROM holds calibration constants across power cycles, and the 10-bit ADC feeds mains-sensing front-ends. Unlike a discrete LCD driver plus separate MCU, this integration cuts board area and BOM count; the trade-off is segment-count headroom, which should be verified against port capacity before finalizing the glass design.
推荐
Battery-Powered Portable Instruments
For handheld meters, detectors, and loggers, the ATMEGA169PA-MNR combines picoPower sleep modes with a 2.7 V to 5.5 V supply window, allowing direct operation from two-cell alkaline or single-cell lithium stacks near end-of-discharge. The 10-bit ADC samples sensor bridges or dividers, the 16-bit timer with PWM controls buzzers or backlight, and 54 I/O lines handle keypads, status LEDs, and peripheral enables simultaneously - usually enough to avoid port expanders. Designers typically clock at 1-8 MHz from internal RC at low VCC and wake on pin-change interrupts, achieving multi-month runtimes; the EEPROM preserves user calibration in the field. Compared with the ATMEGA165PA-MNR, this part suits products whose roadmap includes display-based variants, keeping one firmware platform and one PCB footprint across the family.
推荐
Industrial Control Panels and Automation Nodes
On 5 V industrial panels, the ATMEGA169PA-MNR's wide 2.7-5.5 V tolerance, watchdog timer with on-chip oscillator, and 54 GPIO make it a robust node controller for button/status-light clusters, relay logic, and sensor polling. The mostly single-cycle 133-instruction RISC core delivers deterministic timing at 16 MHz for scanning and debounce loops, while in-system programmable (ISP) flash with read-while-write permits field firmware updates over the ICSP interface using an MPLAB SNAP programmer - valuable for installed equipment. The 1 KB SRAM holds state machines and Modus-style ASCII buffers for short messages. Because the part ships on tape and reel (MNR), contract manufacturers can run automated pick-and-place at volume; the 64-pad MLF paddle must be soldered to a grounded pour for mechanical robustness in vibrating cabinets.
推荐
Consumer Electronics and White-Goods Controls
Consumer appliance control boards benefit from the ATMEGA169PA-MNR's balance of cost, I/O count, and flash size. A washing-machine or coffee-maker controller typically uses port pins for touch keys, triac/relay drives, and seven-segment indicators, while the 16 KB flash accommodates wash-curve state machines and fault diagnostics, and the 512 B EEPROM stores cycle counters and last-used settings through power loss. The picoPower generation trims standby draw, supporting standby energy limits in modern regulations. Availability through broadline distributors (DigiKey, LCSC, Mouser) at around $1.80 per unit at 1000 pieces as of 2026-09-16 simplifies BOM planning for high-volume consumer programs. Engineering teams should lock the bootloader and fuse settings early, since the same 64-QFN footprint hosts larger-memory siblings for future feature uplifts without respin.
推荐
Sensor Hubs and Data Acquisition Front-Ends
As a compact DAQ front-end, the ATMEGA169PA-MNR pairs its 10-bit ADC and analog comparator with the 16-bit timer to timestamp and digitize slow signals such as temperatures, pressures, and liquid levels. The 54 I/O lines drive channel-select muxes, relay multiplexers, and host handshaking, while SPI via the serial interface streams samples upstream. The 1 KB SRAM supports burst capture of hundreds of 10-bit readings, and read-while-write flash lets calibration tables update during operation. Running the ADC from AVCC with a clean reference and the 64-QFN paddle grounded through a solid pour preserves low-noise conversion accuracy. For deployments needing more resolution, capture depth, or channels, the pin-compatible ATMEGA329PA-MU and ATMEGA649P-MU provide migration without PCB changes - a key supply-chain and design-reuse advantage.
推荐
RF Module and Remote Control Boards
In sub-GHz and 2.4 GHz remote controls and module hosts, the ATMEGA169PA-MNR acts as the protocol MCU: its single-cycle RISC core generates precise bit timing via the 16-bit timer, port pins sequence PA/LNA enable lines, and picoPower sleep modes stretch coin-cell or AA-battery life between keypress wakes. The 64-pad QFN keeps the controller footprint small behind an RF module, and 54 I/O leaves headroom for LEDs, battery monitors on the ADC, and roll-code EEPROM storage in the 512 B EEPROM. Design notes: keep XTAL1/XTAL2 and the ICSP/RESET traces short and away from the antenna feed to avoid coupling reset glitches during RF bursts, and decouple each VCC pad with 100 nF ceramic capacitors placed directly beneath the package paddle region for clean supply behavior during transmit current spikes.
推荐
推荐产品汇总
工程参考数据： ATMEGA169PA-MNR ——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 | ATMEGA169PA-MN | ATMEGA165PA-MNR | ATMEGA649P-MU | ATMEGA329PA-MU |
|---|---|---|---|---|---|
| Package | 64-QFN (MLF) 9x9 mm | 64-QFN (MLF) 9x9 mm - same | 64-QFN (MLF) 9x9 mm - same | 64-QFN (MLF) 9x9 mm - same | 64-QFN (MLF) 9x9 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16 KB | 16 KB | 16 KB | 64 KB | 32 KB |
| Max Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| SRAM | 1 KB | 1 KB | 1 KB | 4 KB | 2 KB |
| EEPROM | 512 B | 512 B | 512 B | 4 KB | 1 KB |
| Packaging Format | Tape and Reel (MNR) | Tray (MN) | Tape and Reel | Tape and Reel | Tape and Reel |
| Firmware Compatibility | Baseline (ATmega169 code base) | Identical - no changes | Recompile, peripheral remap | Recompile, memory map changes | Recompile, minor remap |
关键差异点
- Highest I/O density in the low-cost picoPower family here （对比 ATMEGA168PA-MU)
- Flash upgrade headroom without respin （对比 ATMEGA649P-MU)
- Tape-and-reel supply for automated assembly （对比 ATMEGA169PA-MN)
- picoPower generation efficiency （对比 ATMEGA165PA-MNR)
设计说明
The 64-QFN (MLF) package has an exposed center paddle that must be soldered to a grounded pour - it serves as both the primary ground return and mechanical anchor. Use a 3x3 or 4x4 via array under the paddle to stitch to internal ground planes. Place 100 nF ceramic decoupling capacitors on each VCC/AVCC pad pair as close to the package edge as possible, and connect AVCC to VCC through an LC filter (ferrite bead plus 100 nF) when ADC accuracy matters.
Keep supply within the 2.7-5.5 V range and check the voltage-versus-maximum-frequency derating curve in the manufacturer datasheet before clocking at 16 MHz near 2.7 V. Brown-out detection should be enabled via fuses for battery applications so the MCU halts cleanly rather than corrupting EEPROM writes as the cell decays toward 2.7 V. Estimated: at 5 V and modest I/O loading, AVR ATmega active current at 16 MHz is typically in the tens of mA range - size the regulator with margin above quiescent plus worst-case I/O sink/source current.
RESET doubles as the ICSP programming line: do not load it with large capacitance or strong pull-downs, or the MPLAB SNAP programmer will fail to enter programming mode. Keep the RESET trace short with a 10 k pull-up. When substituting ATMEGA649P-MU or ATMEGA329PA-MU on this footprint, re-verify fuse defaults and register maps - they are pin-compatible but not register-identical, and shipping unverified firmware is the most common post-swap failure mode.
Route XTAL1/XTAL2 as short, guarded traces with the crystal ground guards returned directly to the nearest GND pad; keep RF or switching traces at least 3x the crystal trace width away from them. For ADC channels on ports A and F, avoid running digital PWM return currents under the analog traces - a moat around the AREF/AVCC region preserves the 10-bit converter's effective resolution in mixed-signal layouts.
合规信息
Verified web data classifies the part as Active and 'Green' packaging per FindIC, but explicit RoHS/REACH declarations were not present in the retrieved data - obtain certificates from Microchip's compliance portal before regulatory submission.
