PIC17C756A-33/L Microchip Integrated Circuit (Plastic Leaded Chip Carrier) In Stock
The PIC17C756A-33/L is an 8-bit PIC17 OTP microcontroller from Microchip running at 33 MHz with 32 KB of one-time programmable program memory and an integrated ADC in a 68-pin PLCC package. It features a 16-bit address bus and rich peripheral set for demanding embedded control applications. Suitable for legacy industrial, motor control, and automation system maintenance builds.
- Manufacturer
- Microchip
- Package
- Plastic Leaded Chip Carrier
- Pin Count
- 68
- Lifecycle
- ACTIVE
- Datasheet
- PIC17C756A-33/L Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.7100(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 33 MHz clock with high-performance 8-bit PIC17 RISC core for responsive real-time control
- 32 KB (16K x 16) one-time programmable OTP program memory for production-locked firmware
- 16-bit address bus enabling access to large external memory spaces
- Integrated multi-channel ADC for direct analog sensor acquisition
- 68-pin PLCC package providing abundant I/O lines for complex control interfaces
- Single 5V supply operation simplifying power architecture in industrial systems
Applications
The PIC17C756A-33/L is suited for legacy industrial motor controllers, embedded automation PLCs, and measurement instruments that were originally designed around the high-performance PIC17 architecture running at 33 MHz. Its 32 KB OTP memory stores production-proven firmware that cannot be accidentally overwritten in the field, making it appropriate for certified safety equipment requiring firmware immutability. System integrators maintaining aging industrial installations use the 68-pin PLCC package for direct board-level replacement of original units.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | PLCC-68 |
| Factory Lead Time | 7Weeks |
| Date Of Intro | 1997-01-14 |
| YTEOL | 3 |
| Has ADC | YES |
| Address Bus Width | 16 |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC17 |
| Clock Frequency-Max | 33MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| External Data Bus Width | 8 |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | S-PQCC-J68 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 18 |
| Number of I/O Lines | 50 |
| Number of Serial I/Os | 1 |
| Number of Timers | 4 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 16 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LDCC68,1.0SQ |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER |
| Peak Reflow Temperature (Cel) | 245 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 902 |
| ROM (words) | 16384 |
| ROM Programmability | OTPROM |
| Screening Level | TS 16949 |
| Speed | 33MHz |
| Supply Current-Max | 30mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 4.5V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | J BEND |
| Terminal Pitch | 1.27mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Plastic Leaded Chip Carrier |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | 3A991.a.2 |
| HTS Code | 8542.31.00.15 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC17C756A-33/L:
RISC Microcontroller, 8-Bit, OTPROM, PIC17 CPU, 33MHz, CMOS, PQCC68
Frequently Asked Questions
What is the maximum clock speed of the PIC17C756A-33/L and how many instructions per second does that deliver?
The PIC17C756A-33/L operates at a maximum clock frequency of 33 MHz. Since the PIC17 architecture executes most instructions in 4 clock cycles, this yields approximately 8.25 MIPS throughput, which was competitive for 8-bit controllers in the late 1990s and remains capable for maintaining legacy industrial control loops with sub-microsecond response to sensor events.
Why would a design use the OTP program memory of the PIC17C756A-33/L rather than a Flash-based microcontroller?
OTP memory in the PIC17C756A-33/L is programmed once and cannot be erased, providing absolute firmware immutability once deployed. This suits safety-certified industrial equipment and medical devices where post-production firmware modification is prohibited by regulatory requirements. Production costs for OTP devices are also lower than windowed EPROM variants, making the 32 KB OTP attractive for high-volume runs of fixed-function controllers.
How does the 68-pin PLCC footprint of the PIC17C756A-33/L affect board-level replacement for legacy system maintenance?
The 68-pin PLCC package of the PIC17C756A-33/L sits in a through-hole-compatible socket, allowing the IC to be extracted and re-inserted without soldering, which simplifies field replacement of failed units in aging automation panels. The 24.23 mm x 24.23 mm package footprint is standardised, so replacement parts from multiple production lots fit the same PCB socket land pattern without layout modifications.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $4.7100 | $4.71 |
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