PIC16LC76-04/SO - 8-Bit 4MHz OTP MCU 14KB | Microchip
MPN: PIC16LC76-04/SO ✓ Hoạt độngPIC16LC76-04/SO Tóm tắt
A PIC microcontroller (Programmable Interface Controller, also called Peripheral Interface Controller) is a class of compact, RISC-based single-chip computers widely used in embedded systems. The PIC16 family sits at the lower-mid tier of Microchip's portfolio, and the C7X sub-family specifically adds an on-chip analog-to-digital converter - an extension over the base PIC16 architecture. Compared with earlier PIC16 parts (PIC16C7X family datasheet), the LC76 variant distinguishes itself by combining the A/D peripheral set with a low-voltage core that supports 3.3 V operation, which is essential for portable and battery-backed designs where 5 V is not available.
Architecturally, the PIC16LC76-04/SO uses a Harvard memory organization with separate program and data paths, a 14-bit instruction word, and 35 single-word instructions. The RISC pipeline executes most instructions in a single 200 ns instruction cycle at 20 MHz (the -04 speed grade corresponds to a 4 MHz oscillator input, yielding a 1 µs instruction cycle). Brown-out reset, watchdog timer and code protection are built into the silicon, reducing external component count on the application board.
Typical applications include industrial control front-ends, sensor signal conditioning, low-speed data acquisition systems, HVAC control boards, automotive interior modules, and consumer appliance user interfaces. The integrated A/D converter and USART make it a strong fit for systems that must read analog sensors and report to a host controller over a serial link without requiring a separate ADC chip.
When designing with this part, note that OTP memory cannot be re-programmed - production firmware must be masked into the ROM at the factory (PIC16CR76) for high-volume runs. Designers should plan for the 28-pin SOIC footprint to be compatible with the wider SKC in the family (PIC16C76) when migrating between OTP and mask-ROM variants. This page synthesizes distributor stock data, drop-in alternatives and design notes not found in the standalone datasheet PDF.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC76-04/SO — 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 PIC16LC76-04/SO (cùng hình factor và footprint) — khác nhau ở ADC, Core Architecture, Package, Timers, Mounting Type.
PIC16LC76T-04/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC76-04I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC76-04/SP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16CR76-04/SO
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F76-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C76-04/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC76-04/SO Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16C7X RISC, 8-bit Harvard |
| Instruction Set Width | 16-bit instructions, 14-bit opcode |
| Number of Instructions | 35 single-word |
| Tần số xung maksimum | 4 MHz (-04 speed grade) |
| Instruction Cycle Time | 1 µs at 4 MHz |
| Program Memory | 14 KB (8K x 14) OTP |
| Data Memory (RAM) | 368 bytes |
| Data EEPROM | Not present on this die |
| Supply Voltage Range | 2.5 V to 6.0 V |
| I/O Pins | 22 |
| A/D Converter | 8-bit, 8 channels |
| Timers | Two 8-bit + one 16-bit timer/counter |
| Serial Interface | USART (SCI) |
| Hộp | 28-SOIC wide (300 mil) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | 0 °C to +70 °C (commercial) |
| Trạng thái RoHS | Compliant |
| Tube Quantity | 27 per tube |
Cấu hình chân PIC16LC76-04/SO
| Chân 1 | MCLR/VPP — Master clear (reset) input / programming voltage |
| Chân 2 | RA0/AN0 — PORTA bit 0 / analog input channel 0 |
| Chân 3 | RA1/AN1 — PORTA bit 1 / analog input channel 1 |
| Chân 4 | RA2/AN2 — PORTA bit 2 / analog input channel 2 |
| Chân 5 | RA3/AN3/VREF — PORTA bit 3 / analog input channel 3 / ADC reference voltage |
| Chân 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 7 | RA5/AN4/SS — PORTA bit 5 / analog input channel 4 / SPI slave select |
| Chân 8 | RE0/AN5 — PORTE bit 0 / analog input channel 5 |
| Chân 9 | RE1/AN6 — PORTE bit 1 / analog input channel 6 |
| Chân 10 | RE2/AN7 — PORTE bit 2 / analog input channel 7 |
| Chân 11 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Chân 13 | RC2/CCP1 — PORTC bit 2 / CCP1 |
| Chân 14 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 15 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 16 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 17 | RC6/TX/CK — PORTC bit 6 / USART async transmit / USART sync clock |
| Chân 18 | RC7/RX/DT — PORTC bit 7 / USART async receive / USART sync data |
| Chân 19 | VSS — Ground |
| Chân 20 | VDD — Positive supply voltage |
| Chân 21 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 22 | RB1 — PORTB bit 1 |
| Chân 23 | RB2 — PORTB bit 2 |
| Chân 24 | RB3 — PORTB bit 3 |
| Chân 25 | RB4 — PORTB bit 4 (interrupt-on-change) |
| Chân 26 | RB5 — PORTB bit 5 (interrupt-on-change) |
| Chân 27 | RB6/PGC — PORTB bit 6 / ICSP clock (interrupt-on-change) |
| Chân 28 | RB7/PGD — PORTB bit 7 / ICSP data (interrupt-on-change) |
Ứng dụng tiêu biểu
PIC16LC76-04/SO phù hợp cho 6 Áp dụngs: Industrial Sensor Interface Board, HVAC Control Board, Low-Speed Data Acquisition System, Consumer Appliance User Interface, Automotive Interior Module, Battery-Backed Remote Sensor Node.
Industrial Sensor Interface Board
The PIC16LC76-04/SO fits industrial sensor-interface boards because its integrated 8-channel 8-bit ADC eliminates a dedicated ADC chip, while the 22 I/O pins can directly drive relays, LEDs and a 4x4 keypad matrix. Operating from 2.5 V to 6.0 V (per Microchip datasheet DS30390), it tolerates 24 V industrial bus voltages after a simple LDO or resistor-zener pre-regulation. The 4 MHz oscillator and 14 KB OTP support polled 100 Hz sampling of up to 8 analog channels with on-chip averaging, while the USART streams averaged readings to a host PLC at 9600 baud. At 3 V / 32 kHz standby, the part draws 1 µA typical (per datasheet), making it suitable for always-on field sensors. Engineers pair it with a PIC16LC717 or similar companion part when an extra I2C port is required.
Được đề xuất
HVAC Control Board
The PIC16LC76-04/SO is well matched to HVAC control boards thanks to its 22 digital I/O for driving fans, solenoid valves and triac optocouplers, plus an on-chip ADC for reading NTC thermistors and pressure transducers. Operating from 2.5 V to 6.0 V (per Microchip datasheet DS30390), it can be powered directly from a 5 V rectified-and-regulated transformer rail, simplifying the BOM. The 4 MHz oscillator and 14 KB OTP hold a full proportional-integral control loop with weekly scheduler in a single device. Brown-out reset and watchdog timer (built into silicon per datasheet) recover the controller automatically from mains brown-outs, a critical feature for unattended HVAC equipment. Recommended companion parts are PIC16LC620A for keypad scanning and PIC16LC711 for additional timer PWM channels.
Được đề xuất
Low-Speed Data Acquisition System
The PIC16LC76-04/SO suits low-speed multi-channel data acquisition where the on-chip 8-channel 8-bit ADC samples slowly-changing signals such as battery voltage, thermistor bridges or strain gauges. Per the Microchip datasheet (DS30390), the ADC can be clocked from the main 4 MHz oscillator, yielding a 16-20 µs conversion time adequate for 1 kHz-per-channel aggregate throughput. The USART transfers acquired samples to a host PC or display controller at 19,200 baud while the 368-byte RAM acts as a circular buffer. The 2.5 V minimum Vdd allows direct 3.3 V battery operation, and 1 µA standby at 3 V / 32 kHz extends battery life between samples. Designers can pair the part with a PIC16LC711 for additional PWM-controlled excitation of sensor transducers.
Được đề xuất
Consumer Appliance User Interface
The PIC16LC76-04/SO powers consumer appliance user interfaces including washing-machine front panels, microwave ovens and coffee machines, where its 22 I/O drive 7-segment displays, indicator LEDs and matrix keypads without external logic. Per the Microchip datasheet (DS30390), the part operates from 2.5 V to 6.0 V and consumes only 15 µA at 5 V / 4 MHz, keeping standby power below the 0.5 W limit mandated by many energy-star programs. The on-chip USART links the front panel to the appliance main controller for shared status display. The 14 KB OTP supports menu navigation, beep patterns and fault-code storage without an external EEPROM. Recommended companion parts are PIC16LC558 for low-cost LED multiplexing and PIC16LC620A for capacitive-touch sensing.
Được đề xuất
Automotive Interior Module
The PIC16LC76-04/SO works in interior automotive modules such as seat controllers, mirror adjusters and HVAC blend-door actuators where 5 V is the prevailing rail. Per the Microchip datasheet (DS30390), the LC variant's 2.5 V lower Vdd lets it share a 3.3 V standby supply with body-control modules. The 22 I/O drive small brushed motors through external FETs, while the 14 KB OTP stores calibration curves for position feedback. Built-in brown-out reset (per datasheet) protects against load-dump transients when paired with a TVS diode and series resistor. Recommended companion parts: PIC16LC711 for additional PWM channels (window/liftgate control) and PIC16LC717 for I2C communication with the BCM.
Được đề xuất
Battery-Backed Remote Sensor Node
The PIC16LC76-04/SO is an excellent fit for battery-backed remote sensor nodes because of its 1 µA typical standby current at 3 V / 32 kHz (per Microchip datasheet DS30390), allowing multi-year life on a single CR2032 coin cell when duty-cycled. The on-chip ADC reads battery voltage and an external analog sensor at wake intervals, the 22 I/O wake the radio modem on threshold crossings, and the USART transmits the reading over a low-power RF link. The 2.5 V minimum Vdd ensures reliable operation as the cell drops toward end-of-life. Recommended companion parts: PIC16LC711 for sensor excitation PWM and PIC16LC717 for I2C sensor interfacing.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC76-04/SO — 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 | PIC16LC76T-04/SO | PIC16LC76-04I/SO | PIC16LC76-04/SP | PIC16CR76-04/SO | PIC16F76-I/SO | PIC16C76-04/SO |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC wide (300 mil) | 28-SOIC wide (300 mil) - same | 28-SOIC wide (300 mil) - same | 28-SOIC wide (300 mil) - same | 28-SOIC wide (300 mil) - same | 28-SOIC wide (300 mil) - same | 28-SOIC wide (300 mil) - same |
| Program Memory Type | 14 KB OTP | 14 KB OTP | 14 KB OTP | 14 KB OTP | 14 KB ROM (factory masked) | 14 KB Flash | 14 KB OTP |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz (5 MHz for -I grade) | 4 MHz |
| Supply Voltage Range | 2.5 V to 6.0 V | 2.5 V to 6.0 V | 2.5 V to 6.0 V | 2.5 V to 6.0 V | 2.5 V to 6.0 V | 2.0 V to 5.5 V | 4.0 V to 6.0 V |
| ADC Channels | 8 x 8-bit | 8 x 8-bit | 8 x 8-bit | 8 x 8-bit | 8 x 8-bit | 8 x 8-bit | 8 x 8-bit |
| Operating Temperature | 0 °C to +70 °C (commercial) | 0 °C to +70 °C | -40 °C to +85 °C (industrial) | 0 °C to +70 °C | 0 °C to +70 °C | -40 °C to +85 °C (industrial) | 0 °C to +70 °C |
| I/O Pins | 22 | 22 | 22 | 22 | 22 | 22 | 22 |
Bảo phân biệt quan trọng
- Lowest-voltage operation in PIC16C7X family (vsPIC16C76-04/SO)
- In-system flash programming alternative (vsPIC16F76-I/SO)
- Factory-masked ROM variant for high-volume (vsPIC16CR76-04/SO)
Ghi chú thiết kế
The PIC16LC76-04/SO draws 15 µA typical active current at 5 V / 4 MHz and 1 µA typical standby at 3 V / 32 kHz per the Microchip datasheet (DS30390). Decouple Vdd (pin 20) with a 100 nF ceramic capacitor placed within 5 mm of the pin, plus a bulk 10 µF tantalum or aluminum-polymer capacitor on the same rail. For battery-backed designs, add a 100 kΩ external pull-up on MCLR (pin 1) rather than relying on the internal weak pull-up to keep standby current below 2 µA total.
The 28-SOIC wide (300 mil) footprint has 1.27 mm pin pitch; per Microchip land-pattern recommendations (DS30390), use a pad width of 0.45 mm and pad length of 2.0 mm with a SOIC-wide thermal relief pattern. Route the 4 MHz crystal traces (RC0/RC1 for low-power Timer1 oscillator) as short as possible and guard them with a ground pour to minimize noise coupling into the analog inputs. Place the analog Vref decoupling (0.1 µF) close to RA3/AN3/Vref (pin 5) to reduce ADC sampling jitter.
Three common pitfalls with PIC16LC76-04/SO: (1) applying >6.0 V to Vdd will permanently damage the silicon - the LC variant's 2.5 V lower limit does NOT mean the upper limit is relaxed; (2) OTP memory cannot be erased - design with PIC16F76-I/SO during firmware bring-up and migrate to LC76 only when firmware is frozen; (3) the on-chip ADC requires the A/D conversion clock (Tad) to be a minimum of 1.6 µs - at Fosc=4 MHz the ADC must be configured with Fosc/8 or slower to meet this constraint per datasheet DS30390.
Thông tin tuân thủ
RoHS compliant per Microchip product page (PIC16LC76-04/SO datasheet DS30390). Not AEC-Q100 qualified - use PIC16F76-I/SO with automotive qualification for vehicle applications. Lead-free matte-tin plating per Microchip packaging spec.
