ATMEGA16-16PI - 8-bit AVR MCU 16KB 16MHz DIP-40 | Microchip
MPN: ATMEGA16-16PI ✓ Hoạt độngATMEGA16-16PI Tóm tắt
An 8-bit microcontroller (MCU) is a single integrated circuit that combines a processor core, program memory, data memory, and peripherals such as timers, ADCs, and serial interfaces on one chip. Microcontrollers sit at the heart of embedded systems, below application processors and above discrete logic in the system hierarchy, and the AVR family pioneered the modern single-cycle RISC MCU architecture now maintained by Microchip Technology after its acquisition of Atmel.
Key features of the ATMEGA16-16PI include 131 powerful instructions, most executing in a single clock cycle, 32 general-purpose working registers, an 8-channel 10-bit ADC, three timers/counters (two 8-bit, one 16-bit), and a JTAG interface for on-chip debugging. Serial connectivity covers SPI, UART, USART, and TWI (I2C), giving the part flexible interconnect options for legacy and new designs.
Technical depth: the AVR enhanced RISC core is fully static and executes C-friendly code efficiently, with in-system self-programming flash enabling field firmware updates. The ATmega16 die delivers near-1-MIPS-per-MHz efficiency, and the 40-PDIP package makes it a favorite for prototyping, breadboarding, and through-hole industrial boards.
Typical applications include industrial control and automation, hobbyist and educational platforms (supported by the MightyCore Arduino hardware package), motor control interfaces, and measurement instruments leveraging the 10-bit ADC.
Design consideration: for reliable operation at 16 MHz, use the full-swing crystal oscillator option with correct fuse settings, and provide 100 nF decoupling on VCC and AVCC pins.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho ATMEGA16-16PI — 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 ATMEGA16-16PI (cùng hình factor và footprint) — khác nhau ở Operating Temperature, Instruction Set, Timers, Program Memory Size, EEPROM Size.
ATMEGA16-16PC
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA16-16PU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA16A-PI
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ATMEGA32-16PI
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATMEGA8535-16PI
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATMEGA16-16PI Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit AVR RISC |
| Flash Program Memory | 16 KB (8K x 16) In-System Programmable |
| SRAM | 1 KB |
| EEPROM | 512 B |
| Maximum CPU Speed | 16 MHz |
| Throughput | Up to 16 MIPS at 16 MHz |
| Instructions | 131 powerful instructions, most single-cycle |
| General Purpose Registers | 32 x 8-bit |
| ADC | 8-channel 10-bit |
| Timers/Counters | 2 x 8-bit, 1 x 16-bit |
| Serial Interfaces | SPI, UART, USART, TWI (I2C) |
| Debug Interface | JTAG for on-chip debug |
| GPIO | 32 programmable I/O pins |
| Nhiệt độ hoạt động | -40C to +85C |
| Hộp | 40-PDIP |
| Kiểu lắp đặt | Through Hole |
Cấu hình chân ATMEGA16-16PI
| Chân 1 | PB0 (XCK/T0) — Port B bit 0, USART external clock / Timer0 clock input |
| Chân 2 | PB1 (T1) — Port B bit 1, Timer1 external clock input |
| Chân 3 | PB2 (AIN0/INT2) — Port B bit 2, analog comparator input 0 / external interrupt 2 |
| Chân 4 | PB3 (AIN1/OC0) — Port B bit 3, analog comparator input 1 / Timer0 PWM output |
| Chân 5 | PB4 (SS) — Port B bit 4, SPI slave select |
| Chân 6 | PB5 (MOSI) — Port B bit 5, SPI master output / slave input (also ICSP data) |
| Chân 7 | PB6 (MISO) — Port B bit 6, SPI master input / slave output (also ICSP data) |
| Chân 8 | PB7 (SCK) — Port B bit 7, SPI serial clock (also ICSP clock) |
| Chân 9 | RESET — Active-low reset input / ICSP programming reset |
| Chân 10 | VCC — Digital supply voltage (4.5-5.5V for 16 MHz operation) |
| Chân 11 | GND — Digital ground |
| Chân 12 | XTAL2 — Inverting oscillator amplifier output |
| Chân 13 | XTAL1 — Inverting oscillator amplifier input / external clock input |
| Chân 14 | PD0 (RXD) — Port D bit 0, USART receive input |
| Chân 15 | PD1 (TXD) — Port D bit 1, USART transmit output |
| Chân 16 | PD2 (INT0) — Port D bit 2, external interrupt 0 |
| Chân 17 | PD3 (INT1) — Port D bit 3, external interrupt 1 |
| Chân 18 | PD4 (OC1B) — Port D bit 4, Timer1 PWM output B |
| Chân 19 | PD5 (OC1A) — Port D bit 5, Timer1 PWM output A |
| Chân 20 | PD6 (ICP1) — Port D bit 6, Timer1 input capture |
| Chân 21 | PD7 (OC2) — Port D bit 7, Timer2 PWM output |
| Chân 22 | PC0 (SCL) — Port C bit 0, TWI serial clock |
| Chân 23 | PC1 (SDA) — Port C bit 1, TWI serial data |
| Chân 24 | PC2 (TCK) — Port C bit 2, JTAG test clock |
| Chân 25 | PC3 (TMS) — Port C bit 3, JTAG test mode select |
| Chân 26 | PC4 (TDO) — Port C bit 4, JTAG test data output |
| Chân 27 | PC5 (TDI) — Port C bit 5, JTAG test data input |
| Chân 28 | PC6 (TOSC1) — Port C bit 6, Timer oscillator input (32.768 kHz RTC crystal) |
| Chân 29 | PC7 (TOSC2) — Port C bit 7, Timer oscillator output |
| Chân 30 | AVCC — Analog supply voltage for ADC (connect to VCC via low-pass filter) |
| Chân 31 | GND — Ground |
| Chân 32 | AREF — ADC analog reference voltage |
| Chân 33 | PA0 (ADC0) — Port A bit 0, ADC channel 0 |
| Chân 34 | PA1 (ADC1) — Port A bit 1, ADC channel 1 |
| Chân 35 | PA2 (ADC2) — Port A bit 2, ADC channel 2 |
| Chân 36 | PA3 (ADC3) — Port A bit 3, ADC channel 3 |
| Chân 37 | PA4 (ADC4) — Port A bit 4, ADC channel 4 |
| Chân 38 | PA5 (ADC5) — Port A bit 5, ADC channel 5 |
| Chân 39 | PA6 (ADC6) — Port A bit 6, ADC channel 6 |
| Chân 40 | PA7 (ADC7) — Port A bit 7, ADC channel 7 |
Ứng dụng tiêu biểu
ATMEGA16-16PI phù hợp cho 6 Áp dụngs: Industrial Control and Automation, Educational and Hobbyist Platforms, Measurement Instruments and Data Acquisition, Embedded Serial Communication Nodes, Motor Control and PWM Actuator Drivers, Legacy Product Repair and End-of-Life Sustainment.
Industrial Control and Automation
The ATMEGA16-16PI fits industrial control because its -40C to +85C industrial rating, 16 MIPS throughput, and rich peripheral set (8-channel 10-bit ADC, 16-bit PWM, TWI/SPI/UART) cover typical sensor-to-actuator loops without external components. In a PLC-style board, ADC channels read transducers while timer1 PWM drives actuators; the through-hole PDIP-40 simplifies field service. Trade-off: at 16 MHz full speed the part needs 4.5-5.5V supply, and there is no hardware division, so control-loop tuning is done in integer math.
Được đề xuất
Educational and Hobbyist Platforms
The ATMEGA16-16PI is a classroom favorite because the DIP-40 package survives repeated insertion in breadboards and sockets, and the MightyCore Arduino hardware package provides Arduino IDE support for ATmega16, ATmega32, and ATmega8535. JTAG enables step-by-step on-chip debugging that low-end hobby MCUs lack, teaching professional workflows with the same chip. Consideration: firmware uses custom MightyCore board definitions rather than mainstream Arduino cores, so fuse configuration must be done manually or boards may fail to boot.
Được đề xuất
Measurement Instruments and Data Acquisition
With an 8-channel 10-bit ADC and differential input modes, the ATMEGA16-16PI builds compact multichannel acquisition front ends: port A doubles as ADC inputs, AVCC/AREF pins allow clean analog reference design, and the UART streams readings to a host while results are logged to the 512B EEPROM between transmissions. Up to 15kSPS at full 10-bit resolution gives adequate bandwidth for temperature, pressure, and voltage monitoring. For better resolution, an external delta-sigma ADC on SPI is a common companion approach.
Được đề xuất
Embedded Serial Communication Nodes
The ATMEGA16-16PI integrates USART, SPI, and TWI (I2C) on one die, making it an economical RS-232/RS-485 node or SPI/I2C bridge in legacy industrial buses. Pin 14 (RXD) and pin 15 (TXD) map directly to external transceivers; JTAG pins double as I2C (SCL/SDA on PC0/PC1) when debug is not used, so protocols can be mixed on a 40-pin footprint. Note: only one UART is present, so multi-drop designs should implement protocol handling carefully or step up to an ATmega128-class part.
Được đề xuất
Motor Control and PWM Actuator Drivers
Timer1 provides two high-speed PWM outputs (OC1A on PD5, OC1B on PD4) and timer2 adds OC2 on PD7, enabling multi-channel actuator drive: DC motor speed, servo positioning, and brightness control from a single ATMEGA16-16PI. The 16-bit timer gives fine duty-cycle resolution, and input-capture (ICP1 on PD6) supports tachometer feedback. Driving inductive loads requires external gate drivers or flyback protection; at 5V logic, level shifting is needed for 12V+ motor rails, which the companion gate drivers provide.
Được đề xuất
Legacy Product Repair and End-of-Life Sustainment
Many 2000s-era boards specify ATmega16 in DIP-40, and the ATMEGA16-16PI with its industrial rating and drop-in family (ATMEGA16-16PC/PU, ATMEGA16A-PI, ATMEGA32-16PI) is the standard sustainment choice. Socketed DIP packages allow firmware reflash without desoldering, and pin compatibility across the family means a repair shop can stock one footprint for several BOM variants. Caution: verify the 'I' versus 'C' temperature suffix against the original BOM environment before substitution in outdoor or cold-storage equipment.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATMEGA16-16PI — 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 | ATMEGA16-16PC | ATMEGA16-16PU | ATMEGA32-16PI | ATMEGA8535-16PI |
|---|---|---|---|---|---|
| Package | 40-PDIP | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same |
| Brand | Microchip Technology (Atmel) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 16 KB | 16 KB | 16 KB | 32 KB | 8 KB |
| SRAM | 1 KB | 1 KB | 1 KB | 2 KB | 512 B |
| Maximum Clock Speed | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Operating Temperature | -40C to +85C (Industrial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| ADC | 8-channel 10-bit | 8-channel 10-bit | 8-channel 10-bit | 8-channel 10-bit | 8-channel 10-bit |
| JTAG Debug | Yes | Yes | Yes | Yes | Yes |
| Mounting | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
Bảo phân biệt quan trọng
- JTAG on-chip debugging (vsATMEGA328P)
- Industrial temperature rating (vsATMEGA16-16PU)
- Memory-matched but upgradeable (vsATMEGA32-16PI)
Ghi chú thiết kế
For 16 MHz operation the ATMEGA16-16PI requires a 4.5-5.5V supply per the datasheet speed-voltage curve; below 8 MHz it can run from 2.7V. Decouple VCC (pin 10) and AVCC (pin 30) with 100 nF ceramics placed within a few millimeters of each pin, and connect AVCC to VCC through a 10 uH inductor or low-pass RC when ADC accuracy matters. Estimated: a 16 MHz, 25 mA typical active current on a 5V rail dissipates about 125 mV x 1 A equivalence is negligible; self-heating in PDIP-40 is not a design driver.
Although the DIP-40 is through-hole, layout still matters: keep the crystal within 20 mm of XTAL1/XTAL2 (pins 13/12) with load capacitors grounded at a single point near GND pin 11. Route the analog ground return from pin 31 back to the power supply separately from digital switching currents to protect the 10-bit ADC's effective resolution. Use ICSP header (MOSI/MISO/SCK/RESET) accessible on-board for field firmware updates via SPI programming.
Fuse misconfiguration is the leading cause of bricked ATmega16 devices: setting SPIEN off while using ICSP, or selecting an external clock CKSEL with no clock source, locks out the part. Always program fuses with a slow ISP frequency (below 1/4 of system clock) and verify CKOPT for 16 MHz full-swing operation. Also, port C doubles as JTAG by default; if you need PC2-PC5 as GPIO, clear the JTAGEN fuse or disable JTAG in software using the JTD bit written twice within four cycles.
When driving long wiring or cables from port outputs, add 100-330 ohm series resistors to limit ringing and protect against transient latch-up; AVR I/O pins tolerate ±40 mA absolute maximum but recommended operating current is ±20 mA per pin. For the TWI (I2C) bus on PC0/PC1, external pull-ups of 4.7 kohm at 100 kHz or 2.2 kohm at 400 kHz are required, as the AVR does not provide internal bus pull-ups adequate for standard-mode operation.
Thông tin tuân thủ
FindIC lists the ATMEGA16-16PI as GREEN package; lead-free PDIP with nickel-palladium-gold finish. REACH and conflict-minerals declarations not present in provided data - request Microchip product environmental report.
