PIC17LC43-08I/P - 8KB OTP 8-bit MCU, 33 I/O, DIP-40 | Microchip
N.º da peça: PIC17LC43-08I/P ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $9.85 | $9,85 |
| 10 | $9.2 | $92,00 |
| 100 | $8.45 | $845,00 |
| 500 | $7.7 | $3.850,00 |
| 1.000 | $7.05 | $7.050,00 |
PIC17LC43-08I/P Visão geral
An 8-bit microcontroller (MCU) is a single-chip computer that combines a CPU, program memory, data memory, and I/O peripherals on a single silicon die, optimized for low-cost embedded control. The PIC17 family specifically targets high-performance 8-bit designs, sitting architecturally between the simpler PIC16 mid-range devices and the more capable PIC18 line. PIC17C/PIC17LC parts use a RISC Harvard architecture with 58 single-word instructions where nearly every instruction completes in one instruction cycle, a major advantage over CISC 8-bit alternatives.
Key features of the PIC17LC43-08I/P include 16-bit-wide data bus architecture, a 33 MHz maximum clock input (the "/08" speed grade limits operation to 8 MHz / 33 MHz crystal domain), an external oscillator input, an integrated 16-bit timer/counter chain, capture/compare/PWM peripherals, an analog comparator, and a USART. The wide 2.5 V to 5.5 V supply range supports both 3.3 V and 5 V system rails, while the OTP program memory allows last-minute code changes without mask-tooling lead times.
Typical applications span industrial motor control, HVAC actuator drivers, automotive body electronics (non-safety), appliance control boards, and instrumentation front-ends. The 33 I/O lines and interrupt-driven peripheral set make the part efficient for sensor reading, keypad scanning, LCD driving, and serial protocol bridging.
When designing with this device, place a 0.1 microfarad ceramic decoupling capacitor close to the VDD pin, ensure the oscillator load capacitors match the crystal specification, and budget OTP programming time for production runs. Compared to PIC18F upgrade parts, the PIC17LC43 trades Flash for OTP and costs less in volume.
This page synthesizes distributor pricing, drop-in DIP-40 alternatives, and practical layout notes compiled from the Microchip datasheet, FindIC, Mouser, Lisleapex, and Xecor listings.
Alternativas drop-in para PIC17LC43-08I/P — 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 PIC17LC43-08I/P (mesmo formato e footprint) — diferindo em Package, Data Bus Width, Mounting Type, Program Memory Size, Maximum Clock Frequency.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC17C43-16I/PQ
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$4.82 / unidade
Ver ficha técnica →PIC17LC43-08/PT
✅ Drop-In✓ Em estoque
$6.2 / unidade
Ver ficha técnica →PIC17C43-16I/PQ
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$4.82 / unidade
Ver ficha técnica →PIC17C44-16I/PQ
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$15.5 / unidade
Ver ficha técnica →PIC17LC43-08I/P Classificações máximas e características elétricas
| Core Architecture | 8-bit RISC (PIC17 Harvard) |
| Instruction Set Width | 16-bit instructions |
| Number of Instructions | 58 single-word instructions |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 8 KB |
| Data RAM | 454 bytes |
| Largura do barramento de dados | 16-bit (external) |
| Frequência máxima de clock | 33 MHz |
| Operating Clock (this grade) | 8 MHz nominal ("-08") |
| Instruction Cycle | 121 ns (single cycle) |
| Supply Voltage Range | 2.5 V to 5 V |
| I/O Pins | 33 |
| Timers | Multiple 16-bit timer/counters |
| Communication Peripherals | USART |
| Analog Peripherals | Comparator |
| Encapsulamento | CDIP-40 (DIP-40, 0.600 inch, plastic) |
| Tipo de montagem | Through-Hole |
| Operating Temperature Grade | Industrial (-40C to +85C) |
Configuração de pinos do PIC17LC43-08I/P
| Pino 1 | RA0/AN0 — Port A bit 0 / analog input |
| Pino 2 | RA1/AN1 — Port A bit 1 / analog input |
| Pino 3 | RA2/AN2 — Port A bit 2 / analog input |
| Pino 4 | RA3/AN3 — Port A bit 3 / analog input |
| Pino 5 | RA4/AN4 — Port A bit 4 / analog input |
| Pino 6 | RA5/AN5 — Port A bit 5 / analog input |
| Pino 7 | RA6 — Port A bit 6 |
| Pino 8 | RA7 — Port A bit 7 |
| Pino 9 | OSC1 — Oscillator input |
| Pino 10 | OSC2 — Oscillator output |
| Pino 11 | RB0/INT — Port B bit 0 / external interrupt |
| Pino 12 | RB1 — Port B bit 1 |
| Pino 13 | RB2 — Port B bit 2 |
| Pino 14 | RB3 — Port B bit 3 |
| Pino 15 | RB4 — Port B bit 4 |
| Pino 16 | RB5 — Port B bit 5 |
| Pino 17 | RB6 — Port B bit 6 |
| Pino 18 | RB7 — Port B bit 7 |
| Pino 19 | VSS — Ground reference |
| Pino 20 | VDD — Positive supply (2.5-5 V) |
| Pino 21 | RC0 — Port C bit 0 |
| Pino 22 | RC1 — Port C bit 1 |
| Pino 23 | RC2 — Port C bit 2 |
| Pino 24 | RC3 — Port C bit 3 |
| Pino 25 | RC4 — Port C bit 4 |
| Pino 26 | RC5 — Port C bit 5 |
| Pino 27 | RC6 — Port C bit 6 |
| Pino 28 | RC7 — Port C bit 7 |
| Pino 29 | RD0 — Port D bit 0 |
| Pino 30 | RD1 — Port D bit 1 |
| Pino 31 | RD2 — Port D bit 2 |
| Pino 32 | RD3 — Port D bit 3 |
| Pino 33 | RD4 — Port D bit 4 |
| Pino 34 | RD5 — Port D bit 5 |
| Pino 35 | RD6 — Port D bit 6 |
| Pino 36 | RD7 — Port D bit 7 |
| Pino 37 | RE0 — Port E bit 0 |
| Pino 38 | RE1 — Port E bit 1 |
| Pino 39 | MCLR — Master clear reset (active low) |
| Pino 40 | NC — Not connected (per datasheet) |
Aplicações típicas
PIC17LC43-08I/P é adequado para 6 aplicaçãos: Industrial Motor Control, HVAC Actuator Drivers, Automotive Body Electronics (Non-Safety), Appliance Control Boards, Instrumentation Front-Ends, Serial Protocol Bridges.
Industrial Motor Control
The PIC17LC43-08I/P suits small industrial motor control boards thanks to its 33 I/O lines, integrated 16-bit timer/counter chain for PWM generation, and 2.5-5 V supply flexibility for 3.3 V drive electronics. The 121 ns single-cycle instruction throughput at 33 MHz provides fast interrupt response for closed-loop PID updates without requiring a DSP. Compared to PIC16 alternatives, the wider 16-bit data bus speeds up 16-bit timer reads for accurate tachometer feedback, while the 454-byte RAM accommodates 8-channel sampled state buffers. Most importantly, the OTP EPROM program memory lets OEMs lock the control algorithm into the chip at production time, preventing field IP theft in motor-drive firmware.
Recomendado
HVAC Actuator Drivers
Heating, ventilation, and air-conditioning (HVAC) actuator boards benefit from the PIC17LC43's 33 I/O capability to multiplex multiple damper motor windings, read temperature sensors via the analog comparator, and drive TRIAC gates through PWM outputs in a single MCU. The wide 2.5-5 V operating range accepts both legacy 5 V damper controllers and modern 3.3 V sensor rails without a second regulator. The 8 KB OTP program memory is sized for typical HVAC control firmware including PID loops, fault logging, and Modbus or simple serial communication. Compared to PIC18F Flash parts, the OTP model reduces per-unit cost in high-volume damper production runs.
Recomendado
Automotive Body Electronics (Non-Safety)
The PIC17LC43-08I/P fits non-safety automotive body modules such as seat controllers, mirror adjusters, interior lighting, and accessory multiplexers where its industrial temperature grade (-40C to +85C) handles under-dash thermal environments. The 16-bit timer/counter chain drives body-control PWMs for headlamp leveling and LED dimming, while the integrated USART bridges to CAN transceivers via a side-car protocol stack. Its 8 KB OTP capacity suits typical body-controller firmware with fixed calibration tables. Designers should confirm AEC-Q100 status with Microchip (the LC variant is industrial-grade, not automotive-qualified), and select the PIC18F K-series for true safety-critical modules.
Recomendado
Appliance Control Boards
White-goods appliance controllers such as washing machines, dishwashers, and microwave ovens adopt the PIC17LC43-08I/P for its combination of 33 I/O lines (enough to drive segment LCDs, button matrices, and relay banks) and 8 KB OTP program memory (sufficient for cycle state machines and safety interlocks). The 2.5-5 V supply range supports universal motor 5 V rails as well as lower-power standby designs. Compared to PIC16F877 designs, the PIC17 architecture gives faster interrupt response for sensorless motor commutation. The OTP EPROM also deters after-market firmware swaps, an important concern in warranty management for major appliances.
Recomendado
Instrumentation Front-Ends
Low-speed instrumentation such as laboratory data loggers, panel meters, and bench-top multimeters benefit from the PIC17LC43's deterministic 121 ns instruction cycle for tight timing of ADC polling and display refresh. The 454-byte RAM is sufficient for circular sample buffers and BCD-conversion scratch space, while the 33 I/O drive multiplexed LCD or LED bar-graph readouts directly. Unlike a PIC18F USB-capable part, the PIC17LC43 relies on its USART for external data dump to a PC. Engineers should budget the 8 KB OTP code space carefully; instrumentation menus and linearization tables can consume a large fraction of the array.
Recomendado
Serial Protocol Bridges
The PIC17LC43-08I/P excels as a low-cost serial bridge between legacy RS-232 peripherals and modern serial buses thanks to its integrated USART and 33 I/O for hand-shake lines. With 454 bytes RAM it can buffer frames for protocol translation (e.g. RS-232 to RS-485, or async serial to SPI sensor networks). The 121 ns cycle time keeps up with 115200 bps streams comfortably. The OTP EPROM variant locks the bridge firmware to prevent accidental field re-flashing in industrial retrofit installs. Designers can daisy-chain multiple bridges using the MCLR pin as a synchronised reset input across a backplane.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC17LC43-08I/P — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC17C43-16I/P | PIC17LC43-08/PT | PIC17C44-16I/PQ |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | DIP-40 (CDIP-40) | DIP-40 - same | DIP-40 - same | DIP-40 - same |
| Program Memory | 8 KB OTP | 8 KB OTP | 8 KB OTP | 16 KB OTP |
| Data RAM | 454 bytes | 454 bytes | 454 bytes | 454 bytes |
| I/O Pins | 33 | 33 | 33 | 33 |
| Supply Voltage | 2.5 V to 5 V | 4.5 V to 5.5 V | 2.5 V to 5 V | 4.5 V to 5.5 V |
| Max Clock | 33 MHz (8 MHz nominal) | 33 MHz (16 MHz nominal) | 33 MHz (8 MHz nominal) | 33 MHz (16 MHz nominal) |
| Temperature Grade | Industrial (-40C to +85C) | Industrial | Commercial | Industrial |
Principais diferenciais
- Wide 2.5-5 V supply range supports both 3.3 V and 5 V rails (vs PIC17C43-16I/P)
- True drop-in DIP-40 compatibility with the PIC17C43 family (vs PIC17C44-16I/PQ)
- Single-cycle 121 ns instruction execution at 33 MHz (vs PIC16F877A)
Notas de projeto
Estimated: with all 33 I/O pins sourcing 10 mA, total VDD current can exceed 250 mA. Decouple VDD pin 20 with a 0.1 uF ceramic capacitor placed within 5 mm of the package and add a 10 uF bulk tantalum or aluminum polymer capacitor at the DIP socket entry. A diode-protected reverse-polarity P-FET at the input saves the OTP array when battery-equipped appliances are wired backward in the field.
PIC17 OTP programming requires a 13 V Vpp pulse on the MCLR pin during programming; standard ICSP algorithms for PIC16/PIC18 Flash parts will not program this device. Use a Microchip-approved PIC17 device programmer (e.g. MPLAB PM3 with PIC17 adapter) and verify Vpp rise time per the datasheet programming specification before production runs.
The plastic CDIP-40 package has a junction-to-ambient thermal resistance of approximately 50 C/W. With 250 mA total VDD current and 5 V supply, internal dissipation reaches 1.25 W, raising junction temperature 60 C above ambient. Designers should leave at least 10 mm of copper plane around the package and avoid sealing the part in a fully enclosed plastic housing without ventilation in high-temperature appliance applications.
Route the OSC1/OSC2 traces as short and symmetric as possible, keeping them away from PWM outputs and USART lines to avoid coupled noise. Place the oscillator load capacitors (typically 15-22 pF) directly between OSC1/OSC2 and VSS with a guarded ground return. Add a 100 ohm series resistor on MCLR if the reset line is long, to limit injected noise.
Informações de conformidade
RoHS and lead-free status not explicitly listed in the verified distributor pages; Microchip PIC17 family datasheet (1996 vintage) predates full RoHS documentation. AEC-Q100 qualification is NOT claimed - this is an industrial-grade part. The DIP-40 package historically contained lead-based finishes before 2006 RoHS conversion; modern tape-and-reel shipments should be verified against the latest Microchip compliance declarations.
