PIC17C43T-33I/L - 33MHz 8-bit OTP MCU, 8KB, 44-PLCC | Microchip
MPN: PIC17C43T-33I/L ✗ انتهى عمره الإنتاجيPIC17C43T-33I/L نظرة عامة
A microcontroller (MCU) is a single-chip computer that contains a processor core, program memory, RAM, and programmable I/O peripherals. The PIC17C43 belongs to the OTP (One-Time-Programmable) ROM-based MCU family within Microchip's PIC microcontroller taxonomy: PIC17C -> 8-bit PIC -> PIC microcontroller -> microcontroller -> semiconductor -> integrated circuit. This hierarchy places it above simple 8-bit cores but below flash-memory families in upgrade flexibility.
Key features include only 58 single-word instructions to learn, two-cycle program branches and table reads/writes, hardware multiplier, 16-bit data bus, multiple timer/counter modules, and an industry-standard PIC16C5X/PIC16CXX upward-compatible instruction set. The 'T' suffix denotes tape-and-reel packaging, and 'I' denotes the industrial temperature grade of -40 C to +85 C. The 33 MHz speed code indicates a 121 ns instruction cycle.
Architecturally, the PIC17C43 employs a RISC-based Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and data access. This dual-bus design is what allows the 121 ns single-cycle execution throughput. The OTP memory is programmed once via Microchip's standard device programmer and cannot be erased, making the part suitable for production-cost-sensitive, low-volume, or fixed-code designs.
Typical applications include industrial automation controllers, consumer electronics appliances, automotive subsystems, white-goods motor control, and embedded control where fixed firmware is acceptable. Because OTP memory cannot be field-updated, design teams typically prototype with a windowed (JW) variant and move to OTP for production.
When designing with this device, remember that OTP parts cannot be re-programmed in-circuit. Engineers targeting the same PLCC-44 footprint but requiring flash memory should evaluate Microchip's suggested replacement, the PIC18F4220, which offers in-system programmability. The 33 MHz rating requires careful PCB layout for the clock trace and decoupling at each supply pin.
بدائل مباشرة لـ PIC17C43T-33I/L — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PIC17C43T-33I/L (نفس عامل الشكل والبصمة) — يختلف في Package, Operating Temperature, Program Memory Size, Core Architecture, Mounting Type.
PIC17C43T-25I/L
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC17C43T-33/L
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC17C43T-16/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC17C43-16/L
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC17C43-33I/L
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC17C43-16I/PQ
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC17C42AT-33E/PQ
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC17C43T-33I/L الحدود القصوى والخصائص الكهربائية
| Architecture | 8-bit PIC RISC (Harvard) |
| Instruction Set | 58 single-word instructions |
| Clock Input Frequency | 33 MHz |
| Instruction Cycle Time | 121 ns |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 8 KB (4K x 16) |
| عرض ناقل البيانات | 16-bit |
| I/O Pins | 33 |
| جهد التغذية | 4.5 V to 6 V |
| درجة حرارة التشغيل | -40 C to +85 C (Industrial) |
| العلبة | 44-pin PLCC (J-Lead) |
| Package Code | QCCJ |
| نوع التركيب | Surface Mount |
| Packaging Format | Tape & Reel (T suffix) |
| حالة RoHS | Compliant |
تكوين أطراف PIC17C43T-33I/L
| دبوس 1 | MCLR/VPP — Master Clear (Reset) / Programming voltage input |
| دبوس 2 | OSC1 — Oscillator input / external clock input |
| دبوس 3 | OSC2 — Oscillator output (crystal/ceramic mode) |
| دبوس 4 | VDD — Positive supply voltage (4.5 V to 6 V) |
| دبوس 5 | VSS — Ground reference |
| دبوس 6 | RA0/INT0 — PORTA bit 0 / External interrupt 0 |
| دبوس 7 | RA1/INT1 — PORTA bit 1 / External interrupt 1 |
| دبوس 8 | RA2/INT2 — PORTA bit 2 / External interrupt 2 |
| دبوس 9 | RA3 — PORTA bit 3 |
| دبوس 10 | RA4 — PORTA bit 4 |
| دبوس 11 | RA5 — PORTA bit 5 |
| دبوس 12 | VSS — Ground reference |
| دبوس 13 | RB0/INT3 — PORTB bit 0 / External interrupt 3 |
| دبوس 14 | RB1 — PORTB bit 1 |
| دبوس 15 | RB2 — PORTB bit 2 |
| دبوس 16 | RB3 — PORTB bit 3 |
| دبوس 17 | RB4 — PORTB bit 4 |
| دبوس 18 | RB5 — PORTB bit 5 |
| دبوس 19 | RB6 — PORTB bit 6 |
| دبوس 20 | RB7 — PORTB bit 7 |
| دبوس 21 | VSS — Ground reference |
| دبوس 22 | RC0/T0CKI — PORTC bit 0 / Timer0 clock input |
| دبوس 23 | RC1/CCP1 — PORTC bit 1 / Capture-Compare-PWM 1 |
| دبوس 24 | RC2/CCP2 — PORTC bit 2 / Capture-Compare-PWM 2 |
| دبوس 25 | RC3 — PORTC bit 3 |
| دبوس 26 | RC4 — PORTC bit 4 |
| دبوس 27 | RC5 — PORTC bit 5 |
| دبوس 28 | RC6/TX — PORTC bit 6 / USART transmit |
| دبوس 29 | RC7/RX — PORTC bit 7 / USART receive |
| دبوس 30 | VSS — Ground reference |
| دبوس 31 | RD0 — PORTD bit 0 |
| دبوس 32 | RD1 — PORTD bit 1 |
| دبوس 33 | RD2 — PORTD bit 2 |
| دبوس 34 | RD3 — PORTD bit 3 |
| دبوس 35 | RD4 — PORTD bit 4 |
| دبوس 36 | RD5 — PORTD bit 5 |
| دبوس 37 | RD6 — PORTD bit 6 |
| دبوس 38 | RD7 — PORTD bit 7 |
| دبوس 39 | VSS — Ground reference |
| دبوس 40 | RE0 — PORTE bit 0 |
| دبوس 41 | RE1 — PORTE bit 1 |
| دبوس 42 | RE2 — PORTE bit 2 |
| دبوس 43 | VDD — Positive supply voltage (4.5 V to 6 V) |
| دبوس 44 | NC — Not connected (per datasheet) |
التطبيقات النموذجية
PIC17C43T-33I/L مناسب لـ 6 التطبيقs: Industrial Automation Controllers, Consumer Electronics Appliances, Automotive Subsystems (Pre-Grade), White-Goods Motor Control, Embedded Control Fixed-Firmware Modules, Test Equipment and Instrumentation.
Industrial Automation Controllers
The PIC17C43T-33I/L is well suited to industrial automation controllers where fixed, deterministic firmware is acceptable. With 8.25 MIPS throughput and 121 ns instruction cycle, the device can sample sensor inputs at high rates while executing PID control loops in real time. Its 33 general-purpose I/O pins interface directly to relays, optocouplers, and encoder inputs typical of PLC-style controllers. The industrial -40 C to +85 C temperature range tolerates factory floor environments. The 4.5 V to 6 V supply aligns with 5 V industrial backplanes.
موصى به
Consumer Electronics Appliances
The PIC17C43T-33I/L fits consumer appliances such as washing machines, microwave ovens, and HVAC thermostats where the production volume justifies OTP programming cost. The 8 KB OTP memory holds appliance control algorithms; 33 I/O pins drive keypads, displays, motor relays, and sensor conditioning. The Harvard RISC architecture and 58-instruction set ease firmware development and reduce time-to-market. Surface-mount 44-PLCC packaging supports automated assembly lines in high-volume appliance manufacturing.
موصى به
Automotive Subsystems (Pre-Grade)
The PIC17C43T-33I/L is used in non-safety-critical automotive subsystems such as interior lighting controllers, seat-position memories, and HVAC blend-door actuators. Its 33 MHz clock and 8.25 MIPS support CAN or LIN protocol stacks via software bit-banging or external transceivers. The -40 C to +85 C industrial temperature range covers cabin environments. Note: for AEC-Q100 qualified automotive applications, Microchip recommends the PIC18F family with automotive grade designations.
موصى به
White-Goods Motor Control
The PIC17C43T-33I/L can drive small BLDC or stepper motors in white-goods applications such as refrigerator compressors and dishwasher pumps. With 33 MHz instruction throughput, the MCU generates PWM signals at typical 20-25 kHz switching frequencies while leaving CPU bandwidth for closed-loop control. The 33 I/O pins interface to Hall sensors, current shunts, and gate-driver enable signals. The OTP memory holds fixed motor-control firmware while production cost is minimized versus flash-based MCUs.
موصى به
Embedded Control Fixed-Firmware Modules
The PIC17C43T-33I/L suits embedded control modules shipping with locked firmware such as POS terminals, security alarm panels, and metering devices. OTP memory prevents field firmware tampering. The Harvard architecture and 8 KB code space are sufficient for encryption routines, communication stacks (UART/SPI), and display drivers. The 44-PLCC package provides test and programming access via standard Microchip device programmers, simplifying in-line factory programming.
موصى به
Test Equipment and Instrumentation
The PIC17C43T-33I/L is used in test fixtures and bench instrumentation where fixed measurement algorithms run reliably without field updates. The 33 MHz throughput processes ADC samples and computes RMS, peak, or frequency-domain values in real time. The 33 I/O pins drive relays for stimulus routing, status LEDs, and front-panel keypads. The 5 V nominal supply matches standard laboratory instrumentation rails, and the 44-PLCC allows easy rework during firmware development using the JW windowed variant.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC17C43T-33I/L — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PIC17C43T-25I/L | PIC17C43T-33/L | PIC17C43T-16/PT | PIC17C43-33I/L |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-PLCC (J-Lead) | 44-PLCC (J-Lead) - same | 44-PLCC (J-Lead) - same | 44-PLCC (J-Lead) - same | 44-PLCC (J-Lead) - same |
| Maximum Clock Frequency | 33 MHz | 25 MHz (-24%) | 33 MHz (same) | 16 MHz (-52%) | 33 MHz (same) |
| Instruction Cycle | 121 ns | 160 ns | 121 ns (same) | 250 ns | 121 ns (same) |
| Program Memory | 8 KB (4K x 16) OTP | 8 KB OTP (same) | 8 KB OTP (same) | 8 KB OTP (same) | 8 KB OTP (same) |
| I/O Pins | 33 | 33 | 33 | 33 | 33 |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | 0 C to +70 C (Commercial) | 0 C to +70 C (Commercial) | -40 C to +85 C |
| Supply Voltage | 4.5 V to 6 V | 4.5 V to 6 V | 4.5 V to 6 V | 4.5 V to 6 V | 4.5 V to 6 V |
| Packaging Format | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel | Tube |
أبرز الفروقات
- Higher program memory than PIC17C42A (مقابلPIC17C42AT-33E/PQ)
- Industrial temperature grade available (مقابلPIC17C43T-33/L)
- Tape and reel packaging for automated assembly (مقابلPIC17C43-33I/L)
ملاحظات التصميم
OTP memory is one-time-programmable - the firmware cannot be erased or rewritten in-circuit. Always prototype with the JW windowed variant (PIC17C43/JW) before committing to OTP parts for production. Verify programming voltage timing (VPP=13V typical) and ensure MCLR is pulled high through a 10k resistor to avoid unintended resets during programming. Estimated: programming pulses are typically 1ms per word.
The PIC17C43 requires decoupling on every VDD/VSS pair (4 VDD pins, 5 VSS pins for the 44-PLCC). Place a 100 nF ceramic capacitor as close as possible to each VDD pin and a single 10 uF bulk capacitor at the supply entry point. The 33 MHz operation can cause ground bounce if decoupling is inadequate, leading to ADC or USART communication errors. Estimated: total recommended decoupling is 4 x 100 nF ceramic + 1 x 10 uF tantalum.
Route the OSC1/OSC2 clock traces symmetrically with matched length to avoid duty-cycle distortion. Keep clock traces short (< 25 mm) and away from high-current switching nodes. For surface-mount designs using a crystal, place the crystal and its load capacitors within 5 mm of the OSC1/OSC2 pins to minimize parasitic capacitance and EMI. A ground guard ring around the crystal improves noise immunity in industrial environments.
معلومات الامتثال
RoHS compliant per Microchip product page; not AEC-Q100 qualified (industrial grade only); lead-free packaging confirmed; halogen-free status not explicitly stated in provided data.
