PIC16F818T-E/SO - 8-bit 20MHz 1.75KB Flash MCU | Microchip
Артикул: PIC16F818T-E/SO ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $3.45 | $3,45 |
| 10 | $3.1 | $31,00 |
| 100 | $2.78 | $278,00 |
| 500 | $2.49 | $1.245,00 |
| 1.000 | $2.22 | $2.220,00 |
PIC16F818T-E/SO Обзор
What is a PIC16F 8-bit microcontroller? The PIC16F family is Microchip's mid-range 8-bit RISC microcontroller line that uses a Harvard bus with separate program and data paths, 35 single-word instructions, and a 14-bit instruction word. It belongs to the larger hierarchy of microcontroller -> 8-bit MCU -> embedded controller -> semiconductor IC, and is widely used in cost-sensitive embedded designs where deterministic execution, low power (nanoWatt technology), and easy in-system reprogrammability are required.
Key features include 128 bytes of SRAM data memory, 128 bytes of EEPROM data memory, an internal 8MHz oscillator, a 10-bit ADC with up to 5 channels, two 8-bit timers plus one 16-bit timer, a Capture/Compare/PWM (CCP) module, an Enhanced CCP (ECCP) module on selected pins, an MSSP (SPI/I2C) peripheral, a USART, and nanoWatt power management with multiple sleep modes. These peripherals make the part suitable for sensor conditioning, motor control signal generation, and serial communication master/slave tasks.
The PIC16F818 architecture uses a 14-bit instruction word, 8-level hardware stack, and an interrupt controller supporting both core and peripheral interrupt sources. The internal 8MHz oscillator can be switched at runtime, allowing the firmware to trade execution speed for supply current in battery-powered applications using the nanoWatt sleep and doze modes.
Typical applications include automotive body electronics, sensor interfaces (temperature, pressure, position), LED lighting controllers, low-end motor control (fans, small pumps, brushed DC), battery chargers, smart thermostats, and consumer appliances. The -40C to +125C operating range also makes it suitable for industrial control panels and under-hood automotive subsystems.
When designing with this device, ensure that the ICSP/ICD programming pins (RB6/RB7) are not loaded by external circuitry that prevents in-circuit programming. Decoupling VDD with a 100nF ceramic capacitor placed within 5mm of the supply pins is required, and unused I/O pins should be configured as outputs low to minimize current consumption in sleep mode.
This page synthesizes distributor stock and pricing data, drop-in alternative MPNs, and practical design guidance that is not consolidated in the manufacturer datasheet (DS39598E).
Аналоги без доработки для PIC16F818T-E/SO — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с PIC16F818T-E/SO (тот же форм-фактор и посадочное место) — отличается по Internal Oscillator, ADC, Package, Core Architecture, I/O Pins.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PIC16F818-E/SO
✅ Прямая замена✓ В наличии
$2.41 / шт.
Открыть даташит →PIC16F818T-I/SO
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PIC16F818-I/SO
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PIC16F818-E/P
✅ Прямая замена✓ В наличии
$2.65 / шт.
Открыть даташит →PIC16F818T-I/SS
✅ Прямая замена✓ В наличии
$1.92 / шт.
Открыть даташит →PIC16F818-E/ML
✅ Прямая замена✓ В наличии
$1.73 / шт.
Открыть даташит →PIC16F818T-E/SO Максимальные параметры и электрические характеристики
| Core Architecture | PIC16 8-bit RISC |
| Instruction Set | 35 single-word instructions, 14-bit instruction word |
| Program Memory (Flash) | 1.75 KB (1K x 14) |
| Data Memory (SRAM) | 128 bytes |
| Data Memory (EEPROM) | 128 bytes |
| Maximum CPU Frequency | 20 MHz (200 ns instruction cycle) |
| Internal Oscillator | 8 MHz |
| ADC | 10-bit, up to 5 channels |
| Timers | 2 x 8-bit + 1 x 16-bit |
| CCP Modules | 1 x CCP + 1 x ECCP |
| Communication Peripherals | MSSP (SPI/I2C), USART |
| I/O Pins | 16 (with interrupt-on-change) |
| Диапазон рабочих температур | -40 C to +125 C (E grade) |
| Корпус | 18-pin SOIC (SO), Tape & Reel |
| Тип монтажа | Surface Mount |
| Power-Saving Modes | nanoWatt Technology (Sleep, Idle, doze modes) |
Конфигурация выводов PIC16F818T-E/SO
| Контакт 1 | RA3/MCLR/VPP — GPIO / Master Clear reset (active low) / ICSP programming voltage |
| Контакт 2 | RA0/AN0 — GPIO / Analog input channel 0 |
| Контакт 3 | RA1/AN1 — GPIO / Analog input channel 1 |
| Контакт 4 | RA2/AN2/CVREF — GPIO / Analog input channel 2 / Comparator Voltage Reference |
| Контакт 5 | RA4/T0CKI — GPIO / Timer0 clock input (open-drain) |
| Контакт 6 | RA5/AN4/SS — GPIO / Analog input channel 4 / SPI Slave Select |
| Контакт 7 | VSS — Ground |
| Контакт 8 | RA7/OSC1/CLKI — GPIO / Crystal oscillator input / External clock input |
| Контакт 9 | RA6/OSC2/CLKO — GPIO / Crystal oscillator output / Clock output |
| Контакт 10 | RC0/T1CKI — GPIO / Timer1 clock input |
| Контакт 11 | RC1/CCP2 — GPIO / CCP2 PWM output |
| Контакт 12 | RC2/CCP1 — GPIO / CCP1 PWM output |
| Контакт 13 | RC3/SCK/SCL — GPIO / SPI clock / I2C clock |
| Контакт 14 | RC4/SDI/SDA — GPIO / SPI data in / I2C data |
| Контакт 15 | RC5/SDO — GPIO / SPI data out |
| Контакт 16 | RC6/TX/CK — GPIO / USART TX / USART synchronous clock |
| Контакт 17 | RC7/RX/DT — GPIO / USART RX / USART synchronous data |
| Контакт 18 | VDD — Positive supply voltage |
Типичное применение
PIC16F818T-E/SO подходит для 6 применениеs: Automotive Body Electronics, Sensor Interface and Signal Conditioning, Low-End Motor and Fan Speed Control, LED Lighting Controllers, Battery Chargers and Power Management, Industrial Control Panels and Smart Thermostats.
Automotive Body Electronics
The PIC16F818T-E/SO is well-suited to automotive body and interior modules because of its -40C to +125C extended temperature grade and 1.75KB of Flash that comfortably holds typical lighting, mirror-control, or seat-position firmware. Its 10-bit ADC with five channels can read multiple sensor inputs (temperature, position, light level), and the ECCP module generates PWM signals for dimming incandescent or driving LED strings at up to 10-bit resolution. The MSSP peripheral handles SPI or I2C communication with companion sensors or LIN transceiver ICs. Compared with the PIC16F818-I/SO (industrial grade), the 'E' suffix parts are qualified for the wider automotive thermal envelope and stress tests per Microchip's automotive-grade flow.
Рекомендуется
Sensor Interface and Signal Conditioning
The PIC16F818T-E/SO offers a 10-bit ADC with up to 5 analog channels plus digital I/O sufficient for conditioning and linearizing signals from thermistors, photodiodes, or pressure transducers. Its 20MHz CPU runs the calibration, averaging, and I2C upload loops in real time, while the 128-byte EEPROM stores per-unit calibration coefficients that survive power cycles. Compared with a bare op-amp signal chain, the integrated ADC and EEPROM cut BOM cost and PCB area. The 'E' temperature grade lets the same firmware operate in outdoor industrial enclosures without re-qualification.
Рекомендуется
Low-End Motor and Fan Speed Control
The PIC16F818T-E/SO's ECCP module generates the PWM output that drives a brushed DC motor, small BLDC fan, or solenoid; the 16-bit timer with input capture can measure tachometer feedback for closed-loop RPM regulation. Its nanoWatt sleep modes drop the supply current to microamps between adjustments, extending battery life in portable fans or smart-vent applications. Compared with a dedicated motor-driver IC, the PIC16F818T-E/SO adds programmability for soft-start, ramp profiles, and fault detection. The -40C to +125C E grade is required for under-hood automotive cooling-fan modules.
Рекомендуется
LED Lighting Controllers
The PIC16F818T-E/SO drives multi-channel LED strings using its ECCP and CCP PWM outputs with 10-bit resolution, enabling smooth dimming and color-temperature mixing. Its 10-bit ADC reads ambient light sensors for daylight harvesting, while the USART or MSSP peripherals accept DMX-512, DALI, or proprietary lighting-control protocols. With 1.75KB of Flash, the part stores complex lighting scenes, fade curves, and energy-usage statistics in 128-byte EEPROM. Compared with a pure analog LED controller, the MCU approach supports OTA updates via ICSP without board rework.
Рекомендуется
Battery Chargers and Power Management
The PIC16F818T-E/SO monitors battery voltage and current through its 10-bit ADC while the ECCP PWM regulates the charging buck or boost converter. Its 128-byte EEPROM stores charge profile parameters (CC/CV thresholds, termination current, temperature compensation) that are specific to each cell chemistry. nanoWatt sleep reduces quiescent current to microamps when the device is idle, preserving battery shelf life. Compared with dedicated charger ASICs, the MCU approach supports firmware updates to add new chemistries or USB-PD negotiation without hardware change.
Рекомендуется
Industrial Control Panels and Smart Thermostats
The PIC16F818T-E/SO is widely deployed in industrial HMI panels and residential smart thermostats where the 1.75KB Flash stores menu logic, the 10-bit ADC reads thermistor inputs, and the MSSP/I2C peripheral drives an OLED or character-LCD display. Its -40C to +125C extended grade handles unheated warehouse installations and rooftop HVAC equipment. Compared with the industrial-grade PIC16F818T-I/SO, the 'E' suffix parts guarantee operation across the wider thermal envelope required by HVAC outdoor units. The 20MHz CPU delivers fast enough response that mechanical button-press feedback feels instant.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC16F818T-E/SO — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PIC16F818-E/SO | PIC16F818T-I/SO | PIC16F818-I/SO | PIC16F818T-I/SS | PIC16F818-E/ML |
|---|---|---|---|---|---|---|
| Package | 18-SOIC (SO) | 18-SOIC (SO) - same | 18-SOIC (SO) - same | 18-SOIC (SO) - same | 20-SSOP - different | 20-QFN - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB |
| Data Memory (SRAM) | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Maximum CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Temperature Grade | E (-40C to +125C) | E (-40C to +125C) | I (-40C to +85C) | I (-40C to +85C) | I (-40C to +85C) | E (-40C to +125C) |
| Packaging Form | Tape & Reel (T&R) | Tube | Tape & Reel | Tube | Tape & Reel | Tube |
| ADC | 10-bit, 5 channels | 10-bit, 5 channels | 10-bit, 5 channels | 10-bit, 5 channels | 10-bit, 5 channels | 10-bit, 5 channels |
| Approx. Unit Price (USD, qty 100) | $2.78 | ~$2.65 (tube, slightly cheaper than T&R) | ~$2.55 (I grade typically 5-10% cheaper) | ~$2.40 (I grade tube, lowest cost) | ~$2.60 (SSOP package) | ~$2.85 (QFN package, slightly more) |
Ключевые отличия
- Extended -40C to +125C temperature grade with automotive qualification (против PIC16F818T-I/SO (Industrial -40C to +85C))
- Tape & Reel packaging for production SMT assembly (против PIC16F818-E/SO (Tube packaging, prototype form))
- Industry-standard PIC16 mid-range core with 35 instructions and ICSP (против PIC16F84A (legacy 18-pin Flash MCU, predecessor))
Заметки по проектированию
Decouple VDD (pin 18) with a 100 nF X7R ceramic capacitor placed within 5 mm of the IC pins, and add a 10 uF bulk capacitor on the same rail for transient load support. The nanoWatt sleep mode reduces supply current to approximately 1 uA at 3V, but the bulk cap must recharge when waking, so size it accordingly. Always include a 10 kohm pull-up on MCLR (pin 1) to VDD to ensure a defined reset state at power-up.
Do not load the ICSP pins (RB6/RB7, mapped to RA6/RA7 in 18-pin parts) with circuitry that prevents in-circuit serial programming - keep these traces short and avoid series resistors above 100 ohm. Brown-out detection must be enabled in the configuration words (BOREN = 1) for automotive and industrial designs, otherwise a slow-rising VDD can latch the part into undefined states. Also configure unused I/O pins as outputs low to minimize sleep current.
Estimated: At 20 MHz, 5V operation in SOIC-18 package, typical active supply current is approximately 6-8 mA and quiescent dissipation is around 30-40 mW. The 18-pin SOIC has a theta_JA of approximately 85 C/W on a standard 4-layer JEDEC test PCB; at 25 C ambient this yields about 3-4 C rise above ambient, well within the 125 C maximum junction rating. No heatsink is required for normal operation.
Place the crystal (or external clock source) within 5 mm of pins 8 (OSC1) and 9 (OSC2) and surround the oscillator traces with a ground guard ring to reduce EMI coupling. If using the internal 8 MHz oscillator, leave OSC1 floating or tie to GND, and configure the FOSC configuration bits accordingly. Keep analog signal traces (AN0-AN4) short and routed away from PWM switching signals to minimize ADC noise coupling - a ground plane on layer 2 is recommended for SOIC-18 designs.
Информация о соответствии
RoHS and REACH status not explicitly confirmed in retrieved data; [DATA_NEEDED]. Conflict Minerals: Microchip publishes a CMRT declaration indicating compliance. AEC-Q100 qualification status for the 'E' grade is not explicitly confirmed; consult Microchip product page for automotive qualification details.
