PIC12C509A-04/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
PIC12C509A-04/SN is an 8-bit PIC12 family OTP microcontroller from Microchip clocked at up to 4 MHz with 1 Kword OTP program memory and 6 I/O pins. It integrates an 8-level deep hardware stack, an 8-bit timer, and an internal 4 MHz oscillator option in an 8-pin SOIC for ultra-compact embedded control applications.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- PIC12C509A-04/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.2300(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit PIC12 RISC core running at up to 4 MHz delivering single-cycle instruction execution at 1 MIPS for time-critical control tasks
- 1 Kword OTP program memory in a compact 8-pin SOIC enabling one-time programmable firmware for high-volume cost-optimized designs
- Internal 4 MHz RC oscillator option eliminates external crystal and reduces BOM cost and PCB area in simple control applications
- 6 individually configurable I/O pins supporting digital input, output, and weak pull-up functions for button, LED, and sensor interfacing
Applications
The PIC12C509A-04/SN is ideal for simple control tasks such as timer sequencing, LED blink patterns, and power-on reset logic in appliances and consumer electronics where only a few I/O lines are needed. Its compact 8-pin SOIC package and OTP memory keep unit costs minimal in high-volume production runs for remote controls, toys, and charger management circuits. Legacy designs already using the PIC12C5xx family continue to source this part for board-compatible replacement and production continuation.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| Date Of Intro | 1996-05-10 |
| YTEOL | 3 |
| Has ADC | NO |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC12 |
| Clock Frequency-Max | 4MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of I/O Lines | 6 |
| Number of Timers | 2 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 12 |
| PWM Channels | NO |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.23 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 41 |
| ROM (words) | 1024 |
| ROM Programmability | OTPROM |
| Speed | 4MHz |
| Supply Current-Max | 1.4mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 5V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| 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 |
| HTS Code | 8542.31.00.15 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC12C509A-04/SN:
RISC Microcontroller, 8-Bit, OTPROM, PIC12 CPU, 4MHz, CMOS, PDSO8
RISC Microcontroller, 8-Bit, OTPROM, PIC12 CPU, 4MHz, CMOS, PDSO8
RISC Microcontroller, 8-Bit, OTPROM, PIC12 CPU, 4MHz, CMOS, PDSO8
Frequently Asked Questions
What maximum clock frequency does the PIC12C509A-04/SN support and how does it affect instruction throughput?
The PIC12C509A-04/SN runs at a maximum clock of 4 MHz. Because its RISC pipeline executes most instructions in a single 4-clock cycle, the effective throughput is 1 MIPS. This is sufficient for debounce timers, state machine sequencers, and simple protocol bit-banging tasks common in 8-pin microcontroller applications.
What type of program memory does the PIC12C509A-04/SN use and what are the implications for production programming?
The PIC12C509A-04/SN uses 1 Kword of OTP (one-time programmable) memory. Firmware is programmed once during manufacturing using a standard PIC programmer such as MPLAB ICD 3 or a gang programmer, and cannot be erased or re-written. This lowers per-unit memory cost versus Flash-based PICs but requires careful verification before committing to a production run.
How many I/O pins does the PIC12C509A-04/SN expose in its 8-pin SOIC package?
Of the 8 pins, 2 are dedicated to VDD and VSS, leaving 6 configurable I/O pins (GP0–GP5). GP4 and GP5 can serve as oscillator inputs when an external crystal is used, reducing available general I/O to 4 pins in that configuration. All 6 I/O pins support weak internal pull-ups, removing the need for external resistors on input-only signals.
For a high-volume LED controller design, how does the PIC12C509A-04/SN compare to the PIC12F509 as a cost-optimized alternative?
The PIC12C509A-04/SN (OTP) typically carries a lower unit price than the Flash-based PIC12F509 in volume quantities because OTP memory cells are cheaper to fabricate. Both share the same 4 MHz core, 8-pin SOIC pinout, and 6 I/O pins, so a PIC12C509A firmware image can run unmodified on a PIC12F509 during development, then transition to the OTP variant for production once firmware is frozen.
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+ | $1.4800 | $1.48 |
| 100+ | $1.3400 | $134.00 |
| 1000+ | $1.2600 | $1260.00 |
| 5000+ | $1.2300 | $6150.00 |
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.”