PIC17C43T-16/L - 8KB OTP 8-bit MCU 16MHz 44-PLCC | Microchip
N.º da peça: PIC17C43T-16/L ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.2 | $162,00 |
| 100 | $13.85 | $1.385,00 |
| 500 | $11.5 | $5.750,00 |
| 1.000 | $9.95 | $9.950,00 |
PIC17C43T-16/L Visão geral
What is an 8-bit OTP microcontroller? An 8-bit OTP MCU is a microcontroller built around an 8-bit data path whose program memory is a One-Time Programmable EPROM cell—each bit can be programmed exactly once with an EPROM writer and exposed to UV light for erasure. These parts occupy a middle position in the hierarchy: microcontroller -> embedded controller -> 8-bit MCU -> OTP EPROM MCU -> RISC controller -> semiconductor. The PIC17C43 uses Microchip's enhanced PIC 17C core, which delivers up to 8.25 MIPS (121 ns instruction cycle) and supports 58 single-word instructions, making it significantly faster than legacy PIC16C5X devices while remaining source-code compatible.
Key features include 33 digital I/O lines organized as 4 ports, a hardware multiply (8 x 8 in one cycle), 16-bit data bus architecture, Power-on Reset (POR), Brown-out Reset, Watchdog Timer (WDT), Pulse Width Modulation (PWM) peripherals, a Capture/Compare/PWM (CCP) module, and an 8-level deep hardware stack. The OTP memory is organized as 4K x 16, so each instruction word is 16 bits wide and fetches in one cycle.
The PIC17C43 architecture extends the PIC16CXX instruction set with hardware multiplication, a 16-bit wide program word, and four register page pointers. It is upward-compatible with the PIC16C5X, PIC12CXXX and PIC16CXX families, allowing code migration from smaller PICs with minimal redesign. The 16 MHz oscillator yields a 4 MHz instruction rate (divide-by-4) and an effective 8.25 MIPS throughput.
Typical applications include industrial automation controllers, motor control, HVAC, security alarm panels, consumer appliance control, smart-card readers, and embedded control modules. The 33 I/O lines are sufficient for keypad scanning, LED matrix driving, and parallel sensor interfacing. The PWM and CCP modules make the PIC17C43 well-suited for brush-DC and stepper motor drive designs in low-cost industrial equipment.
Designers should note that the PIC17C43 has been replaced by the PIC18F family (Microchip recommends PIC18F4220). New designs should target the PIC18F, but the PIC17C43T-16/L remains available for legacy maintenance and repair. The OTP memory cannot be re-programmed, so production firmware must be fully validated before device programming.
This page synthesizes verified distributor pricing, drop-in compatible Microchip alternatives, and engineering design notes for the PIC17C43T-16/L that complement the manufacturer's datasheet.
Alternativas drop-in para PIC17C43T-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 PIC17C43T-16/L (mesmo formato e footprint) — diferindo em Operating Temperature, Package, Program Memory Type, Maximum Clock Frequency, Core Architecture.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC17C43-16/L
✅ Drop-In✓ Em estoque
$5.1 / unidade
Ver ficha técnica →PIC17C43T-25/L
✅ Drop-In✓ Em estoque
$6.9 / unidade
Ver ficha técnica →PIC17C43T-16I/L
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC17C43-25E/L
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$9.78 / unidade
Ver ficha técnica →PIC17C43/JW
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$10.95 / unidade
Ver ficha técnica →PIC17C43T-16/L Classificações máximas e características elétricas
| Core Architecture | PIC 8-bit RISC |
| Program Memory Size | 8 KB (4K x 16) |
| Program Memory Type | OTP EPROM |
| RAM Size | 454 x 8 bytes |
| Maximum CPU Speed | 16 MHz |
| Instruction Cycle | 250 ns (4 MHz instruction rate) |
| Throughput | 8.25 MIPS |
| Largura do barramento de dados | 16-bit (instruction word) |
| Supply Voltage Range | 4.5 V to 6.0 V |
| I/O Pins | 33 |
| Timers | 4 x 8/16-bit |
| PWM Channels | 2 (Capture/Compare/PWM) |
| Watchdog Timer | Yes (WDT) |
| Brown-out Reset | Yes |
| Power-on Reset | Yes |
| Hardware Multiplier | 8 x 8 single-cycle |
| Hardware Stack | 8 levels |
| Temperatura de operação | 0 °C to +70 °C (Commercial) |
| Encapsulamento | 44-pin PLCC (J-lead) |
| Tipo de montagem | Surface Mount |
| Package Dimensions | 16.59 x 16.59 mm |
Configuração de pinos do PIC17C43T-16/L
| Pino 1 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Pino 2 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Pino 3 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| Pino 4 | RA3/AN3 — Port A bit 3 / Analog input 3 |
| Pino 5 | RA4/T0CKI — Port A bit 4 / Timer 0 clock input |
| Pino 6 | RA5/SS — Port A bit 5 / SPI slave select |
| Pino 7 | OSC1/CLKIN — Crystal oscillator input / external clock |
| Pino 8 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| Pino 9 | MCLR/VPP — Master clear reset / programming voltage |
| Pino 10 | VSS — Ground |
| Pino 11 | VDD — Positive supply voltage |
| Pino 12 | RB0/INT — Port B bit 0 / External interrupt |
| Pino 13 | RB1 — Port B bit 1 |
| Pino 14 | RB2 — Port B bit 2 |
| Pino 15 | RB3 — Port B bit 3 |
| Pino 16 | RB4 — Port B bit 4 |
| Pino 17 | RB5 — Port B bit 5 |
| Pino 18 | RB6 — Port B bit 6 |
| Pino 19 | RB7 — Port B bit 7 |
| Pino 20 | RC0 — Port C bit 0 |
| Pino 21 | RC1 — Port C bit 1 |
| Pino 22 | RC2 — Port C bit 2 |
| Pino 23 | RC3 — Port C bit 3 |
| Pino 24 | RC4 — Port C bit 4 |
| Pino 25 | RC5 — Port C bit 5 |
| Pino 26 | RC6 — Port C bit 6 |
| Pino 27 | RC7 — Port C bit 7 |
| Pino 28 | RD0 — Port D bit 0 |
| Pino 29 | RD1 — Port D bit 1 |
| Pino 30 | RD2 — Port D bit 2 |
| Pino 31 | RD3 — Port D bit 3 |
| Pino 32 | RD4 — Port D bit 4 |
| Pino 33 | RD5 — Port D bit 5 |
| Pino 34 | RD6 — Port D bit 6 |
| Pino 35 | RD7 — Port D bit 7 |
| Pino 36 | RE0 — Port E bit 0 |
| Pino 37 | RE1 — Port E bit 1 |
| Pino 38 | RE2 — Port E bit 2 |
| Pino 39 | NC — Not connected (per datasheet) |
| Pino 40 | NC — Not connected (per datasheet) |
| Pino 41 | NC — Not connected (per datasheet) |
| Pino 42 | NC — Not connected (per datasheet) |
| Pino 43 | VSS — Ground |
| Pino 44 | VDD — Positive supply voltage |
Aplicações típicas
PIC17C43T-16/L é adequado para 6 aplicaçãos: Industrial Automation Controllers, Motor Control and PWM Drives, Consumer Appliance Control, Security and Alarm Panel Systems, Smart Card and Embedded Reader Modules, HVAC and Building Automation.
Industrial Automation Controllers
The PIC17C43T-16/L fits industrial automation controllers because its 33 I/O lines, 16 MHz (8.25 MIPS) throughput, and hardware 8x8 multiplier allow real-time handling of sensor scanning, relay actuation, and PID control loops on assembly lines. With 454 bytes of RAM and 8 KB OTP program memory, it can host small state machines and Modbus-RTU slave protocol stacks. The PLCC package supports socketed installation for field-replaceable modules, and the commercial temperature range (0 to +70 C) covers most factory-floor enclosures. Engineers should pair the PIC17C43 with external watchdog supervisors and use the brown-out reset feature to survive 24V industrial bus transients.
Recomendado
Motor Control and PWM Drives
The PIC17C43T-16/L is well-suited for low-cost motor control applications, including brush-DC, stepper, and small induction motor drives, thanks to its two Capture/Compare/PWM channels and 8.25 MIPS instruction throughput. The on-chip PWM module can generate complementary drive signals for H-bridge power stages at switching frequencies up to 50 kHz with 10-bit resolution, while the hardware 8x8 multiplier enables real-time computation of PI current-loop setpoints. The 33 I/O pins accommodate encoder inputs, current-sense comparators, and fault shutdown signals. Designers should connect the PWM outputs through gate drivers such as the IR2104 and include flyback diodes on inductive loads.
Recomendado
Consumer Appliance Control
The PIC17C43T-16/L serves consumer appliance controllers—washing machines, dishwashers, microwave ovens, and HVAC thermostats—where its 16 MHz throughput, 33 I/O, and integrated peripherals (PWM, timers, ADC interface) cover typical control requirements. The 8 KB OTP memory accommodates user-interface menu logic, sensor calibration tables, and safety-state machines, while the 454-byte RAM supports real-time display buffering. The 4.5-6 V operating range aligns with 5 V regulated supplies common in white goods, and the PLCC package provides robust mechanical mounting for appliance PCB assemblies. Use the brown-out reset to survive brown-out events during compressor inrush.
Recomendado
Security and Alarm Panel Systems
The PIC17C43T-16/L is used in security alarm panels and access-control systems where its 33 I/O lines interface with PIR motion sensors, magnetic reed switches, keypads, and siren drivers. The hardware watchdog timer (WDT) protects against firmware lockup, a critical requirement for unattended security equipment. With 8 KB OTP and 454 bytes RAM, the controller can manage zone monitoring, event logging, and dialer communications. The PLCC package allows socketed replacement during service calls, and the 16 MHz clock provides adequate bandwidth for keypad debouncing, encryption-like challenge-response protocols, and serial communications.
Recomendado
Smart Card and Embedded Reader Modules
The PIC17C43T-16/L is appropriate for embedded smart-card reader modules and point-of-sale terminals due to its 16 MHz throughput (sufficient for 9600-115200 baud serial protocols), hardware multiplier, and 33 I/O lines for card interface, keypad, and display driving. The OTP memory (8 KB) stores secure firmware with anti-tamper features, and the PLCC package supports secure board-mounting. The commercial temperature range (0 to +70 C) covers indoor retail environments. For PCI-compliant designs, pair the PIC17C43 with external cryptographic accelerators; for new designs, the PIC18F46K20 with hardware AES support is preferred.
Recomendado
HVAC and Building Automation
The PIC17C43T-16/L supports HVAC and building-automation controllers managing thermostats, damper actuators, and zone-valve control. The two CCP/PWM channels generate variable-speed fan drive signals, while the 33 I/O lines interface with thermistor temperature sensors, humidity transducers, and LCD display modules. The hardware 8x8 multiplier accelerates floating-point-style PI control calculations on temperature setpoints, and the 454-byte RAM holds scan tables for multi-zone environments. With a brown-out reset and watchdog timer, the controller reliably recovers from line-voltage disturbances common in HVAC equipment compartments.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC17C43T-16/L — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC17C43-16/L | PIC17C43T-25/L | PIC17C43T-16I/L | PIC17C43-25E/L | PIC17C43/JW |
|---|---|---|---|---|---|---|
| Package | 44-pin PLCC (J-lead) | 44-pin PLCC - same | 44-pin PLCC - same | 44-pin PLCC - same | 44-pin PLCC - same | 44-pin PLCC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max Clock Speed | 16 MHz | 16 MHz | 25 MHz | 16 MHz | 25 MHz | 16 MHz |
| Program Memory | 8 KB OTP | 8 KB OTP | 8 KB OTP | 8 KB OTP | 8 KB OTP | 8 KB UV-EPROM |
| RAM Size | 454 bytes | 454 bytes | 454 bytes | 454 bytes | 454 bytes | 454 bytes |
| Operating Temperature | 0 to +70 C (Commercial) | 0 to +70 C | 0 to +70 C | -40 to +85 C (Industrial) | -40 to +125 C (Extended) | 0 to +70 C |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | Obsolete (legacy prototyping) |
| Approx. Unit Price (1pc) | $18.50 | $17.20 | $19.80 | $21.50 | $22.00 | $45.00 (windowed, prototype) |
Principais diferenciais
- Highest-throughput 8-bit PIC17C variant at commercial temperature grade (vs PIC17C42A-16/P)
- Commercial temperature grade (0 to +70 C) versus industrial-grade -16I variants (vs PIC17C43T-16I/L)
- Enhanced PIC 17C core with hardware 8x8 multiplier and 16-bit instruction word (vs PIC16C77-20/P)
Notas de projeto
The PIC17C43T-16/L uses OTP (One-Time Programmable) EPROM memory—it cannot be re-programmed in-circuit. Once the EPROM cell is written, firmware bugs require UV-light erasure (not possible on the plastic PLCC package) or device replacement. Design teams should validate firmware on a windowed PIC17C43/JW prototype before committing to OTP production units. Bit-level security fuse (CP bit) prevents code readback but is irreversible; triple-check code before enabling. Programming voltage (VPP) is applied to the MCLR/VPP pin (pin 9); use a Microchip-approved programmer such as PICSTART Plus or MPLAB PM3.
Operating supply is 4.5 V to 6.0 V (5 V nominal); the part is NOT 3.3 V tolerant. Use a 5 V LDO regulator such as the LM7805 or MCP1700-5002E. Brown-out reset (BOR) is enabled by configuration bits and should remain enabled to protect against supply droop during motor inrush or relay switching. Decoupling: place a 100 nF ceramic capacitor as close as possible to each VDD/VSS pair (pins 11/10 and 44/43), plus a 10 uF bulk capacitor on the supply rail. The MCLR pin (pin 9) should be pulled up to VDD through a 10 kOhm resistor and decoupled with a 100 nF capacitor to prevent spurious resets.
The 44-pin PLCC package requires a 1.27 mm pitch socket or land pattern. Place the PLCC socket with pin 1 indicator oriented to match the dot/notch on the device. Keep analog inputs (RA0-RA5) physically separated from PWM outputs and switching nodes to minimize coupling; route the crystal traces (OSC1/OSC2, pins 7/8) as short as possible with a ground guard ring. For high-noise environments, add a 4-layer PCB with dedicated ground plane. Leave room for a 4-pin ICSP header (VDD, VSS, MCLR/VPP, RB6/PGD, RB7/PGC) for production programming.
The PIC17C43T-16/L I/O pins can source/sink 20 mA per pin (40 mA per port), with a total package limit of 200 mA. For LED driving or relay control, use a driver transistor (e.g., 2N2222 or MOSFET) rather than direct pin drive. Series-terminate clock or high-speed signal lines with 33-100 ohm resistors if ringing is observed. The Capture/Compare/PWM (CCP) outputs generate fast edges (10 ns rise/fall); for PWM frequencies above 20 kHz, use shielded cable or twisted-pair wiring to external drivers. If using the analog inputs (RA0-RA5), add an external buffer op-amp to maintain source impedance below 10 kOhm for ADC accuracy.
Informações de conformidade
PIC17C43T-16/L is NOT RoHS compliant (uses lead-based solder finish on PLCC J-leads); check the RoHS-compliant alternative PIC17C43T-16E/L or the PIC18F4220 for new RoHS-compliant designs. AEC-Q100 not qualified; this part is not intended for automotive safety-critical applications.
