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
What are the key features of PIC12C509A-04/SN?
- 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
What is PIC12C509A-04/SN used for?
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.
What are the specifications of PIC12C509A-04/SN?
| 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 |
Where can I find the PIC12C509A-04/SN datasheet?
PIC12C509A-04/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for PIC12C509A-04/SN?
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.
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| 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 |
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