PIC17C44-33I/L Microchip Integrated Circuit (Plastic Leaded Chip Carrier) In Stock
Microchip PIC17C44-33I/L is a high-performance 8-bit CISC OTP microcontroller running up to 33 MHz, featuring a 16-bit address bus, 33-instruction set, and 44-pin PLCC package for industrial embedded control applications.
- Manufacturer
- Microchip
- Package
- Plastic Leaded Chip Carrier
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Datasheet
- PIC17C44-33I/L Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.2670(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- High-speed 8-bit CISC core executing up to 33 MHz with single-cycle instruction execution for deterministic real-time control tasks
- 16-bit address bus supports large program memory addressing beyond standard 8-bit MCU limits, enabling complex control algorithms
- 44-pin PLCC package provides 33 I/O pins with socket-mountable form factor for field upgrades and legacy industrial board compatibility
- OTP (One-Time Programmable) ROM for cost-effective high-volume production requiring fixed code without reprogramming overhead
Applications
The PIC17C44-33I/L targets legacy industrial control systems, motor drives, and process automation equipment designed in the early-to-mid 1990s where its 33 MHz clock speed and 44-pin PLCC socket compatibility remain the key hardware constraints. It is also used in aftermarket replacement and repair scenarios for existing equipment where PIC17C44-compatible OTP code is available and PLCC-44 socket infrastructure is already in place.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | PLCC-44 |
| Date Of Intro | 1992-10-01 |
| YTEOL | 3 |
| Has ADC | NO |
| 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 | 16 |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | S-PQCC-J44 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 2 |
| Number of I/O Lines | 33 |
| Number of Serial I/Os | 1 |
| Number of Timers | 6 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 16 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LDCC44,.7SQ |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER |
| Qualification Status | Not Qualified |
| RAM (bytes) | 454 |
| ROM (words) | 8192 |
| ROM Programmability | OTPROM |
| Speed | 33MHz |
| Supply Current-Max | 38mA |
| Supply Voltage-Max | 6V |
| Supply Voltage-Min | 5V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | J BEND |
| Terminal Pitch | 1.27mm |
| Terminal Position | QUAD |
| 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 | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC17C44-33I/L:
RISC Microcontroller, 8-Bit, OTPROM, PIC CPU, 33MHz, CMOS, PQCC44
RISC Microcontroller, 8-Bit, OTPROM, PIC17 CPU, 33MHz, CMOS, PQCC44
Frequently Asked Questions
What clock frequency does PIC17C44-33I/L support and how does it affect instruction throughput?
PIC17C44-33I/L operates at a maximum clock frequency of 33 MHz, delivering an instruction execution rate of approximately 8.25 million instructions per second since most instructions execute in 4 clock cycles. This throughput is sufficient for real-time motor control loops, serial communication handling, and state machine processing in legacy industrial embedded designs.
Is PIC17C44-33I/L suitable for new product designs in 2024 or only for legacy system repairs?
Due to its OTP (One-Time Programmable) architecture and legacy PIC17 core introduced in 1992, PIC17C44-33I/L is suited primarily for maintaining or repairing existing equipment rather than new product development. Modern designs benefit from Flash-based microcontrollers with more peripherals; however, for exact board-level replacements requiring the 44-pin PLCC package and 33 MHz PIC17 compatibility, it remains the correct choice.
How many I/O pins does PIC17C44-33I/L expose in its 44-pin PLCC package?
PIC17C44-33I/L provides 33 general-purpose I/O pins through its 44-pin PLCC package, with the remaining pins allocated to power, ground, clock, and reset functions. The PLCC-44 socket-mountable form factor allows field replacement without soldering, which is valuable in industrial field maintenance scenarios where component replacement must be performed quickly.
What distinguishes PIC17C44-33I/L from PIC17C44-25I/L and when should the 33 MHz variant be selected?
PIC17C44-33I/L is the faster speed grade, running at 33 MHz versus 25 MHz for the PIC17C44-25I/L, delivering approximately 8.25 MIPS compared to 6.25 MIPS. The 33 MHz variant is preferred when the application requires faster serial bit-banging, higher PWM resolution, or more processing headroom in interrupt-driven control loops, provided the PCB layout supports the higher frequency without signal integrity issues.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.2670 | $3.27 |
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