PIC17C44T-16/L - 8-Bit 16MHz OTP MCU 16KB 44-PLCC | Microchip
N.º da peça: PIC17C44T-16/L ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.2 | $162,00 |
| 100 | $14.1 | $1.410,00 |
| 500 | $12.4 | $6.200,00 |
| 1.000 | $11.05 | $11.050,00 |
PIC17C44T-16/L Visão geral
An 8-bit microcontroller is a single-chip computer that processes data 8 bits at a time; it belongs to the broader category of microcontrollers -> embedded controllers -> microprocessors -> semiconductors. The PIC17C family sits above the PIC16C and PIC14C lines in Microchip's portfolio and was designed for higher-performance 8-bit applications requiring larger program memory and more I/O than mid-range PIC16 devices can deliver. PIC17C44 parts use a 16-bit instruction word, giving them a 16-bit program memory bus despite their 8-bit data path.
Key features include 33 digital I/O pins, an internal oscillator option, multiple timer/counter modules, USART serial communication, a 10-bit (or 8-bit, family-dependent) ADC, and an instruction set that executes most instructions in a single cycle. The OTP memory allows one-time field programming without the UV window required by older EPROM-based PIC17C variants. The 44-PLCC package provides ample pin count for parallel buses, multiple peripherals, and external memory expansion if needed.
Architecture-wise, PIC17C44 is built on an enhanced Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and data access. The 16 MHz clock combined with a 4-cycle-per-instruction design yields approximately 4 MIPS of throughput, competitive with other 8-bit MCUs of its generation. Hardware peripherals (timers, capture/compare/PWM, USART) are integrated on-chip, reducing external component count.
Typical applications include industrial control systems, automotive subsystems (legacy designs), motor control, instrumentation, and consumer electronics that benefit from the larger 16KB program space versus PIC16C alternatives. The PLCC socket-friendly package simplifies prototyping, rework, and field service in mature designs.
When designing with this part, verify supply voltage (4.5V-6V typical) compatibility with your system rail and confirm the OTP memory model fits your firmware update strategy. For new designs, consider whether a flash-based PIC18 or PIC16F1xxx equivalent may be more cost-effective over the product lifecycle.
This page synthesizes distributor pricing, OTP-vs-EPROM distinction, and drop-in 44-PLCC alternatives not found in the manufacturer datasheet itself.
Alternativas drop-in para PIC17C44T-16/L — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC17C44T-16/L (mesmo formato e footprint) — diferindo em Core Architecture, Program Memory Size, Program Memory Type, Maximum Clock Frequency, Operating Temperature.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC17C44-16/L
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC17C44-16I/L
✅ Drop-In✓ Em estoque
$6.15 / unidade
Ver ficha técnica →PIC17C44-25I/L
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC17C44-25/L
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC17C43-16/L
✅ Drop-In✓ Em estoque
$5.1 / unidade
Ver ficha técnica →PIC17C44T-16/L Classificações máximas e características elétricas
| Core Architecture | PIC 8-bit RISC |
| Family | PIC17C |
| Largura do barramento de dados | 8 bits |
| Program Memory Bus Width | 16 bits |
| Program Memory Size | 16 KB (8K x 16) |
| Program Memory Type | OTP (One-Time Programmable) |
| RAM Size | 454 bytes |
| Frequência máxima de clock | 16 MHz |
| Instruction Throughput | approx 4 MIPS (4 cycles/instruction) |
| Supply Voltage (Vdd) | 4.5 V to 6.0 V |
| I/O Pins | 33 |
| Package Type | 44-PLCC (J-lead) |
| Package Dimensions | 16.59 mm x 16.59 mm |
| Tipo de montagem | Surface Mount |
| Temperatura de operação | 0C to +70C (commercial) |
| Status RoHS | Non-compliant (legacy OTP/PLCC process) |
| Lifecycle | Obsolete (last-time-buy stock only) |
Configuração de pinos do PIC17C44T-16/L
| Pino 1 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Pino 2 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Pino 3 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Pino 4 | RA3/AN3 — PORTA bit 3 / analog input 3 |
| Pino 5 | RA4/AN4/T0CKI — PORTA bit 4 / analog input 4 / Timer0 clock input |
| Pino 6 | RA5/AN5 — PORTA bit 5 / analog input 5 |
| Pino 7 | OSC1/CLKIN — Oscillator input / external clock input |
| Pino 8 | OSC2/CLKOUT — Oscillator output / clock output |
| Pino 9 | RC0 — PORTC bit 0 |
| Pino 10 | RC1 — PORTC bit 1 |
| Pino 11 | RC2 — PORTC bit 2 |
| Pino 12 | RC3 — PORTC bit 3 |
| Pino 13 | RC4 — PORTC bit 4 |
| Pino 14 | RC5 — PORTC bit 5 |
| Pino 15 | RC6/TX/CK — PORTC bit 6 / USART TX / clock line |
| Pino 16 | RC7/RX/DT — PORTC bit 7 / USART RX / data line |
| Pino 17 | VSS — Ground reference |
| Pino 18 | RD0 — PORTD bit 0 |
| Pino 19 | RD1 — PORTD bit 1 |
| Pino 20 | RD2 — PORTD bit 2 |
| Pino 21 | RD3 — PORTD bit 3 |
| Pino 22 | RD4 — PORTD bit 4 |
| Pino 23 | RD5 — PORTD bit 5 |
| Pino 24 | RD6 — PORTD bit 6 |
| Pino 25 | RD7 — PORTD bit 7 |
| Pino 26 | VSS — Ground reference |
| Pino 27 | VDD — Positive supply (4.5V-6V) |
| Pino 28 | RE0/RD — PORTE bit 0 / parallel port read control |
| Pino 29 | RE1/WR — PORTE bit 1 / parallel port write control |
| Pino 30 | RE2/CS — PORTE bit 2 / parallel port chip select |
| Pino 31 | VSS — Ground reference |
| Pino 32 | RB0/INT0 — PORTB bit 0 / external interrupt 0 |
| Pino 33 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| Pino 34 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| Pino 35 | RB3/INT3 — PORTB bit 3 / external interrupt 3 |
| Pino 36 | RB4 — PORTB bit 4 |
| Pino 37 | RB5 — PORTB bit 5 |
| Pino 38 | RB6 — PORTB bit 6 |
| Pino 39 | RB7 — PORTB bit 7 |
| Pino 40 | VSS — Ground reference |
| Pino 41 | VDD — Positive supply (4.5V-6V) |
| Pino 42 | NC — Not connected (per datasheet pinout) |
| Pino 43 | NC — Not connected (per datasheet pinout) |
| Pino 44 | MCLR/VPP — Master clear reset / programming voltage |
Aplicações típicas
PIC17C44T-16/L é adequado para 7 aplicaçãos: Industrial Control Systems, Motor Control and PWM Drives, Automotive Subsystems (Legacy), Test and Measurement Instrumentation, Consumer Electronics Controllers, Embedded Educational and Prototyping Platforms, Communication Peripherals and Protocol Bridges.
Industrial Control Systems
The PIC17C44T-16/L fits legacy industrial control designs because its 16 KB OTP memory accommodates mid-sized state-machine and PID control firmware, while the 33 digital I/O pins handle multiple sensor inputs and actuator outputs directly without external expanders. At 16 MHz (approx 4 MIPS), the PIC17C44 executes control loops fast enough for motor speed regulation and conveyor sequencing. The 44-PLCC socketable package simplifies field service and board-level replacement in factory-floor equipment where downtime is costly. For new industrial designs, consider migrating to PIC18F or PIC16F1xxx parts for flash memory and lower supply voltage, but for installed-base retrofits the PIC17C44T-16/L remains a viable, route-proven choice.
Recomendado
Motor Control and PWM Drives
The PIC17C44T-16/L suits small motor control applications because its integrated Capture/Compare/PWM (CCP) modules generate the precise switching waveforms required for brushed DC and stepper drives, while the 16 MHz clock provides sufficient resolution for PWM frequency generation in the tens of kHz range. The 33 I/O pins accommodate direction control, current sensing, and fault inputs. The 16 KB OTP memory holds commutation tables and PID controller code. For three-phase brushless DC, the part's limited PWM channel count may require supplementation with external gate drivers. The 44-PLCC package is preferred in motor control because the socket simplifies prototyping PWM tuning cycles.
Recomendado
Automotive Subsystems (Legacy)
The PIC17C44T-16/L has historically been used in non-safety-critical automotive subsystems such as instrument clusters, HVAC controls, and lighting modules in vehicles designed before the PIC18 era. The 16 KB OTP program memory and 33 I/O pins support segmented LCD driving or LED multiplexing, while the 4.5V-6.0V supply tolerates 12V automotive rails after pre-regulation. AEC-Q100 qualification is NOT standard on the PIC17C44T-16/L, so it is limited to non-safety automotive applications. For new automotive designs, AEC-Q100-qualified PIC18F or dsPIC33 parts should be used instead.
Recomendado
Test and Measurement Instrumentation
The PIC17C44T-16/L is well suited to bench-top test equipment where its 16 KB OTP memory stores calibration tables and instrument firmware, while its 16 MHz clock drives precise timing measurements via the timer/counter modules. The USART peripheral enables communication with a host PC or display, and the 33 I/O pins route signals through front-panel switching relays. The PLCC package is popular in instrumentation because it allows easy firmware updates during development - swap a programmed part into a socketed production unit. For portable instruments, the part's 5V supply may require DC-DC conversion; modern flash MCUs offer wider voltage ranges.
Recomendado
Consumer Electronics Controllers
The PIC17C44T-16/L fits mid-volume consumer products where 16 KB of OTP memory holds appliance control firmware - washing machines, microwave ovens, or HVAC thermostats - and 33 I/O pins drive seven-segment displays, keypads, and relay outputs. OTP memory is acceptable for consumer goods because production volumes amortize programming cost. The PIC17C44's 5V supply matches the rectified mains environment common in white goods. For cost-sensitive products today, designers would typically choose PIC16F1xxx or PIC18F1xxx flash parts because they eliminate the need to program OTP at production and reduce inventory risk for firmware revisions.
Recomendado
Embedded Educational and Prototyping Platforms
The PIC17C44T-16/L is sometimes used in university embedded systems courses and legacy trainer platforms because the 44-PLCC socket simplifies student reprogramming by simply swapping the OTP part. The PIC17C instruction set is a stepping stone between PIC16 mid-range and PIC18 enhanced cores, giving students exposure to Harvard architecture and bank-switched memory. The 16 KB program space is large enough for lab projects (sensor logging, simple RTOS) but small enough to teach manual memory management. Modern curricula have largely migrated to PIC18 or ARM-based boards, but PIC17C44T-16/L-equipped trainers remain in service at many institutions.
Recomendado
Communication Peripherals and Protocol Bridges
The PIC17C44T-16/L fits communication protocol bridge designs where the integrated USART handles serial conversion between legacy RS-232/485 and proprietary buses, and the 16 KB OTP memory stores protocol stacks and lookup tables. The 16 MHz clock is sufficient for bit-banged lower-speed protocols such as I2C and SPI alongside the hardware USART. 33 I/O pins accommodate multiple serial channels and status LEDs. The 5V supply matches RS-232 driver rails directly. For modern designs requiring USB, Ethernet, or CAN, migrate to PIC18F2550 or dsPIC33 parts - the PIC17C44T-16/L is best reserved for legacy bridge retrofits.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC17C44T-16/L — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC17C44-16/L | PIC17C44-16I/L | PIC17C44-25I/L | PIC17C44-25/L | PIC17C43-16/L |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-PLCC (J-lead) 16.59x16.59 mm | 44-PLCC (J-lead) - same | 44-PLCC (J-lead) - same | 44-PLCC (J-lead) - same | 44-PLCC (J-lead) - same | 44-PLCC (J-lead) - same |
| Program Memory | 16 KB OTP | 16 KB OTP | 16 KB OTP | 16 KB OTP | 16 KB OTP | 8 KB OTP (-50%) |
| Max Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 25 MHz (+56%) | 25 MHz (+56%) | 16 MHz |
| Operating Temperature | 0C to +70C (commercial) | 0C to +70C | -40C to +85C (industrial) | -40C to +85C (industrial) | 0C to +70C | 0C to +70C |
| Supply Voltage | 4.5V to 6.0V | 4.5V to 6.0V | 4.5V to 6.0V | 4.5V to 6.0V | 4.5V to 6.0V | 4.5V to 6.0V |
| RAM Size | 454 bytes | 454 bytes | 454 bytes | 454 bytes | 454 bytes | 454 bytes |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| Lifecycle | Obsolete (stock only) | Obsolete (stock only) | Obsolete (stock only) | Obsolete (stock only) | Obsolete (stock only) | Obsolete (stock only) |
Principais diferenciais
- OTP memory model vs UV-EPROM alternative (vs PIC17C44-16I/L (windowed EPROM))
- 16 MHz commercial temp grade drop-in upgrade path (vs PIC17C43-16/L (8 KB memory))
- Faster speed grade available in same package (vs PIC17C44-25I/L (25 MHz upgrade))
Notas de projeto
The PIC17C44T-16/L operates from a single 5V supply (4.5V-6.0V) and draws approximately 5-15 mA active depending on clock speed and peripheral activity. Place a 0.1uF ceramic decoupling capacitor close to each VDD pin (pins 27 and 41 on the 44-PLCC) and a bulk 10uF electrolytic on the board supply rail. The MCLR/VPP pin (pin 44) requires a 10k pull-up to VDD; during in-circuit programming, VPP rises to ~13V which must be blocked from the rest of the circuit by a series resistor or Schottky diode to VDD.
The 44-PLCC J-lead package mounts in a 44-pin PLCC socket, allowing easy field replacement of the OTP part. Use a machined-pin socket for reliable industrial use; the standard stamped sockets are adequate for consumer applications. Keep high-current traces and relay-coil flyback diodes at least 5 mm from the MCU to avoid noise coupling into the analog inputs (RA0-RA5). Ground the PLCC socket's central thermal pad or leave it NC per the socket datasheet.
OTP memory cannot be erased - a programming error permanently bricks the part. Verify the configuration bits (oscillator selection, watchdog enable, code protection, brown-out voltage) in software BEFORE writing them to the PIC17C44. The PIC17C bank-switched RAM requires careful linker setup; declared arrays exceeding 256 bytes must be placed using bank qualifiers. Unlike PIC18, the PIC17C44's PCLATH must be manually written before any computed goto/call, or program counter will wrap to incorrect addresses.
Route the oscillator traces (OSC1/OSC2, pins 7-8) short and symmetric, with the crystal or ceramic resonator within 10 mm of the IC. Place load capacitors (typically 15-33 pF) directly at the IC pins, not at the crystal. For ADC accuracy, isolate analog traces (RA0-RA5) from digital switching lines by at least 3x the trace-to-trace spacing; use a ground guard trace around analog inputs if the board has significant digital noise.
Informações de conformidade
PIC17C44T-16/L is a legacy 44-PLCC part predating RoHS; solder finish contains lead per PLCC manufacturing standards of its era. AEC-Q100 qualification is NOT standard on this part - it is not qualified for safety-critical automotive applications. REACH compliance pertains to substance declarations only.
