PIC12F635-I/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
PIC12F635-I/P is an 8-bit PIC12 microcontroller with 1KB Flash and 64B RAM operating at up to 20 MHz. It features an integrated comparator, internal oscillator, and watchdog timer in an 8-pin PDIP package. Wide supply range from 2V to 5.5V supports both battery and regulated power designs.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- PIC12F635-I/P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.2600(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
- Up to 20 MHz operation in a compact 8-pin PDIP package for easy prototyping and breadboarding
- Integrated comparator and internal oscillator eliminating external crystal components
- 2V to 5.5V supply range enabling battery-powered and regulated 5V logic designs
Applications
The PIC12F635-I/P is well-suited for simple control tasks such as switch debouncing, LED sequencing, and small appliance timing circuits where minimal I/O is required. Its integrated comparator enables direct analog threshold detection without external op amps. The 8-pin PDIP form factor makes it especially popular for hobbyist projects, proof-of-concept prototypes, and low-volume production designs.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | PDIP-8 |
| Factory Lead Time | 8Weeks |
| YTEOL | 8 |
| Has ADC | NO |
| Additional Feature | ALSO OPERATES BY 2V MINIMUM SUPPLY AT 4 MHZ |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC12 |
| Clock Frequency-Max | 20MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | R-PDIP-T8 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 1 |
| Number of I/O Lines | 6 |
| Number of Timers | 5 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 8 |
| PWM Channels | NO |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| RAM (bytes) | 64 |
| ROM (words) | 1792 |
| ROM Programmability | FLASH |
| Screening Level | TS 16949 |
| Speed | 20MHz |
| Supply Current-Max | 3.25mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 4.5V |
| Supply Voltage-Nom | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.31.00.15 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC12F635-I/P:
RISC Microcontroller, 8-Bit, FLASH, PIC12 CPU, 20MHz, CMOS, PDIP8
RISC Microcontroller, 8-Bit, FLASH, PIC CPU, 20MHz, CMOS, PDIP8
RISC Microcontroller, 8-Bit, FLASH, PIC12 CPU, 20MHz, CMOS, PDIP8
RISC Microcontroller, 8-Bit, FLASH, PIC12 CPU, 20MHz, CMOS, PDIP8
RISC Microcontroller, 8-Bit, FLASH, PIC12 CPU, 20MHz, CMOS, PDIP8
RISC Microcontroller, 8-Bit, FLASH, PIC12 CPU, 20MHz, CMOS, PDIP8
8 pin PIC w/CCP/PWM, 10 bit A2D, comparator, midrange core, 2K words flash
Frequently Asked Questions
How does the PIC12F635-I/P integrated comparator enable analog threshold detection without external components?
The built-in comparator accepts analog inputs directly on GPIO pins and triggers an interrupt when the input crosses a programmable reference level, eliminating the need for a discrete op amp or external comparator IC. This saves at least 2 to 4 BOM components in applications such as battery low-voltage detection or temperature-threshold alarms running from a 2V to 5.5V supply.
For a breadboard prototype, why does the 8-pin PDIP package of the PIC12F635-I/P simplify development compared to SMD alternatives?
The 8-pin PDIP with 2.54 mm through-hole pitch fits directly into a standard breadboard without adapters, enabling rapid prototyping with clip leads and jumper wires. Developers can program the device in-circuit via 3 ICSP pins while monitoring outputs on the remaining 5 GPIO pins, reducing prototype iteration time compared to soldering QFN or SOIC packages.
Given the 1KB Flash limit of the PIC12F635-I/P, which coding practices keep firmware within the memory budget?
With only 1024 x 14-bit words of program Flash, developers should use table-driven state machines instead of lengthy if-else chains, inline frequently called routines to avoid subroutine call overhead, and place constant data in Flash using the retlw pattern. Microchip XC8 with -O2 optimization typically compresses simple control code to under 800 instructions, leaving 200 words of margin for calibration data.
How does operating the PIC12F635-I/P at 2V minimum supply affect achievable clock speed and peripheral behavior?
At 2V supply the PIC12F635-I/P runs reliably at up to 4 MHz, limiting throughput to 1 MIPS, compared to 5 MIPS at 5V and 20 MHz. The comparator remains functional across the full 2V to 5.5V range, but ADC-like accuracy is degraded at the lower supply due to increased noise margins; designers should budget 10% to 15% timing slack when operating near the 2V minimum.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.2600 | $1.26 |
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