PIC16LC74B-04/L - 8-Bit OTP MCU, 4MHz, 7KB | Microchip | Embedded
MPN: PIC16LC74B-04/L ⚠ آخری بار خریداریPIC16LC74B-04/L جائزہ
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (program + data), peripherals, and I/O onto one die. The PIC16LC74B belongs to the mid-range PIC architecture, sitting in the hierarchy: PIC16LC74B -> PIC16CXX family -> 8-bit PIC microcontroller -> MCU -> embedded processor -> integrated circuit. Mid-range PICs use a 14-bit instruction word and a Harvard architecture with separate program/data paths, offering deterministic instruction timing useful for real-time control.
Key features include 33 I/O pins with high-current sink/source, multiple peripherals (USART, SSP/SPI/I2C, 8-channel 8-bit ADC, capture/compare/PWM, timers), and a 15-bit program counter that addresses 32KB of program space. The 'LC' prefix indicates a low-power CMOS variant supporting 2.0V to 6.0V VDD, while the standard PIC16C74B (no L) supports 4.2V to 6.0V. The OTP memory is programmed once and is non-erasable, making this part suited for production volumes where field firmware updates are not required.
This PIC16LC74B-04/L is intended for embedded control applications requiring deterministic 8-bit performance in a surface-mount PLCC footprint. Common uses include industrial controllers, motor control front-ends, sensor interface boards, consumer appliances, and legacy equipment retrofits. Because it uses a 44-pin PLCC package with through-hole-style J-leads, it is also socketable, simplifying prototyping and field replacement. Engineers migrating from the PIC16C74B benefit from pin and code compatibility per Microchip's PICmicro Pin and Code Compatibility Chart.
Design considerations: ensure VDD is within the LC-variant range (2.0V-6.0V); use the MCLR reset pin with a proper pull-up and, if needed, an external brown-out supervisor; configure the oscillator mode (RC/HS/XT/LP) per the application. OTP programming requires a Microchip programmer (PICSTART Plus, ICD, etc.) at production time - plan device provisioning accordingly.
This page synthesizes distributor pricing, lifecycle signals, drop-in PIC16-family alternatives, and practical design notes for the PIC16LC74B-04/L not found in a single datasheet view.
کے لیے ڈراپ اِن متبادل PIC16LC74B-04/L — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC16LC74B-04/L (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Mounting Type, Package, Program Memory Size, Program Memory Type, Timers.
PIC16C74B-04/L
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LC74BT-04/L
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LC74A-04/L
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C74A-04I/L
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16LC64A-04I/L
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LC74B-04/L زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | 8-bit PIC mid-range (PIC16CXX family, 14-bit instruction word) |
| زیادہ سے زیادہ کلاک فریکوئنسی | 4 MHz |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14) |
| RAM Size | 192 bytes |
| Data EEPROM | Not specified in distributor listing |
| Supply Voltage (VDD) | 2.0 V to 6.0 V (LC low-voltage variant) |
| I/O Pins | 33 |
| ADC | 8-channel, 8-bit |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Capture/Compare/PWM | Yes (2 CCP modules) |
| Serial Interfaces | USART, SSP (SPI / I2C) |
| پیکیج | 44-pin PLCC (16.59 x 16.59 mm, J-lead) |
| ماؤنٹنگ ٹائپ | Surface Mount (PLCC socket-compatible) |
| آپریٹنگ درجہ حرارت | 0C to +70C (commercial grade) |
PIC16LC74B-04/L پن کنفیگریشن
| پن 1 | MCLR — Master Clear (reset) input, active low |
| پن 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| پن 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| پن 4 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| پن 5 | RA3/AN3/VREF — PORTA bit 3 / Analog input 3 / ADC reference |
| پن 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| پن 7 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI slave select |
| پن 8 | RE0/RD/AN5 — PORTE bit 0 / Parallel port read / Analog input 5 |
| پن 9 | RE1/WR/AN6 — PORTE bit 1 / Parallel port write / Analog input 6 |
| پن 10 | RE2/CS/AN8 — PORTE bit 2 / Parallel port chip select / Analog input 8 |
| پن 11 | VDD — Positive supply (2.0V-6.0V) |
| پن 12 | VSS — Ground reference |
| پن 13 | OSC1/CLKIN — Oscillator crystal input / external clock in |
| پن 14 | OSC2/CLKOUT — Oscillator crystal output / clock out |
| پن 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| پن 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| پن 17 | RC2/CCP1 — PORTC bit 2 / CCP1 |
| پن 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| پن 19 | RD0/PSP0 — PORTD bit 0 / Parallel slave port bit 0 |
| پن 20 | RD1/PSP1 — PORTD bit 1 / Parallel slave port bit 1 |
| پن 21 | RD2/PSP2 — PORTD bit 2 / Parallel slave port bit 2 |
| پن 22 | RD3/PSP3 — PORTD bit 3 / Parallel slave port bit 3 |
| پن 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| پن 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| پن 25 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| پن 26 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| پن 27 | RD4/PSP4 — PORTD bit 4 / Parallel slave port bit 4 |
| پن 28 | RD5/PSP5 — PORTD bit 5 / Parallel slave port bit 5 |
| پن 29 | RD6/PSP6 — PORTD bit 6 / Parallel slave port bit 6 |
| پن 30 | RD7/PSP7 — PORTD bit 7 / Parallel slave port bit 7 |
| پن 31 | VSS — Ground reference |
| پن 32 | VDD — Positive supply (2.0V-6.0V) |
| پن 33 | RB0/INT — PORTB bit 0 / External interrupt |
| پن 34 | RB1 — PORTB bit 1 |
| پن 35 | RB2 — PORTB bit 2 |
| پن 36 | RB3 — PORTB bit 3 |
| پن 37 | RB4 — PORTB bit 4 |
| پن 38 | RB5 — PORTB bit 5 |
| پن 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| پن 40 | RB7/PGD — PORTB bit 7 / ICSP data |
| پن 41 | RF0/AN5 — PORTF bit 0 / Analog input 5 |
| پن 42 | RF1/AN6 — PORTF bit 1 / Analog input 6 |
| پن 43 | RF2/AN7 — PORTF bit 2 / Analog input 7 |
| پن 44 | RF3 — PORTF bit 3 |
عام استعمالات
PIC16LC74B-04/L کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Motor Control Front-End, Sensor Interface / Data Acquisition Board, Consumer Appliance Controller, Legacy Equipment Retrofit / Replacement Boards, USART-Based Communication Modules, Battery-Powered Embedded Sensor Node.
Industrial Motor Control Front-End
The PIC16LC74B-04/L fits industrial motor control front-ends thanks to its 8-channel 8-bit ADC (for current/voltage sensing) and two CCP modules (PWM outputs for H-bridge control). Operating at 4 MHz, it can close a 10 kHz control loop while sampling all 8 ADC channels via multiplexed conversion. Its 33 I/O drives encoder inputs, end-stop switches, and relay outputs without external glue logic. The 2.0-6.0V LC supply range supports 3.3V logic rails common in BLDC inverter boards.
تجویز کردہ
Sensor Interface / Data Acquisition Board
The PIC16LC74B-04/L serves well in sensor interface boards because its 8-channel 8-bit ADC supports parallel analog sensor arrays (e.g. thermocouples, RTDs, pressure transducers). The 192-byte RAM is sufficient for averaging/decimation buffers, while the USART and SSP peripherals enable SPI or I2C sensor busses. The 4 MHz clock samples at ~30 kS/s aggregate, ideal for slow environmental monitoring. The 44-PLCC socketable package simplifies field calibration and replacement.
تجویز کردہ
Consumer Appliance Controller
Consumer appliances such as washing machines, microwave ovens, and dishwasher controllers benefit from the PIC16LC74B-04/L's deterministic 8-bit performance and rich peripheral set. The 33 I/O drives seven-segment displays, buzzer PWM, keypad matrix, and triac-triggered heater relays. The 7 KB OTP holds the full appliance state machine and user-interface logic. The 2.0-6.0V LC range simplifies direct connection to rectified mains-derived 5V or 3V rails.
تجویز کردہ
Legacy Equipment Retrofit / Replacement Boards
The PIC16LC74B-04/L is ideal for legacy equipment retrofits where exact compatibility with the 44-PLCC /L footprint is required. Its pin and code compatibility with the broader PIC16CXX mid-range family (per Microchip Pin and Code Compatibility Chart) allows firmware reuse from PIC16C74A/B or PIC16LC64A designs. The PLCC package is socketable, simplifying field service - technicians can swap chips without desoldering.
تجویز کردہ
USART-Based Communication Modules
For USART-based communication modules (RS-232/485 bridges, sensor concentrators), the PIC16LC74B-04/L provides a hardware USART with auto-baud detection and a 9-bit address mode for RS-485 multi-drop networks. The 33 I/O supports DE/RE flow-control signals and protocol-select jumpers. Combined with the SSP module, the device can act as an SPI-to-UART gateway, offloading bus conversion in industrial networking modules.
تجویز کردہ
Battery-Powered Embedded Sensor Node
Battery-powered sensor nodes leverage the PIC16LC74B-04/L's 2.0V VDD minimum, allowing operation from two alkaline cells down to 2.0V end-of-life. The CMOS LC process keeps quiescent current low, while the 4 MHz clock and 7 KB OTP support wake-up via interrupt, sample, transmit via USART, and return to sleep. The 192-byte RAM and 33 I/O are sufficient for a star-topology wireless sensor hub running simple MAC-layer firmware.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16LC74B-04/L — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16C74B-04/L | PIC16LC74BT-04/L | PIC16LC74A-04/L | PIC16C74A-04I/L | PIC16LC64A-04I/L |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-PLCC | 44-PLCC - same | 44-PLCC - same | 44-PLCC - same | 44-PLCC - same | 44-PLCC - same |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 3.5 KB OTP (-50%) |
| RAM | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 128 bytes (-33%) |
| Maximum Clock | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Supply Voltage | 2.0 V to 6.0 V | 4.2 V to 6.0 V | 2.0 V to 6.0 V | 2.0 V to 6.0 V | 4.2 V to 6.0 V | 2.0 V to 6.0 V |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| ADC | 8-ch / 8-bit | 8-ch / 8-bit | 8-ch / 8-bit | 8-ch / 8-bit | 8-ch / 8-bit | 8-ch / 8-bit |
| Memory Type | OTP | OTP | OTP | OTP | OTP | OTP |
| Operating Temperature | 0C to +70C | 0C to +70C | 0C to +70C | 0C to +70C | -40C to +85C (industrial) | -40C to +85C (industrial) |
اہم امتیازی خصوصیات
- Wide 2.0V-6.0V supply range for low-voltage and 5V systems (بمقابلہPIC16C74B-04/L)
- 33 I/O with 8-channel 8-bit ADC and dual CCP in 44-PLCC (بمقابلہPIC16LC64A-04I/L)
- Mid-range PIC code-compatibility per Microchip compatibility chart (بمقابلہPIC16LC74A-04/L)
ڈیزائن نوٹس
Estimated: at 4 MHz and 5V VDD, the PIC16LC74B-04/L core draws approximately 2-4 mA active and <1 uA in sleep, based on mid-range LC process typicals. Add bulk decoupling (10uF + 100nF) close to VDD pins (pin 11 and pin 32), and place a 100nF between VDD pairs of common-mode noise. For 3.3V rails, the LC process tolerates down to 2.0V but performance degrades at lower VDD; verify ADC accuracy and oscillator start-up margin at the minimum supply voltage.
The 44-PLCC package has J-leads on four sides with 1.27 mm pitch. Place a PLCC-44 socket (machined-pin or surface-mount) for field serviceability. Route OSC1/OSC2 (pin 13/14) traces as short as possible with grounded guard traces for crystal oscillator configurations; for RC oscillator mode, keep R/C components close to OSC1. Keep the MCLR trace short with the pull-up resistor within 10 mm of pin 1 to minimize spurious resets.
The PIC16LC74B-04/L is OTP (one-time programmable) - the program memory cannot be erased or rewritten. Engineering builds should use a flash-based sibling (PIC16F74A-I/L, same PLCC-44 footprint) for development, then convert to PIC16LC74B-04/L only for production runs where firmware is locked. Do not confuse the /L (PLCC) package designator with /P (PDIP) or /PT (TQFP) - the pinouts are NOT interchangeable: PLCC-44, PDIP-40, and TQFP-44 all have different pin maps.
Estimated: separate analog and digital ground planes are recommended when using the ADC - PORTA/RE pins serve dual analog/digital roles. Place the AVdd (pin 11 if tied to VDD) decoupling within 5 mm of the pin. Use the AN3/VREF pin (pin 5) only when a precise external reference is needed; for VDD-based reference, leave it unconnected and configure ADC accordingly. PORTF analog inputs (RF0-RF2) on PLCC-44 are routed separately from PORTA - verify channel mapping against your schematic.
تعمیل کی معلومات
RoHS, REACH, lead-free and halogen-free status not stated in distributor listings; refer to Microchip product environmental compliance page for the latest certificate. AEC-Q100 not applicable - this is a commercial/industrial MCU, not automotive qualified.
