PIC16LC67T-04I/PT - 14KB OTP 8-bit MCU, 33 I/O, 4MHz | Microchip
N.º de pieza: PIC16LC67T-04I/PT ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $17.1 | $171,00 |
| 100 | $15.25 | $1.525,00 |
| 500 | $13.9 | $6.950,00 |
| 1.000 | $12.4 | $12.400,00 |
PIC16LC67T-04I/PT Descripción general
What is an 8-bit microcontroller? An 8-bit microcontroller is a single-chip computer that processes data 8 bits at a time, integrating a CPU, RAM, ROM/Flash/OTP program memory, and peripherals (timers, I/O, ADC, communication) on one die. The PIC16C family hierarchy is: PIC16C -> PIC16LC (low-power CMOS) -> PIC16LC6x (peripherally enhanced subset) -> PIC16LC67 (33 I/O, 14KB program). Microcontrollers sit at the embedded control layer of electronic systems, between sensor/actuator signals and higher-level processors.
Key features include fully static design for low-power operation, OTP memory for cost-sensitive volume production, an external oscillator interface, and a wide operating voltage range of 2.5V to 6.0V. The architecture is optimized for deterministic interrupt response, making it suitable for real-time control loops. Industrial-grade temperature rating (-40C to +85C) supports factory-floor and outdoor deployments.
The PIC16LC67T-04I/PT uses Microchip's classic PIC mid-range RISC architecture with a 14-bit instruction word and Harvard bus structure. Its 33 I/O pins can be multiplexed with on-chip peripherals such as timers, comparators, and synchronous/asynchronous serial ports. The OTP memory variant (vs. UV-repetition-flash) reduces die cost for high-volume, fixed-code applications where field reprogramming is not required.
Typical applications include industrial control panels, appliance motor control, automotive body modules, security alarm panels, and embedded instrumentation. The 33 I/O count supports multi-switch user interfaces and sensor fan-in designs where many digital channels are needed.
When designing with this part, note that OTP memory cannot be reprogrammed in-circuit; emulation via the PIC16C67-compatible windowed or flash variants is recommended during development. Decoupling VDD with a 0.1uF ceramic capacitor placed within 5mm of the supply pins is required for stable operation.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes for engineers evaluating the PIC16LC67T-04I/PT against newer PIC16F1xx and dsPIC alternatives.
Alternativas directas para PIC16LC67T-04I/PT — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC16LC67T-04I/PT (mismo factor de forma y huella) — difiere en Program Memory Size, Maximum Clock Frequency, Package, Program Memory Type, Operating Temperature.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC16LC67-04/PT
✅ Sustitución directa✓ En stock
$6.98 / unidad
Ver hoja de datos →PIC16LC67-04I/PT
✅ Sustitución directa✓ En stock
$6.95 / unidad
Ver hoja de datos →PIC16C67-04/PT
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$4.85 / unidad
Ver hoja de datos →PIC16C67-04I/PT
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
PIC16F877-20I/PT
✅ Sustitución directa✓ En stock
$5.1 / unidad
Ver hoja de datos →PIC16LC67T-04I/PT Valores máximos y características eléctricas
| Core Processor | PIC |
| Core Size | 8-bit |
| Program Memory Size | 14KB (8K x 14) OTP |
| RAM Size | 368 x 8 bytes |
| Number of I/O | 33 |
| Speed | 4 MHz |
| Oscillator Type | External |
| Encapsulado / Carcasa | 44-TQFP (PT) |
| Operating Voltage Range | 2.5 V to 6.0 V |
| Temperatura de funcionamiento | -40C to +85C (Industrial) |
| Connectivity | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Program Memory Type | OTP |
| Tipo de montaje | Surface Mount |
| Packaging | Tape & Reel (TR) |
Configuración de pines de PIC16LC67T-04I/PT
| Pin 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| Pin 2 | RA0/AN0 — Port A bit 0 / analog input 0 |
| Pin 3 | RA1/AN1 — Port A bit 1 / analog input 1 |
| Pin 4 | RA2/AN2 — Port A bit 2 / analog input 2 |
| Pin 5 | RA3/AN3/VREF — Port A bit 3 / analog input 3 / voltage reference |
| Pin 6 | RA4/T0CKI — Port A bit 4 / Timer 0 clock input |
| Pin 7 | RA5/AN4/SS — Port A bit 5 / analog input 4 / SPI slave select |
| Pin 8 | RE0/RD/AN5 — Port E bit 0 / parallel slave port read / analog input 5 |
| Pin 9 | RE1/WR/AN6 — Port E bit 1 / parallel slave port write / analog input 6 |
| Pin 10 | RE2/CS/AN7 — Port E bit 2 / parallel slave port chip select / analog input 7 |
| Pin 11 | VDD — Positive supply voltage |
| Pin 12 | VSS — Ground reference |
| Pin 13 | OSC1/CLKI — Oscillator input / external clock input |
| Pin 14 | OSC2/CLKO — Oscillator output / clock output |
| Pin 15 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer 1 oscillator output / Timer 1 clock |
| Pin 16 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer 1 oscillator input / CCP2 |
| Pin 17 | RC2/CCP1 — Port C bit 2 / CCP1 |
| Pin 18 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Pin 19 | RD0/PSP0 — Port D bit 0 / parallel slave port bit 0 |
| Pin 20 | RD1/PSP1 — Port D bit 1 / parallel slave port bit 1 |
| Pin 21 | RD2/PSP2 — Port D bit 2 / parallel slave port bit 2 |
| Pin 22 | RD3/PSP3 — Port D bit 3 / parallel slave port bit 3 |
| Pin 23 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Pin 24 | RC5/SDO — Port C bit 5 / SPI data out |
| Pin 25 | RC6/TX/CK — Port C bit 6 / UART TX / clock |
| Pin 26 | RC7/RX/DT — Port C bit 7 / UART RX / data |
| Pin 27 | RD4/PSP4 — Port D bit 4 / parallel slave port bit 4 |
| Pin 28 | RD5/PSP5 — Port D bit 5 / parallel slave port bit 5 |
| Pin 29 | RD6/PSP6 — Port D bit 6 / parallel slave port bit 6 |
| Pin 30 | RD7/PSP7 — Port D bit 7 / parallel slave port bit 7 |
| Pin 31 | VSS — Ground reference |
| Pin 32 | VDD — Positive supply voltage |
| Pin 33 | RB0/INT — Port B bit 0 / external interrupt |
| Pin 34 | RB1 — Port B bit 1 |
| Pin 35 | RB2 — Port B bit 2 |
| Pin 36 | RB3/PGM — Port B bit 3 / low-voltage programming |
| Pin 37 | RB4 — Port B bit 4 |
| Pin 38 | RB5 — Port B bit 5 |
| Pin 39 | RB6/PGC — Port B bit 6 / ICSP clock |
| Pin 40 | RB7/PGD — Port B bit 7 / ICSP data |
| Pin 41 | NC — Not connected (per datasheet) |
| Pin 42 | NC — Not connected (per datasheet) |
| Pin 43 | NC — Not connected (per datasheet) |
| Pin 44 | NC — Not connected (per datasheet) |
Aplicaciones típicas
PIC16LC67T-04I/PT es adecuado para 6 aplicacións: Industrial Control Panels, Appliance Motor Control, Automotive Body Modules, Security Alarm Panels, Embedded Instrumentation, Consumer Appliance User Interfaces.
Industrial Control Panels
The PIC16LC67T-04I/PT fits industrial control panels because its 33 digital I/O pins can scan a matrix keypad (4x5), drive multiplexed 7-segment or character LCDs, and read limit-switch / relay-status inputs simultaneously. The 14KB OTP program memory holds complete ladder-logic replacement firmware with HMI state machines, while 368 bytes of RAM buffer scan-table lookups and debounce timers. Industrial -40C to +85C operation tolerates factory-floor temperature swings; the 4MHz PIC mid-range core delivers deterministic interrupt response under 100ns for safety-critical E-stop handling.
Recomendado
Appliance Motor Control
The PIC16LC67T-04I/PT's built-in PWM module, 33 I/O, and 4MHz mid-range core make it a fit for cost-sensitive appliance motor controllers (washing-machine drum drives, dishwasher pumps, range-hood fans). The PWM peripheral drives TRIAC or IGBT gate drivers directly; the 14KB OTP holds commutation tables and fault-recovery routines. Its 2.5V-6.0V operating range lets it run directly from rectified 5V or 3.3V standby rails. Compared to a modern dsPIC, the PIC16LC67T is cheaper per die but lacks DSP instructions for sensorless FOC; choose it for simple V/Hz scalar drives rather than field-oriented control.
Recomendado
Automotive Body Modules
Body-electronics modules (window lifters, mirror adjusters, seat controllers, lighting drivers) are a classic PIC16LC67T-04I/PT deployment: 33 I/O scan multi-switch panels, the I2C/SPI/UART peripherals interface to body-controller CAN gateways or slave nodes, and the OTP memory locks firmware against unauthorised reflashing in the field. Industrial -40C to +85C operation handles cabin temperatures; the 2.5V minimum VDD survives cranking transients when paired with an external LDO. AEC-Q100 is not listed in verified data, so confirm with Microchip's automotive-grade PIC16LC6x variants for OEM body modules.
Recomendado
Security Alarm Panels
Alarm panels benefit from the PIC16LC67T-04I/PT's 33 I/O for zone-loop scanning (typically 8-16 zones) plus keypad, siren-driver, and dialer interfaces. The 14KB OTP stores encryption-aware event logs and dialer handshake routines while preventing firmware tampering - a critical security advantage of OTP over flash. Brown-out reset and watchdog timer hold the panel in a safe state across power glitches; UART peripherals drive legacy PSTN or GSM modems. Low-power CMOS keeps quiescent draw under 5mA for battery-backed 24-hour standby requirements common in EN50131 panels.
Recomendado
Embedded Instrumentation
The PIC16LC67T-04I/PT powers handheld digital instruments (multimeters, process calibrators, HVAC service tools) where its 2.5V-6.0V range supports 3.3V Li-ion or 5V USB operation. The 33 I/O drive LCD segment drivers, rotary-encoder inputs, and range-switch multiplexers; the 14KB OTP holds calibration constants in a tamper-resistant store. The 4MHz core executes 14-bit instructions per microsecond - sufficient for 100kSPS ADC sample streams when paired with an external ADC. Low-power CMOS is essential for handheld battery life; the LC variant sips <2mA active at 4MHz/5V.
Recomendado
Consumer Appliance User Interfaces
User-interface boards for microwave ovens, washing machines, and air-conditioner remotes deploy the PIC16LC67T-04I/PT because of its 33 I/O that directly drive 7-segment or dot-matrix displays, capacitive-touch sensors, and rotary encoders without external mux ICs. The 14KB OTP stores character-set lookup tables and menu state machines; the UART peripheral interfaces to the main appliance control board. Low-power CMOS operation extends battery life in remote-control applications; the industrial temperature range supports kitchen and laundry-room environments. Cost is the primary driver - PIC16LC67 is significantly cheaper than the equivalent ARM Cortex-M0+ in this footprint.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC16LC67T-04I/PT — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC16LC67-04/PT | PIC16LC67-04I/PT | PIC16C67-04/PT | PIC16C67-04I/PT | PIC16F877-20I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (PT) | 44-TQFP (PT) - same | 44-TQFP (PT) - same | 44-TQFP (PT) - same | 44-TQFP (PT) - same | 44-TQFP (PT) - same |
| Program Memory | 14KB OTP | 14KB OTP | 14KB OTP | 14KB OTP | 14KB OTP | 14KB Flash |
| Max Clock | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz |
| Operating Voltage | 2.5 V to 6.0 V | 2.5 V to 6.0 V | 2.5 V to 6.0 V | 3.0 V to 6.0 V | 3.0 V to 6.0 V | 2.0 V to 5.5 V |
| Temperature Range | -40C to +85C (I) | 0C to +70C | -40C to +85C | 0C to +70C | -40C to +85C | -40C to +85C |
| Process / Power | Low-power CMOS (LC) | Low-power CMOS (LC) | Low-power CMOS (LC) | Standard CMOS | Standard CMOS | Flash CMOS |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | Active |
Diferenciadores clave
- Low-power CMOS process for battery-backed applications (frente a PIC16C67-04I/PT)
- Pin-compatible migration path to flash-based PIC16F877-20I/PT (frente a PIC16C67-04I/PT (legacy C variant))
- OTP memory for code-locked production designs (frente a PIC16F877-20I/PT)
Notas de diseño
Decouple both VDD pins (11 and 32) with 0.1uF ceramic capacitors placed within 5mm of the package body, plus a bulk 10uF tantalum or aluminum electrolytic on the supply rail. The PIC16LC67T-04I/PT has dual VDD/VSS pairs to reduce internal ground bounce; failing to decouple both pairs independently can cause spurious ADC readings and erratic PWM outputs. Estimated: at 4MHz/5V the part draws ~5mA active, ~1uA sleep - low-power CMOS design should idle the CPU via SLEEP instruction whenever the 1ms polling loop permits.
OTP (one-time-programmable) memory cannot be rewritten or erased. During development, prototype with the PIC16F877-20I/PT (same 44-TQFP package, flash memory, ICSP-compatible pinout) to iterate firmware freely, then qualify the PIC16LC67T-04I/PT for production once the firmware image is frozen. Programming voltage (VPP) on the MCLR pin must reach 13V nominal during OTP blow; using only 5V on MCLR will silently fail programming without error indication. Industrial temperature samples must be ordered with the 'I' suffix - commercial-temperature parts will fail QA at -40C.
Route the oscillator traces (OSC1 pin 13, OSCC2 pin 14) on the top layer with a ground guard ring and keep them under 10mm length. Place the crystal or ceramic resonator within 5mm of the IC, with load capacitors tied to the same ground plane as the chip VSS pins. Estimated: stray capacitance above 10pF on OSC traces causes frequency error >0.5% on 4MHz crystals, which may breach UART baud-rate tolerances. Avoid routing digital signals (Port B/C/D) across the oscillator area to prevent coupling.
The 44-pin TQFP package has theta_JA of approximately 50 C/W on a 4-layer JEDEC test board. At 4MHz/5V active draw of ~5mA, total dissipation is 25mW, leading to a junction temperature rise of only 1.25C above ambient. Estimated: the PIC16LC67T-04I/PT does not require a heatsink for any documented application profile. Industrial-temperature operation (-40C to +85C) is comfortable within the package's 150C absolute-maximum junction temperature.
Información de cumplimiento
RoHS/REACH/lead-free status not present in verified distributor data. AEC-Q100 not listed in verified data; for automotive OEM body modules confirm with Microchip's automotive-grade PIC16LC6x variants separately.