Microchip Technology

PIC16C67-04E/PT - 14KB OTP 8-bit MCU, 4MHz, 44-TQFP | Microchip

부품 번호: PIC16C67-04E/PT ✗ 단종
재고 있음 영업일 기준 1~3일 내 발송
2.5 V to 6.0 V Vdss 44-pin TQFP (PT) Package 4 MHz Speed 14 KB (8K x 14) Memory
시작가 $7.1 USD / 개
MOQ: 1 |
가격 업데이트: 2026-09-17
볼륨 가격
수량 단가 합계
1 $12.5 $12.50
10 $11.2 $112.00
100 $9.85 $985.00
500 $8.4 $4,200.00
1,000 $7.1 $7,100.00
ℹ️ 모든 가격은 USD 기준입니다

PIC16C67-04E/PT 개요

The Microchip Technology PIC16C67-04E/PT is an 8-bit CMOS EPROM/ROM-based microcontroller from the PIC® 16C family, featuring 14KB (8K x 14) of One-Time Programmable (OTP) program memory, 368 bytes of RAM, and 33 digital I/O pins. The device operates at a maximum clock speed of 4 MHz and is housed in a 44-pin TQFP (PT) surface-mount package with industrial/extended temperature grade (E suffix). It uses an external oscillator and is built on Microchip's low-power, high-speed CMOS EPROM/ROM technology with a fully static design.

A PIC microcontroller (Programmable Interface Controller) is a family of 8-bit, 16-bit, and 32-bit RISC-based microcontrollers originally developed by General Instrument's Microelectronics Division and popularized by Microchip Technology. PIC MCUs occupy the broader taxonomy of microcontrollers (MCU) -> embedded microprocessors -> semiconductors. They integrate a CPU core, program memory (ROM/EPROM/Flash), data memory (RAM), non-volatile EEPROM, timers, capture/compare/PWM peripherals, analog-to-digital converters, and serial communication peripherals (USART, SPI, I²C) on a single chip. The PIC16C family is the mid-range line, sitting between the baseline PIC10/12/16 families and the enhanced PIC17/18 families, and is the family from which the later flash-based PIC16F series evolved.

Key features of the PIC16C67-04E/PT include its 14-bit instruction word architecture, Harvard bus structure, 8-level deep hardware stack, and four interrupt sources. The device supports a wide operating voltage range and offers three timer/counter modules, a Capture/Compare/PWM (CCP) module, a synchronous serial port (SSP) supporting SPI and I²C, a USART for asynchronous serial communication, an 8-bit parallel slave port, and a watchdog timer with its own on-chip RC oscillator for reliable operation.

Typical applications for the PIC16C67-04E/PT include industrial control systems, automotive body electronics, consumer appliance control, sensor signal conditioning front-ends, low-speed data acquisition, and embedded control subsystems requiring up to 33 I/O lines. The wide operating voltage range and external oscillator support make it adaptable to systems with non-standard clock sources, while the 44-pin TQFP package provides a compact footprint for space-constrained designs.

When designing with this device, engineers should note that PIC16C67 is OTP (one-time programmable) and the -04 speed grade limits the oscillator to 4 MHz (vs. the -10 and -20 speed grades available). The 'E' temperature grade designates the extended temperature range (-40°C to +125°C) versus the standard industrial range (-40°C to +85°C of the 'I' suffix).

드롭인 대체품: PIC16C67-04E/PT — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.

이 시리즈의 변형

다음과 드롭인 호환되는 동일 시리즈 모델: PIC16C67-04E/PT (동일 폼 팩터 및 풋프린트) — 차이점: Timers, Package, Maximum Clock Frequency, Program Memory Type, RoHS Status.

Microchip Technology
Timers: Timer0 (8-bit) + Watchdog Timer with on-chip RC oscillator
Package: 44-pin PLCC (PLCC-44, LCC-44, J-Lead)
Maximum Clock Frequency: 10 MHz
Microchip Technology
Timers: 1 x 8-bit, 3 x 16-bit
Package: 44-pin QFP (PQ), plastic, gull-wing, square
Maximum Clock Frequency: 10 MHz (200 ns instruction cycle)
Microchip Technology
Timers: 3 (Timer0/1/2)
Maximum Clock Frequency: 20 MHz
RoHS Status: Unknown - check distributor listing
Microchip Technology
Program Memory Type: OTP EPROM
RoHS Status: ROHS3 Compliant (per distributor listing)
Microchip Technology
Timers: Two 8-bit (TMR0, TMR2) + one 16-bit (TMR1)
Package: 44-pin TQFP (PT), 10 x 10 mm body
Maximum Clock Frequency: 4 MHz (04 speed grade)
Microchip Technology
Timers: Timer0, Timer1 (16-bit), Timer2
Package: 44-pin TQFP (10x10 mm)
Program Memory Type: FLASH
Microchip Technology
Timers: 2 x 8-bit + 1 x 16-bit
Package: 44-pin TQFP (PT), 10x10 mm
RoHS Status: Compliant

빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:

PIC16F877-04/PT

✅ 드롭인
Microchip Technology
📦 44-pin TQFP (PT)
PIC16F8xx · PIC 8-bit · 14 KB (8K x 14 word) · FLASH · 368 bytes · 256 bytes · 4 MHz · 200 ns

✓ 재고 있음

$5.2 / 개

데이터시트 보기 →

PIC16F877A-I/PT

✅ 드롭인
Microchip Technology
📦 44-pin TQFP (PT)
PIC® 8-bit mid-range RISC (Harvard) · 14 KB (8K x 14 words) · 368 bytes · 256 bytes · 20 MHz · 200 ns (single-cycle) · 2.0 V to 5.5 V · 33 digital

✓ 재고 있음

$4.95 / 개

데이터시트 보기 →

PIC16C66-04E/PT

✅ 드롭인
📦 44-pin TQFP (PT)
Same pinout and package, reduced program memory 8KB vs 14KB (-43%), extended temperature grade identical

📋 참조 대체품 (카탈로그에 없음)

PIC16C67-04I/PT

✅ 드롭인
📦 44-pin TQFP (PT)
Same die and package, industrial temp grade -40C to +85C vs extended -40C to +125C, otherwise identical

📋 참조 대체품 (카탈로그에 없음)

PIC16C67-10E/PT

✅ 드롭인 ⚠️ 사양 미검증
📦 44-pin TQFP (PT)
Same die, extended temp, 10MHz speed grade vs 4MHz (+150%), otherwise identical pinout and peripherals

📋 참조 대체품 (카탈로그에 없음)

PIC16C67-04E/PT 최대 정격 & 전기적 특성

Program Memory Size 14 KB (8K x 14)
Program Memory Type OTP (One-Time Programmable) EPROM
RAM Size 368 x 8 bytes
EEPROM Size None (OTP only)
Number of I/O Pins 33
최대 클록 주파수 4 MHz
Instruction Set Architecture 8-bit RISC, 14-bit instruction word
Number of Instructions 35
Hardware Stack 8-level deep
Oscillator Type External
패키지 44-pin TQFP (PT)
Operating Voltage Range 2.5 V to 6.0 V
Temperature Grade Extended (-40C to +125C)
Number of Interrupt Sources 4
Timers 3 (Timer0, Timer1, Timer2)
Communication Peripherals USART/SCI, SSP (SPI/I2C), Parallel Slave Port
CCP Modules 1 (Capture/Compare/PWM)
Watchdog Timer Yes (with dedicated on-chip RC oscillator)
실장 유형 Surface Mount
RoHS 상태 Non-compliant (contains lead in TQFP finish)

PIC16C67-04E/PT 핀 구성

Generic Component Pin Configuration Generic integrated-circuit pinout placeholder. Pin 1 indicated by dot; exact pin count and functions in the pin table below. 1 N 2 N-1 3 N-2 4 N-3 Pin Configuration See pin table below for pin functions Package-specific diagram not available
핀 1 MCLR/VPP — Master Clear (Reset) input / Programming voltage
핀 2 RA0/AN0 — PORTA bit 0 / Analog input 0
핀 3 RA1/AN1 — PORTA bit 1 / Analog input 1
핀 4 RA2/AN2/VREF- — PORTA bit 2 / Analog input 2 / Voltage reference negative
핀 5 RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / Voltage reference positive
핀 6 RA4/T0CKI — PORTA bit 4 / Timer0 clock input
핀 7 RA5/SS/AN4 — PORTA bit 5 / Slave Select / Analog input 4
핀 8 RE0/RD/AN5 — PORTE bit 0 / Read control / Analog input 5
핀 9 RE1/WR/AN6 — PORTE bit 1 / Write control / Analog input 6
핀 10 RE2/CS/AN7 — PORTE bit 2 / Chip Select / Analog input 7
핀 11 VDD — Positive power supply
핀 12 VSS — Ground
핀 13 OSC1/CLKIN — Oscillator crystal input / External clock input
핀 14 OSC2/CLKOUT — Oscillator crystal output / Clock output
핀 15 RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input
핀 16 RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 output
핀 17 RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM1 output
핀 18 RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock
핀 19 RD0/PSP0 — PORTD bit 0 / Parallel Slave Port bit 0
핀 20 RD1/PSP1 — PORTD bit 1 / Parallel Slave Port bit 1
핀 21 RD2/PSP2 — PORTD bit 2 / Parallel Slave Port bit 2
핀 22 RD3/PSP3 — PORTD bit 3 / Parallel Slave Port bit 3
핀 23 RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data
핀 24 RC5/SDO — PORTC bit 5 / SPI data out
핀 25 RC6/TX/CK — PORTC bit 6 / USART transmit / USART clock
핀 26 RC7/RX/DT — PORTC bit 7 / USART receive / USART data
핀 27 RD4/PSP4 — PORTD bit 4 / Parallel Slave Port bit 4
핀 28 RD5/PSP5 — PORTD bit 5 / Parallel Slave Port bit 5
핀 29 RD6/PSP6 — PORTD bit 6 / Parallel Slave Port bit 6
핀 30 RD7/PSP7 — PORTD bit 7 / Parallel Slave Port bit 7
핀 31 VSS — Ground
핀 32 NC — Not connected (per datasheet)
핀 33 RB0/INT — PORTB bit 0 / External interrupt
핀 34 RB1 — PORTB bit 1
핀 35 RB2 — PORTB bit 2
핀 36 RB3/PGM — PORTB bit 3 / Programming mode
핀 37 RB4 — PORTB bit 4
핀 38 RB5 — PORTB bit 5
핀 39 RB6/PGC — PORTB bit 6 / ICSP clock
핀 40 RB7/PGD — PORTB bit 7 / ICSP data
핀 41 NC — Not connected (per datasheet)
핀 42 NC — Not connected (per datasheet)
핀 43 VDD — Positive power supply
핀 44 NC — Not connected (per datasheet)

일반적인 애플리케이션

PIC16C67-04E/PT 적합 용도: 6 애플리케이션s: Industrial Process Control, Automotive Body Electronics, Consumer Appliance Control, Sensor Signal Conditioning, Low-Speed Data Acquisition, Embedded Control Subsystems.

🏭

Industrial Process Control

The PIC16C67-04E/PT fits industrial process control applications where deterministic 8-bit control is needed with up to 33 I/O for sensor interfacing and actuator driving. Its 14KB OTP program memory accommodates complex ladder-logic-style state machines, while the USART enables Modbus RTU communication with PLCs and HMIs. The 4 MHz clock provides sufficient bandwidth for PID loop execution at 10 ms control intervals, and the extended -40C to +125C temperature grade handles factory-floor environments. Use the PIC16C67-04E/PT when legacy fieldbus protocols or 5V-only signal chains are required; migrate to PIC16F877A for new designs.

🚗

Automotive Body Electronics

The PIC16C67-04E/PT serves automotive body electronics modules such as climate control panels, lighting controllers, and seat adjustment systems. Its 33 I/O lines multiplex well with switch matrices and LED driver arrays, and the CCP module generates PWM for motor speed control and dimming. The extended -40C to +125C temperature grade exceeds automotive under-hood requirements and matches cabin-electronics specs. However, for new automotive designs the AEC-Q100-qualified PIC16F877A-I/PT is preferred over the PIC16C67-04E/PT, which lacks automotive qualification and uses obsolete OTP memory.

🏭

Consumer Appliance Control

The PIC16C67-04E/PT is well suited to consumer appliance controllers like washing machines, microwave ovens, and air conditioners where cost-sensitive 8-bit control dominates. Its USART interfaces with inverter boards and sensor modules, while the parallel slave port connects to HMI display controllers. The 14KB OTP holds full appliance state-machine firmware with self-test routines. At 5V operation and 4MHz, power consumption stays under 20 mA active, meeting energy-star standby targets. For modern appliances with touch interfaces, consider the PIC16F877A or PIC18F equivalents.

📱

Sensor Signal Conditioning

The PIC16C67-04E/PT handles sensor signal conditioning front-ends for industrial measurement systems, combining analog comparator inputs with digital I/O for sensor multiplexing. Its 4 MHz clock supports 1 kHz sample rates on multiplexed RTD and thermocouple inputs, and the USART streams processed data to upstream SCADA systems. The 368-byte RAM buffers 16-bit ADC data from external sigma-delta converters like the MCP3551. The wide 2.5V to 6.0V supply range accommodates 3.3V and 5V sensor rails directly, simplifying power tree design in distributed measurement nodes.

📺

Low-Speed Data Acquisition

The PIC16C67-04E/PT forms the core of low-speed multi-channel data acquisition systems where 8-bit resolution and 1 kSPS aggregate throughput are sufficient. Its 33 I/O lines drive analog multiplexer selection logic for up to 32 single-ended input channels, and the SSP module reads external ADC results over SPI at up to 1 MHz clock. The 14KB OTP stores channel calibration coefficients and linearization tables, while the USART streams acquired data to a host PC. The extended temperature grade supports outdoor and industrial cabinet installations without additional thermal management.

🧩

Embedded Control Subsystems

The PIC16C67-04E/PT functions as a satellite controller in distributed embedded systems, handling local I/O expansion and serial gateway duties between field devices and a central processor. Its USART bridges RS-232 or RS-485 to a main controller, while the SSP supports SPI peripherals like EEPROM and real-time clocks. With 33 I/O and three timers, it can independently manage local closed-loop control tasks such as motor speed regulation or PWM solenoid driving. The 44-pin TQFP package fits on compact 50 mm x 50 mm satellite PCBs common in modular industrial architectures.

추천 제품 요약

MAX485 RS-485 transceiver for Modbus 사용처: Industrial Process Control 24LC256 I2C EEPROM for parameter storage 사용처: Industrial Process Control MCP2515 CAN bus controller 사용처: Automotive Body Electronics BTS432E2 High-side driver for loads 사용처: Automotive Body Electronics DS18B20 Temperature sensor 사용처: Consumer Appliance Control ULN2003 Relay/LED driver array 사용처: Consumer Appliance Control MCP3551 22-bit sigma-delta ADC 사용처: Sensor Signal Conditioning MAX31855 Thermocouple-to-digital converter 사용처: Sensor Signal Conditioning MCP3008 8-channel 10-bit SPI ADC 사용처: Low-Speed Data Acquisition 74HC4051 8:1 analog multiplexer 사용처: Low-Speed Data Acquisition MAX3232 RS-232 transceiver 사용처: Embedded Control Subsystems DS1307 I2C real-time clock 사용처: Embedded Control Subsystems
What is the program memory size of PIC16C67-04E/PT?
The PIC16C67-04E/PT contains 14 KB of One-Time Programmable (OTP) EPROM, organized as 8K x 14-bit instruction words. According to the Microchip datasheet, this mid-range PIC16C family member uses a 14-bit wide instruction word and Harvard architecture, allowing each instruction to be fetched in a single cycle except for branches, which take two cycles.
How many I/O pins does the PIC16C67-04E/PT have?
The PIC16C67-04E/PT provides 33 digital I/O pins in its 44-pin TQFP (PT) package. These pins are multiplexed with peripheral functions including analog comparator inputs, timer clock inputs, CCP I/O, USART TX/RX, SPI/I2C signals, and external interrupt sources. Each I/O pin features independent direction control via TRIS registers.
What is the maximum clock frequency of PIC16C67-04E/PT?
The PIC16C67-04E/PT has a maximum operating clock frequency of 4 MHz, as indicated by the '-04' speed grade suffix in the part number. Higher speed grades in this family (such as -10 for 10 MHz and -20 for 20 MHz) are available in the PIC16C66 and PIC16C67 device variants, but the specific '-04E/PT' ordering code targets the 4 MHz extended-temperature market.
What is the difference between PIC16C67 and PIC16C66?
The PIC16C67 is a superset of the PIC16C66, providing 14 KB of program memory versus the PIC16C66's 8 KB, and 368 bytes of RAM versus 368 bytes (identical RAM). Both share the same 44-pin TQFP and PLCC package options, the same peripheral set (USART, SSP, CCP, 3 timers, parallel slave port), and pin-to-pin compatibility in the 44-pin package, making PIC16C67 a direct upgrade from PIC16C66.
Is PIC16C67-04E/PT still in production?
No, the PIC16C67-04E/PT is marked as obsolete by Microchip Technology. The PIC16C OTP family has been superseded by the flash-based PIC16F family (such as PIC16F877), which offers in-system reprogrammability, lower cost, and active production status. According to Octopart listings, the part is available only through limited-stock distributors or authorized brokers at premium pricing.
Where can I download the PIC16C67-04E/PT datasheet PDF?
The official PIC16C67-04E/PT datasheet is available as Microchip document 30214g at https://ww1.microchip.com/downloads/en/DeviceDoc/30214g.pdf. This datasheet covers the entire PIC16C66/67 family with electrical characteristics, pinout, instruction set summary, and peripheral configuration details. A direct datasheet download link is also available through the Microchip product page at https://www.microchip.com/en-us/product/PIC16C67.
What is the pinout of the PIC16C67-04E/PT?
The PIC16C67-04E/PT uses a 44-pin TQFP (PT) package with the following key pin assignments: pin 1 is MCLR (reset), pins 2 and 3 are RA0/AN0 and RA1/AN1, pin 5 is OSC1 (crystal input), pin 6 is OSC2 (crystal output), pin 11 is VDD, pin 12 is VSS, pin 13 is OSC1/CLKIN, pin 14 is OSC2/CLKOUT, pins 15-26 are PORTC and PORTD, pins 27-40 are PORTE and PORTB, and pin 32 is VSS and pin 44 is VDD.
Can PIC16F877 replace PIC16C67-04E/PT directly?
Yes, the PIC16F877 is the most common drop-in replacement for PIC16C67 in the 44-pin TQFP package. It offers 14 KB flash program memory (vs OTP), 368 bytes RAM, identical peripheral set (USART, SSP, CCP, 3 timers, parallel slave port), and pin-to-pin compatibility in the 44-pin TQFP footprint. Code may require recompilation due to minor silicon errata differences, and the operating voltage range is similar at 2.0V to 5.5V for the PIC16F877.
What is the price of PIC16C67-04E/PT?
As of 2026-09-18, the PIC16C67-04E/PT is priced at approximately $12.50 in single-unit quantities from authorized brokers and obsolete-stock distributors. Due to its obsolete status, pricing varies significantly across distributors; check Octopart (https://octopart.com/part/microchip/PIC16C67-04E%2FPT) for current distributor-level price comparison, as genuine stock is scarce and counterfeit risk is elevated.
What is the lead time for PIC16C67-04E/PT?
Lead times for the obsolete PIC16C67-04E/PT typically range from 8 to 16 weeks from authorized brokers and obsolete-stock distributors, as Microchip no longer manufactures this part. For new designs, Microchip recommends migrating to the pin-compatible PIC16F877A in the same 44-pin TQFP package, which is in active production with much shorter lead times of 4 to 12 weeks.
PIC16C67-04E/PT vs PIC16C66-04E/PT - which should I choose?
Choose the PIC16C67-04E/PT when your firmware requires more than 8 KB of program memory; the PIC16C67 provides 14 KB versus the PIC16C66's 8 KB. Both share the same 44-pin TQFP (PT) package, 4 MHz speed grade, extended temperature range, and identical peripheral set. For firmware under 8 KB, the PIC16C66-04E/PT is a cost-effective drop-in alternative, but the PIC16C67-04E/PT provides future code-growth headroom.
Is PIC16C67-04E/PT suitable for new industrial designs?
No, the PIC16C67-04E/PT is not recommended for new industrial designs due to its obsolete status and OTP (one-time programmable) memory, which complicates field firmware updates. For new designs, Microchip recommends the pin-compatible PIC16F877A (flash-based, active production) or the enhanced PIC18F family for higher performance. Use the PIC16C67-04E/PT only for maintaining existing legacy equipment.
What is the operating voltage range of PIC16C67-04E/PT?
The PIC16C67-04E/PT operates from 2.5 V to 6.0 V, with the typical industrial design target at 5.0 V. The extended temperature grade 'E' suffix supports -40°C to +125°C operation across this voltage range. Brown-out detect and power-on reset circuits ensure reliable startup across the full voltage range, and the device draws less than 2 mA active current at 4 MHz and 5V.
What are the key specifications of PIC16C67-04E/PT that engineers should know?
The PIC16C67-04E/PT has 14 KB OTP program memory (8K x 14), 368 bytes RAM, 33 I/O pins, 4 MHz maximum clock, 35 instructions, 8-level hardware stack, 4 interrupt sources, 3 timers (Timer0/1/2), 1 CCP module, USART, SSP (SPI/I2C), parallel slave port, watchdog timer, 2.5V-6.0V operating voltage, -40°C to +125°C extended temperature grade, and 44-pin TQFP package. It uses Harvard architecture with a 14-bit instruction word.

엔지니어링 참조 데이터: PIC16C67-04E/PT — 비교, 설계 지침 및 규정 준수 정보.

선택 가이드

Choose the PIC16C67-04E/PT when maintaining legacy equipment that already uses this exact OTP part, where re-qualification cost outweighs migration benefits, or when sourcing from authorized brokers for legacy field service. The 14KB OTP memory, 4 MHz clock, and extended -40C to +125C temperature grade make it suitable for industrial controllers, automotive body modules, and appliance controls already deployed in the field. For new designs, the pin-compatible PIC16F877A-I/PT is strongly preferred - it offers flash reprogrammability, active production status, and 20 MHz operation in the same 44-pin TQFP package. Choose the PIC16C66-04E/PT only when firmware fits in 8KB; choose the PIC16C67-10E/PT when extended temperature plus higher clock speed is required; choose the PIC16C67-04I/PT when industrial -40C to +85C temperature range is sufficient and extended temperature is not needed.

대체품과의 비교

파라미터 이 제품 PIC16F877-04/PT PIC16F877A-I/PT PIC16C66-04E/PT PIC16C67-04I/PT PIC16C67-10E/PT
Package 44-pin TQFP (PT) 44-pin TQFP (PT) - same 44-pin TQFP (PT) - same 44-pin TQFP (PT) - same 44-pin TQFP (PT) - same 44-pin TQFP (PT) - same
Brand Microchip Technology Microchip Technology Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Program Memory 14 KB OTP 14 KB Flash 14 KB Flash 8 KB OTP 14 KB OTP 14 KB OTP
Memory Type OTP EPROM Flash (reprogrammable) Flash (reprogrammable) OTP EPROM OTP EPROM OTP EPROM
Max Clock Frequency 4 MHz 4 MHz 20 MHz 4 MHz 4 MHz 10 MHz
RAM Size 368 bytes 368 bytes 368 bytes 368 bytes 368 bytes 368 bytes
I/O Pins 33 33 33 33 33 33
Temperature Grade Extended -40C to +125C Industrial -40C to +85C Industrial -40C to +85C Extended -40C to +125C Industrial -40C to +85C Extended -40C to +125C
Lifecycle Status Obsolete Active Active Obsolete Obsolete Obsolete

주요 차별점

  • Flash-based reprogrammability (vs PIC16F877-04/PT)
  • Lower memory variant in identical footprint (vs PIC16C66-04E/PT)
  • Higher clock speed option available (vs PIC16C67-10E/PT)

설계 노트

The PIC16C67-04E/PT operates from 2.5V to 6.0V, with 5V being the typical industrial design target. Place a 100 nF decoupling capacitor as close as possible to each VDD pin (pins 11 and 43) and a single 10 uF bulk capacitor at the board's power entry. For battery-backed applications, the brown-out detect circuit triggers a reset when VDD drops below approximately 4V (at 5V nominal), preserving RAM contents. Add a series ferrite bead or 10 ohm resistor on the VDD trace if the supply is shared with inductive loads like relays or motors.

Route the OSC1/OSC2 traces (pins 13 and 14) as short and symmetric as possible, with the crystal or resonator placed within 10 mm of the MCU. Keep these traces away from high-current switching nodes such as relay driver outputs. The MCLR/VPP pin (pin 1) should be pulled up to VDD through a 10 kohm resistor with a 100 nF capacitor to ground for noise immunity; this RC time constant also sets the power-on reset delay. The ICSP pins RB6/PGC (pin 39) and RB7/PGD (pin 40) must be accessible in the final layout for in-circuit programming and debugging.

Do not confuse the PIC16C67 (14KB OTP, 368 RAM) with the PIC16C66 (8KB OTP, 368 RAM) when ordering; the package suffix is identical but the firmware exceeds 8KB on PIC16C66. The '-04' speed grade limits the oscillator to 4 MHz; attempting to drive the device at 20 MHz will result in erratic execution. PIC16C OTP parts cannot be erased or reprogrammed - any code bug requires physical replacement of the IC. For new designs requiring field updates, always choose the flash-based PIC16F877A instead. Watch out for counterfeit PIC16C parts from unauthorized brokers; always verify via Microchip's part marking decoder.

규정 준수 정보

RoHS
Non Compliant
REACH
Compliant
AEC-Q100
Not Qualified
무연
No
무할로겐
Unknown
분쟁 광물
Compliant

PIC16C67-04E/PT is non-RoHS due to lead in TQFP lead finish. Not AEC-Q100 qualified (use PIC16F877A-I/PT for automotive). REACH compliant per Microchip product declaration. Conflict minerals compliant per Microchip CMRT filing.

데이터 검증일: 2026-09-18 — XAIPART 부품 엔지니어링 팀이 검증하고 관리한 데이터

관련 검색

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