PIC17C43-33/L - 8-bit 33MHz OTP MCU 8KB 44-PLCC | Microchip
Référence : PIC17C43-33/L ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $14.83 | $14,83 |
| 10 | $13.35 | $133,50 |
| 100 | $11.45 | $1 145,00 |
| 500 | $9.85 | $4 925,00 |
| 1 000 | $8.95 | $8 950,00 |
PIC17C43-33/L Présentation
A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, I/O peripherals, and interrupt logic on one silicon die. The PIC17C family is Microchip's high-end 8-bit architecture, extending the PIC16C baseline with a wider 16-bit instruction word, an 8-level hardware stack, and a peripheral set tuned for instrumentation, motor control, and industrial automation. In the broader taxonomy, the PIC17C43 sits above PIC16C, PIC12C and PIC16F families but below the PIC18 and 16-bit dsPIC families, making it a transitional part for designs that have outgrown the PIC16 instruction budget but still need 8-bit cost efficiency.
Key features include a capture/compare/PWM module, an 8-bit parallel slave port for external bus expansion, two 8-bit timers plus one 16-bit timer/watchdog, USART serial port, and a versatile 12-bit analog interface. Brown-out reset, power-on reset, and a watchdog timer provide robust field reliability. The OTP program memory supports one-time programming via a universal programmer, which is suitable for production runs where firmware is finalized.
Typical applications include industrial process controllers, automotive body and instrument cluster modules, smart sensor front-ends, and legacy embedded platforms designed around the PIC17C instruction set. When selecting this part, verify your firmware programmer supports the PIC17C device family, since the PIC17C instruction set differs from the more common PIC16C/PIC16F families.
Alternatives de remplacement direct pour PIC17C43-33/L — 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 PIC17C43-33/L (même facteur de forme et même empreinte) — différant par Package, Program Memory Type, Core Architecture, Program Memory Size, Operating Temperature.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC17C43-16/L
✅ Remplacement direct✓ En stock
$5.1 / unité
Voir la fiche technique →PIC17C43-25E/PT
✅ Remplacement direct✓ En stock
$10.85 / unité
Voir la fiche technique →PIC17C44-33/L
✅ Remplacement direct✓ En stock
$9.45 / unité
Voir la fiche technique →PIC17C43-16I/PQ
✅ Remplacement direct✓ En stock
$4.82 / unité
Voir la fiche technique →PIC17C43-16I/PT
✅ Remplacement direct✓ En stock
$5.3 / unité
Voir la fiche technique →PIC17C42A-33I/P
✅ Remplacement direct✓ En stock
$6.2 / unité
Voir la fiche technique →PIC17C43-33/L Valeurs maximales et caractéristiques électriques
| Product Type | 8-bit Microcontroller (MCU) |
| Family | PIC17C |
| Program Memory | 8 KB (4K x 16) OTP |
| RAM | 454 bytes |
| I/O Pins | 33 |
| CPU Speed | 33 MHz |
| Throughput | 8.25 MIPS (121 ns instruction cycle) |
| Architecture | RISC, 58 single-word instructions |
| Boîtier | 44-pin PLCC (16.59 x 16.59 mm) |
| Type de mémoire | OTP (One-Time Programmable) |
| Timers | Two 8-bit + one 16-bit timer/watchdog |
| Communication | USART |
| Température de fonctionnement | Commercial (0C to +70C) |
| Type de montage | Surface Mount |
Configuration des broches de PIC17C43-33/L
| Broche 1 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Broche 2 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Broche 3 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Broche 4 | RA3/AN3 — PORTA bit 3 / analog input 3 |
| Broche 5 | RA4/AN4 — PORTA bit 4 / analog input 4 |
| Broche 6 | RA5/AN5 — PORTA bit 5 / analog input 5 |
| Broche 7 | RA6/OSC1 — PORTA bit 6 / oscillator input |
| Broche 8 | RA7/OSC2 — PORTA bit 7 / oscillator output |
| Broche 9 | VSS — Ground |
| Broche 10 | RB0/INT — PORTB bit 0 / external interrupt |
| Broche 11 | RB1 — PORTB bit 1 |
| Broche 12 | RB2 — PORTB bit 2 |
| Broche 13 | RB3 — PORTB bit 3 |
| Broche 14 | RB4 — PORTB bit 4 |
| Broche 15 | RB5 — PORTB bit 5 |
| Broche 16 | RB6 — PORTB bit 6 |
| Broche 17 | RB7 — PORTB bit 7 |
| Broche 18 | RC0 — PORTC bit 0 |
| Broche 19 | RC1 — PORTC bit 1 |
| Broche 20 | RC2 — PORTC bit 2 |
| Broche 21 | RC3 — PORTC bit 3 |
| Broche 22 | RC4 — PORTC bit 4 |
| Broche 23 | RC5 — PORTC bit 5 |
| Broche 24 | RC6 — PORTC bit 6 |
| Broche 25 | RC7 — PORTC bit 7 |
| Broche 26 | RD0 — PORTD bit 0 |
| Broche 27 | RD1 — PORTD bit 1 |
| Broche 28 | RD2 — PORTD bit 2 |
| Broche 29 | RD3 — PORTD bit 3 |
| Broche 30 | RD4 — PORTD bit 4 |
| Broche 31 | RD5 — PORTD bit 5 |
| Broche 32 | RD6 — PORTD bit 6 |
| Broche 33 | RD7 — PORTD bit 7 |
| Broche 34 | RE0 — PORTE bit 0 |
| Broche 35 | RE1 — PORTE bit 1 |
| Broche 36 | RE2 — PORTE bit 2 |
| Broche 37 | MCLR/VPP — Master clear / programming voltage |
| Broche 38 | TOCKI — Timer 0 clock input |
| Broche 39 | VDD — Positive supply voltage |
| Broche 40 | VSS — Ground |
| Broche 41 | TX/CK — USART transmit / clock |
| Broche 42 | RX/DT — USART receive / data |
| Broche 43 | PWM/CCP — PWM output / capture compare |
| Broche 44 | NC — Not connected (per datasheet) |
Applications typiques
PIC17C43-33/L convient pour 7 applications: Industrial Process Controller, Automotive Instrument Cluster, Smart Sensor Front-End, Motor Control and PWM Drive, Legacy Embedded Control Platforms, Educational and Development Boards, Communication Protocol Bridges.
Industrial Process Controller
The PIC17C43-33/L's 33 MHz throughput (8.25 MIPS) and 8 KB OTP program memory make it well-suited for industrial process controllers running multi-loop PID algorithms. The 33 I/O pins support digital sensor inputs, relay drivers, and HMI keypads, while the 454-byte RAM handles setpoint storage and trending buffers. The PIC17C's 8-level hardware stack is sufficient for nested interrupt service routines typical in process control firmware. Industrial designers favor the PLCC-44 socketed package for field serviceability and firmware upgrades via universal programmers.
Recommandé
Automotive Instrument Cluster
The PIC17C43-33/L's high-speed 8-bit core handles automotive instrument cluster tasks including speedometer pulse counting, fuel gauge ADC sampling, and warning lamp multiplexing. The USART peripheral interfaces with body control modules via LIN or K-line protocols. The 8 KB OTP memory accommodates gauge calibration tables and diagnostic routines. Designers should note the commercial 0C to +70C temperature grade of the '-33/L' variant; automotive deployments typically require the -40C to +125C 'E' grade such as PIC17C43-25E/PT.
Recommandé
Smart Sensor Front-End
The PIC17C43-33/L serves as a smart sensor front-end, conditioning analog signals, applying calibration coefficients, and outputting processed data via USART or parallel port. The PIC17C's 16-bit instruction word executes fixed-point arithmetic faster than 14-bit PIC16 cores, enabling real-time linearization of thermocouple and RTD sensors. The 33 I/O pins allow direct connection to multiple sensor channels without external multiplexing. The 454-byte RAM supports moving-average filters for noise rejection in industrial environments.
Recommandé
Motor Control and PWM Drive
The PIC17C43-33/L's capture/compare/PWM module generates precise PWM signals for brushed DC and stepper motor control, while the 33 MHz clock supports high-resolution PWM at 20 kHz switching frequency with fine duty-cycle granularity. The three integrated timers (2x 8-bit + 1x 16-bit) handle encoder feedback, current sensing, and commutation timing. The PIC17C architecture's hardware multiplier and wider instruction word accelerate Park transforms in BLDC drive algorithms. The 33 I/O pins drive H-bridge gate drivers and fault protection circuitry.
Recommandé
Legacy Embedded Control Platforms
The PIC17C43-33/L is widely deployed in legacy embedded platforms designed in the 1990s, including industrial printers, point-of-sale terminals, and HVAC controllers. The OTP memory stores finalized firmware that has shipped in the field for decades. Service and refurbishment operations require this part to maintain existing designs without PCB rework. The PLCC-44 socketed form factor enables easy field replacement. Engineers maintaining these platforms should evaluate migration to PIC18F or dsPIC families only when firmware updates are planned.
Recommandé
Educational and Development Boards
The PIC17C43-33/L is used in educational microcontroller labs and development boards teaching the PIC17C high-end 8-bit architecture. The 8 KB OTP memory is large enough for substantial student projects including assembly-language exercises, interrupt-driven peripherals, and serial communication labs. The 33 MHz speed demonstrates RISC pipeline benefits over older PIC16 designs. Universities maintaining PIC17C curriculum benefit from continued part availability for lab kit production. The PLCC-44 package in a ZIF socket simplifies student programming workflows.
Recommandé
Communication Protocol Bridges
The PIC17C43-33/L's integrated USART and 33 MHz processing enable protocol bridge applications between RS-232, RS-485, and proprietary serial interfaces. The 8 KB OTP holds protocol state machines, while the 454-byte RAM buffers incoming and outgoing packets. The PIC17C's deterministic interrupt latency (121 ns instruction cycle) ensures reliable timing on time-sensitive protocols. The 33 I/O pins handle handshake signals, flow control, and status LEDs in multi-drop serial networks used in industrial automation.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC17C43-33/L — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC17C43-16/L | PIC17C43-25E/PT | PIC17C44-33/L | PIC17C43-16I/PQ | PIC17C42A-33I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-PLCC | 44-PLCC - same | 44-PLCC - same | 44-PLCC - same | 44-PLCC - same | 44-PLCC - same |
| Program Memory | 8 KB OTP | 8 KB OTP - same | 8 KB OTP - same | 16 KB OTP (+100%) | 8 KB OTP - same | 4 KB OTP (-50%) |
| CPU Speed | 33 MHz | 16 MHz (-51%) | 25 MHz (-24%) | 33 MHz - same | 16 MHz (-51%) | 33 MHz - same |
| RAM | 454 bytes | 454 bytes - same | 454 bytes - same | 454 bytes - same | 454 bytes - same | 454 bytes - same |
| I/O Pins | 33 | 33 - same | 33 - same | 33 - same | 33 - same | 33 - same |
| Operating Temperature | 0C to +70C (Commercial) | 0C to +70C - same | -40C to +125C (Extended) | 0C to +70C - same | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Principaux différenciateurs
- Highest-speed 33 MHz grade in the PIC17C43 family (vs PIC17C43-16/L)
- Double program memory vs lower-memory PIC17C42A variant (vs PIC17C42A-33I/P)
- Pin-compatible upgrade path to PIC17C44 for future expansion (vs PIC17C44-33/L)
Notes de conception
The PIC17C43-33/L operates from a single +5V supply on VDD (pin 39). Place a 100 nF decoupling capacitor as close as possible to VDD and a 10 uF bulk capacitor on the supply rail. The MCLR/VPP pin (pin 37) requires a 10 kohm pull-up to VDD for normal operation and can be driven to +13V during OTP programming. Power-on reset is internally generated; no external RC network is required.
Do not confuse the PIC17C43-33/L with the PIC16F877A in PLCC-44 - although both share the same package, their instruction sets differ significantly (16-bit vs 14-bit words, different register maps, different stack depths). Firmware compiled for one family will not execute on the other. Also note that OTP memory is one-time programmable only - the PIC17C43/JW windowed EPROM variant is required for development and code iteration.
Route the crystal oscillator traces (OSC1/OSC2, pins 7-8) as short as possible and keep them away from high-current switching traces. Use a ground guard ring around the crystal and load capacitors to reduce EMI susceptibility. For 33 MHz operation, place the crystal within 10 mm of the OSC pins. The PLLCC-44 package's J-leads provide good RF grounding through the bottom-side thermal pad if soldered to a ground pour.
The PIC17C43-33/L in PLCC-44 package has a thermal resistance (theta JA) of approximately 45 C/W. At maximum operating current of 50 mA (33 MHz, all peripherals active), power dissipation is 250 mW, resulting in a junction temperature rise of about 11C above ambient. The commercial 0C to +70C specification provides adequate margin for typical embedded enclosure environments without active cooling.
Informations de conformité
RoHS, REACH, lead-free, and halogen-free status not specified in the verified distributor data. PIC17C43-33/L is not AEC-Q100 qualified - for automotive applications choose PIC17C43-25E/PT or PIC17C43 with 'E' temperature suffix.
