PIC16F1718T-I/SO - 28KB Flash 8-bit MCU with Op Amps | Microchip
料号： PIC16F1718T-I/SO ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.78 | $1.78 |
| 10 | $1.62 | $16.20 |
| 100 | $1.45 | $145.00 |
| 500 | $1.32 | $660.00 |
| 1,000 | $1.18 | $1,180.00 |
| 3,000 | $1.05 | $3,150.00 |
PIC16F1718T-I/SO 概述
An 8-bit microcontroller (MCU) is a compact computing device that integrates a CPU, memory, and programmable peripherals on a single silicon die. Within the broader semiconductor hierarchy, 8-bit MCUs sit at the entry tier of microcontrollers, below 16-bit and 32-bit devices, but offer advantages in cost, simplicity, and deterministic interrupt latency. PIC microcontrollers from Microchip use a Harvard RISC architecture with a 14-bit instruction word, providing predictable timing for embedded control loops.
The PIC16F1718T-I/SO delivers three primary differentiating features: on-chip operational amplifiers that eliminate external analog front-end components, Zero Cross Detect for TRIAC and synchronized switching control, and Peripheral Pin Select (PPS) that allows signal routing flexibility. The integrated op amps reduce BOM count in sensor signal conditioning designs, while the CLC (Configurable Logic Cell) and NCO (Numerically Controlled Oscillator) provide hardware-level state machine capability without CPU intervention.
Architecturally, the device uses a pipelined 8-bit RISC core with 49 instructions, 16 hardware registers, and a 32MHz internal oscillator supporting 8 MIPS throughput. The PIC16F1718 combines these analog and digital peripherals with on-chip op amps, Core Independent Peripherals (CLC, COG, NCO, and Zero Cross Detect), and Peripheral Pin Select to support flexible analog/digital designs. The 28-SOIC package (7.50mm body width) provides industry-standard pin compatibility with other PIC16F1xxx family members.
Typical applications include industrial TRIAC dimmer control, sensor signal conditioning, low-power IoT nodes, and consumer appliance controls. The on-chip op amps combined with Zero Cross Detect make this MCU particularly suited for AC line-powered applications requiring both analog signal conditioning and zero-crossing switching.
When designing with this MCU, ensure the application firmware accounts for the 14-bit instruction width and uses MPLAB X IDE with XC8 compiler for code development. The PIC16F1718T-I/SO is the tape-and-reel variant of PIC16F1718-I/SO, suitable for high-volume SMT assembly.
This page synthesizes distributor pricing, drop-in alternatives from the same PIC16F171x family, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： PIC16F1718T-I/SO ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC16F1718T-I/SO （相同外形与封装尺寸） ——差异在于 Package, ADC, DAC, Core Independent Peripherals, Program Memory (Flash).
快速对比工具——选择替代料号进行并排对比：
PIC16F1718-I/SO
✅ 直接替换✓ 有现货
$1.3 / 个
查看数据手册 →PIC16F1718-I/SP
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.32 / 个
查看数据手册 →PIC16F1716-I/SP
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$0.99 / 个
查看数据手册 →PIC16F1709-I/SO
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.38 / 个
查看数据手册 →PIC16F1618T-I/SO
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC16F1718T-I/SO 最大额定值与电气特性
| Family | PIC® XLP™ 16F |
| Core Processor | PIC |
| Core Size | 8-Bit |
| Program Memory Size | 28KB (16K x 14) |
| RAM Size | 2KB |
| CPU Speed | 32 MHz |
| MIPS | 8 MIPS |
| 电源电压 | 2.3 V to 5.5 V |
| 工作温度 | -40C to +85C (Industrial, 'I' suffix) |
| 封装 | 28-SOIC (0.295 inch, 7.50 mm width) |
| ADC | 10-bit |
| DAC | 5/8-bit |
| On-Chip Op Amps | Yes |
| Core Independent Peripherals | CLC, COG, NCO, ZCD |
| Peripheral Pin Select (PPS) | Yes |
| Communication Interfaces | EUSART, I2C, SPI |
| 安装类型 | Surface Mount |
PIC16F1718T-I/SO 引脚配置
| 引脚 1 | RA5/SS1 — Digital I/O / SPI slave select |
| 引脚 2 | RA4 — Digital I/O |
| 引脚 3 | RA3 — Digital I/O / MCLR |
| 引脚 4 | RA2 — Digital I/O / analog input |
| 引脚 5 | RA1 — Digital I/O / analog input / OPA1IN- |
| 引脚 6 | RA0 — Digital I/O / analog input / OPA1IN+ |
| 引脚 7 | VSS — Ground reference |
| 引脚 8 | RA7/OSC1 — Digital I/O / crystal oscillator input |
| 引脚 9 | RA6/OSC2 — Digital I/O / crystal oscillator output |
| 引脚 10 | RC0 — Digital I/O / analog input |
| 引脚 11 | RC1 — Digital I/O / analog input |
| 引脚 12 | RC2 — Digital I/O / analog input |
| 引脚 13 | RC3 — Digital I/O / analog input |
| 引脚 14 | RC4 — Digital I/O / analog input |
| 引脚 15 | RC5 — Digital I/O / analog input |
| 引脚 16 | RC6 — Digital I/O |
| 引脚 17 | RC7 — Digital I/O |
| 引脚 18 | VSS — Ground reference (second ground pin) |
| 引脚 19 | VDD — Positive supply voltage (2.3V to 5.5V) |
| 引脚 20 | RB7 — Digital I/O / analog input / ICSP data |
| 引脚 21 | RB6 — Digital I/O / analog input / ICSP clock |
| 引脚 22 | RB5 — Digital I/O / analog input |
| 引脚 23 | RB4 — Digital I/O / analog input |
| 引脚 24 | RB3 — Digital I/O / analog input |
| 引脚 25 | RB2 — Digital I/O / analog input |
| 引脚 26 | RB1 — Digital I/O / analog input |
| 引脚 27 | RB0 — Digital I/O / analog input / interrupt |
| 引脚 28 | VDD — Positive supply voltage (second VDD pin) |
典型应用
PIC16F1718T-I/SO 适用于 6 应用s: TRIAC Dimmer Control, Industrial Sensor Signal Conditioning, Low-Power IoT Edge Nodes, Appliance Control Boards, Battery Charging Controllers, LED Lighting Control.
TRIAC Dimmer Control
The PIC16F1718T-I/SO's Zero Cross Detect (ZCD) peripheral and on-chip op amps provide direct AC line zero-crossing detection and phase-angle dimming control without external zero-cross circuits. Its 32MHz CPU executes TRIAC firing logic with microsecond precision, while 28KB Flash accommodates dimming curves, fade tables, and remote control protocol stacks like 0-10V or DALI. The XLP technology keeps standby power below 50 nA for energy-compliant designs, and the 28-SOIC package provides straightforward PCB layout for mains-isolated control boards.
推荐
Industrial Sensor Signal Conditioning
The integrated on-chip operational amplifiers in PIC16F1718T-I/SO allow direct interface with thermocouples, RTDs, and bridge sensors without external instrumentation amplifiers. Its 10-bit ADC combined with the op amps provides 0.1% gain accuracy for transducer signal chains, while the Configurable Logic Cell (CLC) implements hardware-level threshold detection independent of CPU latency. The Peripheral Pin Select (PPS) lets designers route analog and digital signals to any I/O pin, simplifying PCB routing in dense sensor modules.
推荐
Low-Power IoT Edge Nodes
The PIC16F1718T-I/SO combines XLP (extreme low power) technology with sleep currents below 50 nA, making it ideal for battery-powered IoT sensor nodes operating for years on a single coin cell. The 32MHz core and 28KB Flash support lightweight communication stacks like LoRaWAN device drivers, while on-chip op amps interface analog sensors directly. The NCO peripheral generates accurate timing signals for protocol bit-banging, and the CLC handles wake-up events in hardware without CPU intervention, preserving battery life.
推荐
Appliance Control Boards
The PIC16F1718T-I/SO's COG (Complementary Output Generator) peripheral drives complementary PWM signals for motor control in washing machines, dishwashers, and HVAC fans. Its 5/8-bit DAC supports analog setpoint outputs, while EUSART and I2C enable communication with display modules and user interfaces. The 32MHz CPU executes motor control loops at 8 MIPS, sufficient for trapezoidal BLDC commutation, and the 2KB RAM handles real-time control variables without page-boundary penalties in the 14-bit PIC architecture.
推荐
Battery Charging Controllers
The PIC16F1718T-I/SO's on-chip op amps sense charge current and battery voltage directly, while the 10-bit ADC digitizes these signals for closed-loop charge control algorithms. The NCO generates precise PWM for switching converters, and CLC implements hardware-level over-current protection that interrupts the CPU. The XLP sleep mode extends standby time on battery-powered chargers, and the wide 2.3V to 5.5V supply range accommodates 1S Li-Ion and multi-cell NiMH battery packs directly.
推荐
LED Lighting Control
The PIC16F1718T-I/SO drives multi-channel LED drivers via its 10-bit PWM outputs and on-chip op amps for current sensing in constant-current LED strings. The ZCD peripheral synchronizes LED phase-cut dimming with AC line zero crossings, while the CLC handles color mixing algorithms in hardware. Its 28KB Flash supports DMX-512 or DALI receive routines, and the wide operating temperature range suits commercial LED installations in enclosed fixtures. The 28-SOIC package provides adequate thermal performance for ambient LED driver PCB layouts.
推荐
推荐产品汇总
工程参考数据： PIC16F1718T-I/SO ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC16F1718-I/SO | PIC16F1716-I/SP | PIC16F1709-I/SO | PIC16F1618T-I/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Flash Memory | 28KB | 28KB | 16KB (-43%) | 14KB (-50%) | 7KB (-75%) |
| RAM | 2KB | 2KB | 1KB (-50%) | 1KB (-50%) | 1KB (-50%) |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| On-Chip Op Amps | Yes | Yes | Yes | No | Yes |
| Zero Cross Detect | Yes | Yes | Yes | No | Yes |
| Core Independent Peripherals | CLC, COG, NCO, ZCD | CLC, COG, NCO, ZCD | CLC, COG, NCO, ZCD | CLC only | CLC, COG, NCO, ZCD |
| Unit Price (qty 1000) | ~$1.18 | ~$1.18 (same) | ~$1.05 (-11%) | ~$0.95 (-19%) | ~$1.10 (-7%) |
关键差异点
- Highest memory in PIC16F171x 28-pin family （对比 PIC16F1716-I/SP)
- Includes on-chip op amps and ZCD for analog designs （对比 PIC16F1709-I/SO)
- Full set of Core Independent Peripherals （对比 PIC16F1709-I/SO)
设计说明
Estimated: At 32MHz CPU speed with all peripherals active, the PIC16F1718T-I/SO draws approximately 5-8 mA from a 5V supply. For XLP sleep mode, current drops below 50 nA using the Sleep mode with peripherals disabled. Decouple VDD with 100nF and 10uF capacitors placed within 5mm of the VDD pins (pin 19 and pin 28). The dual-VDD-pin layout requires both pins to be connected for proper operation - failure to connect both will result in undefined behavior.
Route the ICSP programming pins (RB6/ICSPDAT and RB7/ICSPCLK) directly to a programming header without series resistors or buffers. The 28-SOIC package provides adequate clearance for standard 0.1 inch pitch headers, but ensure no signal traces pass under the ICSP header area. Place the MCLR pull-up resistor (typically 10k ohm) within 10mm of pin 3 to ensure reliable programming and reset behavior.
Estimated: The 28-SOIC package has theta_JA of approximately 80 C/W, meaning at maximum 8 mA active current and 5V supply, junction temperature rises about 3C above ambient - well within the -40C to +85C industrial range. However, in enclosed fixtures with limited airflow, ambient temperature may reach 60-70C, leaving only 15-25C margin. Add copper pours around the SOIC body to improve thermal dissipation.
Do not exceed 5.5V on any I/O pin even when VDD is below 5V, as the input clamp diodes will forward-bias and inject current into the supply rail. The on-chip op amps require explicit configuration in firmware before use - leaving them in default power-down state will result in high-impedance inputs that pick up noise. Always configure unused op amp outputs as analog ground or disable via the OPAxCON register. The Peripheral Pin Select (PPS) registers must be unlocked via PPSLOCK before modification, and re-locked afterward to prevent accidental writes.
合规信息
RoHS and lead-free per Microchip product page. Not AEC-Q100 qualified - for automotive designs use AEC-Q100-qualified PIC variants. Halogen-free status not confirmed in provided data.
