ATMEGA32-16PC - 8-Bit AVR MCU 16MHz 32KB Flash DIP-40 | Microchip
Référence : ATMEGA32-16PC ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $1 | $1,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1 000 | $0 | $0,00 |
ATMEGA32-16PC Présentation
An 8-bit microcontroller is a single-chip computer that integrates a CPU core, program memory, data memory, and peripherals such as timers, communication interfaces, and analog-to-digital converters. The AVR family popularized single-cycle RISC execution, and this part sits in the classic ATmega tier above the smaller ATmega8/ATmega16 devices and below the ATmega64/ATmega128 family in the general-purpose microcontroller hierarchy.
Key features include 131 powerful instructions, most executing in a single clock cycle, 32 general-purpose working registers, and up to 16 MIPS throughput at 16 MHz. The ATMEGA32-16PC provides 32 programmable I/O lines, a JTAG interface for on-chip debugging, and hardware connectivity through I2C (TWI), SPI, and UART/USART interfaces, enabling versatile system integration.
Technically, the device uses the AVR Harvard architecture with separate program and data buses for parallel instruction fetch and execution. The self-programming Flash allows boot-loader firmware updates in the field, while the 10-bit ADC with 8 multiplexed channels supports direct analog sensor acquisition. Power management features include idle and power-down sleep modes suited to battery-operated designs.
Typical applications include education and prototyping (the DIP-40 package is breadboard-friendly), industrial control panels, sensor nodes, and embedded instrumentation requiring 5V logic levels and straightforward in-system programming.
Designers should note the DIP-40 0.600-inch footprint is pin-compatible across the ATmega32 DIP family, so PCBs can accept speed or temperature-grade variants without layout changes.
This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not found in the manufacturer datasheet alone.
Alternatives de remplacement direct pour ATMEGA32-16PC — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ATMEGA32-16PC (même facteur de forme et même empreinte) — différant par Package, Operating Temperature, Debug Interface, Communication Interfaces, EEPROM.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATMEGA32-16PU
✅ Remplacement direct✓ En stock
$3.68 / unité
Voir la fiche technique →ATMEGA32A-PU
✅ Remplacement direct✓ En stock
$3.85 / unité
Voir la fiche technique →ATMEGA32-16PI
✅ Remplacement direct✓ En stock
$2.75 / unité
Voir la fiche technique →ATMEGA32L-8PU
✅ Remplacement direct✓ En stock
$9.75 / unité
Voir la fiche technique →ATMEGA32-16PC Valeurs maximales et caractéristiques électriques
| Core Architecture | AVR 8-bit RISC |
| Core Size | 8-bit |
| Fréquence d'horloge maximale | 16 MHz |
| Flash Program Memory | 32 KB (16K x 16) |
| SRAM | 2 KB |
| EEPROM | 1 KB |
| Instruction Count | 131 instructions |
| Throughput | Up to 16 MIPS at 16 MHz |
| ADC Resolution | 10-bit |
| ADC Channels | 8 |
| I/O Count | 32 programmable I/O lines |
| Communication Interfaces | I2C (TWI), SPI, UART/USART |
| Debug Interface | JTAG for on-chip debug |
| Boîtier | 40-PDIP (0.600 inch, 15.24 mm) |
| Type de montage | Through-Hole |
Configuration des broches de ATMEGA32-16PC
| Broche 1 | PB0 (XCLK/T0) — Port B bit 0; external clock input / Timer0 clock input |
| Broche 2 | PB1 (T1) — Port B bit 1; Timer1 clock input |
| Broche 3 | PB2 (AIN0/INT2) — Port B bit 2; analog comparator positive input / external interrupt 2 |
| Broche 4 | PB3 (AIN1/OC0) — Port B bit 3; analog comparator negative input / Timer0 PWM output |
| Broche 5 | PB4 (SS) — Port B bit 4; SPI slave select |
| Broche 6 | PB5 (MOSI) — Port B bit 5; SPI master output / slave input (also ISP programming) |
| Broche 7 | PB6 (MISO) — Port B bit 6; SPI master input / slave output (also ISP programming) |
| Broche 8 | PB7 (SCK/UCSK) — Port B bit 7; SPI serial clock (also ISP programming) |
| Broche 9 | RESET — Active-low reset input |
| Broche 10 | VCC — Digital supply voltage |
| Broche 11 | GND — Ground |
| Broche 12 | XTAL1 — Crystal / external clock input |
| Broche 13 | XTAL2 — Crystal oscillator output |
| Broche 14 | PD0 (RXD) — Port D bit 0; UART receive data |
| Broche 15 | PD1 (TXD) — Port D bit 1; UART transmit data |
| Broche 16 | PD2 (INT0) — Port D bit 2; external interrupt 0 |
| Broche 17 | PD3 (INT1) — Port D bit 3; external interrupt 1 |
| Broche 18 | PD4 (OC1B) — Port D bit 4; Timer1 output compare B / PWM output |
| Broche 19 | PD5 (OC1A) — Port D bit 5; Timer1 output compare A / PWM output |
| Broche 20 | PD6 (ICP1) — Port D bit 6; Timer1 input capture |
| Broche 21 | PD7 (OC2) — Port D bit 7; Timer2 output compare / PWM output |
| Broche 22 | PC0 (SCL) — Port C bit 0; TWI (I2C) serial clock |
| Broche 23 | PC1 (SDA) — Port C bit 1; TWI (I2C) serial data |
| Broche 24 | PC2 (TCK) — Port C bit 2; JTAG test clock |
| Broche 25 | PC3 (TMS) — Port C bit 3; JTAG test mode select |
| Broche 26 | PC4 (TDO) — Port C bit 4; JTAG test data output |
| Broche 27 | PC5 (TDI) — Port C bit 5; JTAG test data input |
| Broche 28 | PC6 (TOSC1) — Port C bit 6; Timer2 oscillator input |
| Broche 29 | PC7 (TOSC2) — Port C bit 7; Timer2 oscillator output |
| Broche 30 | AVCC — ADC supply voltage |
| Broche 31 | GND — Ground |
| Broche 32 | AREF — ADC analog reference voltage |
| Broche 33 | PA7 (ADC7) — Port A bit 7; ADC channel 7 |
| Broche 34 | PA6 (ADC6) — Port A bit 6; ADC channel 6 |
| Broche 35 | PA5 (ADC5) — Port A bit 5; ADC channel 5 |
| Broche 36 | PA4 (ADC4) — Port A bit 4; ADC channel 4 |
| Broche 37 | PA3 (ADC3) — Port A bit 3; ADC channel 3 |
| Broche 38 | PA2 (ADC2) — Port A bit 2; ADC channel 2 |
| Broche 39 | PA1 (ADC1) — Port A bit 1; ADC channel 1 |
| Broche 40 | PA0 (ADC0) — Port A bit 0; ADC channel 0 |
Applications typiques
ATMEGA32-16PC convient pour 6 applications: Education and Prototyping, Industrial Control Panels, Sensor Acquisition Nodes, Embedded Instrumentation, Motor and Actuator Control, Legacy 5V System Maintenance.
Education and Prototyping
The ATMEGA32-16PC fits breadboard-based learning and rapid prototyping because its 40-pin PDIP (0.600 inch) through-hole package plugs directly into standard solderless breadboards and DIP sockets, avoiding hot-air rework. Its 131 single-cycle AVR instructions achieve up to 16 MIPS at 16 MHz, fast enough for classroom robotics, LED matrices, and keypad interfaces. The 8-channel 10-bit ADC reads analog sensors without external converters, while ISP programming with a USBasp plus Atmel Studio or avr-gcc keeps tooling cost minimal. JTAG on-chip debugging lets students step through firmware, and 32 I/O lines leave ample expansion headroom on a single DIP-40 chip.
Recommandé
Industrial Control Panels
The ATMEGA32-16PC suits 5V industrial control panels needing reliable sequenced logic, relay driving, and operator interfaces. Its 32KB self-programming Flash accommodates MODBUS RTU slaves and menu-driven HMI firmware, while the hardware UART/USART handles RS-485 fieldbus links through an external transceiver. Three timers with PWM output drive actuators and alarms, and the 1KB EEPROM stores setpoints through power cycles. The DIP-40 socketed format simplifies field replacement by technicians without soldering equipment, and the industrial-grade ATMEGA32-16PI variant offers the same footprint for -40C to +85C cabinet installations where commercial temperature ratings would be marginal.
Recommandé
Sensor Acquisition Nodes
The ATMEGA32-16PC works well as a 5V sensor acquisition node because its integrated 8-channel 10-bit ADC digitizes up to eight analog sensors directly, removing external converter cost. At 16 MHz the AVR core executes 16 MIPS, sufficient for oversampling and averaging routines that raise effective resolution. The TWI (I2C) and SPI interfaces connect digital sensors such as temperature and pressure devices, and the 2KB SRAM buffers sample arrays before transmission over the UART. The 1KB EEPROM holds calibration constants, and sleep modes allow duty-cycled battery operation when continuous acquisition is not required in distributed monitoring installations.
Recommandé
Embedded Instrumentation
For bench and field instrumentation, the ATMEGA32-16PC provides a deterministic 8-bit AVR RISC core with 131 single-cycle instructions, making control loops and measurement timing predictable. The JTAG interface enables on-chip debugging and boundary scan during production test, a key advantage over parts lacking hardware debug. Its 32KB Flash stores multi-language menus and lookup tables, the 10-bit ADC with internal reference supports basic metering front-ends, and the SPI bus drives graphical LCDs and precision ADC companions. The 5V DIP-40 package integrates cleanly into legacy instrument chassis that already use through-hole sockets and 5V rails.
Recommandé
Motor and Actuator Control
The ATMEGA32-16PC controls small motors and actuators using its hardware PWM timer outputs and 32 I/O lines. At 16 MHz, PWM resolution and update rates are adequate for DC motor speed control, servo positioning, and stepper sequencing, with the 16 MIPS throughput leaving headroom for PID firmware. The 10-bit ADC reads feedback from potentiometers, current-sense shunts via amplifiers, or encoders through interrupt pins, closing the control loop entirely on-chip. UART connectivity allows supervisory commands from a PLC or host PC, while the EEPROM retains motion profiles across power cycles in machinery such as conveyors, camera rigs, and automated test fixtures.
Recommandé
Legacy 5V System Maintenance
The ATMEGA32-16PC is a primary choice for maintaining legacy 5V through-hole systems whose original controllers are obsolete or scarce. Its 40-PDIP footprint and pin-compatible family variants (ATMEGA32-16PU, ATMEGA32A-PU, ATMEGA32-16PI) let repair shops re-populate existing DIP-40 sockets without PCB modification. Firmware compatibility across the ATmega32 family means original HEX images re-program directly via ISP. The 5V-tolerant I/O, JTAG for diagnostics, and 32KB Flash reproduce the original device behavior, extending service life of industrial machines, test equipment, and consumer appliances that were designed around classic Atmel AVR platforms decades ago.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATMEGA32-16PC — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATMEGA32-16PU | ATMEGA32A-PU | ATMEGA32-16PI | ATMEGA32L-8PU |
|---|---|---|---|---|---|
| Package | 40-PDIP (0.600 inch) | 40-PDIP (0.600 inch) - same | 40-PDIP (0.600 inch) - same | 40-PDIP (0.600 inch) - same | 40-PDIP (0.600 inch) - same |
| Brand | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) |
| Flash Program Memory | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| Maximum Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 8 MHz |
| SRAM / EEPROM | 2 KB / 1 KB | 2 KB / 1 KB | 2 KB / 1 KB | 2 KB / 1 KB | 2 KB / 1 KB |
| Throughput | Up to 16 MIPS | Up to 16 MIPS | Up to 16 MIPS | Up to 16 MIPS | Up to 8 MIPS |
| ADC | 8-channel 10-bit | 8-channel 10-bit | 8-channel 10-bit | 8-channel 10-bit | 8-channel 10-bit |
| Pin-to-Pin Compatibility | Reference (DIP-40) | 100% drop-in | 100% drop-in | 100% drop-in | 100% drop-in (speed limited) |
Principaux différenciateurs
- Breadboard-friendly DIP-40 through-hole package (vs ATMEGA32-16AUR (TQFP-44))
- Full-speed 16 MHz grade in DIP package (vs ATMEGA32L-8PU)
- JTAG on-chip debugging in a low-cost 8-bit MCU (vs ATMEGA32A-PU)
Notes de conception
For DIP-40 socketed designs, use a machined-pin or dual-wipe socket to protect the ATMEGA32-16PC pins during repeated reprogramming cycles. Decouple VCC (pin 10) and AVCC (pin 30) with 100 nF ceramic capacitors placed within a few millimeters of each pin, and tie AVCC to VCC through a low-pass RC filter when ADC accuracy matters. AREF (pin 32) should be decoupled to GND with 100 nF and never driven above AVCC, per the Atmel ATmega32 datasheet ADC section.
Ensure the supply meets the datasheet voltage range for the 16 MHz speed grade; running the ATmega32 core above its rated voltage at 16 MHz violates the speed-vs-voltage curve and causes unreliable execution. Add a brown-out detector or enable the internal BOD fuse so the MCU resets cleanly during supply dips rather than corrupting EEPROM during write operations. Estimated: a typical active-mode current of a few tens of mA at 5V means under 0.3 W dissipation - no heatsink or thermal design is needed for the PDIP package.
When substituting ATMEGA32-16PC with ATMEGA32L-8PU, remember the maximum clock halves to 8 MHz - baud rates, delay loops, and PWM frequencies scale accordingly. Also, fuse settings (CKOPT, BOD, JTAGEN) live in the chip, not the board; JTAG is enabled by default on Port C pins 24-27, which prevents those pins from being used as ordinary GPIO unless JTAGEN is disabled via ISP. Verify lock-bit and fuse state after migrating firmware between family variants.
Keep the XTAL1/XTAL2 crystal (pins 12-13) traces short and place the crystal load capacitors directly adjacent to the pins, with a guard ground trace between the crystal and nearby switching signals. SPI ISP programming lines (PB5-PB7) should include series resistors of roughly 100 ohms if long harnesses connect to the programming header, limiting ringing during in-system programming while preserving single-cycle port drive.
Informations de conformité
RoHS/REACH/lead-free status for this exact ATMEGA32-16PC suffix is not stated in the retrieved data. Verify on the Microchip product page or DigiKey listing line item; legacy DIP parts may exist in both Pb-free and leaded finishes.
