PIC18C252-I/SO Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip PIC18C252-I/SO is an 8-bit PIC18 microcontroller with 32 KB OTP program memory, 1536 bytes RAM, and 23 I/O pins running at up to 40 MHz. Packaged in a 28-pin SOIC with integrated ADC, it suits cost-sensitive embedded control designs. Available from stock worldwide.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- PIC18C252-I/SO Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $6.3000(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
- 8-bit PIC18 CPU core operating at up to 40 MHz with 32 KB one-time-programmable flash program memory
- 1536 bytes on-chip SRAM and 23 GPIO pins supporting diverse peripheral connectivity
- Integrated ADC enables direct analog signal acquisition without external conversion hardware
- 28-pin SOIC package with 5-week lead time facilitates rapid board prototyping and production
Applications
The PIC18C252-I/SO suits embedded control applications requiring moderate program memory in a compact 28-pin SOIC outline, such as industrial sensors, home automation controllers, and motor-drive boards. Its 40 MHz maximum clock, 23 I/O lines, and onboard ADC make it effective for data-acquisition front ends. Legacy designs already based on the PIC18 architecture can adopt this part to benefit from existing firmware and toolchain investment.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-28 |
| Factory Lead Time | 5Weeks |
| Date Of Intro | 1999-06-17 |
| YTEOL | 3 |
| Has ADC | YES |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC18 |
| Clock Frequency-Max | 40MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | R-PDSO-G28 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 3 |
| Number of I/O Lines | 23 |
| 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 | SOP28,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Qualification Status | Not Qualified |
| RAM (bytes) | 1536 |
| ROM (words) | 16384 |
| ROM Programmability | OTPROM |
| Screening Level | TS 16949 |
| Speed | 40MHz |
| Supply Current-Max | 38mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 4.2V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What program memory and RAM capacity does the PIC18C252-I/SO provide for embedded firmware?
The PIC18C252-I/SO offers 32 KB of one-time-programmable program memory and 1536 bytes of SRAM, giving embedded developers sufficient space for moderately complex firmware with data buffers. Running at up to 40 MHz, the PIC18 core executes most instructions in a single cycle, maximising throughput for real-time control tasks.
How many I/O pins does the PIC18C252-I/SO expose, and what package carries them?
The device provides 23 general-purpose I/O pins housed in a 28-pin SOIC package with 1.27 mm pitch, making it straightforward to hand-solder during prototyping. The 28-pin footprint is widely supported by PCB layout libraries, and the SOIC outline is compatible with standard DIP-to-SOIC adapters for breadboard evaluation at 5 V supply.
For a legacy PIC18 design running at 3.3 V, is PIC18C252-I/SO a suitable drop-in alternative to similar OTP devices?
The PIC18C252-I/SO operates from 4.2 V to 5.5 V, so it is not a direct 3.3 V drop-in; designers targeting 3.3 V rails should evaluate the PIC18F series. For 5 V legacy boards with existing 40 MHz PIC18 firmware, it is a functional OTP replacement that preserves the same 32 KB address space and 23-pin I/O map.
What lead time and ADC availability should procurement teams plan for when ordering PIC18C252-I/SO?
Factory lead time is typically 5 weeks, so procurement teams should maintain a safety stock buffer of at least 6 weeks of demand when running continuous production. The device integrates a multi-channel ADC, removing the need for an external analog-to-digital converter IC and lowering bill-of-materials cost for sensor-based products.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $8.0100 | $8.01 |
| 4+ | $6.3000 | $25.20 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”