PIC17LC766-08I/PT - 8-Bit 8MHz 32KB OTP MCU | Microchip
MPN: PIC17LC766-08I/PT ✗ انتهى عمره الإنتاجيPIC17LC766-08I/PT نظرة عامة
An 8-bit microcontroller (MCU) is a programmable processor that uses an internal 8-bit data bus and combines a CPU, non-volatile program memory, RAM, and peripherals on a single die. Within the broader taxonomy, the PIC17C766 sits in the high-performance tier of Microchip's 8-bit PIC family, above the mid-range PIC16 line and below the enhanced PIC18 line; the full hierarchy is 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. Its RISC architecture, hardware multiply and 33 MHz clock-input capability make it one of the most capable 8-bit controllers Microchip has shipped, optimized for control loops and real-time processing.
Key features include 10-bit A/D conversion channels for mixed-signal sensing, multiple counter/timer peripherals, a hardware USART, PWM modules, and on-chip EEPROM emulation through the OTP array. The "LC" suffix designates the low-voltage CMOS variant, allowing operation down to 2.5 V for battery-powered designs. The industrial ("I") temperature grade supports -40C to +85C operation.
Typical applications include industrial automation and motor control, robotics, HVAC controllers, automotive body and chassis subsystems (where automotive-grade parts are not required), and embedded data-acquisition front ends. The wide digital I/O count (66 pins) and large memory make the device well suited to complex state-machine-driven control panels and user-interface controllers that exceed the capability of mid-range 8-bit MCUs.
When designing with this device, note that the OTP memory variant cannot be reprogrammed in-circuit; a windowed CERDIP version exists for prototyping. The Microchip datasheet recommends PIC18F8520 as the newer migration path for new designs that need flash memory and faster execution. Ensure the trace impedance and decoupling layout follow Microchip's reference design for 8-bit PIC controllers running above 4 MHz.
بدائل مباشرة لـ PIC17LC766-08I/PT — 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 PIC17LC766-08I/PT (نفس عامل الشكل والبصمة) — يختلف في Package, Core Architecture, I/O Pins, Operating Temperature, Data Bus Width.
PIC17LC766T-08I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC17C766-16I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC17C766T-33I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC17C766T-16E/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC17C766-16E/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC17LC766-08I/PT الحدود القصوى والخصائص الكهربائية
| Core Architecture | PIC 8-bit RISC |
| Program Memory Size | 32 KB (16K x 16) OTP EPROM |
| RAM Size | 902 bytes |
| أقصى تردد للساعة | 33 MHz input / 8 MHz instruction |
| Instruction Cycle Time | 121 ns (single cycle) |
| Supply Voltage Range | 2.5 V to 5.5 V |
| Number of I/O Pins | 66 |
| A/D Converter | 10-bit on-chip |
| عرض ناقل البيانات | 16-bit (program) / 8-bit (data) |
| Instruction Set | 58 single-word instructions |
| On-chip Multiplier | 8 x 8 single-cycle hardware |
| درجة حرارة التشغيل | -40C to +85C (Industrial grade) |
| العلبة | 80-pin TQFP (PT), 12x12 mm |
| نوع التركيب | Surface Mount |
| Lead-Free / RoHS | Compliant per DigiKey listing |
تكوين أطراف PIC17LC766-08I/PT
| دبوس 1 | OSC1 — Crystal oscillator input |
| دبوس 2 | OSC2 — Crystal oscillator output |
| دبوس 3 | MCLR — Master clear reset input |
| دبوس 4 | RA0 — PORTA I/O bit 0 |
| دبوس 5 | RA1 — PORTA I/O bit 1 |
| دبوس 6 | RA2 — PORTA I/O bit 2 |
| دبوس 7 | RA3 — PORTA I/O bit 3 |
| دبوس 8 | RA4 — PORTA I/O bit 4 |
| دبوس 9 | RA5 — PORTA I/O bit 5 |
| دبوس 10 | RA6 — PORTA I/O bit 6 |
| دبوس 11 | RA7 — PORTA I/O bit 7 |
| دبوس 12 | VSS — Ground |
| دبوس 13 | VDD — Positive supply |
| دبوس 14 | RB0 — PORTB I/O bit 0 (external interrupt) |
| دبوس 15 | RB1 — PORTB I/O bit 1 |
| دبوس 16 | RB2 — PORTB I/O bit 2 |
| دبوس 17 | RB3 — PORTB I/O bit 3 |
| دبوس 18 | RB4 — PORTB I/O bit 4 |
| دبوس 19 | RB5 — PORTB I/O bit 5 |
| دبوس 20 | RB6 — PORTB I/O bit 6 |
| دبوس 21 | RB7 — PORTB I/O bit 7 |
| دبوس 22 | RC0 — PORTC I/O bit 0 |
| دبوس 23 | RC1 — PORTC I/O bit 1 |
| دبوس 24 | RC2 — PORTC I/O bit 2 |
| دبوس 25 | RC3 — PORTC I/O bit 3 |
| دبوس 26 | RC4 — PORTC I/O bit 4 |
| دبوس 27 | RC5 — PORTC I/O bit 5 |
| دبوس 28 | RC6 — PORTC I/O bit 6 / TX |
| دبوس 29 | RC7 — PORTC I/O bit 7 / RX |
| دبوس 30 | VSS — Ground |
| دبوس 31 | VDD — Positive supply |
| دبوس 32 | RD0 — PORTD I/O bit 0 |
| دبوس 33 | RD1 — PORTD I/O bit 1 |
| دبوس 34 | RD2 — PORTD I/O bit 2 |
| دبوس 35 | RD3 — PORTD I/O bit 3 |
| دبوس 36 | RD4 — PORTD I/O bit 4 |
| دبوس 37 | RD5 — PORTD I/O bit 5 |
| دبوس 38 | RD6 — PORTD I/O bit 6 |
| دبوس 39 | RD7 — PORTD I/O bit 7 |
| دبوس 40 | RE0 — PORTE I/O bit 0 |
| دبوس 41 | RE1 — PORTE I/O bit 1 |
| دبوس 42 | RE2 — PORTE I/O bit 2 |
| دبوس 43 | RE3 — PORTE I/O bit 3 |
| دبوس 44 | RE4 — PORTE I/O bit 4 |
| دبوس 45 | RE5 — PORTE I/O bit 5 |
| دبوس 46 | RE6 — PORTE I/O bit 6 |
| دبوس 47 | RE7 — PORTE I/O bit 7 |
| دبوس 48 | VSS — Ground |
| دبوس 49 | VDD — Positive supply |
| دبوس 50 | RF0 — PORTF I/O bit 0 / AN0 |
| دبوس 51 | RF1 — PORTF I/O bit 1 / AN1 |
| دبوس 52 | RF2 — PORTF I/O bit 2 / AN2 |
| دبوس 53 | RF3 — PORTF I/O bit 3 / AN3 |
| دبوس 54 | RF4 — PORTF I/O bit 4 / AN4 |
| دبوس 55 | RF5 — PORTF I/O bit 5 / AN5 |
| دبوس 56 | RF6 — PORTF I/O bit 6 / AN6 |
| دبوس 57 | RF7 — PORTF I/O bit 7 / AN7 |
| دبوس 58 | RG0 — PORTG I/O bit 0 |
| دبوس 59 | RG1 — PORTG I/O bit 1 |
| دبوس 60 | RG2 — PORTG I/O bit 2 |
| دبوس 61 | RG3 — PORTG I/O bit 3 |
| دبوس 62 | RG4 — PORTG I/O bit 4 |
| دبوس 63 | AVSS — Analog ground |
| دبوس 64 | AVDD — Analog positive supply |
| دبوس 65 | RH0 — PORTH I/O bit 0 |
| دبوس 66 | RH1 — PORTH I/O bit 1 |
| دبوس 67 | RH2 — PORTH I/O bit 2 |
| دبوس 68 | RH3 — PORTH I/O bit 3 |
| دبوس 69 | RH4 — PORTH I/O bit 4 |
| دبوس 70 | RH5 — PORTH I/O bit 5 |
| دبوس 71 | RH6 — PORTH I/O bit 6 |
| دبوس 72 | RH7 — PORTH I/O bit 7 |
| دبوس 73 | VSS — Ground |
| دبوس 74 | VDD — Positive supply |
| دبوس 75 | RJ0 — PORTJ I/O bit 0 |
| دبوس 76 | RJ1 — PORTJ I/O bit 1 |
| دبوس 77 | RJ2 — PORTJ I/O bit 2 |
| دبوس 78 | RJ3 — PORTJ I/O bit 3 |
| دبوس 79 | RJ4 — PORTJ I/O bit 4 |
| دبوس 80 | RJ5 — PORTJ I/O bit 5 |
التطبيقات النموذجية
PIC17LC766-08I/PT مناسب لـ 6 التطبيقs: Industrial Automation Controllers, Motor Control and Robotics, HVAC and Building Control, Embedded Data Acquisition Front End, User Interface and Display Controllers, Legacy Automotive Body and Chassis Modules.
Industrial Automation Controllers
The PIC17LC766-08I/PT's 66 I/O pins and 32KB OTP program memory suit it to industrial automation controllers that must drive many relays, read multiple sensors, and run a real-time control loop. Its 10-bit ADC reads analog process variables such as temperature, pressure, and flow directly. Operating from 2.5 V to 5.5 V lets it interface with both 3.3 V sensors and 5 V actuator drivers; the 121 ns single-cycle instruction supports deterministic PID loops at kilohertz rates. The industrial -40C to +85C grade covers factory-floor environments. Designers should add external watchdog supervisor ICs and follow Microchip's reference layout for noisy industrial settings.
موصى به
Motor Control and Robotics
The PIC17LC766-08I/PT drives stepper and brushed DC motors through its PWM modules and high I/O count, while the on-chip 8x8 hardware multiplier accelerates vector math for robotics kinematics. With 33 MHz clock input and 121 ns instruction cycle, the MCU can generate PWM at audio-bandwidth rates for smooth torque control. The 902 bytes of RAM is sufficient for small control loops but the OTP memory is best used for fixed motor-control firmware that does not require field updates. Pair the MCU with external H-bridge drivers and current-sense amplifiers; the 10-bit ADC samples motor current for closed-loop control.
موصى به
HVAC and Building Control
The PIC17LC766-08I/PT serves HVAC and building-automation controllers that drive dampers, fans, and read thermistor arrays. The 10-bit ADC and 66 I/O pins handle multiple temperature zones and switch contact closures; the RISC core runs scheduling algorithms in real time. Its 2.5 V minimum supply enables battery-backed thermostat designs. Industrial temperature grade meets building controller specifications. Migration note: PIC18F8520 is recommended for new designs because of flash memory and lower power modes.
موصى به
Embedded Data Acquisition Front End
The PIC17LC766-08I/PT functions as a data-acquisition front end that scans analog sensors through its 10-bit ADC and forwards packets via the on-chip USART. The 32KB OTP program memory stores calibration tables and protocol stacks; the 902 bytes of RAM buffers incoming samples between transmit events. Low-voltage operation (2.5 V) supports portable instrumentation. Engineers should add external precision references and consider 16-bit ADC companions when higher accuracy is required.
موصى به
User Interface and Display Controllers
The PIC17LC766-08I/PT's high I/O count lets it drive character LCD panels, keypads, and LED indicator arrays in industrial user-interface modules. The 121 ns instruction cycle is fast enough for screen-refresh loops and key debounce algorithms. Industrial temperature grade covers kiosk and panel-mount environments. Designers migrating to a flash-based MCU should consider PIC18F8520 to enable field firmware updates.
موصى به
Legacy Automotive Body and Chassis Modules
The PIC17LC766-08I/PT can drive non-safety automotive body modules such as seat controllers, mirror adjusters, and lighting controllers where AEC-Q100 qualification is not required. The 66 I/O lines interface with switch panels and small motor drivers; the 10-bit ADC reads potentiometer positions for analog controls. Industrial temperature grade covers most cabin environments but is not qualified for under-hood applications. For AEC-Q100 qualified designs, designers should select a different Microchip automotive part.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC17LC766-08I/PT — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PIC17LC766T-08I/PT | PIC17C766-16I/PT | PIC17C766T-33I/PT | PIC17C766T-16E/PT | PIC17C766-16E/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-80 (12x12 mm) | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same |
| Program Memory | 32 KB OTP EPROM | 32 KB OTP EPROM | 32 KB OTP EPROM | 32 KB OTP EPROM | 32 KB OTP EPROM | 32 KB OTP EPROM |
| Maximum Clock Input | 33 MHz (8 MHz instruction rate) | 33 MHz (8 MHz instruction) | 33 MHz (16 MHz instruction) | 33 MHz (33 MHz instruction) | 33 MHz (16 MHz instruction) | 33 MHz (16 MHz instruction) |
| Minimum Supply Voltage | 2.5 V | 2.5 V | 4.5 V | 4.5 V | 4.5 V | 4.5 V |
| Temperature Range | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +125C (Extended) |
| RAM | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 902 bytes |
| I/O Pins | 66 | 66 | 66 | 66 | 66 | 66 |
| Lifecycle | Obsolete (last-time-buy) | Obsolete (last-time-buy) | Obsolete (last-time-buy) | Obsolete (last-time-buy) | Obsolete (last-time-buy) | Obsolete (last-time-buy) |
أبرز الفروقات
- Low-voltage 2.5 V VDD minimum in a PIC17C76x pin-compatible footprint (مقابلPIC17C766-16I/PT)
- 66 I/O pins and 32KB OTP in a single 80-pin TQFP (مقابلPIC16LF877A-I/PT)
- Hardware 8x8 single-cycle multiplier (مقابلPIC18F8520)
ملاحظات التصميم
Estimated: at VDD=5 V, 8 MHz instruction rate, and 66 I/O lines toggling simultaneously at 100 kHz, the PIC17LC766-08I/PT draws roughly 50-70 mA. Decouple each VDD/VSS pair with a 100 nF ceramic capacitor placed within 5 mm of the pin; add a bulk 10 uF tantalum near the supply entry. The 2.5 V minimum VDD enables battery-backed designs but verify that any 5 V peripherals are tolerant or level-shifted.
The 80-pin TQFP (12x12 mm, 0.5 mm pitch) demands a 4-layer PCB with continuous ground plane beneath the package. Route the 33 MHz oscillator traces symmetrically with short lengths and a guard ring tied to ground. Separate analog AVSS/AVDD from digital VSS/VDD with a single-point connection (star ground) to avoid ADC noise injection. Follow Microchip's PIC17C76x reference schematic for capacitor placement and decoupling topology.
Do not assume PIC17C76x code written for the 8 MHz "LC" speed grade runs unchanged on a 16 MHz or 33 MHz PIC17C76x variant; instruction-cycle timing changes. The OTP memory cannot be reprogrammed, so design code carefully and use a windowed CERDIP for prototyping. The 902-byte RAM is small; use bank-switching carefully to avoid corruption. The PIC18F8520 is the recommended migration path for new designs.
معلومات الامتثال
RoHS and lead-free per DigiKey listing. Not AEC-Q100 qualified - the part is industrial grade (-40C to +85C), not automotive grade. Microchip recommends PIC18F8520 for new designs.