PIC16LC65AT-04/PT - 8-bit MCU, 7KB OTP, 4MHz, 44-TQFP | Microchip
Référence : PIC16LC65AT-04/PT ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $7.5 | $7,50 |
| 10 | $6.75 | $67,50 |
| 100 | $5.95 | $595,00 |
| 500 | $5.2 | $2 600,00 |
| 1 000 | $4.65 | $4 650,00 |
PIC16LC65AT-04/PT Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (program + RAM), and peripheral interfaces. Within the broader taxonomy, an MCU belongs to the category of microcontrollers, which in turn fall under embedded processors and digital ICs. The PIC16C family specifically targets low-cost, high-performance 8-bit applications using a Harvard-architecture RISC core with a small, deterministic instruction set ideal for real-time control.
Key features of the PIC16LC65AT-04/PT include a 14-bit wide instruction word, an integrated watchdog timer, power-saving SLEEP mode, and parallel slave port support. The wide 2.5 V to 6.0 V supply range allows operation from both 3.3 V and 5 V rails commonly used in industrial and consumer designs. The 'LC' suffix denotes the low-power CMOS process variant, and the 'T' denotes tape-and-reel packaging for high-volume assembly.
The device uses a fully-static CMOS design, allowing the clock to be stopped and restarted without losing internal state - a key feature for low-power sleep/wake duty-cycled applications. With 33 I/O lines, designers have ample connectivity for sensors, buttons, displays, and external peripheral chips.
Typical applications include industrial control panels, simple sensor interfaces, low-cost motor control, appliance control boards, and embedded data-acquisition front ends. The integrated I2C/SPI/UART peripherals make it well suited as a communication gateway or slave controller. The 44-TQFP package provides a manageable footprint for hand-rework-friendly prototypes while remaining compatible with automated SMT lines.
When designing with this device, note that OTP memory cannot be reprogrammed, so code must be fully validated before committing. For new designs, consider migrating to the flash-based PIC16F877A or PIC16F887 family (same 44-pin TQFP footprint, drop-in compatible pinout) to enable in-system reprogramming and shorter development cycles.
This page synthesizes current distributor pricing, drop-in compatible Microchip alternatives from the same PIC16 family, and practical design guidance not found in the bare datasheet.
Alternatives de remplacement direct pour PIC16LC65AT-04/PT — 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 PIC16LC65AT-04/PT (même facteur de forme et même empreinte) — différant par ADC, Program Memory Size, Program Memory Type, Timers, RAM Size.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16F877A-I/PT
✅ Remplacement direct✓ En stock
$4.95 / unité
Voir la fiche technique →PIC16F877-04/PT
✅ Remplacement direct✓ En stock
$5.2 / unité
Voir la fiche technique →PIC16F887-I/PT
✅ Remplacement direct✓ En stock
$1.66 / unité
Voir la fiche technique →PIC16LC65A-04I/PQ
✅ Remplacement direct✓ En stock
$5.3 / unité
Voir la fiche technique →PIC16LC65A-04/PQ
✅ Remplacement direct✓ En stock
$6.5 / unité
Voir la fiche technique →PIC16F914-I/PT
✅ Remplacement direct✓ En stock
$2.98 / unité
Voir la fiche technique →PIC16LC65AT-04/PT Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Program Memory Size | 7 KB (4K x 14) OTP |
| RAM Size | 192 x 8 bytes |
| Maximum CPU Speed | 4 MHz |
| Supply Voltage Range | 2.5 V to 6.0 V |
| Number of I/O Pins | 33 |
| Boîtier / Format | 44-TQFP (10x10 mm) |
| Type de montage | Surface Mount |
| Peripherals | I2C, SPI, UART/USART |
| Instruction Word Width | 14-bit |
| Oscillator Type | External |
| Connectivity | I2C, SPI, UART/USART |
| Program Memory Type | OTP (One-Time Programmable) |
| Statut RoHS | unknown |
Configuration des broches de PIC16LC65AT-04/PT
| Broche 1 | OSC1/CLKIN — Oscillator input or external clock input |
| Broche 2 | OSC2/CLKOUT — Oscillator output or clock output |
| Broche 3 | MCLR/VPP — Master clear reset or programming voltage input |
| Broche 4 | RA0 — PORTA bit 0 (digital I/O or analog input AN0) |
| Broche 5 | RA1 — PORTA bit 1 (digital I/O or analog input AN1) |
| Broche 6 | RA2 — PORTA bit 2 (digital I/O or analog input AN2) |
| Broche 7 | RA3 — PORTA bit 3 (digital I/O or analog input AN3) |
| Broche 8 | RA4 — PORTA bit 4 (digital I/O, open-drain) |
| Broche 9 | RA5 — PORTA bit 5 (digital I/O or analog input AN4) |
| Broche 10 | VSS — Ground reference |
| Broche 11 | VDD — Positive supply voltage (2.5 V to 6.0 V) |
| Broche 12 | RB0/INT — PORTB bit 0 / external interrupt |
| Broche 13 | RB1 — PORTB bit 1 |
| Broche 14 | RB2 — PORTB bit 2 |
| Broche 15 | RB3 — PORTB bit 3 |
| Broche 16 | RB4 — PORTB bit 4 |
| Broche 17 | RB5 — PORTB bit 5 |
| Broche 18 | RB6 — PORTB bit 6 / in-circuit debugger pin |
| Broche 19 | RB7 — PORTB bit 7 / in-circuit debugger pin |
| Broche 20 | VSS — Ground reference |
| Broche 21 | VDD — Positive supply voltage |
| Broche 22 | RC0 — PORTC bit 0 (digital I/O or timer1 oscillator) |
| Broche 23 | RC1 — PORTC bit 1 (digital I/O or timer1 oscillator) |
| Broche 24 | RC2 — PORTC bit 2 (digital I/O or CCP1) |
| Broche 25 | RC3 — PORTC bit 3 (digital I/O or SCL/I2C clock) |
| Broche 26 | RC4 — PORTC bit 4 (digital I/O or SDA/I2C data) |
| Broche 27 | RC5 — PORTC bit 5 (digital I/O or SDO) |
| Broche 28 | RC6 — PORTC bit 6 (digital I/O or TX/CK) |
| Broche 29 | RC7 — PORTC bit 7 (digital I/O or RX/DT) |
| Broche 30 | VSS — Ground reference |
| Broche 31 | VDD — Positive supply voltage |
| Broche 32 | RD0 — PORTD bit 0 (digital I/O or PSP data) |
| Broche 33 | RD1 — PORTD bit 1 (digital I/O or PSP data) |
| Broche 34 | RD2 — PORTD bit 2 (digital I/O or PSP data) |
| Broche 35 | RD3 — PORTD bit 3 (digital I/O or PSP data) |
| Broche 36 | RD4 — PORTD bit 4 (digital I/O or PSP data) |
| Broche 37 | RD5 — PORTD bit 5 (digital I/O or PSP data) |
| Broche 38 | RD6 — PORTD bit 6 (digital I/O or PSP data) |
| Broche 39 | RD7 — PORTD bit 7 (digital I/O or PSP data) |
| Broche 40 | VSS — Ground reference |
| Broche 41 | VDD — Positive supply voltage |
| Broche 42 | RE0 — PORTE bit 0 (digital I/O or AN5 / RD) |
| Broche 43 | RE1 — PORTE bit 1 (digital I/O or AN6 / WR) |
| Broche 44 | RE2 — PORTE bit 2 (digital I/O or AN7 / CS) |
Applications typiques
PIC16LC65AT-04/PT convient pour 6 applications: Industrial Control Panels, Appliance Control Boards, Sensor Interface / Data Acquisition Front End, Simple Motor and Solenoid Drivers, Communication Gateway / Protocol Bridge, Embedded Data Logger (Sensor to EEPROM).
Industrial Control Panels
The PIC16LC65AT-04/PT fits industrial control panel designs that need a deterministic 8-bit core, 33 I/O lines for keypads and indicator LEDs, and reliable serial communication to downstream drivers. Its 2.5 V to 6.0 V supply tolerates the unregulated 24 V-to-5 V rails typical in factory equipment. The 4 MHz clock is sufficient for scan-loop polling of switches and PWM-driven buzzers. Compared with switching to a 32-bit MCU, this part keeps BOM cost low for high-volume appliance and panel products.
Recommandé
Appliance Control Boards
White-goods and small appliance controllers benefit from the PIC16LC65AT-04/PT's low power consumption, integrated I2C/SPI/UART, and 44-TQFP SMT compatibility with automated assembly lines. Its 7 KB OTP program memory is well-matched to fixed-function firmware (wash cycles, fan speed control, sensor readouts). The wide voltage range lets the same design operate from 3.3 V battery-backed or 5 V mains-derived rails. For cost-sensitive high-volume runs, OTP is actually preferred to lock firmware against field tampering.
Recommandé
Sensor Interface / Data Acquisition Front End
Use the PIC16LC65AT-04/PT as a low-cost sensor hub that aggregates readings from I2C or SPI sensors and reports them over UART to a host processor. Its 4 MHz clock and 192-byte RAM can comfortably handle polled sensor reads at 10-100 Hz with light averaging. The 33 I/O pins support multiple chip-select lines for SPI sensor stacks. As a slave controller in a larger embedded system, it offloads housekeeping from the main application processor, freeing it for higher-level tasks.
Recommandé
Simple Motor and Solenoid Drivers
The PIC16LC65AT-04/PT can drive low-side MOSFET switches or relays for small DC motors and solenoids through its GPIO pins. Its 4 MHz instruction rate easily generates PWM at audio-subsonic frequencies for motor-speed or valve-position control. The integrated UART allows command input from a master controller, while SPI/I2C connect to position encoders or current sensors. OTP memory locks the safety-critical control algorithm, preventing accidental firmware changes in the field.
Recommandé
Communication Gateway / Protocol Bridge
Deploy the PIC16LC65AT-04/PT as a bridge between I2C sensor networks and a UART-attached host (PC, modem, or another MCU). Its three hardware serial peripherals (I2C, SPI, UART) let it translate between buses without software bit-banging, reducing CPU load. 192 bytes of RAM is enough for short packet buffers in polling-mode bridges. For industrial Modbus-RTU or similar protocols, the deterministic instruction timing simplifies timing-budget calculations versus 32-bit Cortex-M parts.
Recommandé
Embedded Data Logger (Sensor to EEPROM)
Pair the PIC16LC65AT-04/PT with an external I2C EEPROM to build a compact data logger for unattended sensor recording. The 4 MHz core, watchdog timer, and SLEEP mode enable long battery life by waking periodically, sampling, and returning to sleep. UART output allows log retrieval without removing the device. OTP firmware locks the recording algorithm, ensuring field deployments cannot be accidentally reprogrammed. The 44-TQFP package suits conformal-coated outdoor or industrial enclosures.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16LC65AT-04/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16F877A-I/PT | PIC16F877-04/PT | PIC16F887-I/PT | PIC16LC65A-04I/PQ | PIC16F914-I/PT |
|---|---|---|---|---|---|---|
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-MQFP (PQ) - same die, different package | 44-TQFP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP (7 KB) | Flash (14 KB) | Flash (14 KB) | Flash (14 KB) | OTP (7 KB) | Flash (14 KB) |
| Program Memory Size | 7 KB (4K x 14) | 14 KB (8K x 14) | 14 KB (8K x 14) | 14 KB (8K x 14) | 7 KB (4K x 14) | 14 KB (8K x 14) |
| RAM Size | 192 x 8 bytes | 368 x 8 bytes | 368 x 8 bytes | 368 x 8 bytes | 192 x 8 bytes | 368 x 8 bytes |
| Maximum CPU Speed | 4 MHz | 20 MHz | 4 MHz | 20 MHz | 4 MHz | 20 MHz |
| Number of I/O Pins | 33 | 33 | 33 | 36 | 33 | 36 |
| Supply Voltage Range | 2.5 V to 6.0 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.5 V to 6.0 V | 2.0 V to 3.6 V |
| Peripherals | I2C, SPI, UART/USART | I2C, SPI, UART/USART, ADC | I2C, SPI, UART/USART, ADC | I2C, SPI, UART/USART, ADC, nanoWatt | I2C, SPI, UART/USART | I2C, SPI, UART/USART, LCD driver |
| Lifecycle Status | NRND | Active | Active | Active | NRND | Active |
Principaux différenciateurs
- Flash-based reprogrammability (vs PIC16LC65A-04I/PQ)
- Higher CPU clock headroom (vs PIC16F877-04/PT)
- Long-term availability (vs PIC16F914-I/PT)
Notes de conception
The PIC16LC65AT-04/PT uses OTP (One-Time Programmable) memory, so each unit can only be programmed once. Validate firmware on a flash-based equivalent (PIC16F877A-I/PT) or a socketed PIC16C65A development setup before committing to OTP production. Programming errors or firmware bugs discovered after programming result in scrapped silicon.
Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of each VDD pin (the device has multiple VDD pins on a 44-TQFP). Add a bulk 10 uF tantalum or aluminum polymer capacitor at the board's supply input. The PIC16LC65A family is sensitive to supply ripple during ADC conversions if used; keep analog and digital VDD traces short and separated if mixing analog and digital loads.
For the 44-TQFP (10x10 mm) package, route traces on a 4-layer PCB with a continuous ground plane beneath the IC. Keep the MCLR/VPP trace short and add a 10 kohm pull-up to VDD; if in-circuit programming is desired, expose the ICSP pins (RB6/RB7, MCLR) to a 5-pin header. Avoid long parallel runs to high-frequency signals to reduce crosstalk into the analog-input capable PORTA pins.
Informations de conformité
RoHS and REACH compliance status not explicitly stated in verified distributor data; Microchip's product environmental compliance documents should be consulted for definitive answers. Part is not AEC-Q100 qualified (industrial/commercial grade only).