PIC16C554-20I/P - 8-Bit 20MHz OTP MCU 896B | Microchip
MPN: PIC16C554-20I/P ✓ فعالPIC16C554-20I/P جائزہ
A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory (here OTP - one-time programmable), and peripherals onto one silicon die. Within the broader hierarchy, the PIC16C554 belongs to the 8-bit microcontroller family, which sits beneath the broader 'microcontroller' hypernym and above the specific PIC16C5xx baseline architecture. OTP variants trade re-programmability for lower unit cost and are commonly used in cost-sensitive, high-volume commercial and industrial products where firmware is finalized at production.
Key features include 80 bytes of RAM, 13 digital I/O pins, a 35 single-word instruction set, 200 ns instruction cycle at 20 MHz, and a programmable Watchdog Timer for code-flow integrity. The 8-level hardware stack and Power-on Reset (POR) simplify firmware bring-up, while the in-circuit serial programming (ICSP) interface enables in-field firmware updates before the OTP window is closed. CMOS process technology keeps quiescent current in the microamp range, enabling battery-friendly standby behavior.
Typical applications include appliance controllers, automotive body modules (aftermarket and low-speed body), industrial sensor interfaces, security keypads, and small white-goods control boards. Designers select the PIC16C554 when they need a low-cost 8-bit MCU with mature tooling, predictable interrupt latency, and an industrial temperature grade in a through-hole 18-pin package that supports hand-soldering and breadboard prototypes.
When designing with this device, budget OTP programming time into your production flow (parallel programming requires ~10-30 seconds per unit depending on the programmer) and ensure the chosen in-circuit programmer supports the C554 die. Avoid using this part for new designs where flash reprogrammability is required - migrate to the flash-based PIC16F54 family instead.
This page synthesizes distributor pricing, parametric comparison with same-package PIC16C5x alternatives, and practical design notes not consolidated on the manufacturer datasheet, giving engineers a faster evaluation path for legacy and industrial designs.
کے لیے ڈراپ اِن متبادل PIC16C554-20I/P — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC16C554-20I/P (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Program Memory Size, Mounting Type, Program Memory Type, RoHS Status.
PIC16C554-20/P
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C554-04/P
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C54A-20I/P
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C54C-20I/P
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16C55-10/P
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C554-20I/P زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Processor | PIC |
| Core Size | 8-Bit |
| Maximum Clock Speed | 20 MHz |
| Instruction Cycle Time | 200 ns |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 896 B (512 x 14) |
| RAM Size | 80 B |
| Number of I/O Pins | 13 |
| Instruction Set | 35 single-word instructions |
| پیکیج | 18-Pin PDIP (P) |
| ماؤنٹنگ ٹائپ | Through-Hole |
| آپریٹنگ درجہ حرارت | -40C to +85C (Industrial) |
| Oscillator Type | External |
| Watchdog Timer | Yes |
| ICSP Programming | Yes |
| MSL لیول | Not applicable (through-hole) |
PIC16C554-20I/P پن کنفیگریشن
| پن 1 | RA2 — Digital I/O port A bit 2 |
| پن 2 | RA3 — Digital I/O port A bit 3 |
| پن 3 | RA4/T0CKI — Digital I/O port A bit 4 / Timer0 clock input |
| پن 4 | MCLR — Master Clear (reset) input |
| پن 5 | VSS — Ground reference |
| پن 6 | RB0/INT — Digital I/O port B bit 0 / External interrupt |
| پن 7 | RB1 — Digital I/O port B bit 1 |
| پن 8 | RB2 — Digital I/O port B bit 2 |
| پن 9 | RB3 — Digital I/O port B bit 3 |
| پن 10 | RB4 — Digital I/O port B bit 4 |
| پن 11 | RB5 — Digital I/O port B bit 5 |
| پن 12 | RB6 — Digital I/O port B bit 6 |
| پن 13 | RB7 — Digital I/O port B bit 7 |
| پن 14 | VDD — Positive supply voltage |
| پن 15 | OSC2/CLKOUT — Oscillator crystal output / Clock out |
| پن 16 | OSC1/CLKIN — Oscillator crystal input / External clock in |
| پن 17 | RC0 — Digital I/O port C bit 0 |
| پن 18 | RC1 — Digital I/O port C bit 1 |
عام استعمالات
PIC16C554-20I/P کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Sensor Interface, Automotive Body Module (Aftermarket), Security Keypad / Access Control, Appliance Control Board, Battery-Powered Standby Controller, Hobbyist and Educational Microcontroller.
Industrial Sensor Interface
The PIC16C554-20I/P is a strong fit for industrial sensor-interface boards thanks to its 20 MHz clock and 200 ns instruction cycle, which lets the firmware sample at sub-microsecond intervals without timing jitter. Its 80 bytes of RAM comfortably hold a few ADC readings, a calibration table, and a small ring of state-machine variables, while the 896-byte OTP program memory accommodates medium-complexity code for sensor linearization, hysteresis filtering, and a Modbus or simple UART reporting protocol. The industrial -40C to +85C temperature grade supports factory-floor cabinets and outdoor enclosures.
تجویز کردہ
Automotive Body Module (Aftermarket)
For aftermarket automotive body modules such as alarm controllers, central-locking retrofits, and lighting controllers, the PIC16C554-20I/P provides deterministic interrupt handling and a 13-I/O count that suits relays, keypads, and buzzer drivers. The 200 ns instruction cycle lets a single MCU handle keypad scanning, debouncing, and serial-key programming simultaneously. The 18-pin PDIP through-hole package simplifies in-vehicle installation and field-serviceable replacements. Industrial temperature rating covers under-dash thermal environments typically seen in passenger vehicles.
تجویز کردہ
Security Keypad / Access Control
The PIC16C554-20I/P is commonly deployed in standalone keypad access controllers where its 35 single-word instruction set keeps firmware small enough to fit in the 896-byte OTP window. The 13 I/O pins handle a 4x4 matrix keypad plus a relay or magnetic-lock driver and a status LED. Watchdog timer ensures the keypad lock state machine recovers automatically from firmware or EMI upset, a critical reliability requirement for unattended security hardware. Through-hole PDIP packaging supports hand-soldered field installation by locksmith technicians.
تجویز کردہ
Appliance Control Board
The PIC16C554-20I/P powers compact appliance controllers such as coffee makers, simple washing-machine submodules, and small kitchen electronics, where its 8-bit architecture, low quiescent current, and OTP memory keep BOM cost low while supporting multiple timing-critical peripherals concurrently. The 20 MHz clock gives responsive user-interface feedback, and the 13 I/O pins map cleanly to a button matrix, LED indicators, triac firing signals, and a UART diagnostics port. Industrial temperature rating accommodates under-cabinet thermal rise in kitchen environments.
تجویز کردہ
Battery-Powered Standby Controller
The PIC16C554-20I/P suits battery-powered standby controllers such as remote sensor transmitters, low-power alarm panels, and uninterruptible monitor modules, because the PIC16C5x CMOS core draws only microamp-level standby current. The 200 ns wake-from-interrupt response supports infrequent but precise sampling of an attached ADC, while the 80-byte RAM is sufficient to buffer ten to fifteen recent readings. OTP program memory prevents accidental firmware modification in the field, which is valuable for safety-certified equipment.
تجویز کردہ
Hobbyist and Educational Microcontroller
The PIC16C554-20I/P is a popular choice for university microcontroller courses, maker projects, and teaching labs because its 35-instruction PIC architecture is widely documented in textbooks and supported by MPLAB X IDE and the XC8 compiler. The 18-pin PDIP through-hole package fits standard 0.3-inch-wide breadboards without SMD adapters, simplifying student wiring. The 20 MHz clock allows demonstration of interrupt-driven scheduling and PWM at the upper end of the PIC16C5x range, giving instructors a richer curriculum than slower baseline parts.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16C554-20I/P — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16C554-20/P | PIC16C554-04/P | PIC16C54A-20I/P | PIC16C54C-20I/P | PIC16C55-10/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-Pin PDIP | 18-Pin PDIP - same | 18-Pin PDIP - same | 18-Pin PDIP - same | 18-Pin PDIP - same | 18-Pin PDIP - same |
| Maximum Clock Speed | 20 MHz | 20 MHz | 4 MHz | 20 MHz | 20 MHz | 10 MHz |
| Program Memory | 896 B (512 x 14) OTP | 896 B OTP | 896 B OTP | 512 B OTP | 768 B OTP | 512 B OTP |
| RAM Size | 80 B | 80 B | 80 B | 25 B | 25 B | 24 B |
| I/O Pin Count | 13 | 13 | 13 | 12 | 12 | 12 |
| Instruction Set | 35 single-word | 35 single-word | 35 single-word | 33 single-word | 33 single-word | 35 single-word |
| Temperature Grade | Industrial -40C to +85C | Commercial 0C to +70C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Commercial 0C to +70C |
اہم امتیازی خصوصیات
- Highest OTP program memory in the PIC16C5x baseline family (بمقابلہPIC16C54A-20I/P)
- Largest RAM in the PIC16C5x baseline family (بمقابلہPIC16C54C-20I/P)
- Industrial temperature grade in the 20 MHz speed bin (بمقابلہPIC16C554-20/P)
ڈیزائن نوٹس
Place a 0.1 uF decoupling capacitor as close as possible to pin 14 (VDD), with the ground side via as short as possible to pin 5 (VSS). The PIC16C5x core is sensitive to VDD droop during high-frequency oscillator startup; adding a 10 uF bulk capacitor near the MCU improves power-on-reset (POR) reliability, particularly in cold-temperature industrial boot conditions.
OTP memory cannot be erased. Any code-development cycle that requires in-field firmware updates must use a flash-based PIC (PIC16F54) instead of the PIC16C554-20I/P. Production firmware must be 100% validated before programming, and any code-protection fuses must be set deliberately - accidental code-protect enables prevent factory re-programming for engineering rework and may render the device unrecoverable.
The MCLR pin (pin 4) requires a clean rising edge for reliable reset. Add a 10 kohm pull-up to VDD and a small (1-10 nF) capacitor to ground to filter noise on the MCLR line. Long MCLR traces running near relay-driver or triac-fired outputs without filtering will cause spurious resets during load switching events - place MCLR components within 5 mm of pin 4.
تعمیل کی معلومات
RoHS and REACH status not explicitly stated in verified web data; consult the manufacturer's product page or certificate of compliance for confirmation. The PIC16C554-20I/P is NOT AEC-Q100 qualified - for automotive OEM designs use the PIC16C554-20I/P-Q (where available) or migrate to AEC-Q100 flash parts such as PIC16F54-I/P.
