PIC16C67T-04I/PT - 8-Bit OTP MCU 14KB EPROM 33 I/O | Microchip
MPN: PIC16C67T-04I/PT ✗ Cuối đờiPIC16C67T-04I/PT Tóm tắt
A PIC microcontroller (Programmable Interface Controller) is a family of 8-bit, 16-bit, and 32-bit RISC microcontrollers built on a Harvard architecture with separate program and data memory buses, enabling single-cycle instruction execution and deterministic interrupt response. Within that taxonomy, the PIC16C sub-family is the original OTP/EPROM-based mid-range line, now largely replaced in new designs by flash-based PIC16F and PIC18 equivalents, but still widely deployed and serviced for legacy industrial systems.
Key features of the PIC16C67T-04I/PT include a 4 MHz maximum clock, three 8-bit and one 16-bit timer/counter offering capture/compare/PWM, an 8-channel 8-bit analog-to-digital converter, a USART for serial communication, an SSP module supporting SPI and I2C, and a programmable brown-out reset with power-on reset for robust supply supervision. The OTP EPROM enables one-time factory or in-circuit programming for low-cost high-volume deployments.
The PIC16C67 uses a 14-bit-wide program path and an 8-bit data path, giving the mid-range core its characteristic compactness while supporting direct, indirect, and relative addressing with hardware multiply assistance unavailable in baseline PIC cores. Thirty-three general-purpose I/O pins share package leads with peripheral functions, and the 44-pin TQFP exposes the full peripheral complement without port-sharing compromises.
Typical applications include industrial automation controllers, motor drive supervisory logic, white-goods and appliance control boards, automotive body electronics modules (in non-safety functions), sensor-signal conditioning front ends, and legacy embedded products where the PIC16 toolchain and existing firmware base must be preserved.
When designing with the PIC16C67T-04I/PT, note that OTP parts cannot be re-programmed for field firmware updates - if in-system reprogrammability is required, evaluate the flash-based PIC16F877 or PIC18F equivalents in the same 44-pin TQFP footprint. Verify oscillator start-up time across the full -40C to +85C range and ensure the in-circuit programming pins (RB6/RB7) remain accessible for factory programming.
Bộ thay thế dễ dàng lắp đặt cho PIC16C67T-04I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16C67T-04I/PT (cùng hình factor và footprint) — khác nhau ở Package, Program Memory Size, Core, Operating Temperature, Timers.
PIC16C67T-04/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C67-10I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C67-20/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C67-20I/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F877-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C67T-04I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16C (8-bit RISC, 14-bit instruction word) |
| Tần số xung maksimum | 4 MHz |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 14 KB (8K x 14 instructions) |
| Data RAM | 368 bytes |
| Data EEPROM | Not present |
| Supply Voltage (Vdd) | 5 V (operating) |
| I/O Pins | 33 |
| ADC | 8 channels x 8-bit |
| Timers | 3 x 8-bit + 1 x 16-bit Timer/Counter with CCP |
| Serial Interfaces | USART (SCI), SSP (SPI / I2C) |
| Brown-out Reset (BOR) | Programmable |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial, suffix I) |
| Hộp | 44-pin TQFP (10 x 10 mm) |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (per JEDEC J-STD-020) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16C67T-04I/PT
| Chân 1 | MCLR — Master Clear (reset) input, active low |
| Chân 2 | RA0/AN0 — Port A bit 0 / analog input 0 |
| Chân 3 | RA1/AN1 — Port A bit 1 / analog input 1 |
| Chân 4 | RA2/AN2 — Port A bit 2 / analog input 2 |
| Chân 5 | RA3/AN3/VREF — Port A bit 3 / analog input 3 / VREF+ |
| Chân 6 | RA4/T0CKI — Port A bit 4 / Timer 0 clock input |
| Chân 7 | RA5/AN4/SS — Port A bit 5 / analog input 4 / SPI slave select |
| Chân 8 | RE0/RD/AN5 — Port E bit 0 / parallel slave port read / analog input 5 |
| Chân 9 | RE1/WR/AN6 — Port E bit 1 / parallel slave port write / analog input 6 |
| Chân 10 | RE2/CS/AN7 — Port E bit 2 / parallel slave port chip select / analog input 7 |
| Chân 11 | VDD — Positive supply (5V) |
| Chân 12 | VSS — Ground (0V) |
| Chân 13 | OSC1/CLKIN — Oscillator input / external clock input |
| Chân 14 | OSC2/CLKOUT — Oscillator output / clock out |
| Chân 15 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer 1 oscillator output / Timer 1 clock input |
| Chân 16 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer 1 oscillator input / CCP2 |
| Chân 17 | RC2/CCP1 — Port C bit 2 / CCP1 |
| Chân 18 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Chân 19 | RD0/PSP0 — Port D bit 0 / parallel slave port bit 0 |
| Chân 20 | RD1/PSP1 — Port D bit 1 / parallel slave port bit 1 |
| Chân 21 | RD2/PSP2 — Port D bit 2 / parallel slave port bit 2 |
| Chân 22 | RD3/PSP3 — Port D bit 3 / parallel slave port bit 3 |
| Chân 23 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Chân 24 | RC5/SDO — Port C bit 5 / SPI data out |
| Chân 25 | RC6/TX/CK — Port C bit 6 / USART TX / USART clock |
| Chân 26 | RC7/RX/DT — Port C bit 7 / USART RX / USART data |
| Chân 27 | RD4/PSP4 — Port D bit 4 / parallel slave port bit 4 |
| Chân 28 | RD5/PSP5 — Port D bit 5 / parallel slave port bit 5 |
| Chân 29 | RD6/PSP6 — Port D bit 6 / parallel slave port bit 6 |
| Chân 30 | RD7/PSP7 — Port D bit 7 / parallel slave port bit 7 |
| Chân 31 | VSS — Ground (0V) |
| Chân 32 | VDD — Positive supply (5V) |
| Chân 33 | RB0/INT — Port B bit 0 / external interrupt |
| Chân 34 | RB1 — Port B bit 1 |
| Chân 35 | RB2 — Port B bit 2 |
| Chân 36 | RB3 — Port B bit 3 |
| Chân 37 | RB4 — Port B bit 4 |
| Chân 38 | RB5 — Port B bit 5 |
| Chân 39 | RB6/PGC — Port B bit 6 / in-circuit programming clock |
| Chân 40 | RB7/PGD — Port B bit 7 / in-circuit programming data |
| Chân 41 | NC — Not connected (per datasheet) |
| Chân 42 | NC — Not connected (per datasheet) |
| Chân 43 | NC — Not connected (per datasheet) |
| Chân 44 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC16C67T-04I/PT phù hợp cho 6 Áp dụngs: Industrial Automation Controllers, Motor Drive Supervisory Logic, Appliance Control Boards, Automotive Body Electronics Modules, Sensor Signal Conditioning Front Ends, Legacy Embedded System Sustainment.
Industrial Automation Controllers
The PIC16C67T-04I/PT fits industrial automation controllers because its 33 I/O pins expose the full mid-range peripheral complement - 8-channel 8-bit ADC for analog sensor inputs, USART for RS-232/RS-485 fieldbus bridging, and SSP for SPI/I2C sensor networks - all on a deterministic single-cycle RISC core that delivers predictable interrupt latency for closed-loop control. The -40C to +85C industrial temperature grade covers factory floor thermal envelopes. At 4 MHz with 14 KB OTP, the part suits fixed-function controller firmware that never requires field updates.
Được đề xuất
Motor Drive Supervisory Logic
The PIC16C67T-04I/PT suits motor drive supervisory logic because its 14-bit instruction core with hardware CCP (Capture/Compare/PWM) can generate timing-critical gate-drive signals while the 8-channel ADC samples current/voltage feedback at deterministic sample rates. The PIC16C mid-range architecture's single-cycle interrupt response is essential for current-loop protection. Industrial temperature grade and the deterministic Harvard bus handle the high-EMI environment near inverter switching stages when proper PCB layout is applied.
Được đề xuất
Appliance Control Boards
The PIC16C67T-04I/PT fits appliance control boards (washing machines, dishwashers, HVAC controllers) where OTP EPROM and the low-cost 44-pin TQFP packaging suit high-volume white-goods production. The PIC mid-range core's compact instruction set and 4 MHz operation keep power consumption low, while 33 I/O pins connect to user-interface keypads, LED/LCD indicators, relay drivers, and triac optocouplers. Industrial temperature grade handles under-cabinet and utility-room environments.
Được đề xuất
Automotive Body Electronics Modules
The PIC16C67T-04I/PT is used in non-safety automotive body electronics such as interior lighting controllers, seat-position memory modules, and HVAC blend-door actuators where 33 I/O pins, USART for LIN-bus-like communication, and the -40C to +85C industrial temperature window match the under-dash thermal envelope. Note that the I-suffix is NOT AEC-Q100 qualified - for safety-critical applications (ABS, airbag, engine ECU), use AEC-Q100-qualified PIC18F or dsPIC33 equivalents. The OTP architecture is acceptable for vehicle-internal fixed-function modules.
Được đề xuất
Sensor Signal Conditioning Front Ends
The PIC16C67T-04I/PT serves sensor signal-conditioning front ends where the 8-channel 8-bit ADC multiplexes multiple analog sensor inputs (temperature, pressure, humidity, light) and the SSP module bridges to a host processor via SPI or I2C. The 14-bit instruction word and 35-instruction RISC set keep code density high for linearization and digital-filtering routines in the 14 KB OTP memory. Industrial temperature grade covers outdoor and process-control environments.
Được đề xuất
Legacy Embedded System Sustainment
The PIC16C67T-04I/PT is the preferred part for sustainment of legacy embedded products whose firmware base, PCB layout, and PIC16 toolchain were designed around the C67 mid-range core. Engineers maintaining these systems use the part's NRND status to plan phased migration: keep the C67 in production modules while qualifying the flash-based PIC16F877-I/PT for the next product revision. The TQFP-44 footprint remains stable across the migration, protecting the existing PCB investment and BOM line.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C67T-04I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16C67T-04/PT | PIC16C67-10I/PT | PIC16C67-20/PT | PIC16F877-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP (PT, 10x10 mm) | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same |
| Program Memory Type | OTP EPROM 14 KB | OTP EPROM 14 KB - same | OTP EPROM 14 KB - same | OTP EPROM 14 KB - same | Flash 8 KB (re-programmable) |
| Maximum Clock | 4 MHz | 4 MHz - same | 10 MHz (+150%) | 20 MHz (+400%) | 20 MHz (+400%) |
| Temperature Grade | Industrial -40C to +85C | Commercial 0C to +70C | Industrial -40C to +85C - same | Commercial 0C to +70C | Industrial -40C to +85C - same |
| Data EEPROM | Not present | Not present - same | Not present - same | Not present - same | 256 bytes on-chip EEPROM |
| I/O Pins | 33 | 33 - same | 33 - same | 33 - same | 33 - same |
| Lifecycle Status | NRND (Not Recommended for New Designs) | NRND | NRND | NRND | Active |
| RoHS Compliance | Compliant | Compliant | Compliant | Compliant | Compliant |
Bảo phân biệt quan trọng
- Industrial temperature grade in the same TQFP-44 footprint (vsPIC16C67T-04/PT)
- Flash-based firmware update capability vs OTP (vsPIC16F877-I/PT)
- Lower clock-speed variant with full pin compatibility (vsPIC16C67-10I/PT)
Ghi chú thiết kế
The PIC16C67T-04I/PT uses OTP (One-Time Programmable) EPROM for program memory, meaning each device can be programmed only once and CANNOT be erased. If the firmware requires field updates or in-system reprogramming, evaluate the flash-based PIC16F877-I/PT in the same 44-pin TQFP (PT) package as a direct replacement. For development, use a windowed ceramic package (e.g., PIC16C67-04/JW) for UV erasure cycles during code iteration.
Place the MCLR pull-up resistor (typically 10 kohm) and a 0.1 uF decoupling capacitor as close to the MCLR pin (pin 1) as possible to ensure reliable brown-out reset behavior. Add a 0.1 uF ceramic decoupling capacitor on each VDD pin (pin 11 and pin 32), with the loop area kept to a minimum. The ICSP clock and data pins (RB6/PGC pin 39, RB7/PGD pin 40) must be accessible for factory programming - do not load them with heavy capacitance or pull-downs that exceed the in-circuit programming specification.
Estimated: At VDD = 5V and 4 MHz clock, the PIC16C67T-04I/PT typical operating current is approximately 5-10 mA with all peripherals active, giving a power dissipation of roughly 25-50 mW. The supply rail must be decoupled with at least 10 uF bulk + 0.1 uF ceramic at the device, and a power-on reset / brown-out reset configuration matching the supply rise time must be programmed into the CONFIG register to avoid lockup during slow-rising 5V rails (typical in industrial control systems).
Oscillator layout for the PIC16C67T-04I/PT must follow the Microchip PIC16C6X hardware design note: keep the crystal (or ceramic resonator) and load capacitors within 5 mm of OSC1 (pin 13) and OSC2 (pin 14), and guard the oscillator traces with a ground ring to prevent injection of switching noise from nearby relays or triac drives. For high-noise industrial environments, use a four-pin crystal with built-in load capacitors rather than a two-pin discrete crystal.
Thông tin tuân thủ
RoHS compliant per Microchip product page. I-suffix indicates industrial temperature grade, NOT AEC-Q100 qualification - for automotive use, select AEC-Q100-qualified PIC18F or dsPIC33 equivalents. Lead-free TQFP packaging indicated by PT suffix.