PIC16F819T-E/SO - 8-bit 20MHz 3.5KB Flash MCU 18-SOIC | Microchip
MPN: PIC16F819T-E/SO ✓ Hoạt độngPIC16F819T-E/SO Tóm tắt
A microcontroller (MCU) is an integrated circuit that combines a CPU core, program memory, data memory, and peripheral interfaces in a single chip. Flash-based 8-bit MCUs such as the PIC16F819 sit at the foundation of embedded control hierarchies, bridging simple logic devices (timer ICs, glue logic) and higher-performance 32-bit Cortex-M or RISC-V application processors. The PIC® 16F architecture is fully upward compatible with the PIC16C7x, PIC16C62xA, PIC16C5X, and PIC12Cxxx devices, easing migration across Microchip's mature 8-bit portfolio.
Key features of the PIC16F819T-E/SO include a 10-bit ADC with up to 5 input channels, two 8-bit and one 16-bit timers with capture/compare, USART with LIN support, MSSP for SPI and I²C (master/slave), an 8 MHz internal oscillator, and nanoWatt power-saving modes that drop supply current to microampere levels during sleep. The 35 single-word instruction RISC core simplifies code generation and reduces firmware complexity compared with CISC alternatives.
Typical applications where this 18-pin 8-bit MCU fits include consumer appliances, automotive body modules (interior lighting, HVAC controls, sensor interfacing), industrial control panels with serial (LIN/UART) connectivity, low-cost sensor hubs, and battery-powered remote controls. Its wide operating temperature range and Flash programmability support in-circuit serial programming (ICSP) for both prototyping and production in-circuit firmware updates.
When designing with the PIC16F819T-E/SO, place decoupling capacitors (100 nF + 10 uF) within 5 mm of VDD/SS and use a 4.7 kΩ pull-up on MCLR as Microchip's reference design recommends. For software development, MPLAB X IDE with XC8 compiler and PICkit programmers remain the canonical toolchain. This page synthesises distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16F819T-E/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 PIC16F819T-E/SO (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, Timers, Internal Oscillator, ADC.
PIC16F819-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F819-E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F819T-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F88-I/SO
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F818-I/SO
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F819T-E/SO Tỷ lệ tối đa & tính chất điện
| Product Family | PIC® 16F |
| Core Architecture | 8-bit RISC |
| Instruction Set | 35 single-word instructions |
| Program Memory (Flash) | 3.5 KB (2K x 14) |
| RAM | 256 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Frequency | 20 MHz (200 ns instruction cycle) |
| Supply Voltage (Vdd) | 4 V to 5.5 V |
| I/O Pins | 16 |
| ADC | 10-bit, up to 5 channels |
| Timers | 2 x 8-bit, 1 x 16-bit with capture/compare |
| Communication Peripherals | USART (LIN support), MSSP (SPI / I²C master & slave) |
| Internal Oscillator | 8 MHz |
| Power-Saving Mode | nanoWatt Technology (sleep mode) |
| Hộp | 18-SOIC (0.295", 7.50 mm width) |
| Nhiệt độ hoạt động | -40 °C to +125 °C (Industrial, 'E' suffix) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16F819T-E/SO
| Chân 1 | RA2/AN2 — PORTA I/O / ADC channel 2 |
| Chân 2 | RA3/AN3/VREF+ — PORTA I/O / ADC channel 3 / ADC reference input |
| Chân 3 | RA4/AN4 — PORTA I/O / ADC channel 4 |
| Chân 4 | RA5/SS — PORTA I/O / MSSP slave select |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0/INT — PORTB I/O / External interrupt |
| Chân 7 | RB1 — PORTB I/O |
| Chân 8 | RB2 — PORTB I/O |
| Chân 9 | RB3/PGM — PORTB I/O / Low-voltage programming |
| Chân 10 | RB4 — PORTB I/O |
| Chân 11 | RB5 — PORTB I/O |
| Chân 12 | RB6/PGC — PORTB I/O / ICSP clock |
| Chân 13 | RB7/PGD — PORTB I/O / ICSP data |
| Chân 14 | VDD — Positive supply 4.0-5.5 V |
| Chân 15 | RA6/OSC2 — PORTA I/O / Crystal oscillator output |
| Chân 16 | RA7/OSC1 — PORTA I/O / Crystal oscillator input |
| Chân 17 | RA0/AN0 — PORTA I/O / ADC channel 0 |
| Chân 18 | RA1/AN1 — PORTA I/O / ADC channel 1 |
Ứng dụng tiêu biểu
PIC16F819T-E/SO phù hợp cho 6 Áp dụngs: Consumer Appliance Control, Industrial Sensor Hubs, Automotive Body Electronics (Prototyping), Battery-Powered Remote Controls, LED Lighting Drivers, IoT Sensor Nodes (UART/MQTT Gateway Side).
Consumer Appliance Control
The PIC16F819T-E/SO suits cost-sensitive consumer appliances (coffee makers, fan controllers, washing-machine user interfaces) with its 16 I/O pins, 10-bit ADC for sensor interfacing, and USART. The 256-byte EEPROM stores user settings (mode, timer presets) across power cycles. nanoWatt sleep mode drops quiescent current to microampere levels, helping appliances meet ENERGY STAR standby budgets under 1 W.
Được đề xuất
Industrial Sensor Hubs
The PIC16F819T-E/SO integrates MSSP (SPI / I²C) and USART (LIN-capable), letting it aggregate temperature, pressure, and flow sensors on a single 18-pin footprint. The 20 MHz core and 5 MIPS throughput handle cyclic polling with 10-bit ADC precision at sub-millisecond intervals. Its extended -40 °C to +125 °C operating range supports factory-floor deployment without external thermal management.
Được đề xuất
Automotive Body Electronics (Prototyping)
Although not AEC-Q100 qualified, the PIC16F819T-E/SO is widely used to prototype automotive body modules (interior lighting, HVAC panel logic, sensor nodes) thanks to its USART with LIN support, which is the standard low-speed automotive serial bus. Engineering-grade temperature coverage (-40 to +125 °C) allows under-hood and cabin prototypes, while the Flash-based ICSP supports in-circuit firmware updates during vehicle validation cycles.
Được đề xuất
Battery-Powered Remote Controls
The PIC16F819T-E/SO fits handheld remote controls (TV, garage-door, RF key fobs) where 5 V supply is convenient from USB charging and nanoWatt sleep extends standby to years on a single coin cell. The 16 I/O pins drive IR LEDs, button matrices, and bi-directional RF modules. 3.5 KB Flash holds IR protocol libraries (NEC, RC5) plus user-customisation logic. Wide -40 to +125 °C range tolerates outdoor and automotive cabin environments.
Được đề xuất
LED Lighting Drivers
The PIC16F819T-E/SO drives multi-channel LED strings via PWM outputs derived from its 16-bit timer/capture/compare peripheral, enabling individually programmable colour-mixing or dim curves. The 10-bit ADC samples photodiodes or potentiometers for closed-loop brightness feedback. nanoWatt sleep drops standby draw in smart-bulb designs to meet EU standby regulations below 0.5 W, and 256 bytes EEPROM stores last user-set brightness after power-down.
Được đề xuất
IoT Sensor Nodes (UART/MQTT Gateway Side)
On the wired side of an IoT sensor network, the PIC16F819T-E/SO aggregates UART-attached digital sensors and bridges them to a Wi-Fi/Ethernet gateway through its MSSP (I²C/SPI) and USART. The 256-byte RAM and 3.5 KB Flash fit small protocol conversion (Modbus to JSON) tasks. The -40 to +125 °C tolerance lets it sit inside outdoor enclosures with minimal derating across seasons and latitudes.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F819T-E/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 | PIC16F819-I/SO | PIC16F819-E/SO | PIC16F819T-I/SO | PIC16F88-I/SO | PIC16F818-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC | 18-SOIC (same) | 18-SOIC (same) | 18-SOIC (same) | 18-SOIC (same) | 18-SOIC (same) |
| Flash Program Memory | 3.5 KB (2K x 14) | 3.5 KB | 3.5 KB | 3.5 KB | 7 KB (+100%) | 1.75 KB (-50%) |
| RAM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 368 bytes (+44%) | 128 bytes (-50%) |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 64 bytes (-75%) |
| Maximum CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating Temperature | -40 °C to +125 °C (E grade) | -40 °C to +85 °C (I grade) | -40 °C to +125 °C (E grade) | -40 °C to +85 °C (I grade) | -40 °C to +85 °C (I grade) | -40 °C to +85 °C (I grade) |
| Shipping Format | Tape & Reel (T suffix) | Tube | Tube | Tape & Reel | Tube | Tube |
Bảo phân biệt quan trọng
- Tape-and-Reel format at extended industrial temperature (vsPIC16F819-I/SO)
- Doubled Flash and RAM headroom (vsPIC16F818-I/SO)
- EEPROM retained vs PIC16F818 alternative (vsPIC16F818-I/SO)
Ghi chú thiết kế
Place a 100 nF X7R ceramic bypass capacitor directly across VDD (pin 14) and VSS (pin 5) leads within 5 mm of the package to suppress switching noise from the internal oscillator. Add a bulk 10 uF tantalum or aluminium-polymer capacitor near the IC. For sleep-mode designs using nanoWatt Technology, the supply current drops below 1 µA but the voltage regulator still needs that bypass; otherwise VDD bounce can wake the MCU spuriously. Estimated: at 20 MHz and 5 V, IDD is ~7 mA at full code execution per the Microchip datasheet DC characteristics.
Route the ICSP clock (PGC, pin 12) and data (PGD, pin 13) traces together, straight and short, ideally with a guarded ground plane between them and any RF traces. Keep the MCLR/RA5 line free of high-current switching. Use a 10 kΩ pull-up on MCLR (if not used as I/O) and a 4.7 kΩ pull-up on RA5 to avoid in-circuit serial programming failures. Decoupling the ICSP pins helps the PICkit 4 in-circuit programmer operate reliably at 5 V.
Do not drive PORTB pins beyond the 5.5 V absolute maximum even when the rest of the system is 12 V or higher; clamp with a series resistor or level translator. Watch ADC sourcing: the PIC16F819 ADC is ratiometric with VDD, so a noisy supply appears as noisy ADC readings - digitise with averaging or use a low-impedance reference (e.g., MCP1525). When using the internal 8 MHz oscillator, calibrate OSCCAL on a per-unit basis or your UART timing may drift by ±2 % from the nominal 5 MIPS.
The 18-SOIC package has theta_JA of approximately 70 °C/W in still air (per JEDEC EIA/JESD51 measurement). At maximum 20 MHz and 5 V, the device burns ~35 mW worst case, so junction rise is only ~2.5 °C. For designs where the MCU shares a hot PCB with power components, ensure that the ground pad path keeps the case at ambient plus a small margin. The 'E' grade (-40 to +125 °C) does NOT mean the die runs hot; the upper limit is for the operating environment, not internal dissipation.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC16F15324-Q1 or PIC16F18855-Q1 for production automotive. Lead-free, halogen-free, conflict-mineral compliant per Microchip supplier declarations.