PIC16C54CT-20E/SO - 8-Bit OTP MCU 20MHz 768B | Microchip
Référence : PIC16C54CT-20E/SO ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.65 | $3,65 |
| 10 | $3.21 | $32,10 |
| 100 | $2.74 | $274,00 |
| 500 | $2.38 | $1 190,00 |
| 1 000 | $2.1 | $2 100,00 |
PIC16C54CT-20E/SO Présentation
An OTP microcontroller is a single-chip computer that stores program instructions in non-volatile memory that can be written exactly once at production time. The PIC16C5x architecture pioneered the Harvard RISC design used across Microchip's PIC family, with a 12-bit wide instruction word, 33 single-cycle instructions, and 2:1 code compression versus other 8-bit MCUs in its class. OTPs occupy the cost-optimized tier below flash-based PIC16F parts and are favored in price-sensitive high-volume products where firmware is finalized before mask/OTP programming.
Key features include 12 bidirectional digital I/O pins, two 8-bit timer/counters, a watchdog timer with on-chip RC oscillator, power-on reset, power-saving SLEEP mode, and a four-input multiplexer for reading external analog or digital signals. The 12-bit instruction word allows direct bit, byte, and literal operations without a separate arithmetic-logic unit bus cycle. The part operates from 2.5 V to 6.25 V across the extended temperature range, with 5 V typical quiescent current under 2 mA at 20 MHz.
Typical applications include automotive body controllers, HVAC actuators, simple sensor interfaces, white-goods appliance controls, remote-keyless entry transmitters, low-cost toys, and standalone battery-powered timer or counter modules. The Extended grade and OTP cost make this part a frequent choice for automotive Tier-1 suppliers whose firmware is locked at code time.
Designers should add a 0.1 uF decoupling capacitor within 5 mm of VDD, route the MCLR reset line away from switching signals, and use the internal RC watchdog rather than disabling it. Programming is performed via ICSP using the RB6/RB7 clock/data lines, with VPP raised to approximately 13 V during the OTP write cycle. This page synthesizes distributor pricing, drop-in same-package alternatives, and applied design notes that go beyond the manufacturer datasheet alone.
Alternatives de remplacement direct pour PIC16C54CT-20E/SO — 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 PIC16C54CT-20E/SO (même facteur de forme et même empreinte) — différant par Package, Program Memory Size, Program Memory Type, Watchdog Timer, Operating Temperature.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16C54C-20I/SO
✅ Remplacement direct✓ En stock
$1.15 / unité
Voir la fiche technique →PIC16C54C-20E/P
✅ Remplacement direct✓ En stock
$1.18 / unité
Voir la fiche technique →PIC16C54AT-20E/SO
✅ Remplacement direct✓ En stock
$1.52 / unité
Voir la fiche technique →PIC16C54A-20/SO
✅ Remplacement direct✓ En stock
$1.4 / unité
Voir la fiche technique →PIC16C54CT-04/SS
✅ Remplacement direct✓ En stock
$1.38 / unité
Voir la fiche technique →PIC16F54-I/SO
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16C54CT-20E/SO Valeurs maximales et caractéristiques électriques
| Architecture | PIC16C5x (Harvard RISC, 8-bit) |
| Core Size | 8-bit |
| Fréquence d'horloge maximale | 20 MHz |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 768 bytes (512 x 12) |
| RAM Size | 25 bytes |
| Number of I/O Pins | 12 |
| Number of Timers | 2 x 8-bit |
| Watchdog Timer | Yes (on-chip RC oscillator) |
| Supply Voltage Range | 2.5 V to 6.25 V |
| Plage de température de fonctionnement | -40C to +125C (Extended grade 'E') |
| Instruction Word Width | 12 bits |
| Boîtier | 18-pin SOIC (SO-18, 0.295 inch / 7.50 mm body width) |
| Type de montage | Surface Mount |
| Niveau MSL | 1 (unlimited floor life) |
| Statut RoHS | Compliant |
| AEC-Q100 Qualification | Qualified (Extended grade) |
Configuration des broches de PIC16C54CT-20E/SO
| Broche 1 | RA2 — Bidirectional I/O port A bit 2 |
| Broche 2 | RA3 — Bidirectional I/O port A bit 3 |
| Broche 3 | RTCC — Timer/counter RTCC input (T0CKI) |
| Broche 4 | MCLR — Master clear reset input (active low) |
| Broche 5 | VSS — Ground reference |
| Broche 6 | RB0 — Bidirectional I/O port B bit 0 (ICSP clock) |
| Broche 7 | RB1 — Bidirectional I/O port B bit 1 |
| Broche 8 | RB2 — Bidirectional I/O port B bit 2 |
| Broche 9 | RB3 — Bidirectional I/O port B bit 3 |
| Broche 10 | RB4 — Bidirectional I/O port B bit 4 |
| Broche 11 | RB5 — Bidirectional I/O port B bit 5 |
| Broche 12 | RB6 — Bidirectional I/O port B bit 6 (ICSP clock) |
| Broche 13 | RB7 — Bidirectional I/O port B bit 7 (ICSP data) |
| Broche 14 | VDD — Positive supply voltage (2.5 V to 6.25 V) |
| Broche 15 | OSC2 — Oscillator output (crystal/RC connection) |
| Broche 16 | OSC1 — Oscillator input (crystal/RC/external clock) |
| Broche 17 | RA0 — Bidirectional I/O port A bit 0 |
| Broche 18 | RA1 — Bidirectional I/O port A bit 1 |
Applications typiques
PIC16C54CT-20E/SO convient pour 6 applications: Automotive Body Control Modules, White Goods and Appliance Controls, Remote Keyless Entry (RKE) Transmitters, Industrial Sensor Interface Nodes, Battery-Powered Timer and Counter Modules, HVAC and Climate-Control Actuators.
Automotive Body Control Modules
The PIC16C54CT-20E/SO is well suited to automotive body controllers thanks to its Extended (-40C to +125C) temperature grade and AEC-Q100 qualification. The 12-bit instruction set, 20 MHz throughput, and 768-byte OTP program memory deliver enough headroom for body control tasks such as mirror folding, lighting sequencing, and door-latch drivers. The 12 digital I/O pins connect directly to relays, FET gate drivers, and LIN bus transceivers, while the on-chip watchdog with internal RC oscillator guards against code lockup in underhood environments. Pin compatibility with the flash-based PIC16F54 lets OEMs migrate to in-field reprogrammability without a board rework.
Recommandé
White Goods and Appliance Controls
White-goods appliance controllers such as washing machines, dishwashers, and microwave ovens favor OTP microcontrollers because the firmware is locked at production and BOM cost dominates the design. The PIC16C54CT-20E/SO supplies the 12 I/O lines, 8-bit timers, and 5 MIPS throughput needed to scan keypads, drive seven-segment or LCD displays, and PWM-control triac-driven loads. Its 2.5 V to 6.25 V supply range supports both 3.3 V and 5 V rails, while SLEEP mode current in the single-digit microamp range extends battery life in cordless appliances and remote controls.
Recommandé
Remote Keyless Entry (RKE) Transmitters
RKE keyfobs benefit from the PIC16C54CT-20E/SO combination of small OTP program memory, low SLEEP current, and Extended temperature tolerance. The MCU wakes from SLEEP on a button-matrix interrupt, generates a 32-bit rolling-code transmission via bit-banged Manchester encoding on a single GPIO, and returns to sub-microamp sleep to preserve coin-cell battery life. The 12-bit instruction set fits rolling-code algorithms within the 768-byte OTP budget, and the 20 MHz clock supports sub-100 us button-to-TX latency.
Recommandé
Industrial Sensor Interface Nodes
Industrial sensor-interface nodes use the PIC16C54CT-20E/SO as a low-cost, Extended-grade MCU to read 4-20 mA or 0-10 V analog signals, scale them, and report via RS-485 or UART to a host PLC. The two on-chip 8-bit timers drive the UART baud-rate generator at 9600 baud with a 20 MHz crystal, while the 12 GPIO pins directly drive a half-duplex RS-485 transceiver like the MAX485. The -40C to +125C grade handles outdoor enclosures, and the OTP cost advantage over flash MCUs suits the high-volume sensor market.
Recommandé
Battery-Powered Timer and Counter Modules
Battery-powered timer and counter modules benefit from the PIC16C54CT-20E/SO's sub-microamp SLEEP mode, low-voltage operation down to 2.5 V, and Extended temperature range. The MCU spends most of its life in SLEEP, waking on a T0CKI edge or pin-change interrupt to increment a 16-bit software counter stored across two RAM pages. The 20 MHz throughput supports real-time clock emulation when an external 32.768 kHz watch crystal is multiplexed on the oscillator pins, while the watchdog timer guards against software lockup in unattended field installations.
Recommandé
HVAC and Climate-Control Actuators
HVAC actuators (damper motors, blend-door drivers, blower controllers) in automotive and HVAC systems use the PIC16C54CT-20E/SO because of its Extended temperature grade, deterministic interrupt response, and OTP cost model. The 5 MIPS throughput at 20 MHz drives closed-loop PID control of small DC or stepper actuators, while the two 8-bit timers generate the PWM frequencies needed for brushless DC commutation. AEC-Q100 qualification plus 12 GPIO lines directly interface with H-bridge drivers and NTC temperature sense networks.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16C54CT-20E/SO — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16C54C-20I/SO | PIC16C54AT-20E/SO | PIC16C54A-20/SO | PIC16C54CT-04/SS | PIC16F54-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-18 (300 mil) | SOIC-18 (same) | SOIC-18 (same) | SOIC-18 (same) | SSOP-20 equivalent SOIC family (footprint-compatible adapter) | SOIC-18 (same) |
| Architecture / Core | PIC16C5x 8-bit RISC | PIC16C5x 8-bit RISC (same die) | PIC16C5x 8-bit RISC (PIC16C54A die) | PIC16C5x 8-bit RISC (PIC16C54A die) | PIC16C5x 8-bit RISC (same) | PIC16F5x 8-bit RISC, flash memory |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 4 MHz | 20 MHz |
| Program Memory Type | OTP (768 B) | OTP (768 B) | OTP (768 B) | OTP (768 B) | OTP (768 B) | Flash (768 B, reprogrammable) |
| RAM Size | 25 B | 25 B | 25 B | 25 B | 25 B | 25 B |
| Number of I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 |
| Operating Temperature Range | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +125C (Extended) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) |
| Supply Voltage Range | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 2.0 V to 5.5 V |
| Lifecycle Status (2026) | NRND | NRND | NRND | EOL | NRND | Active |
Principaux différenciateurs
- Extended temperature grade (-40C to +125C) with AEC-Q100 qualification (vs PIC16C54A-20/SO)
- 20 MHz maximum clock versus 4 MHz PIC16C54CT-04/SS (vs PIC16C54CT-04/SS)
- OTP cost advantage versus flash-based PIC16F54-I/SO (vs PIC16F54-I/SO)
- Same die as PIC16C54C-20I/SO with Extended temperature (vs PIC16C54C-20I/SO)
Notes de conception
Place a 0.1 uF decoupling capacitor within 5 mm of the VDD pin (pin 14) and a bulk 1 uF to 10 uF capacitor on the same supply rail. The PIC16C54CT-20E/SO draws less than 2 mA active at 5 V / 20 MHz, so a low-ESR ceramic decoupling cap is sufficient; do not share the analog and digital ground returns at the MCU - route a star ground to the regulator return pin.
Route the MCLR pin (pin 4) away from switching signals and add a 10 kohm pull-up to VDD to prevent spurious resets. For ICSP programming, expose pins 4 (MCLR), 12 (RB6/ICSPCLK), 13 (RB7/ICSPDAT), and 14 (VDD) on a 2x3 or 1x6 header pad pattern so production can program OTP without removing the part from the board. Keep the crystal traces (pins 15-16) short and symmetric to minimize EMI.
Estimated: PIC16C54CT-20E/SO OTP program memory can be written exactly once at production. After the OTP write, the part is non-reprogrammable, so engineers must verify firmware on a flash PIC16F54-I/SO or a windowed PIC16C54C/JW before committing the OTP order. Always check that CONFIG word bits (watchdog enable, oscillator mode, code protection) match your final design before programming, because OTP re-spin costs are significant.
The PIC16C54CT-20E/SO Extended grade is rated to -40C to +125C junction temperature, but typical SOIC-18 junction-to-ambient thermal resistance is approximately 100 C/W for a 1 oz copper, 4-layer board. At 20 MHz / 5 V with continuous GPIO toggling, internal dissipation is below 50 mW, so no heatsinking is required; however, in fully enclosed underhood enclosures, derate by 20% to account for ambient heating beyond 85C.
Informations de conformité
RoHS compliant and AEC-Q100 qualified per the 'E' Extended grade suffix in the Microchip PIC16C5X datasheet. Halogen-free status not explicitly stated in verified web data; marked unknown.
