PIC16F819-I/SOTSL - 8-bit MCU, 3.5KB Flash, 20MHz | Microchip
MPN: PIC16F819-I/SOTSL ✓ Hoạt độngPIC16F819-I/SOTSL Tóm tắt
An 8-bit microcontroller (MCU) is a programmable processor built around an 8-bit data path that integrates CPU core, non-volatile program memory, working RAM, and a curated set of peripherals onto a single IC. The PIC16F architecture belongs to the broader class of RISC microcontrollers, using a Harvard memory layout, a small instruction word, and a deterministic instruction pipeline. Within the PIC16 family, the F-series adds on-chip Flash and EEPROM, and the 819 part number places this device in the 18/20-pin nanoWatt category: low-power variants optimized for sleep-current performance.
Key features include 200 ns instruction execution, a wide 2.0 V to 5.5 V operating range, nanoWatt power management, in-circuit debugging via ICSP, and flash program memory that supports up to 100,000 erase/write cycles. The 10-bit ADC with 5 channels supports both internal and external voltage references, and the MSSP module can operate as SPI master/slave or as I2C master/slave at up to 400 kHz. Brown-out Reset (BOR) and Power-on Reset (POR) provide fail-safe startup.
The internal architecture pairs a 14-bit instruction word with an 8-bit data path, two register files for fast context switching, and a hardware interrupt controller that supports edge- or level-sensitive external interrupts on selected I/O. The CCP module produces PWM with up to 10-bit resolution at the timer base frequency, suitable for LED dimming, motor control signal generation, and analog setpoint production. The -I (industrial) suffix extends the operating temperature range from -40 C to +85 C, while -E (extended) parts cover -40 C to +125 C.
Typical applications include low-power remote sensor nodes, battery-backed instrumentation, small appliance controls, lighting and dimmer circuits, and intelligent peripherals for industrial equipment. The integrated 10-bit ADC and I2C/SPI peripherals allow the PIC16F819 to act as a glue controller between analog sensors and a host processor over a standard serial bus, while its low sleep current makes it well suited to Energy-harvesting or long-life primary-cell applications.
When designing with this device, ensure the MCLR pin is properly biased with a 10 kohm pull-up to VDD and that decoupling is placed within 1mm of the VDD pin. The internal 8 MHz oscillator can drift over temperature; choose the -I or -E temperature grade based on the worst-case ambient, and reserve the I2C SCL/SDA pins (RB6/RB7) with adequate 4.7 kohm pull-ups if the bus is shared with other devices.
This page synthesizes distributor pricing and stock for the PIC16F819-I/SOTSL, cross-references drop-in SOIC-18 alternatives, and provides practical design notes not found in the manufacturer datasheet, going beyond DigiKey/Mouser product listings.
Bộ thay thế dễ dàng lắp đặt cho PIC16F819-I/SOTSL — 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 PIC16F819-I/SOTSL (cùng hình factor và footprint) — khác nhau ở Package, Internal Oscillator, Core Architecture, Operating Temperature, Timers.
PIC16LF819-I/SOTSL
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F818-I/SOTSL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F819-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F819-E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F88-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F819-E/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F819-I/SOTSL Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit Microcontroller (MCU) |
| Architecture | PIC16F RISC, Harvard, 14-bit instruction word |
| Program Memory (Flash) | 3.5 KB (2K x 14) |
| Data RAM | 256 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Frequency | 20 MHz |
| Instruction Cycle Time | 200 ns |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial, -I) |
| Number of I/O Pins | 16 |
| Internal Oscillator | 8 MHz (factory calibrated) |
| ADC | 10-bit, 5 channels |
| Serial Peripherals | SSP (SPI / I2C), USART not present |
| CCP Module | 1 x Capture/Compare/PWM (10-bit PWM) |
| Timers | Timer0 (8-bit), Timer1 (16-bit), Timer2 (8-bit) |
| Interrupts | Hardware, with edge/level selectable external INT |
| Brown-out Reset / Power-on Reset | Yes |
| ICSP Debug | Yes (In-Circuit Serial Programming) |
| Hộp | 18-SOIC (0.295 inch / 7.50 mm body width) |
| Kiểu lắp đặt | Surface Mount |
| Power-Saving Modes | nanoWatt (Sleep current typically < 1 uA) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16F819-I/SOTSL
| Chân 1 | MCLR/VPP/RE3 — Master Clear (active low) / Programming Voltage / Port E bit 3 |
| 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/CVREF — PORTA bit 2 / Analog input channel 2 / Comparator Voltage Reference output |
| Chân 5 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input channel 3 / Positive ADC voltage reference |
| Chân 6 | RA4/TOCKI — PORTA bit 4 / Timer0 clock input |
| Chân 7 | RA5/AN4/SS — PORTA bit 5 / Analog input channel 4 / SPI Slave Select |
| Chân 8 | VSS — Ground reference |
| Chân 9 | OSC1/CLKI/RA7 — Crystal oscillator input / External clock input / PORTA bit 7 |
| Chân 10 | OSC2/CLKO/RA6 — Crystal oscillator output / Clock output / PORTA bit 6 |
| 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 input or output |
| Chân 13 | RC2/CCP1 — PORTC bit 2 / CCP1 input or PWM output |
| 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 | RB7/PGD/ICSPDAT — PORTB bit 7 / ICSP data / ICSP data |
| Chân 18 | RB6/PGC/ICSPCLK — PORTB bit 6 / ICSP clock / ICSP clock |
Ứng dụng tiêu biểu
PIC16F819-I/SOTSL phù hợp cho 6 Áp dụngs: Battery-Backed Remote Sensor Node, Industrial Lighting Dimmer Controller, Small Appliance Control Board, Intelligent Peripheral with SPI/I2C Interface, Automotive Body Electronics Sub-Module, Consumer Hobbyist and Educational Platform.
Battery-Backed Remote Sensor Node
The PIC16F819-I/SOTSL suits battery-backed remote sensor nodes because its nanoWatt Sleep mode drops quiescent current below 1 uA typical, allowing multi-year battery life when waking briefly to digitize a sensor reading. Its 5-channel 10-bit ADC handles temperature, voltage, and analog signal conditioning at sub-mW average power, while the I2C/SPI master peripheral connects to digital sensors such as accelerometers or humidity ICs. The 256-byte EEPROM provides reliable storage for calibration coefficients without external non-volatile memory, and the 20 MHz CPU throughput sufficient for digital filter preprocessing before low-power sleep. Power dissipation remains under 30 mW even at full 20 MHz and 5 V, well within the SOIC-18 thermal limit of approximately 1 W on standard JEDEC EIA/JESD 51 test boards.
Được đề xuất
Industrial Lighting Dimmer Controller
The PIC16F819-I/SOTSL fits lighting dimmer controllers thanks to its Capture/Compare/PWM (CCP) module that produces 10-bit PWM at the Timer2 base frequency, enabling smooth 0-100% dimming curves for LED fixtures and incandescent loads. Its 16 I/O pins can drive multiple channels of MOSFET gates or triac optocouplers for AC line dimming, while the analog comparator and ADC verify zero-cross timing for phase-angle control. The 2.0 V to 5.5 V VDD range simplifies power supply design across 3.3 V and 5 V logic levels, and the -40 C to +85 C industrial temperature rating supports industrial lighting environments. Power dissipation at 5 V and 20 MHz is approximately 30 mW, leaving substantial thermal budget for the SOIC-18 package.
Được đề xuất
Small Appliance Control Board
The PIC16F819-I/SOTSL serves small appliance control boards (coffee makers, fans, kitchen timers) because its CCP module drives TRIAC gates for heater elements and motor windings, while its 10-bit ADC monitors NTC thermistors for closed-loop temperature control. Its Flash memory supports in-the-field firmware updates through ICSP, simplifying manufacturing bring-up timelines for small batch production. The 35 single-word instruction set makes assembly programming efficient for time-deterministic motor-control loops, and the 256-byte RAM handles PWM duty-cycle arithmetic without external memory. Power dissipation at 5 V and 20 MHz is approximately 30 mW, well within the SOIC-18 thermal limit on a 1 square inch copper pour.
Được đề xuất
Intelligent Peripheral with SPI/I2C Interface
The PIC16F819-I/SOTSL acts as an intelligent peripheral for larger systems because its main Slave Control Port can be configured as SPI or I2C, allowing it to appear as a co-processor on a system bus while exposing its 5-channel 10-bit ADC, CCP PWM output, and digital I/O to the host. This makes it useful for distributed control nodes where the main processor handles HMI but delegates analog sampling and PWM generation to a PIC16F819. Its nanoWatt Sleep mode allows the peripheral to remain quiescent until the host requests a reading, conserving system power budgets in industrial and IoT applications. Power dissipation at 5 V and 20 MHz is approximately 30 mW, manageable in the SOIC-18 package.
Được đề xuất
Automotive Body Electronics Sub-Module
The PIC16F819-I/SOTSL handles automotive body sub-modules (seat controllers, mirror adjusters, ambient lighting) because its 16 I/O pins drive relay coils and sense switch contacts, while its 10-bit ADC monitors the 12 V battery rail through a resistive divider. The -40 C to +85 C industrial temperature rating covers cabin environments, though for under-hood applications a PIC16F819-E/SO (extended -40 C to +125 C) is preferred for thermal margin. Its I2C/SPI peripheral connects to sensor clusters, and its CCP module drives PWM-controlled LED strings for ambient lighting. Power dissipation at 5 V and 20 MHz is approximately 30 mW, and the SOIC-18 footprint withstands typical automotive shock and vibration profiles per JEDEC JESD22-B103B.
Được đề xuất
Consumer Hobbyist and Educational Platform
The PIC16F819-I/SOTSL is well suited to hobbyist and educational projects because of its low cost, broad Microchip MPLAB X IDE support, and free XC8 compiler availability. Its 35-instruction PIC16 instruction set is pedagogically clean and well documented, making it an excellent teaching vehicle for register-level programming and interrupt-driven design. The 18-SOIC footprint is breadboard-friendly with SOIC-to-DIP adapters, and the ICSP interface allows students to flash firmware without removing the part. The 256-byte EEPROM stores user preferences in hobbyist projects such as custom game controllers, electronic dice, and simple data loggers. Power dissipation at 5 V and 20 MHz is approximately 30 mW in the SOIC-18 package.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F819-I/SOTSL — 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 | PIC16LF819-I/SOTSL | PIC16F818-I/SOTSL | PIC16F819-I/SO | PIC16F819-E/SO | PIC16F88-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC (0.295 inch) | 18-SOIC (0.295 inch) - same | 18-SOIC (0.295 inch) - same | 18-SOIC (0.295 inch) - same | 18-SOIC (0.295 inch) - same | 18-SOIC (0.295 inch) - same |
| Program Memory (Flash) | 3.5 KB (2K x 14) | 3.5 KB (2K x 14) | 3.5 KB (2K x 14) | 3.5 KB (2K x 14) | 3.5 KB (2K x 14) | 4 KB (2K x 14) |
| Data RAM | 256 B | 256 B | 256 B | 256 B | 256 B | 368 B |
| Data EEPROM | 256 B | 256 B | 0 B (not present) | 256 B | 256 B | 256 B |
| VDD Range | 2.0 V to 5.5 V | 1.8 V to 3.6 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| ADC Channels | 5 channels, 10-bit | 5 channels, 10-bit | 5 channels, 10-bit | 5 channels, 10-bit | 5 channels, 10-bit | 7 channels, 10-bit |
| Temperature Grade | Industrial -40 C to +85 C | Industrial -40 C to +85 C | Industrial -40 C to +85 C | Industrial -40 C to +85 C | Extended -40 C to +125 C | Industrial -40 C to +85 C |
| USART | Not present | Not present | Not present | Not present | Not present | Present (1 x USART) |
Bảo phân biệt quan trọng
- Same 18-SOIC footprint as PIC16LF819-I/SOTSL with extended 1.8 V to 3.6 V support (vsPIC16LF819-I/SOTSL)
- Includes 256-byte data EEPROM versus PIC16F818-I/SOTSL which omits EEPROM (vsPIC16F818-I/SOTSL)
- Industrial -40 C to +85 C grade versus extended -40 C to +125 C in PIC16F819-E/SO (vsPIC16F819-E/SO)
Ghi chú thiết kế
The PIC16F819-I/SOTSL nanoWatt Sleep mode reduces quiescent current below 1 uA typical when the CPU is halted but peripherals can be configured to wake the device on Timer1 overflow or external interrupts. Place a 100 nF ceramic decoupling capacitor within 1 mm of the VDD pin and a 10 uF bulk capacitor at the regulator output. Avoid drawing >200 mA peak from VDD on the SOIC-18 package; sustained current above 100 mA requires substantial copper pour to stay below the 150 C junction temperature limit.
Route the MCLR pin with a 10 kohm pull-up to VDD and place a 0.1 uF capacitor from MCLR to VSS within 1 mm of the pin to ensure monotonic rise < 1 ms for clean Power-on Reset. Keep the crystal or resonator traces within 5 mm of the OSC1/OSC2 pins and surround them with a grounded guard trace to reduce EMI susceptibility. Connect all VSS pins (pin 8 in SOIC-18) to a low-impedance ground pour for thermal dissipation and ESD return path. Per JEDEC EIA/JESD 51, the SOIC-18 thermal resistance theta_JA is approximately 80 C/W on a standard 1 oz 4-layer test board.
The PIC16F819-I/SOTSL main Slave Control Port (SSP) operates as either SPI master/slave at up to 10 MHz (Fosc/4) or I2C master/slave at 100 kHz Standard-mode and 400 kHz Fast-mode. For I2C bus sharing, add 4.7 kohm pull-ups to VDD on SCL (RC3) and SDA (RC4) to meet Fast-mode rise/fall time limits. For SPI, ensure the master SCK frequency does not exceed Fosc/4 (5 MHz at 20 MHz Fosc) and use series resistors near the source to dampen ringing on long PCB traces.
Do not assume the PIC16F819 8 MHz internal oscillator is accurate over temperature; it typically drifts +/- 2% from -40 C to +85 C, which is inadequate for UART timing or precise timing applications - use an external crystal when accuracy matters. The -I (industrial) suffix covers -40 C to +85 C; for designs that may exceed +85 C ambient, switch to the -E (extended) PIC16F819-E/SO variant. The A/D converter requires a 2-channel minimum acquisition time of approximately 20 us at 5 V; failure to wait the full acquisition window corrupts conversion results.
Thông tin tuân thủ
RoHS compliant per Microchip product page (https://www.microchip.com/en-us/product/PIC16F819). Not AEC-Q100 qualified; for automotive body electronics, validate thermal margin with PIC16F819-E/SO or AEC-Q100-qualified PIC16F variants.