PIC16F1718T-I/SO - 28KB Flash 8-bit MCU with Op Amps | Microchip
MPN: PIC16F1718T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 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 Overview
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.
Drop-in alternatives for PIC16F1718T-I/SO — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16F1718T-I/SO (same form factor and footprint) — differing in ADC, Package, DAC, Communication, Core Independent Peripherals.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1718-I/SO
✅ Drop-In✓ In Stock
$1.3 / Unit
View Datasheet →PIC16F1718-I/SP
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.32 / Unit
View Datasheet →PIC16F1716-I/SP
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.99 / Unit
View Datasheet →PIC16F1709-I/SO
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.38 / Unit
View Datasheet →PIC16F1618T-I/SO
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F1718T-I/SO Maximum Ratings & Electrical Characteristics
| 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 |
| Supply Voltage | 2.3 V to 5.5 V |
| Operating Temperature | -40C to +85C (Industrial, 'I' suffix) |
| Package | 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 |
| Mounting Type | Surface Mount |
PIC16F1718T-I/SO Pin Configuration
| Pin 1 | RA5/SS1 — Digital I/O / SPI slave select |
| Pin 2 | RA4 — Digital I/O |
| Pin 3 | RA3 — Digital I/O / MCLR |
| Pin 4 | RA2 — Digital I/O / analog input |
| Pin 5 | RA1 — Digital I/O / analog input / OPA1IN- |
| Pin 6 | RA0 — Digital I/O / analog input / OPA1IN+ |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA7/OSC1 — Digital I/O / crystal oscillator input |
| Pin 9 | RA6/OSC2 — Digital I/O / crystal oscillator output |
| Pin 10 | RC0 — Digital I/O / analog input |
| Pin 11 | RC1 — Digital I/O / analog input |
| Pin 12 | RC2 — Digital I/O / analog input |
| Pin 13 | RC3 — Digital I/O / analog input |
| Pin 14 | RC4 — Digital I/O / analog input |
| Pin 15 | RC5 — Digital I/O / analog input |
| Pin 16 | RC6 — Digital I/O |
| Pin 17 | RC7 — Digital I/O |
| Pin 18 | VSS — Ground reference (second ground pin) |
| Pin 19 | VDD — Positive supply voltage (2.3V to 5.5V) |
| Pin 20 | RB7 — Digital I/O / analog input / ICSP data |
| Pin 21 | RB6 — Digital I/O / analog input / ICSP clock |
| Pin 22 | RB5 — Digital I/O / analog input |
| Pin 23 | RB4 — Digital I/O / analog input |
| Pin 24 | RB3 — Digital I/O / analog input |
| Pin 25 | RB2 — Digital I/O / analog input |
| Pin 26 | RB1 — Digital I/O / analog input |
| Pin 27 | RB0 — Digital I/O / analog input / interrupt |
| Pin 28 | VDD — Positive supply voltage (second VDD pin) |
Typical Applications
PIC16F1718T-I/SO is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1718T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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%) |
Key Differentiators
- Highest memory in PIC16F171x 28-pin family (vs PIC16F1716-I/SP)
- Includes on-chip op amps and ZCD for analog designs (vs PIC16F1709-I/SO)
- Full set of Core Independent Peripherals (vs PIC16F1709-I/SO)
Design Notes
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.
Compliance Information
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.
