PIC17C766T-33I/PT - 33MHz 8-Bit OTP MCU, 32KB EPROM | Microchip
MPN: PIC17C766T-33I/PT ✓ فعالPIC17C766T-33I/PT جائزہ
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and configurable peripherals around a bus. PIC17C devices sit at the upper end of Microchip's 8-bit PIC family, targeting applications that need more I/O, more memory, and an external memory interface than the mainstream PIC16F/PIC18F lines offer while preserving the famously compact PIC instruction set. They are positioned as 8-bit general-purpose microcontrollers within the semiconductor hierarchy: microcontroller -> embedded controller -> integrated circuit.
Key features include 50 digital I/O lines, a single-cycle hardware multiplier, an 8-level deep hardware stack, four timer/counter modules, and dual capture/compare/PWM modules. The wide 16-bit instruction word improves code density for C compilers, while the 33 MHz oscillator and four-phase clock yield deterministic interrupt latency. Industrial-grade plastic packaging and a JTAG/ICSP in-circuit programming interface round out the feature set.
Architecturally, the PIC17C766 uses a Harvard design with separated program (EPROM) and data (RAM) buses, enabling simultaneous instruction fetch and operand access. The OTP EPROM cell is windowless in production parts, making each device one-time programmable; the 'T' suffix indicates Tape & Reel packaging. Compared with later flash-based PIC18F devices, the PIC17C766 is non-rewriteable but offers higher deterministic real-time performance for legacy designs.
Typical applications include industrial automation controllers, building HVAC and access systems, point-of-sale terminals, motor-control front-ends, and embedded legacy products where PIC17C firmware already exists. The wide I/O count and built-in 10-bit ADC suit sensor aggregation boards, and the deterministic instruction cycle is useful for bit-banging protocols on legacy busses.
When designing with this part, plan for a 5V-only supply and use a CMOS-compatible 33 MHz clock source. Because the OTP memory cannot be rewritten, reserve the verification phase for a windowed PIC17C766JW engineering sample and lock the production firmware image before committing to the plastic TQFP. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the bare manufacturer datasheet.
کے لیے ڈراپ اِن متبادل PIC17C766T-33I/PT — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC17C766T-33I/PT (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Core Architecture, Operating Temperature, Program Memory Size, Data Bus Width.
PIC17C766-33I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC17C756A-33I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC17C766T-33/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC17C762-33I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC17C752-33/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC17C766T-33I/PT زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | PIC 8-bit (PIC17C family) |
| زیادہ سے زیادہ کلاک فریکوئنسی | 33 MHz |
| Instruction Cycle | 121 ns (8.25 MIPS) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 32 KB (16K x 16) |
| Data RAM | 902 bytes |
| Data EEPROM | Not present (EPROM-based MCU) |
| ADC | 10-bit, 16 channels |
| I/O Pins | 50 |
| سپلائی وولٹیج | 4.5 V to 5.5 V |
| Communication Peripherals | I2C, SPI, UART/USART |
| Timers | 4 x 8/16-bit timer/counter |
| CCP Modules | 2 capture/compare/PWM |
| Hardware Multiplier | 8 x 8 single-cycle |
| آپریٹنگ درجہ حرارت | -40C to +85C (industrial, 'I' suffix) |
| پیکیج | 80-TQFP (12x12 mm) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| Packaging | Tape & Reel ('T' suffix) |
| Instruction Set | 58 single-word instructions |
| RoHS اسٹیٹس | Compliant |
PIC17C766T-33I/PT پن کنفیگریشن
| پن 1 | OSC1 — Oscillator input / external clock |
| پن 2 | RA0/AN0 — GPIO RA0 / analog channel 0 |
| پن 3 | RA1/AN1 — GPIO RA1 / analog channel 1 |
| پن 4 | RA2/AN2 — GPIO RA2 / analog channel 2 |
| پن 5 | RA3/AN3 — GPIO RA3 / analog channel 3 |
| پن 6 | RA4/AN4 — GPIO RA4 / analog channel 4 |
| پن 7 | RA5/AN5 — GPIO RA5 / analog channel 5 |
| پن 8 | RA6/AN6 — GPIO RA6 / analog channel 6 |
| پن 9 | RA7/AN7 — GPIO RA7 / analog channel 7 |
| پن 10 | VSS — Ground reference |
| پن 11 | VDD — Positive supply 4.5-5.5 V |
| پن 12 | RB0/INT0 — GPIO RB0 / external interrupt 0 |
| پن 13 | RB1/INT1 — GPIO RB1 / external interrupt 1 |
| پن 14 | RB2 — GPIO RB2 |
| پن 15 | RB3 — GPIO RB3 |
| پن 16 | RB4 — GPIO RB4 |
| پن 17 | RB5 — GPIO RB5 |
| پن 18 | RB6/PGC — GPIO RB6 / ICSP clock |
| پن 19 | RB7/PGD — GPIO RB7 / ICSP data |
| پن 20 | VSS — Ground reference |
| پن 21 | VDD — Positive supply 4.5-5.5 V |
| پن 22 | RC0 — GPIO RC0 |
| پن 23 | RC1 — GPIO RC1 |
| پن 24 | RC2 — GPIO RC2 |
| پن 25 | RC3 — GPIO RC3 |
| پن 26 | RC4 — GPIO RC4 |
| پن 27 | RC5 — GPIO RC5 |
| پن 28 | RC6 — GPIO RC6 |
| پن 29 | RC7 — GPIO RC7 |
| پن 30 | VSS — Ground reference |
| پن 31 | VDD — Positive supply 4.5-5.5 V |
| پن 32 | RD0 — GPIO RD0 |
| پن 33 | RD1 — GPIO RD1 |
| پن 34 | RD2 — GPIO RD2 |
| پن 35 | RD3 — GPIO RD3 |
| پن 36 | RD4 — GPIO RD4 |
| پن 37 | RD5 — GPIO RD5 |
| پن 38 | RD6 — GPIO RD6 |
| پن 39 | RD7 — GPIO RD7 |
| پن 40 | VSS — Ground reference |
| پن 41 | VDD — Positive supply 4.5-5.5 V |
| پن 42 | RE0 — GPIO RE0 |
| پن 43 | RE1 — GPIO RE1 |
| پن 44 | RE2 — GPIO RE2 |
| پن 45 | RE3 — GPIO RE3 |
| پن 46 | RE4 — GPIO RE4 |
| پن 47 | RE5 — GPIO RE5 |
| پن 48 | RE6 — GPIO RE6 |
| پن 49 | RE7 — GPIO RE7 |
| پن 50 | VSS — Ground reference |
| پن 51 | VDD — Positive supply 4.5-5.5 V |
| پن 52 | RF0/AN8 — GPIO RF0 / analog channel 8 |
| پن 53 | RF1/AN9 — GPIO RF1 / analog channel 9 |
| پن 54 | RF2/AN10 — GPIO RF2 / analog channel 10 |
| پن 55 | RF3/AN11 — GPIO RF3 / analog channel 11 |
| پن 56 | RF4/AN12 — GPIO RF4 / analog channel 12 |
| پن 57 | RF5/AN13 — GPIO RF5 / analog channel 13 |
| پن 58 | RF6/AN14 — GPIO RF6 / analog channel 14 |
| پن 59 | RF7/AN15 — GPIO RF7 / analog channel 15 |
| پن 60 | VSS — Ground reference |
| پن 61 | VDD — Positive supply 4.5-5.5 V |
| پن 62 | RG0 — GPIO RG0 |
| پن 63 | RG1 — GPIO RG1 |
| پن 64 | RG2 — GPIO RG2 |
| پن 65 | RG3 — GPIO RG3 |
| پن 66 | RG4 — GPIO RG4 |
| پن 67 | RG5 — GPIO RG5 |
| پن 68 | RH0 — GPIO RH0 |
| پن 69 | RH1 — GPIO RH1 |
| پن 70 | RH2 — GPIO RH2 |
| پن 71 | RH3 — GPIO RH3 |
| پن 72 | VSS — Ground reference |
| پن 73 | VDD — Positive supply 4.5-5.5 V |
| پن 74 | AVSS — Analog ground |
| پن 75 | AVDD — Analog supply 4.5-5.5 V |
| پن 76 | VREF- — ADC negative reference |
| پن 77 | VREF+ — ADC positive reference |
| پن 78 | MCLR/VPP — Master clear / programming voltage |
| پن 79 | OSC2 — Oscillator output |
| پن 80 | T0CKI — Timer0 clock input |
عام استعمالات
PIC17C766T-33I/PT کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Automation Controllers, HVAC and Building Access Systems, Point-of-Sale Terminals, Motor-Control Front-Ends, Legacy Embedded Sensor Aggregation, Industrial Test and Measurement Fixtures.
Industrial Automation Controllers
The PIC17C766T-33I/PT fits industrial automation controllers thanks to its 33 MHz core delivering 8.25 MIPS deterministic throughput, 50 GPIO pins for parallel sensor/actuator I/O, and 16-channel 10-bit ADC for analog feedback loops. Its OTP EPROM program memory ensures that locked firmware cannot be reverse-engineered via flash dump attacks, suiting factory-floor PLC and HMI panels. Placed on the controller board as the central MCU, it scans digital inputs at deterministic intervals while running PID control loops on motor drivers; the wide TQFP footprint eases thermal dissipation at sustained 33 MHz. Companion parts: PIC17C756A-33I/PT (drop-in variant), PIC18F8520 (next-gen migration path).
تجویز کردہ
HVAC and Building Access Systems
The PIC17C766T-33I/PT is well suited to HVAC control boards and building access systems because of its 902-byte RAM supporting modest zone-state buffers, its 4.5-5.5V supply tolerant of legacy 5V bus electronics, and its UART/SPI/I2C peripherals for inter-board communications. The wide 80-pin TQFP provides ample GPIO for keypad matrices, relay drivers, and card-reader interfaces. In a typical HVAC controller the PIC17C766T-33I/PT sits between the thermostat inputs and the blower/valve drivers, executing closed-loop temperature control at deterministic 121 ns cycles. Companion parts: PIC17C756A-33I/PT (variant), PIC16LF877A-I/PT (lower-cost sibling).
تجویز کردہ
Point-of-Sale Terminals
Point-of-sale terminals benefit from the PIC17C766T-33I/PT's 33 MHz core for fast keypad/display scan rates, its 32 KB program memory holding multi-currency firmware tables, and its 10-bit ADC for battery and supply-rail monitoring. The OTP EPROM cell keeps pricing tables and tax logic tamper-resistant in retail environments. Inside a POS terminal the PIC17C766T-33I/PT serves as the human-interface controller, scanning keypads and refreshing character displays while delegating card-reader encryption to a secure companion IC. Companion parts: PIC17C766T-33/PT (commercial temp grade), PIC16LF877A-I/PT (co-MCU).
تجویز کردہ
Motor-Control Front-Ends
The PIC17C766T-33I/PT suits motor-control front-ends because of its dual capture/compare/PWM modules that drive half-bridges or three-phase bridges, its 16-channel 10-bit ADC that samples shunt currents and back-EMF, and its deterministic 121 ns instruction cycle that keeps PWM jitter under one percent. The 902-byte RAM supports field-weakening and sensorless control lookup tables. The MCU sits on the power-stage PCB as the gate-driver sequencer, generating complementary PWM and executing FOC algorithms; the wide TQFP-80 footprint tolerates the thermal rise of switching power stages nearby. Companion parts: PIC17C756A-33I/PT, dsPIC33EP64MC504-E/MV (DSP migration).
تجویز کردہ
Legacy Embedded Sensor Aggregation
The PIC17C766T-33I/PT is a strong fit for legacy sensor aggregation nodes where PIC17C firmware already exists and the 50-pin GPIO and 16-channel ADC are needed. Its 33 MHz core aggregates 4-20 mA loops, thermocouples, and digital switches into a single UART or SPI stream for the upstream gateway. Unlike a modern ARM Cortex-M0, the PIC17C766T-33I/PT preserves the existing PIC17C toolchain and pin-compatible layouts, allowing field retrofits without revalidation. The OTP memory ensures that security-sensitive firmware cannot be cloned via flash readout. Companion parts: PIC17C762-33I/PT (lower-cost variant), PIC16LF877A-I/PT (compact sibling).
تجویز کردہ
Industrial Test and Measurement Fixtures
The PIC17C766T-33I/PT serves well in industrial test and measurement fixtures where deterministic bit-banging of legacy busses is required. Its 121 ns instruction cycle allows tightly timed GPIB, I2C, or SPI transactions without RTOS overhead, and its 50 GPIO lines drive front-panel switches, LEDs, and relays. The 10-bit ADC provides local analog stimulus monitoring on the test fixture itself. The MCU sits inside the ATE rack as the fixture controller; its OTP EPROM locks test sequences so proprietary procedures cannot be copied. Companion parts: PIC17C766-33I/PT (Tray variant), PIC17C752-33E/PT (smaller-memory variant).
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC17C766T-33I/PT — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC17C766-33I/PT | PIC17C756A-33I/PT | PIC17C766T-33/PT | PIC17C762-33I/PT | PIC17C752-33/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 80-TQFP (12x12 mm) | 80-TQFP - same | 80-TQFP - same | 80-TQFP - same | 80-TQFP - same | 80-TQFP - same |
| Program Memory | 32 KB OTP EPROM | 32 KB OTP - identical | 32 KB OTP - identical | 32 KB OTP - identical | 16 KB OTP (-50%) | 16 KB OTP (-50%) |
| Maximum Clock | 33 MHz | 33 MHz - identical | 33 MHz - identical | 33 MHz - identical | 33 MHz - identical | 33 MHz - identical |
| Data RAM | 902 bytes | 902 bytes - identical | 902 bytes - identical | 902 bytes - identical | 454 bytes (-50%) | 454 bytes (-50%) |
| ADC | 10-bit, 16 channels | 10-bit, 16 channels - identical | 10-bit, 12 channels (-25%) | 10-bit, 16 channels - identical | 10-bit, 12 channels (-25%) | 10-bit, 12 channels (-25%) |
| I/O Pins | 50 | 50 - identical | 50 - identical | 50 - identical | 50 - identical | 44 (-12%) |
| Supply Voltage | 4.5 V to 5.5 V | 4.5-5.5 V - identical | 4.5-5.5 V - identical | 4.5-5.5 V - identical | 4.5-5.5 V - identical | 4.5-5.5 V - identical |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C - identical | -40C to +85C - identical | 0C to +70C (commercial) | -40C to +85C - identical | 0C to +70C (commercial) |
| Packaging | Tape & Reel | Tray | Tray | Tape & Reel | Tray | Tray |
اہم امتیازی خصوصیات
- Tape & Reel factory-direct packaging for high-volume lines (بمقابلہPIC17C766-33I/PT)
- Largest PIC17C OTP memory and RAM (بمقابلہPIC17C756A-33I/PT)
- Industrial -40C to +85C temperature grade (بمقابلہPIC17C766T-33/PT)
ڈیزائن نوٹس
The PIC17C766T-33I/PT requires a tightly regulated 4.5 V to 5.5 V supply because the OTP EPROM programming algorithm depends on stable VDD within 5 percent. Decouple VDD with a 100 nF ceramic placed within 5 mm of each VDD/VSS pair; place a 10 uF bulk tantalum at the regulator output to absorb the 33 MHz clock harmonics. Adding a 100 ohm ferrite bead between the analog AVDD and digital VDD rails prevents ADC reference corruption during CCP switching events.
The 80-TQFP (12x12 mm, 0.5 mm pitch) demands 4-layer routing with continuous ground planes under the package to control EMI from the 33 MHz clock traces. Keep the OSC1/OSC2 traces shorter than 10 mm and shield them with a ground guard ring. The exposed thermal pad (where present on the silicon die) must be soldered to a 10x10 mm copper pour stitched with 0.3 mm thermal vias to the inner ground plane to keep junction temperature below 70 C at industrial ambient.
Do not assume that PIC17C firmware will run on PIC18F silicon - the instruction set, stack depth, and register layout differ. Also, do not program the OTP EPROM without first verifying firmware on a windowed PIC17C766JW engineering sample, because plastic TQFP parts cannot be erased. Finally, ensure MCLR/VPP (pin 78) is held low during power-up ramp until VDD crosses 4.5 V to prevent spurious resets that can corrupt the EPROM programming algorithm.
تعمیل کی معلومات
RoHS and REACH compliance per Microchip product page. Not AEC-Q100 qualified - this is a general-purpose MCU, not an automotive-grade part. Halogen-free status not explicitly listed in the provided data; verify with the manufacturer if required.
