PIC16C54-XT/P - 4MHz 8-Bit OTP MCU, 768B | Microchip
MPN: PIC16C54-XT/P ✓ פעילPIC16C54-XT/P סקירה
What is a baseline PIC microcontroller? A baseline PIC (Peripheral Interface Controller) microcontroller is an 8-bit Harvard-architecture RISC device in which program and data memory sit on separate buses. The 12-bit-wide instruction word yields 2:1 code compression over many competing 8-bit CISC microcontrollers of the same class, and the small instruction set keeps the silicon die and quiescent current extremely low. OTP variants are programmed once at production time and cannot be erased, which makes them ideal for high-volume, cost-sensitive embedded products where firmware is fully frozen before launch.
Key features of the PIC16C54-XT/P include its 4 MHz maximum clock frequency, the XT oscillator mode that supports a standard external crystal or resonator, a wide 2.5 V to 6.25 V (or per-datasheet 2.0 V to 6.25 V) operating voltage range, low-power CMOS construction, and seven/eight special-function hardware registers for compact firmware control. The 12 I/O pins are bidirectional with individually programmable direction.
The PIC16C54-XT/P uses a pipelined RISC core: every instruction executes in a single instruction cycle except for program branches, which take two cycles. The OTP program memory is accessed on a 12-bit bus, while RAM and SFRs use an 8-bit data bus. This Harvard split lets the core fetch the next opcode while completing the current instruction, giving the device its characteristic throughput-per-MHz advantage over accumulator-based 8-bit microcontrollers.
Typical applications for the PIC16C54-XT/P include low-cost consumer appliances, electronic toys, simple timer/sequencer circuits, automotive body controllers, smart-card readers, IR remote-control transmitters, and replacement logic for discrete glue-logic circuits. The wide operating voltage and small footprint also make it a fit for battery-powered devices and industrial sensor interfaces.
When designing with the PIC16C54-XT/P, remember that the OTP memory cannot be re-programmed in-circuit, so choose the UV-erasable PIC16C54C-04/P or flash PIC16F54-I/P for prototype iteration. Always place the bypass capacitor (typically 0.1 microfarad) as close as possible to VDD and VSS pins, and respect the oscillator start-up time when using the XT crystal mode.
This page consolidates distributor pricing, verified drop-in alternatives from the PIC16C5x family, and practical design notes that complement the Microchip datasheet.
חלופות תחליף ישיר עבור PIC16C54-XT/P — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC16C54-XT/P (אותו גורם צורה וטביעת רגל) — שונים ב Core Architecture, Program Memory Type, Program Memory Size, Package, Timers.
PIC16C54C-04/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C54A-04/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C54-10/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C54C-04I/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C54C-04E/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16F54-I/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C54-XT/P דירוגים מרביים ומאפיינים חשמליים
| Product Family | PIC16C5x baseline MCU |
| Core | 8-bit RISC Harvard |
| Instruction Width | 12-bit |
| תדר שעון מקסימלי | 4 MHz |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 768 B (512 x 12) |
| RAM | 25 B |
| I/O Pins | 12 |
| Timers | 1 x 8-bit (TMR0) |
| Hardware Stack | 2-level |
| Oscillator Mode (suffix) | XT (external crystal/resonator) |
| מארז | 18-pin PDIP (P) |
| Operating Voltage Range | 2.5 V to 6.25 V |
| סוג הרכבה | Through Hole |
| רמת MSL | Not applicable (through-hole) |
תצורת פינים של PIC16C54-XT/P
| פין 1 | RA2 — Bidirectional I/O port A bit 2 |
| פין 2 | RA3 — Bidirectional I/O port A bit 3 |
| פין 3 | RA4/TOCKI — Bidirectional I/O port A bit 4 / Timer0 clock input |
| פין 4 | MCLR — Master clear (reset) input, active low |
| פין 5 | VSS — Ground reference (logic ground) |
| פין 6 | RB0 — Bidirectional I/O port B bit 0 |
| פין 7 | RB1 — Bidirectional I/O port B bit 1 |
| פין 8 | RB2 — Bidirectional I/O port B bit 2 |
| פין 9 | RB3 — Bidirectional I/O port B bit 3 |
| פין 10 | RB4 — Bidirectional I/O port B bit 4 |
| פין 11 | RB5 — Bidirectional I/O port B bit 5 |
| פין 12 | RB6 — Bidirectional I/O port B bit 6 |
| פין 13 | RB7 — Bidirectional I/O port B bit 7 |
| פין 14 | VDD — Positive logic supply |
| פין 15 | OSC2/CLKOUT — Oscillator output / clock out (XT mode) |
| פין 16 | OSC1/CLKIN — Oscillator input / clock in (XT mode) |
| פין 17 | RA0 — Bidirectional I/O port A bit 0 |
| פין 18 | RA1 — Bidirectional I/O port A bit 1 |
יישומים טיפוסיים
PIC16C54-XT/P מתאים עבור 6 יישוםs: Low-Cost Consumer Appliance Controller, Battery-Powered Remote Control Transmitter, Automotive Body Electronics (Non-Safety), Industrial Sensor Interface and Timer, Electronic Toy and Hobby Project, Smart Card and Accessory Interface.
Low-Cost Consumer Appliance Controller
The PIC16C54-XT/P fits low-cost consumer appliance controllers thanks to its 4 MHz core, 768 bytes of OTP memory, and 12 I/O pins in an 18-pin PDIP package. With a typical active current under 2 mA at 4 MHz and 5 V plus sub-microamp sleep current, it can drive triac control of small motors and read push-button / capacitive-touch inputs while staying inside tight BOM budgets for high-volume production. The OTP memory locks firmware at production time, eliminating the risk of field reprogramming and the cost of a flash controller.
מומלץ
Battery-Powered Remote Control Transmitter
The PIC16C54-XT/P's wide 2.5 V to 6.25 V operating range and CMOS low-power construction make it a natural fit for battery-powered IR/RF remote control transmitters. Its TMR0 8-bit counter can drive the carrier generation for ASK/OOK modulation at 38 kHz, while the 12 I/O pins map cleanly onto a matrix keypad plus LED indicator plus output driver. A pair of AAA cells can power the device for years because sleep current is in the nanoamp range when TMR0 is halted.
מומלץ
Automotive Body Electronics (Non-Safety)
The PIC16C54-XT/P appears in non-safety automotive body electronics such as interior lighting sequencers, mirror controllers, and seat-position memories where extended temperature range and OTP cost efficiency matter. The XT oscillator mode supports automotive-grade crystals tolerant of -40C to +125C ambient. Although not AEC-Q100 qualified in its standard form, the part is widely used in body controllers with customer-specific Microchip part numbers, and the PIC16C54A-04/P is preferred for extended-temperature builds.
מומלץ
Industrial Sensor Interface and Timer
The PIC16C54-XT/P serves well in industrial sensor interface boards and stand-alone timer modules where deterministic single-cycle instruction execution and a simple 8-bit timer are sufficient. Its 33 single-cycle instructions, 2-level hardware stack, and direct/indirect/relative addressing modes let a small C or assembly program poll sensors, debounce inputs, and drive relay outputs with predictable latency. The wide operating voltage tolerates the noisy 12 V to 24 V industrial bus rails when paired with a simple regulator front-end.
מומלץ
Electronic Toy and Hobby Project
The PIC16C54-XT/P in the 18-pin PDIP package is a favorite for hobbyists building electronic toys, model-train controllers, and breadboard projects because the through-hole form factor fits standard perfboards and IC sockets. Its instruction-set simplicity (33 single-word instructions) makes PIC assembly a popular teaching example, and the 25-byte RAM plus 768-byte OTP is sufficient for sound-effect triggers, PWM-style motor control, and interactive game logic on a tight learning-curve budget.
מומלץ
Smart Card and Accessory Interface
The PIC16C54-XT/P can be deployed in smart-card readers and electronic accessory modules that need a compact 8-bit processor with deterministic timing and low standby current. TMR0 generates the UART-style bit-banging required for ISO 7816 contact-card interfaces, and the 12 I/O pins support the smart-card socket plus a few status LEDs. The OTP memory locks the security-sensitive firmware against in-field tampering, which is exactly what payment and identification accessory designs need.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC16C54-XT/P — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC16C54C-04/P | PIC16C54A-04/P | PIC16C54-10/P | PIC16C54C-04I/P | PIC16F54-I/P |
|---|---|---|---|---|---|---|
| Package | 18-pin PDIP (P) | 18-pin PDIP (P) - same | 18-pin PDIP (P) - same | 18-pin PDIP (P) - same | 18-pin PDIP (P) - same | 18-pin PDIP (P) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP (768 B) | OTP (768 B) - same | OTP (768 B) - same | OTP (768 B) - same | OTP (768 B) - same | Flash (768 B) |
| Maximum Clock Frequency | 4 MHz | 4 MHz - same | 4 MHz - same | 10 MHz | 4 MHz - same | 8 MHz |
| I/O Pins | 12 | 12 - same | 12 - same | 12 - same | 12 - same | 12 - same |
| RAM | 25 B | 25 B - same | 25 B - same | 25 B - same | 25 B - same | 25 B - same |
| In-Circuit Reprogrammable | No (OTP) | No (OTP) | No (OTP) | No (OTP) | No (OTP) | Yes (Flash, ICSP) |
מבדילים עיקריים
- Industry-standard baseline OTP MCU with the broadest third-party tooling support (לעומתPIC16C54C-04/P)
- Pin- and code-compatible drop-in replacement path to flash memory (לעומתPIC16F54-I/P)
- Windowed development variant in the same family for prototype erasure (לעומתPIC16C54C-04/P)
הערות תכנון
Estimated: at 5 V VDD and 4 MHz XT oscillator, the PIC16C54-XT/P draws approximately 1.8 mA active and under 1 microamp in sleep mode (input values from Microchip PIC16C5x family datasheet DS30412F DC characteristics table, not from this specific MPN's datasheet section). Place a 0.1 microfarad ceramic bypass capacitor directly between pins 14 (VDD) and 5 (VSS), with the lead length kept under 2 mm to suppress switching transients. For battery applications, drop VDD to 3 V to halve active current roughly linearly with voltage.
Keep the crystal or resonator within 10 mm of pins 15 and 16 (OSC2 and OSCC1) and route the XTAL traces over a continuous ground plane to avoid crosstalk into adjacent I/O lines. Add 22-33 pF load capacitors from each XTAL pin to VSS, sized per the crystal manufacturer's CL specification. Isolate high-current switching traces (relays, LEDs) from the oscillator area by at least 5 mm or guard with a ground trace to prevent clock jitter.
Do not program the PIC16C54-XT/P with EPROM code intended for the PIC16F54-I/P - although the pinout matches, the PIC16F54 adds ICSP pins and may map I/O differently during programming. Verify that the MCLR pin (4) is pulled up to VDD through a 10 kohm resistor and never left floating, or the device will see spurious resets. The two-level hardware stack cannot hold more than two nested subroutine calls - use iterative coding instead of recursion. Finally, remember that OTP memory cannot be erased, so always program a windowed PIC16C54C-04/P (CERDIP) prototype before committing the OTP production order.
מידע על תאימות
RoHS, REACH, lead-free, and halogen-free status not explicitly stated in the verified distributor data and require confirmation from the Microchip PIC16C54 product page or factory certificate of compliance. Part is not AEC-Q100 qualified in its standard PIC16C54-XT/P form; customers should consult Microchip for automotive-grade PIC16C54 variants.