PIC12LF1840T39A-I/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip PIC12LF1840T39A-I/ST is an 8-bit PIC microcontroller with 4 kword Flash, 32 MHz clock, 256-byte RAM, and integrated RFID transponder interface in a 14-pin TSSOP package. It targets contactless identification and sensing with 2.5 V to 3.6 V operation. From $1.80 in stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- PIC12LF1840T39A-I/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.6400(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of PIC12LF1840T39A-I/ST?
- Integrated T39A RFID transponder module for contactless 125 kHz or 134 kHz identification without an external RFID IC
- 8-bit PIC core at 32 MHz with 4 kword Flash and 256-byte RAM for lightweight sensor and identification firmware
- 2.5 V to 3.6 V operating range in a compact 14-pin TSSOP footprint ideal for battery-powered RFID tag designs
What is PIC12LF1840T39A-I/ST used for?
PIC12LF1840T39A-I/ST is optimized for ISO 11784/11785 compliant animal identification tags and access control tokens that require both MCU processing and RFID communication in a single chip. Its low supply voltage of 2.5 V to 3.6 V and minimal active current extend battery life in coin-cell-powered asset tracking and livestock tagging applications. Designers can also use the device for general-purpose 8-bit sensing tasks where the 14-pin TSSOP footprint minimizes board space.
What are the specifications of PIC12LF1840T39A-I/ST?
| Manufacturer Package Code | TSSOP-14 |
| Factory Lead Time | 12Weeks |
| YTEOL | 13 |
| Bit Size | 8 |
| CPU Family | PIC |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e3 |
| On Chip Program ROM Width | 8 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 256 |
| ROM (words) | 4096 |
| ROM Programmability | FLASH |
| Speed | 32MHz |
| Supply Current-Max | 3.3mA |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.635mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| 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 |
Where can I find the PIC12LF1840T39A-I/ST datasheet?
PIC12LF1840T39A-I/ST Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for PIC12LF1840T39A-I/ST?
Compatible alternatives and drop-in replacements for PIC12LF1840T39A-I/ST:
RISC Microcontroller, 8-Bit, FLASH, PIC CPU, 32MHz, CMOS, PDSO14
RISC Microcontroller, 8-Bit, FLASH, PIC CPU, 32MHz, CMOS, PDSO14
Frequently Asked Questions
Does PIC12LF1840T39A-I/ST include an RFID module, and which frequency does it support for contactless ID?
Yes, PIC12LF1840T39A-I/ST integrates a T39A RFID transponder module supporting ISO 11784/11785 at 125 kHz or 134.2 kHz, enabling low-frequency contactless identification without a separate RFID chip. This makes the device suitable for animal microchipping, access badges, and industrial asset tags where a single-chip solution reduces component count and PCB area.
How much Flash and RAM does PIC12LF1840T39A-I/ST provide, and is 4 kword enough for a typical RFID firmware stack?
The device provides 4 kword (8 kB) of Flash program memory and 256 bytes of SRAM. A minimal RFID transponder firmware stack including data encoding, CRC calculation, and basic I/O handling typically occupies 1-2 kword, leaving 2-3 kword free for application logic such as sensor sampling, ID management, or serial communication at 32 MHz.
Which supply voltage range does PIC12LF1840T39A-I/ST require, and can it run directly from two AA batteries?
PIC12LF1840T39A-I/ST operates from 2.5 V to 3.6 V, which is compatible with two AA batteries in series providing approximately 3 V fresh and dropping to 2.5 V near end-of-life. The LF (low-voltage) designation confirms it is designed for this sub-3.6 V range, and the 14-pin TSSOP package with low active current makes it well suited for portable, battery-powered RFID applications.
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| Qty. | Unit Price | Ext. Price |
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| 1+ | $2.2300 | $2.23 |
| 19+ | $2.1600 | $41.04 |
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| 100+ | $1.8900 | $189.00 |
| 1000+ | $1.7200 | $1720.00 |
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