PIC16C67T-04I/L - 8-Bit 4MHz 14KB OTP MCU | Microchip | PLCC-44
N.º da peça: PIC16C67T-04I/L ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $4.07 | $4,07 |
| 10 | $3.95 | $39,50 |
| 100 | $3.72 | $372,00 |
| 500 | $3.5 | $1.750,00 |
| 1.000 | $3.28 | $3.280,00 |
PIC16C67T-04I/L Visão geral
A PIC16C-series microcontroller is an 8-bit RISC (Reduced Instruction Set Computer) device built on a Harvard architecture, separating program and data memory buses to allow simultaneous instruction fetch and operand access. In the broader taxonomy, the PIC16C67 sits below 16-bit dsPIC and 32-bit PIC32 families but above base 8-bit PIC10/12/14/16 architectures, making it a mid-range option for cost-sensitive and time-deterministic designs. The 'C' suffix indicates a CMOS OTP device, contrasting with 'F' (Flash) and 'CR' (ROM) variants; OTP parts are traditionally used in mature or high-volume production where field re-programmability is unnecessary.
Key features include 35 single-cycle instructions (200 ns at 20 MHz; 1 us at 4 MHz), a programmable code-protection scheme, on-chip Power-on Reset, Watchdog Timer with its own on-chip RC oscillator, and an 8-bit Timer0 plus a 16-bit Timer1 with capture/compare capability. The device supports synchronous serial communication (SSP) for SPI and I2C, an asynchronous serial port (USART/SCI), and an 8-bit parallel slave port. With 33 I/O lines, designers can drive LED arrays, keypads, character LCDs, and parallel peripherals without external glue logic.
From an architectural standpoint, the PIC16C67 implements a 14-bit instruction word and a separate 8-bit data bus, with hardware stack depth of 8 levels and direct/indirect addressing modes. Its 4 MHz CPU rate derives from the '04' speed suffix; the '-04I' suffix denotes industrial temperature range (-40C to +85C). Compared with the earlier PIC16C6x predecessors, the 67 variant adds a parallel slave port and a hardware USART, which makes it well suited for industrial-control and instrumentation backplanes.
Typical applications include industrial automation controllers, HVAC system controllers, security and alarm panels, point-of-sale terminals, and legacy instrumentation front-ends. The wide operating voltage range (4.5 V to 5.5 V) and industrial temperature grade also support automotive aftermarket, building-automation, and uninterruptible power-supply controller boards where the OTP cost advantage outweighs in-field reprogramming needs.
When designing with this device, plan for a stable 4 MHz external clock source (crystal, ceramic resonator, or oscillator module) since the PIC16C67 does not include an internal oscillator; verify the maximum sourcing/sinking current per I/O pin (typically 25 mA) and the total package dissipation budget; and confirm that any 5 V-tolerant peripherals are powered from the same rail to avoid latch-up. Adding a proper brown-out or Power-on Reset strategy is recommended in noisy industrial environments.
This page synthesizes distributor pricing, drop-in alternatives within the PIC16C6x family, and practical design notes not found in the manufacturer datasheet alone.
Alternativas drop-in para PIC16C67T-04I/L — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC16C67T-04I/L (mesmo formato e footprint) — diferindo em Program Memory Size, Program Memory Type, Timers, RAM Size, Mounting Type.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16C67-04I/L
✅ Drop-In✓ Em estoque
$4.5 / unidade
Ver ficha técnica →PIC16C66T-20I/SO
✅ Drop-In✓ Em estoque
$7.25 / unidade
Ver ficha técnica →PIC16C65BT-04I/PT
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$4.1 / unidade
Ver ficha técnica →PIC16C662T-20E/L
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$5.4 / unidade
Ver ficha técnica →PIC16C64A-04I/L
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$4.5 / unidade
Ver ficha técnica →PIC16C67T-04I/L Classificações máximas e características elétricas
| Core | PIC 8-bit RISC (PIC16C) |
| Instruction Set Architecture | 14-bit Harvard, 35 instructions |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 14 KB (8K x 14) |
| Data RAM | 368 bytes |
| Data EEPROM | Not present (ROMless for data) |
| Maximum Clock Speed | 4 MHz (CPU clock input) |
| Instruction Cycle Time | 1 us at 4 MHz (single-cycle) |
| Supply Voltage (Vdd) | 4.5 V to 5.5 V |
| I/O Pins | 33 |
| Timers | Timer0 (8-bit), Timer1 (16-bit), Watchdog Timer |
| Serial Interfaces | USART/SCI, SSP (SPI / I2C) |
| Parallel Slave Port | Yes, 8-bit |
| Capture / Compare | 16-bit, 1 channel |
| A/D Converter | Not present (digital-only MCU) |
| Faixa de temperatura de operação | -40C to +85C (Industrial) |
| Package Type | PLCC-44 (16.59 x 16.59 mm) |
| Tipo de montagem | Surface Mount |
Configuração de pinos do PIC16C67T-04I/L
| Pino 1 | PSP0/RD — Parallel Slave Port bit 0 / Port D bit 0 |
| Pino 2 | PSP1/RD1 — Parallel Slave Port bit 1 / Port D bit 1 |
| Pino 3 | PSP2/RD2 — Parallel Slave Port bit 2 / Port D bit 2 |
| Pino 4 | PSP3/RD3 — Parallel Slave Port bit 3 / Port D bit 3 |
| Pino 5 | PSP4/RD4 — Parallel Slave Port bit 4 / Port D bit 4 |
| Pino 6 | PSP5/RD5 — Parallel Slave Port bit 5 / Port D bit 5 |
| Pino 7 | PSP6/RD6 — Parallel Slave Port bit 6 / Port D bit 6 |
| Pino 8 | PSP7/RD7 — Parallel Slave Port bit 7 / Port D bit 7 |
| Pino 9 | VSS — Ground reference |
| Pino 10 | VDD — Positive supply (4.5 V to 5.5 V) |
| Pino 11 | RC0/T1OSO — Port C bit 0 / Timer1 oscillator output |
| Pino 12 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator input / CCP2 |
| Pino 13 | RC2/CCP1 — Port C bit 2 / Capture-Compare-PWM 1 |
| Pino 14 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Pino 15 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Pino 16 | RC5/SDO — Port C bit 5 / SPI data out |
| Pino 17 | RC6/TX/CK — Port C bit 6 / USART TX or clock |
| Pino 18 | RC7/RX/DT — Port C bit 7 / USART RX or data |
| Pino 19 | VSS — Ground reference |
| Pino 20 | VDD — Positive supply (4.5 V to 5.5 V) |
| Pino 21 | RB0/INT — Port B bit 0 / External interrupt |
| Pino 22 | RB1 — Port B bit 1 |
| Pino 23 | RB2 — Port B bit 2 |
| Pino 24 | RB3 — Port B bit 3 |
| Pino 25 | RB4 — Port B bit 4 |
| Pino 26 | RB5 — Port B bit 5 |
| Pino 27 | RB6/ICSPCLK — Port B bit 6 / ICSP clock |
| Pino 28 | RB7/ICSPDAT — Port B bit 7 / ICSP data |
| Pino 29 | RA0/AN0 — Port A bit 0 / Analog input 0 (digital-only) |
| Pino 30 | RA1/AN1 — Port A bit 1 / Analog input 1 (digital-only) |
| Pino 31 | RA2/AN2 — Port A bit 2 / Analog input 2 (digital-only) |
| Pino 32 | RA3/AN3/VREF — Port A bit 3 / Analog input 3 / Vref |
| Pino 33 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Pino 34 | RA5/AN4/SS — Port A bit 5 / Analog input 4 / SPI slave select |
| Pino 35 | RE0/RD/AN5 — Port E bit 0 / Read control / AN5 |
| Pino 36 | RE1/WR/AN6 — Port E bit 1 / Write control / AN6 |
| Pino 37 | RE2/CS/AN7 — Port E bit 2 / Chip select / AN7 |
| Pino 38 | VSS — Ground reference |
| Pino 39 | VDD — Positive supply (4.5 V to 5.5 V) |
| Pino 40 | OSC2/CLKOUT — Oscillator output / clock out |
| Pino 41 | OSC1/CLKIN — Oscillator input / external clock in |
| Pino 42 | MCLR/VPP — Master clear reset / programming voltage |
| Pino 43 | RA6/OSC2 — Port A bit 6 / alternate oscillator |
| Pino 44 | RA7/OSC1 — Port A bit 7 / alternate oscillator |
Aplicações típicas
PIC16C67T-04I/L é adequado para 6 aplicaçãos: Industrial Automation Controllers, Security and Alarm Panel Controllers, HVAC and Building Automation, Point-of-Sale Terminals, Legacy Instrumentation Front-Ends, Uninterruptible Power Supply (UPS) Controllers.
Industrial Automation Controllers
The PIC16C67T-04I/L fits industrial automation controllers because its 33 digital I/O lines, hardware USART, and SSP peripheral set can drive relays, contactors, optocouplers, and sensor arrays without external glue logic. The 4 MHz CPU with 1 us single-cycle instructions provides deterministic timing required for PLC scan loops and PID loops at modest update rates, while the industrial -40C to +85C temperature range and 4.5-5.5 V supply tolerance tolerate factory-floor power conditions. The on-chip watchdog timer with dedicated RC oscillator offers fail-safe recovery from firmware lockups, which is critical in unattended industrial installations. Pair it with a 24 V-to-5 V isolated supply and a brown-out supervisor for added robustness. Compared with newer Flash MCUs, the OTP cost advantage makes it attractive for high-volume machine-control boards where firmware is final.
Recomendado
Security and Alarm Panel Controllers
Security and alarm panel controllers benefit from the PIC16C67T-04I/L's 33 I/O pins for zone inputs, siren drivers, and keypad scanning. The hardware USART enables RS-232 connection to central-station modems or GSM modules, while the SSP peripheral supports SPI/I2C for digital keypads and EEPROM storage of installer settings. With 14 KB of OTP program memory, mature alarm firmware can be deployed in volume at low unit cost. The watchdog timer and Power-on Reset guard against lockups during brown-outs on long-lived backup-battery-powered installations. Pair it with a 4x4 matrix keypad, piezo driver, and a sealed lead-acid charger for a complete control head. Compared with modern Cortex-M0+ parts, the simpler PIC architecture reduces firmware complexity for legacy security integrators.
Recomendado
HVAC and Building Automation
The PIC16C67T-04I/L is well matched to HVAC and building-automation controllers thanks to its 33 I/O lines for triac-driven fan speeds, damper actuators, and thermostat sensor arrays. The USART supports BACnet MS-TP or Modbus RTU over RS-485 transceivers for network connectivity, while the SSP port can drive I2C temperature/humidity sensors and SPI EEPROMS for setpoint storage. Its 4.5-5.5 V supply aligns with typical 5 V regulator rails downstream of 24 VAC transformer inputs. The -40C to +85C industrial temperature range handles plenum and rooftop enclosures without derating. Pair the device with a triac driver array, a 24 VAC zero-cross detector, and a watchdog timer supervisor for reliable field deployment. Versus modern Cortex-M0+ MCUs, the lower-cost OTP die benefits high-volume thermostat and damper-controller production runs.
Recomendado
Point-of-Sale Terminals
Point-of-sale (POS) terminals leverage the PIC16C67T-04I/L's 14 KB program memory for keypad scanning, simple menu handling, and serial communication with a host cash register. The 33 I/O lines connect to 4x4 keypads, LCD character displays, magnetic-stripe readers, and receipt-printer stepper motors without external expanders. The hardware USART links the terminal to the main POS terminal via RS-232, and the SSP port can drive SPI-based FLASH for log storage. The OTP memory provides tamper-resistance suitable for retail cash-handling applications where firmware cloning must be deterred. Industrial temperature range and 5 V supply accommodate kitchen and outdoor kiosk environments. Pair with a character LCD, piezo buzzer, and a 5 V linear regulator for a compact POS terminal.
Recomendado
Legacy Instrumentation Front-Ends
Legacy instrumentation front-ends such as bench-top multimeters, laboratory data loggers, and process indicators benefit from the PIC16C67T-04I/L's deterministic 1 us instruction cycle, 33 I/O lines, and 14 KB OTP program memory. The USART provides RS-232 output to PCs and printers, while the parallel slave port lets a co-processor or DSP share bus access for high-throughput data buffering. Industrial -40C to +85C rating supports lab and process-plant environments. The watchdog timer protects unattended measurement runs from firmware glitches. Pair with a precision op-amp signal-conditioning chain, a 16x2 character LCD, and a serial EEPROM for instrument calibration storage. Compared with newer Flash parts, the OTP PIC16C67T-04I/L remains attractive for high-volume, fixed-feature instruments.
Recomendado
Uninterruptible Power Supply (UPS) Controllers
UPS controllers benefit from the PIC16C67T-04I/L's 33 I/O lines for relay switching of mains/battery, LED status indication, and alarm buzzer drivers. The hardware USART supports RS-232/RS-485 communication with the host computer for status reporting, and the SSP port can interface with SPI battery-monitoring AFE chips. Industrial -40C to +85C tolerance tolerates equipment-room and outdoor-cabinet installations. The watchdog timer with on-chip RC oscillator prevents firmware lockups during brown-out and power-transfer events, which are critical for UPS behavior. Pair the device with a 5 V linear regulator downstream of the battery rail, an optoisolated mains-zero-cross detector, and a buzzer/LED status panel. The OTP cost advantage suits high-volume UPS production runs.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16C67T-04I/L — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16C67-04I/L | PIC16C66T-20I/SO | PIC16C65BT-04I/PT | PIC16C662T-20E/L | PIC16C64A-04I/L |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PLCC-44 (L) | PLCC-44 (L) - same | PLCC-44 (L) - same | PLCC-44 (L) - same | PLCC-44 (L) - same | PLCC-44 (L) - same |
| Max Clock Speed | 4 MHz | 4 MHz | 20 MHz | 4 MHz | 20 MHz | 4 MHz |
| Parallel Slave Port | Yes | Yes | No | No | No | No |
| USART | Yes | Yes | Yes | Yes | Yes | Yes |
| SSP (SPI/I2C) | Yes | Yes | Yes | Yes | Yes | No |
| Temperature Range | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Principais diferenciais
- Built-in 8-bit Parallel Slave Port for host-co-processor communication (vs PIC16C66T-20I/SO)
- Full 33 I/O and 14 KB OTP at the 4 MHz '04' speed grade (vs PIC16C64A-04I/L)
- OTP cost advantage over Flash PIC16F877-04I/L for fixed-firmware production (vs PIC16F877-04I/L (Flash drop-in))
Notas de projeto
The PIC16C67T-04I/L requires a stable 4.5 V to 5.5 V supply rail. Add a 100 nF decoupling capacitor close to each Vdd/Vss pair (the device has three pairs on PLCC-44: pins 10/9, 20/19, 39/38). Bulk capacitance of at least 10 uF near the IC smooths motor-relay transients in industrial-control boards. Source: Microchip PIC16C6x hardware design checklist.
Keep the 4 MHz crystal or ceramic resonator within 1 cm of OSC1/OSC2 (pins 41/40) and route it over a continuous ground plane to minimize EMI pickup. Place the MCLR pull-up resistor (typically 10 kohm) close to pin 42 with a short trace to avoid spurious resets. Avoid running high-current relay traces parallel to the oscillator traces.
The PIC16C67T-04I/L is OTP, so firmware cannot be erased and reused. Always validate firmware on a PIC16F877-04I/L (Flash, same PLCC-44 footprint) or a PIC16C67 with windowed package before committing to OTP production. Confusing '04' (4 MHz speed grade) with '20' (20 MHz grade) is a common BOM error; verify the full suffix -04I before ordering. Source: Microchip PIC16C6x ordering guide.
Route the 33 I/O lines as short and direct as possible to minimize EMI, and group high-current LED sink/source lines (up to 25 mA each) on adjacent port pins to simplify trace width calculations. The parallel slave port pins (RD0-RD7, RE0-RE2) should be length-matched if used for high-speed external bus communication. Source: PIC16C67 datasheet layout section.
Informações de conformidade
RoHS and REACH compliance not stated in the provided distributor listings. The PIC16C67T-04I/L is an OTP legacy part and was originally released before RoHS became mandatory; some industrial-graded OTP PIC16C parts are available in lead-free reflow-suitable packages, but this must be verified against the manufacturer's product-page ordering code (e.g. 'LF' suffix). AEC-Q100 not applicable - this is a legacy industrial MCU.
