ATMEGA165P-16ANR - 16KB Flash AVR MCU 16MHz 64-TQFP | Microchip
MPN: ATMEGA165P-16ANR ✓ Hoạt độngATMEGA165P-16ANR Tóm tắt
An 8-bit AVR microcontroller is a self-contained computing IC that integrates a RISC CPU core, nonvolatile program memory, RAM, peripherals, and I/O into a single chip, sitting at the top of the microcontroller hierarchy within the broader family of embedded processors and power-management silicon. The AVR architecture uses a Harvard memory structure with 131 single-cycle instructions, letting most instructions execute in one clock cycle.
Key features include the advanced RISC AVR core with 32 general-purpose working registers, JTAG (IEEE 1149.1 compliant) boundary-scan and on-chip debugging, and picoPower technology that reduces active current consumption. The ATMEGA165P is the process-improved, lower-power successor to the original ATmega165, keeping full firmware and pinout compatibility.
Technical depth: the device provides three flexible timer/counters with compare modes, an 8-channel 10-bit ADC, SPI and two USART serial interfaces, a byte-oriented two-wire interface, and an analog comparator. Programming is performed via SPI (ICSP) or JTAG, with true read-while-write self-programming for bootloaders. Operating voltage spans 2.7 V to 5.5 V, supporting both 3.3 V and 5 V systems.
Typical applications include industrial control panels, consumer appliance controllers, instrumentation front ends, and battery-powered devices where the picoPower sleep modes extend battery life.
Design consideration: at 16 MHz and 5 V, ensure a stable decoupled supply and route the ADC reference away from switching noise; the on-chip BOD should be enabled for flash integrity during brownouts.
This page adds value beyond the datasheet by synthesizing distributor pricing, drop-in alternatives, and practical engineering notes in one place.
Bộ thay thế dễ dàng lắp đặt cho ATMEGA165P-16ANR — 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 ATMEGA165P-16ANR (cùng hình factor và footprint) — khác nhau ở Package, Timers, Instruction Set, RoHS Status, Flash Memory.
ATMEGA165P-16AN
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA165A-AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA325P-16AN
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ATMEGA645P-16AN
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ATMEGA165PV-8AN
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA165P-16ANR Tỷ lệ tối đa & tính chất điện
| Core Processor | AVR 8-bit RISC |
| Core Size | 8-bit |
| Speed | 16 MHz |
| Flash Memory | 16 KB (8K x 16) ISP |
| EEPROM | 512 B |
| SRAM | 1 KB |
| Instructions | 131 (most single-cycle) |
| General Purpose I/O | 53 |
| Operating Voltage Range | 2.7 V to 5.5 V |
| Nhiệt độ hoạt động | -40C to +105C |
| Hộp | 64-TQFP (14x14 mm) |
| Kiểu lắp đặt | Surface Mount |
| Debug / Scan | JTAG (IEEE 1149.1) boundary scan |
| Programming Interfaces | SPI (ICSP), JTAG |
| Timers | 3 x timer/counter with compare |
| Serial Interfaces | SPI, 2 x USART, 2-wire (I2C-compatible) |
| ADC | 8-channel 10-bit |
| Low Power Technology | picoPower |
| Trạng thái RoHS | Compliant |
| Packaging | Tape & Reel (TR) |
Cấu hình chân ATMEGA165P-16ANR
| Chân 1 | PEN — Programming enable (active low, programming mode entry) |
| Chân 2 | PDI/PE0 (RXD0) — Programming data input / Port E bit 0, USART0 receive |
| Chân 3 | PDO/PE1 (TXD0) — Programming data output / Port E bit 1, USART0 transmit |
| Chân 4 | PE2 (XCK0/AIN0) — Port E bit 2, USART0 clock / analog comparator negative input |
| Chân 5 | PE3 (OC3A/AIN1) — Port E bit 3, Timer3 output compare A / comparator positive input |
| Chân 6 | PE4 (OC3B/INT4) — Port E bit 4, Timer3 output compare B / external interrupt 4 |
| Chân 7 | PE5 (OC3C/INT5) — Port E bit 5, Timer3 output compare C / external interrupt 5 |
| Chân 8 | PE6 (T3/INT6) — Port E bit 6, Timer3 clock input / external interrupt 6 |
| Chân 9 | PE7 (ICP3/INT7/CLKO) — Port E bit 7, Timer3 input capture / external interrupt 7 / clock out |
| Chân 10 | VCC — Digital supply voltage |
| Chân 11 | GND — Ground |
| Chân 12 | PA0 (AD0) — Port A bit 0, external memory address/data line 0 |
| Chân 13 | PA1 (AD1) — Port A bit 1, external memory address/data line 1 |
| Chân 14 | PA2 (AD2) — Port A bit 2, external memory address/data line 2 |
| Chân 15 | PA3 (AD3) — Port A bit 3, external memory address/data line 3 |
| Chân 16 | PA4 (AD4) — Port A bit 4, external memory address/data line 4 |
| Chân 17 | PA5 (AD5) — Port A bit 5, external memory address/data line 5 |
| Chân 18 | PA6 (AD6) — Port A bit 6, external memory address/data line 6 |
| Chân 19 | PA7 (AD7) — Port A bit 7, external memory address/data line 7 |
| Chân 20 | PC0 (A8) — Port C bit 0, external memory address line 8 |
| Chân 21 | PC1 (A9) — Port C bit 1, external memory address line 9 |
| Chân 22 | PC2 (A10) — Port C bit 2, external memory address line 10 |
| Chân 23 | PC3 (A11) — Port C bit 3, external memory address line 11 |
| Chân 24 | PC4 (A12) — Port C bit 4, external memory address line 12 |
| Chân 25 | PC5 (A13) — Port C bit 5, external memory address line 13 |
| Chân 26 | PC6 (A14) — Port C bit 6, external memory address line 14 |
| Chân 27 | PC7 (A15) — Port C bit 7, external memory address line 15 |
| Chân 28 | VCC — Digital supply voltage |
| Chân 29 | GND — Ground |
| Chân 30 | PG0 (WR) — Port G bit 0, external memory write strobe |
| Chân 31 | PG1 (RD) — Port G bit 1, external memory read strobe |
| Chân 32 | PB0 (SS/PCINT8) — Port B bit 0, SPI slave select |
| Chân 33 | PB1 (SCK) — Port B bit 1, SPI serial clock / ICSP programming clock |
| Chân 34 | PB2 (MOSI) — Port B bit 2, SPI master out / ICSP programming data in |
| Chân 35 | PB3 (MISO) — Port B bit 3, SPI master in / ICSP programming data out |
| Chân 36 | PB4 (OC2A/PCINT4) — Port B bit 4, Timer2 output compare A / pin change interrupt 4 |
| Chân 37 | PB5 (OC1A) — Port B bit 5, Timer1 output compare A / PWM output |
| Chân 38 | PB6 (OC1B) — Port B bit 6, Timer1 output compare B / PWM output |
| Chân 39 | PB7 (OC0A/OC1C) — Port B bit 7, Timer0 output compare A / Timer1 output compare C |
| Chân 40 | VCC — Digital supply voltage |
| Chân 41 | GND — Ground |
| Chân 42 | PG2 (ALE) — Port G bit 2, external memory address latch enable |
| Chân 43 | PG3 (TOSC2) — Port G bit 3, Timer/RTC oscillator output |
| Chân 44 | PG4 (TOSC1) — Port G bit 4, Timer/RTC oscillator input |
| Chân 45 | RESET — Reset input (active low), also used for ICSP programming |
| Chân 46 | VCC — Digital supply voltage |
| Chân 47 | GND — Ground |
| Chân 48 | XTAL2 — Main crystal oscillator output |
| Chân 49 | XTAL1 — Main crystal oscillator input / external clock input |
| Chân 50 | PD0 (RXD1) — Port D bit 0, USART1 receive |
| Chân 51 | PD1 (TXD1) — Port D bit 1, USART1 transmit |
| Chân 52 | PD2 (SDA/INT0) — Port D bit 2, two-wire data / external interrupt 0 |
| Chân 53 | PD3 (SCL/INT1) — Port D bit 3, two-wire clock / external interrupt 1 |
| Chân 54 | PD4 (ICP1) — Port D bit 4, Timer1 input capture |
| Chân 55 | PD5 (XCK1) — Port D bit 5, USART1 external clock |
| Chân 56 | PD6 (T1) — Port D bit 6, Timer1 external clock input |
| Chân 57 | PD7 (T0) — Port D bit 7, Timer0 external clock input |
| Chân 58 | AVCC — Analog supply voltage for ADC (connect to VCC via LC filter) |
| Chân 59 | GND — Ground |
| Chân 60 | PF0 (ADC0) — Port F bit 0, ADC channel 0 |
| Chân 61 | PF1 (ADC1) — Port F bit 1, ADC channel 1 |
| Chân 62 | PF2 (ADC2) — Port F bit 2, ADC channel 2 |
| Chân 63 | PF3 (ADC3) — Port F bit 3, ADC channel 3 |
| Chân 64 | AREF — ADC analog reference voltage |
Ứng dụng tiêu biểu
ATMEGA165P-16ANR phù hợp cho 6 Áp dụngs: Industrial Control Panels, Battery-Powered Portable Instruments, Home Appliance Controllers, Motor Control and Driver Interfaces, Data Acquisition Front Ends, Security and Access Control Systems.
Industrial Control Panels
The ATMEGA165P-16ANR fits industrial control panels because its -40C to +105C operating range, 53 GPIO lines, and JTAG boundary scan support both harsh environments and production in-circuit test. Its 16 MIPS throughput at 16 MHz executes typical ladder-style control loops with microsecond-level latency, while the 8-channel 10-bit ADC reads analog sensors such as potentiometers and thermistors directly. The two USARTs handle Modbus RTU links and HMI communication simultaneously, and the SPI interface drives relays or isolated I/O expanders. Because the JTAG port provides IEEE 1149.1 boundary scan, panel builders can verify every soldered connection during end-of-line test without a bed-of-nails fixture, reducing test cost and improving first-pass yield.
Được đề xuất
Battery-Powered Portable Instruments
In portable instrumentation, the picoPower technology of the ATMEGA165P-16ANR directly extends battery life by cutting idle and standby current versus the original ATmega165 die. The 2.7 V to 5.5 V supply range allows operation directly from two alkaline cells or a single lithium cell through the lower end of the range with a boost regulator. Its power-saving sleep modes keep only the asynchronous timer running between measurements, waking on external interrupts or watchdog timeout to take an ADC reading. The 512 B EEPROM stores calibration constants that survive battery replacement. With 16 KB Flash there is room for a bootloader plus measurement firmware, and the true read-while-write capability lets logging continue during EEPROM updates without stalling the CPU.
Được đề xuất
Home Appliance Controllers
Appliance control boards benefit from the ATMEGA165P-16ANR combination of robust I/O count, ADC inputs, and low EMI single-cycle RISC execution. The 53 GPIO lines drive seven-segment displays, relays, and triac triggers via the timer compare outputs, while the 8-channel 10-bit ADC reads NTC temperature sensors and user potentiometers. Its 105C rating tolerates the hot environments inside ovens, dishwashers, and boiler housings. The on-chip brown-out detector protects Flash contents during mains brownouts, a common field-failure root cause in appliance electronics. Meanwhile the two-wire interface connects to touch panels or EEPROM configuration chips over a simple two-wire bus, minimizing PCB layers and harness complexity in cost-sensitive white-good designs.
Được đề xuất
Motor Control and Driver Interfaces
The ATMEGA165P-16ANR suits low-end motor control and driver-interface boards through its three timer/counters with compare and PWM output channels, letting it generate complementary drive waveforms for brushed DC or stepper drivers at 16 MHz resolution. The analog comparator and fast interrupt structure handle overcurrent trip events within single clock cycles. Two USARTs bridge to a host controller or RS-485 network while the SPI port configures gate-driver or encoder-interface ICs. Because the die is the P-generation picoPower process, self-heating and supply noise are lower than the original ATmega165, improving ADC accuracy when measuring motor current through shunt resistors. The 105C temperature rating matches typical driver-board enclosures without external cooling.
Được đề xuất
Data Acquisition Front Ends
For compact data acquisition nodes, the ATMEGA165P-16ANR integrates an 8-channel 10-bit ADC with an internal reference option, eliminating a separate converter IC for moderately accurate multi-channel acquisition. The picoPower sleep modes allow duty-cycled sampling that reduces average supply current to microamp levels between conversions, which matters for wireless sensor nodes powered by batteries or energy harvesting. The 1 KB SRAM buffers measurement bursts, and read-while-write Flash operation supports in-system firmware updates over the network without interrupting data logging. The SPI interface streams samples to external Flash or a radio module, while JTAG enables hardware debugging of timing-critical sampling loops during development.
Được đề xuất
Security and Access Control Systems
Access-control keypads, RFID reader boards, and alarm panels use the ATMEGA165P-16ANR for its balance of I/O, serial ports, and nonvolatile storage. Two USARTs allow simultaneous connection to an RFID front-end module and an RS-485 panel bus, while the two-wire interface reads real-time-clock ICs for event timestamping. The 512 B EEPROM stores user credential tables locally so the door controller continues operating during network outages. The JTAG boundary-scan chain simplifies manufacturing test of the dense keypad matrix wiring. Additionally, the 105C rating and brown-out protection ensure reliable credential validation and alarm-state retention in outdoor gate enclosures exposed to wide temperature swings and unstable supply voltage.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATMEGA165P-16ANR — 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 | ATMEGA165P-16AN | ATMEGA165A-AU | ATMEGA325P-16AN | ATMEGA645P-16AN | ATMEGA165PV-8AN |
|---|---|---|---|---|---|---|
| Package | 64-TQFP (14x14 mm) | 64-TQFP (14x14 mm) - same | 64-TQFP (14x14 mm) - same | 64-TQFP (14x14 mm) - same | 64-TQFP (14x14 mm) - same | 64-TQFP (14x14 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16 KB | 16 KB | 16 KB | 32 KB | 64 KB | 16 KB |
| SRAM | 1 KB | 1 KB | 1 KB | 2 KB | 4 KB | 1 KB |
| Max Clock Speed | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 8 MHz |
| Process / Power | picoPower (P generation) | picoPower (P generation) | Standard ATmega165A | picoPower (P generation) | picoPower (P generation) | picoPower, low-voltage V-variant |
| Operating 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 | 1.8 V to 5.5 V |
| Pin-to-Pin Compatibility | Reference | 100% - identical die | 100% pinout | 100% pinout, family migration | 100% pinout, family migration | 100% pinout, speed derated |
Bảo phân biệt quan trọng
- picoPower P-generation die (vsATMEGA165A-AU)
- In-family Flash upgrade path on the same footprint (vsATMEGA325P-16AN)
- Full 16 MHz operation vs low-voltage variant (vsATMEGA165PV-8AN)
Ghi chú thiết kế
Provide separate filtered supplies for AVCC (pin 58) and VCC: connect AVCC to VCC through an LC filter (10 uH inductor with 100 nF and 10 uF caps) to keep ADC noise low. Place a 100 nF ceramic capacitor within 5 mm of every VCC pin (10, 28, 40, 46) and pair with bulk 10 uF at the board entry. Enable the on-chip brown-out detector at the appropriate threshold for your clock frequency so Flash writes never occur during supply sags. Estimated: at 16 MHz and 5 V, active current is typically in the 10-15 mA range per AVR family characteristics - verify against the manufacturer datasheet electrical characteristics table.
Use the 14x14 mm, 0.8 mm pitch TQFP-64 land pattern from the Microchip packaging drawing. Keep XTAL1/XTAL2 crystal traces under 15 mm with guard ground, and route the AREF trace away from switching signals with its own 100 nF capacitor to ground. Reserve a 6-pin (or 2x3) ICSP header for SPI programming and, if boundary-scan test or JTAG debugging is planned, bring the four JTAG pins on port C to test points. Distribute ground vias around the four GND pins to minimize ground bounce on the high-drive port B outputs.
When migrating firmware from the original ATmega165 or from ATMEGA325P variants, verify the interrupt vector table order and fuse settings differ slightly across family members - always recheck the fuse bits (especially CLKDIV8 and BOD level) after programming with a new tool. Note the PEN pin (pin 1) is active low for programming mode entry and must not be pulled low accidentally in normal operation. Also remember the ATMEGA165PV-8AN is limited to 8 MHz: selecting it as a drop-in for a 16 MHz design halves throughput and can break timing-sensitive UART baud rates.
Thông tin tuân thủ
RoHS compliance and lead-free finish inferred from the AN package suffix per Microchip part-numbering. Obtain REACH and conflict-minerals declarations from the Microchip compliance portal.