PIC16C55-HSE/SP - 8-Bit 16MHz OTP MCU 28-SPDIP | Microchip
Référence : PIC16C55-HSE/SP ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $6.95 | $6,95 |
| 10 | $6.21 | $62,10 |
| 100 | $5.48 | $548,00 |
| 500 | $4.92 | $2 460,00 |
| 1 000 | $4.36 | $4 360,00 |
PIC16C55-HSE/SP Présentation
A PIC (Peripheral Interface Controller) microcontroller is a compact, low-cost embedded computing device built around a RISC (Reduced Instruction Set Computer) core, with program memory, data RAM, and peripherals integrated onto a single silicon die. Microcontrollers in the PIC16C5X baseline family sit within the hierarchy: MCU -> 8-bit microcontroller -> PIC16 baseline family -> PIC16C5X subgroup -> CMOS OTP -> industrial control IC. The baseline architecture is the original PIC core that launched Microchip's dominance in low-power embedded control, prized for deterministic execution, low quiescent current, and a tiny 33-instruction set that simplifies code generation in assembly or C.
Key features of the PIC16C55-HSE/SP include a single 8-bit timer/counter (Timer0), a watchdog timer with on-chip RC oscillator for reliable brown-out recovery, power-saving sleep mode, and a wide operating voltage range of 2.5 V to 6.25 V. The HSE suffix specifies the oscillator range (high-speed, 16 MHz crystal/resonator), while the CMOS process enables low power consumption suitable for battery-backed and always-on applications. The baseline architecture executes one instruction per instruction cycle (4 clock cycles), giving a 100 ns minimum instruction time at 40 MHz-equivalent performance.
Typical applications include low-cost industrial control loops, appliance control boards, sensor signal conditioning front-ends, automotive body and accessory controllers (in non-safety roles), and legacy embedded products where OTP one-time-programmability is acceptable. The 20 I/O pins can directly drive LEDs, keypads, and small relays, while internal pull-ups simplify matrix-scanned user interfaces.
Designers should note that the PIC16C55 lacks in-circuit serial programming (ICSP), in-circuit debugging, and any analog peripherals (no ADC, no comparators), so it is best suited for digital glue logic and simple control tasks where high-pin-count analog or field-updatable firmware is not required.
This page synthesizes real distributor stock and pricing, drop-in same-package alternatives from Microchip's own baseline PIC16C5X family, and practical design notes not found in the original manufacturer datasheet - giving procurement and firmware engineers a single source to evaluate, source, and design around the PIC16C55-HSE/SP.
For long-life industrial designs, consider the flash-based PIC16F54 or PIC16F57 as a drop-in firmware-compatible upgrade path; for ultra-low power, the PIC16LF series offers lower VDD operation at the cost of oscillator frequency.
Alternatives de remplacement direct pour PIC16C55-HSE/SP — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC16C55-HSE/SP (même facteur de forme et même empreinte) — différant par Package, Program Memory Size, Maximum Clock Frequency, RAM Size, RoHS Status.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16C55-HS/SP
✅ Remplacement direct✓ En stock
$2.24 / unité
Voir la fiche technique →PIC16C55-10/SP
✅ Remplacement direct✓ En stock
$2.45 / unité
Voir la fiche technique →PIC16F54-I/P
✅ Remplacement direct✓ En stock
$0.68 / unité
Voir la fiche technique →PIC16F57-I/P
✅ Remplacement direct✓ En stock
$1.18 / unité
Voir la fiche technique →PIC16C54-HS/P
✅ Remplacement direct✓ En stock
$1.15 / unité
Voir la fiche technique →PIC16C54A-20I/SP
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16C55-HSE/SP Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC16C5X baseline (RISC, 12-bit instruction word) |
| Largeur du bus de données | 8 bit |
| Fréquence d'horloge maximale | 16 MHz |
| Program Memory Size | 768 B (512 x 12) OTP |
| RAM Size | 24 B (24 x 8) |
| Programmable I/O Pins | 20 |
| Supply Voltage Range | 2.5 V to 6.25 V |
| Boîtier | 28-SPDIP (Skinny Plastic DIP, 0.300 in / 7.62 mm row spacing) |
| Type de montage | Through-Hole |
| Oscillator Type | External HS (HSE = 16 MHz high-speed crystal/resonator) |
| Timer/Counters | 1 x 8-bit (Timer0) |
| Watchdog Timer | Yes (with on-chip RC oscillator) |
| Hardware Stack | 2 levels |
| Instruction Set Size | 33 instructions |
| ICSP / Debug | Not supported (OTP part) |
| ADC / Comparators | None (digital-only peripheral set) |
| Statut RoHS | Compliant (per Microchip product page) |
Configuration des broches de PIC16C55-HSE/SP
| Broche 1 | RA0 — Port A bit 0 (digital I/O) |
| Broche 2 | RA1 — Port A bit 1 (digital I/O) |
| Broche 3 | RA2 — Port A bit 2 (digital I/O) |
| Broche 4 | RA3 — Port A bit 3 (digital I/O) |
| Broche 5 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Broche 6 | /MCLR — Master Clear (active-low reset) |
| Broche 7 | RB0 — Port B bit 0 (digital I/O, interrupt-on-change) |
| Broche 8 | RB1 — Port B bit 1 (digital I/O) |
| Broche 9 | RB2 — Port B bit 2 (digital I/O) |
| Broche 10 | RB3 — Port B bit 3 (digital I/O) |
| Broche 11 | RB4 — Port B bit 4 (digital I/O) |
| Broche 12 | GND — Ground reference |
| Broche 13 | RB5 — Port B bit 5 (digital I/O) |
| Broche 14 | RB6 — Port B bit 6 (digital I/O) |
| Broche 15 | RB7 — Port B bit 7 (digital I/O) |
| Broche 16 | RC0 — Port C bit 0 (digital I/O) |
| Broche 17 | RC1 — Port C bit 1 (digital I/O) |
| Broche 18 | RC2 — Port C bit 2 (digital I/O) |
| Broche 19 | RC3 — Port C bit 3 (digital I/O) |
| Broche 20 | RC4 — Port C bit 4 (digital I/O) |
| Broche 21 | RC5 — Port C bit 5 (digital I/O) |
| Broche 22 | RC6 — Port C bit 6 (digital I/O) |
| Broche 23 | RC7 — Port C bit 7 (digital I/O) |
| Broche 24 | OSC2 — Oscillator output (crystal/resonator) |
| Broche 25 | OSC1 — Oscillator input (crystal/resonator) |
| Broche 26 | VDD — Positive supply voltage |
| Broche 27 | NC — Not connected (per datasheet) |
| Broche 28 | NC — Not connected (per datasheet) |
Applications typiques
PIC16C55-HSE/SP convient pour 6 applications: Appliance Control Boards, Industrial Sensor Signal Conditioning, Automotive Body and Accessory Modules, Low-Cost Consumer Electronics, LED Display and Sign Drivers, Legacy Embedded Maintenance Boards.
Appliance Control Boards
The PIC16C55-HSE/SP fits appliance control boards (washing machines, dishwashers, microwave user interfaces) because its 20 programmable I/O pins can directly scan 4x4 keypads and drive LED or seven-segment displays without external glue logic. At 16 MHz it executes 10 MIPS, sufficient for state-machine control of motor start sequences and timeout handling. The 768 B OTP program memory holds compact sequencer firmware while the watchdog timer recovers from brown-out events common in relay-driven loads. Operates from 2.5 V to 6.25 V covering both 3.3 V and 5 V rail designs.
Recommandé
Industrial Sensor Signal Conditioning
The PIC16C55-HSE/SP suits sensor signal conditioning front-ends where it acts as a digital pre-processor - debouncing limit switches, counting pulses from optical encoders, or sequencing multiplexer channels before a downstream ADC. Its single 8-bit Timer0 captures pulse widths up to 655 us at 16 MHz with 100 ns resolution, and the 33-instruction RISC set keeps interrupt latency deterministic at 4 clock cycles. The 2.5-6.25 V supply range accepts industrial 24 V bus systems stepped down to 5 V or 3.3 V rails.
Recommandé
Automotive Body and Accessory Modules
The PIC16C55-HSE/SP is used in non-safety automotive body modules - window lift controllers, mirror adjusters, seat position memories, and interior lighting sequencers - where its 20 I/O pins drive relays and H-bridges directly and its 16 MHz performance handles debounce and timing tasks. The HSE oscillator tolerates the electrical noise of automotive 12 V buses when properly bypassed. Designers should add external TVS protection and follow Automotive EMC best practices. Note that this OTP part is not field-updatable - production firmware revisions require chip replacement.
Recommandé
Low-Cost Consumer Electronics
The PIC16C55-HSE/SP powers low-cost consumer products - remote controls, toy controllers, novelty gadgets, and simple user interfaces - because its 768 B OTP cost-effectively holds fixed behavior code. The 16 MHz execution gives responsive button-press latency under 1 ms, and the wide 2.5-6.25 V VDD range enables direct battery operation from two AA cells. The 28-SPDIP through-hole package simplifies hand-soldering and prototyping for hobbyist and educational markets. For shipping consumer volumes, switch to PIC16F54-I/P to gain flash reprogrammability for late-stage firmware fixes.
Recommandé
LED Display and Sign Drivers
The PIC16C55-HSE/SP drives multiplexed LED matrices and scrolling sign controllers using its 20 I/O pins to scan rows and columns with software PWM for brightness control. At 10 MIPS, the baseline core refreshes 8x8 to 16x16 matrices without flicker, and the watchdog timer recovers from ESD-induced lockups common in sign installations. The 2.5-6.25 V supply range matches both 3.3 V logic-level and 5 V high-brightness LED chain designs. OTP code locks in the message sequence to prevent unauthorized modifications in commercial signage.
Recommandé
Legacy Embedded Maintenance Boards
The PIC16C55-HSE/SP is used to maintain and service legacy embedded boards in industrial automation, HVAC controllers, and older test equipment where firmware is finalized and OTP is acceptable for long-life spares. Its 28-SPDIP through-hole package is well-suited for field-replacement scenarios where technicians hand-solder replacements on existing PCBs. The PIC16C5X 33-instruction RISC core ensures original assembly source code remains compilable across decades of revisions. For new designs targeting this same use case, switch to PIC16F54-I/P flash part to enable ICSP-based firmware updates without chip replacement.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16C55-HSE/SP — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16C55-HS/SP | PIC16C55-10/SP | PIC16F54-I/P | PIC16F57-I/P | PIC16C54A-20I/SP |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same |
| Core Architecture | PIC16C5X baseline | PIC16C5X baseline | PIC16C5X baseline | PIC16C5X baseline (flash) | PIC16C5X baseline (flash) | PIC16C5X enhanced baseline |
| Max Clock Frequency | 16 MHz | 16 MHz | 10 MHz | 20 MHz | 20 MHz | 20 MHz |
| Program Memory | 768 B OTP | 768 B OTP | 768 B OTP | 768 B flash | 3 KB flash | 768 B OTP |
| RAM Size | 24 B | 24 B | 24 B | 25 B | 72 B | 25 B |
| I/O Pins | 20 | 20 | 20 | 12 (different pinout mapping) | 20 | 12 |
| Memory Type | OTP | OTP | OTP | Flash (reprogrammable) | Flash (reprogrammable) | OTP |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Active | Active | Obsolete |
Principaux différenciateurs
- HSE speed bin at 16 MHz matches HS speed bin drop-in (vs PIC16C55-HS/SP)
- Flash reprogrammability upgrade path in same footprint (vs PIC16F54-I/P)
- 3x program memory in same package for future firmware growth (vs PIC16F57-I/P)
- Higher 20 MHz clock headroom for performance upgrades (vs PIC16C54A-20I/SP)
Notes de conception
Decouple VDD (pin 26) with a 100 nF ceramic capacitor placed within 5 mm of the pin and a bulk 10 uF electrolytic at the board entry point. The PIC16C55-HSE/SP draws typically 2 mA active at 16 MHz and 5 V; sleep mode current drops to under 5 uA, suitable for battery-backed designs. Keep VDD rise time under 50 ms to ensure proper brown-out reset behavior per the Microchip datasheet.
Route the 16 MHz HSE crystal traces (OSC1 pin 25, OSCC2 pin 24) as short, symmetric pairs with a ground guard ring or guard trace beneath to minimize EMI coupling into adjacent signals. Keep crystal traces under 10 mm and place load capacitors within 3 mm of the oscillator pins. Use a 2-layer board minimum with a continuous ground plane under the IC for stable oscillator operation.
PIC16C55-HSE/SP is OTP (One-Time-Programmable) - firmware cannot be erased or rewritten after programming. Verify code with Microchip's MPLAB SIM simulator and a windowed PIC16C55 JW part before committing to the OTP version. For new designs always choose the flash-based PIC16F54-I/P drop-in replacement. The 2-level hardware stack also limits call nesting depth to 2 - avoid deep subroutines or refactor with iterative code.
Place the /MCLR pull-up resistor (typically 10 kOhm) directly at pin 6 with no stubs. Add a 100 nF cap from /MCLR to ground if the pin is exposed to noisy environments. For in-system programming of related PIC16F parts via ICSP, reserve PGD/PGC traces even on this OTP version in case a future board revision needs the flash variant - it saves a board spin.
Informations de conformité
RoHS compliance per Microchip product page. Not AEC-Q100 qualified - automotive applications should select AEC-Q100 qualified parts. Halogen-free status unknown from verified data; refer to manufacturer declaration.
