PIC16F1618T-I/SS - 8-Bit 32MHz MCU 7KB Flash 20-SSOP | Microchip
MPN: PIC16F1618T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.41 | $141.00 |
| 500 | $1.2 | $600.00 |
| 1,000 | $1.02 | $1,020.00 |
PIC16F1618T-I/SS Overview
What is a PIC16 microcontroller? A PIC16 is an 8-bit reduced-instruction-set computing (RISC) microcontroller from Microchip's mid-range family, designed for deterministic embedded control. Within the broader taxonomy, PIC16 sits at: PIC16 -> PIC mid-range MCU -> 8-bit microcontroller -> embedded MCU -> semiconductor. The PIC16F1618 adds peripheral integrations such as Zero-Cross Detection (ZCD), Windowed Watchdog Timer (WWDT), Cyclic Redundancy Check (CRC) with memory scan, Complementary Waveform Generator (CWG), Configurable Logic Cell (CLC), and a 24-bit Signal Measurement Timer (SMT) - features oriented toward small-motor and general-purpose control.
Key features include 10-bit ADC, five CCP/SCCP/PWM modules, two I2C/SPI/UART (EUSART) capable peripherals, 18 enhanced I/O pins, and multiple timer/counter blocks. XLP technology keeps active current low while supporting sleep currents in the nanoampere range with retention. The on-chip voltage reference and temperature indicator further reduce external part count.
Architecturally, the device employs a Harvard-style RISC pipeline with a 14-bit instruction word, enabling single-cycle execution on most instructions and predictable interrupt latency. The integrated peripheral pin-select (PPS) remapping grants flexible pin assignment without board re-spins. Code protection, low-voltage programming, and ICSP allow production-grade in-circuit firmware updates.
Typical applications include small brushless DC motor control, LED lighting controllers, sensor signal conditioning, battery-powered IoT nodes, and home appliances. The XLP feature set is particularly suited to remote controls, smoke detectors, and other energy-harvesting or long-life battery products.
When designing with this part, leverage Microchip's MPLAB X IDE and the XC8 compiler for development, and pay attention to the SSOP-20 thermal envelope versus the QFN equivalent for higher-current applications. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC16F1618T-I/SS — 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 PIC16F1618T-I/SS (same form factor and footprint) — differing in ADC, Package, Program Memory (Flash), Core Architecture, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1618-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1618-E/SS
✅ Drop-In✓ In Stock
$0.85 / Unit
View Datasheet →PIC16F1618T-I/SO
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F1718T-I/SS
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F15344-I/SS
✅ Drop-In✓ In Stock
$0.79 / Unit
View Datasheet →PIC16F15254-I/SS
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.55 / Unit
View Datasheet →PIC16F1618T-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC16 enhanced mid-range |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 512 bytes |
| CPU Speed (Max) | 32 MHz |
| Operating Voltage Range | 2.3 V to 5.5 V |
| ADC | 10-bit, with computation |
| Timers | Includes 24-bit SMT, WDT, WWDT |
| PWM / CCP | CCP, SCCP, PWM modules |
| Communication | EUSART, I2C, SPI |
| I/O Pins | 18 enhanced |
| Internal Oscillator | 32 MHz |
| Low-Power Technology | XLP (eXtreme Low Power) |
| Special Peripherals | CLC, ZCD, CRC, CWG, NCO |
| Package | 20-pin SSOP (5.30 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) |
| RoHS Status | Compliant |
PIC16F1618T-I/SS Pin Configuration
| Pin 1 | VDD — Positive power supply |
| Pin 2 | RA5 — Bidirectional I/O / analog input |
| Pin 3 | RA4 — Bidirectional I/O / analog input |
| Pin 4 | RA3/MCLR/VPP — I/O / Master Clear / programming voltage |
| Pin 5 | RC5 — Bidirectional I/O / analog input |
| Pin 6 | RC4 — Bidirectional I/O / analog input |
| Pin 7 | RC3 — Bidirectional I/O / analog input |
| Pin 8 | RC2 — Bidirectional I/O / analog input |
| Pin 9 | RC1 — Bidirectional I/O / analog input |
| Pin 10 | RC0 — Bidirectional I/O / analog input |
| Pin 11 | RA2 — Bidirectional I/O / analog input |
| Pin 12 | RA1 — Bidirectional I/O / analog input |
| Pin 13 | RA0 — Bidirectional I/O / analog input |
| Pin 14 | RC7 — Bidirectional I/O |
| Pin 15 | RC6 — Bidirectional I/O |
| Pin 16 | RB7 — Bidirectional I/O / programming data |
| Pin 17 | RB6 — Bidirectional I/O / programming clock |
| Pin 18 | RB5 — Bidirectional I/O / analog input |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive power supply |
Typical Applications
PIC16F1618T-I/SS is suitable for 7 applications: Brushless DC Motor Control, LED Lighting Controllers, Battery-Powered IoT Sensor Nodes, Home Appliance Control Boards, Power Factor Correction (PFC) Stages, Consumer Remote Controls, Industrial Sensor Transmitters.
Brushless DC Motor Control
The PIC16F1618T-I/SS is engineered for cost-sensitive BLDC motor control in appliances, fans, and small pumps. Its Complementary Waveform Generator (CWG) produces dead-band-controlled complementary PWM for driving half-bridge MOSFET gates, while the 24-bit SMT measures rotor speed with sub-microsecond resolution. Zero-Cross Detection (ZCD) simplifies TRIAC phase-angle control in AC fan applications. With 7 KB Flash and 512 B SRAM, firmware fits sensorless start-up routines, current sensing, and protection logic. The 32 MHz CPU executes 8 MIPS, sufficient for 8 kHz control loops. Operating from 2.3 V to 5.5 V and featuring XLP sleep modes below 1 uA, this MCU fits battery-backed or energy-harvesting motor control designs without external voltage regulators.
Recommended
LED Lighting Controllers
Architectural, horticultural, and automotive LED drivers benefit from the PIC16F1618T-I/SS's integrated CLC, NCO, and 10-bit ADC. The NCO generates high-resolution dimming frequencies without CPU intervention, freeing cycles for color-mixing algorithms. The Configurable Logic Cell (CLC) implements hardware-level fault detection and interlocks, bypassing software latency. CWG combined with PWM modules drives high-current MOSFET arrays for RGBW or tunable-white fixtures. With 5.5 V tolerance and 18 I/O pins, the MCU directly interfaces with 0-10 V analog dimmers and DALI control boards. XLP technology enables always-on ambient-light sensing at sub-microamp quiescent current, making it ideal for battery-powered emergency luminaires and IoT lighting gateways.
Recommended
Battery-Powered IoT Sensor Nodes
The PIC16F1618T-I/SS is purpose-built for battery-powered IoT edge nodes with its XLP technology and 2.3 V minimum supply voltage. Sleep currents below 50 nA with RAM retention extend multi-year coin-cell operation for wireless sensor transmitters. The 10-bit ADC with computation performs oversampling and hardware averaging on temperature, humidity, and battery-voltage channels without CPU wake. The CLC and SMT modules handle wake-on-event pulse counting and quadrature decoding for low-power flow meters. EUSART and I2C peripherals connect to sub-GHz transceivers and digital sensors. CRC-with-scan memory integrity check provides tamper detection for metering applications, while 32 MHz HFINTOSC eliminates external crystals to minimize BOM cost and board area.
Recommended
Home Appliance Control Boards
White-goods manufacturers choose the PIC16F1618T-I/SS for washing machines, dishwashers, microwave ovens, and induction cooktops. The MCU's 5.5 V tolerance interfaces directly with 5 V logic from sensor and HMI boards, while the 10-bit ADC digitizes temperature probes and current-sensing shunts. CWG drives TRIAC gates and IGBTs for heating-element control with hardware dead-band, preventing shoot-through. ZCD synchronizes AC zero-cross timing for synchronized TRIAC firing, reducing EMI. The 24-bit SMT captures motor speed feedback from Hall sensors or tachometers. With 7 KB Flash supporting IEC 60730 Class B software diagnostic libraries, the device meets safety requirements for unattended appliance operation while keeping per-unit cost low.
Recommended
Power Factor Correction (PFC) Stages
Boost-type PFC front-ends benefit from the PIC16F1618T-I/SS's 32 MHz MIPS throughput and CLC peripherals for analog-style control loops. The NCO generates frequency-multiplied PWM for interleaved PFC topologies, while the CLC implements peak-current-mode control with hardware-cycle-by-cycle protection. The 10-bit ADC with computation provides average-current-sensing and input-voltage feedforward, achieving high power factor and low THD. CRC-with-scan memory integrity supports safety-critical firmware validation per IEC 60730. With 18 enhanced I/O pins, the MCU handles gate drive, relay control, and auxiliary communication interfaces. The wide 2.3 V to 5.5 V range supports bootstrap supply schemes typically found in PFC stages.
Recommended
Consumer Remote Controls
The PIC16F1618T-I/SS delivers multi-year battery life in TV, set-top, and universal remote controls thanks to XLP technology. Sleep current below 50 nA with wake-on-keypad-change capability allows years of standby operation on two AAA cells. The 10-bit ADC reads battery voltage for low-battery indication without external components. CLC generates IR carrier frequencies for NEC, RC5, and SIRC protocols without software overhead. EUSART enables UART-based remote control extenders. With 7 KB Flash, complex multi-protocol firmware and custom button mappings fit easily. The 20-SSOP package is compact enough for slim remote enclosures while leaving ample I/O for matrix keypads and IR LEDs.
Recommended
Industrial Sensor Transmitters
Loop-powered 4-20 mA sensor transmitters leverage the PIC16F1618T-I/SS's low-power operation and 10-bit ADC with computation for accurate analog signal conditioning. With 2.3 V minimum supply, the MCU operates directly from loop excitation in low-voltage segments. The 24-bit SMT performs precise pulse-width and frequency measurements for flow, level, and pressure transducers. CRC-with-scan ensures firmware integrity for SIL-rated safety installations. CLC implements hardware debouncing and signal conditioning without firmware overhead. With industrial temperature rating (-40C to +85C), the device operates reliably in process-control enclosures. The 20-SSOP package supports compact field-mounting form factors typical in industrial instrumentation.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1618T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1618-I/SS | PIC16F1618-E/SS | PIC16F15344-I/SS | PIC16F1718T-I/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP (5.30 mm) | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Program Memory | 7 KB | 7 KB | 7 KB | 7 KB | 28 KB (+300%) |
| Data SRAM | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 2 KB (+300%) |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| Temperature Range | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C |
| Special Peripherals | CWG, ZCD, NCO, CLC, SMT | CWG, ZCD, NCO, CLC, SMT | CWG, ZCD, NCO, CLC, SMT | CLC, PWM, NCO, SMT | OPAMP, DAC, CWG, ZCD, SMT |
| Packaging Format | Tape & Reel | Tube | Tube | Tube | Tape & Reel |
Key Differentiators
- Integrated motor-control peripherals (CWG, ZCD, NCO) (vs PIC16F15344-I/SS)
- 24-bit Signal Measurement Timer (SMT) (vs PIC16F1615-I/P)
- Configurable Logic Cell (CLC) for hardware state machines (vs PIC16F1718T-I/SS)
Design Notes
Place a 100 nF decoupling capacitor as close as possible to each VDD pin (pin 1 and pin 20) with a short trace to the nearest VSS. For designs with significant current spikes from switching peripherals (CWG, PWM), add a bulk 10 uF tantalum or ceramic capacitor on the supply rail near the MCU. The PIC16F1618T-I/SS can operate down to 2.3 V; ensure your voltage regulator has adequate headroom under worst-case load transients to prevent brown-out resets.
The 20-SSOP package has a 0.65 mm pitch and 5.30 mm body width. Use a 4-layer PCB with a continuous ground plane directly under the MCU to provide thermal dissipation and EMI shielding. Route the MCLR/VPP pin (pin 4) directly to the ICSP connector without stubs. Keep analog signal traces (ADC inputs, voltage reference) short and away from PWM switching traces to minimize coupling. Place the ICSP connector on the board edge for production-line programming access.
Do not leave the MCLR/VPP pin floating - configure it as MCLR with the internal pull-up disabled only if your design provides an external reset supervisor. When using peripheral pin-select (PPS), lock the PPS registers after configuration to prevent accidental remapping. The HFINTOSC accuracy is +/- 2% across temperature; for timing-critical applications (UART at high baud rates), calibrate using the FVR or add an external crystal. Always assert the BOR (brown-out reset) configuration appropriate to your supply voltage tolerance.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C). Not AEC-Q100 qualified - choose AEC-Q100 qualified PIC parts for automotive applications.
