PIC16C54-XTI/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
The PIC16C54-XTI/P is an 8-bit OTP PIC microcontroller clocked at up to 4 MHz with 512 bytes of program memory and 25 bytes of RAM. It provides 12 I/O pins and operates from 2.5 V to 6 V, making it suitable for simple, cost-sensitive control tasks. Housed in an 18-pin PDIP for easy through-hole assembly.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 18
- Lifecycle
- ACTIVE
- Datasheet
- PIC16C54-XTI/P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.8800(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 PIC16C54-XTI/P?
- 512-byte OTP program memory for permanent, tamper-resistant code storage
- 12 GPIO pins in an 18-pin PDIP for straightforward discrete control
- Wide 2.5 V to 6 V supply range compatible with alkaline battery stacks
- 4 MHz crystal-controlled clock with watchdog timer for reliable operation
- Industry-standard 18-pin PDIP enabling breadboard prototyping and DIP socket replacement
What is PIC16C54-XTI/P used for?
The PIC16C54-XTI/P is used in simple, high-volume consumer products such as toy controllers, appliance timers, and remote keypad decoders where OTP memory ensures code protection and low production cost. Its 12 GPIO lines and straightforward instruction set allow rapid firmware development for tasks like LED sequencing, button debouncing, and relay switching with minimal software complexity. Legacy equipment repair and fixed-function replacement controllers also benefit from its long production history and wide availability in the 18-pin PDIP form factor.
What are the specifications of PIC16C54-XTI/P?
| Pbfree Code | Yes |
| Manufacturer Package Code | PDIP-18 |
| Reach Compliance Code | Compliant |
| YTEOL | 3 |
| Has ADC | NO |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC16 |
| Clock Frequency-Max | 4MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | R-PDIP-T18 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of I/O Lines | 12 |
| Number of Timers | 1 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 12 |
| PWM Channels | NO |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP18,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| RAM (bytes) | 25 |
| RAM (words) | 25 |
| ROM (words) | 512 |
| ROM Programmability | OTPROM |
| Speed | 4MHz |
| Supply Current-Max | 3.3mA |
| Supply Voltage-Max | 6.25V |
| Supply Voltage-Min | 3.25V |
| Supply Voltage-Nom | 3.25V |
| 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) |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Where can I find the PIC16C54-XTI/P datasheet?
PIC16C54-XTI/P Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for PIC16C54-XTI/P?
Compatible alternatives and drop-in replacements for PIC16C54-XTI/P:
RISC Microcontroller, 8-Bit, OTPROM, PIC16 CPU, 4MHz, CMOS, PDIP18
Frequently Asked Questions
What is the maximum clock frequency of PIC16C54-XTI/P and what crystal configuration does the XT oscillator mode require?
The PIC16C54-XTI/P in XT oscillator mode runs at up to 4 MHz using a standard parallel-resonant crystal with two 22 pF load capacitors. The XT mode is optimized for crystals in the 100 kHz to 4 MHz range, providing better noise immunity than the RC oscillator option. A 4 MHz crystal delivers an instruction cycle time of 1 µs, which is adequate for most simple timing and control loops.
How much program memory does PIC16C54-XTI/P have, and how does OTP affect field updates?
The PIC16C54-XTI/P contains 512 words of one-time-programmable (OTP) memory. Once programmed, the code is permanently locked and cannot be erased or updated. This makes it ideal for mature, stable firmware in cost-sensitive mass production where devices must be deployed without the risk of accidental code modification, but it requires thorough validation before programming since no field updates are possible.
What supply voltage range does PIC16C54-XTI/P support, and can it run from two alkaline AA batteries?
The PIC16C54-XTI/P operates from 2.5 V to 6 V, which covers two alkaline AA cells in series (nominally 3 V, down to about 1.8 V each at end-of-life). At 3 V supply and 4 MHz it remains within specification for GPIO drive and timing accuracy, making it suitable for battery-powered toys, clocks, and remote controls that rely on the self-discharge of alkaline cells over months of use.
How many I/O pins does PIC16C54-XTI/P provide, and what drive current can each pin source or sink?
The PIC16C54-XTI/P has 12 bidirectional I/O pins across two ports (RA with 4 pins and RB with 8 pins). Each pin can source approximately 20 mA and sink up to 25 mA, sufficient to directly drive a standard 5 mm LED without a buffer transistor. The total package current is limited to 100 mA, so driving multiple high-current loads simultaneously requires external drivers.
When would an engineer choose PIC16C54-XTI/P over a flash-based PIC like PIC16F54 for a new product design?
PIC16C54-XTI/P is preferred when production costs must be minimized and firmware is fully validated before tapeout, as OTP devices carry a lower per-unit cost than flash variants in large volumes. If the design is in active development or requires firmware updates after deployment, the flash-based PIC16F54 at 4 MHz in an identical 18-pin PDIP is the better choice because it can be reprogrammed up to 10,000 times without a new device.
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