PIC16F1618-E/SS - 8-Bit 32MHz XLP MCU 7KB Flash 20-SSOP | Microchip
MPN: PIC16F1618-E/SS β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.65 | $1.65 |
| 10 | $1.49 | $14.90 |
| 100 | $1.28 | $128.00 |
| 500 | $1.12 | $560.00 |
| 1,000 | $0.98 | $980.00 |
| 3,000 | $0.85 | $2,550.00 |
PIC16F1618-E/SS Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and peripheral I/O. The PIC16F1618 is classified within the broader hierarchy: 8-bit microcontroller -> RISC microcontroller -> embedded controller -> semiconductor IC. It belongs to Microchip's mid-range PIC16 enhanced core family, which uses a Harvard RISC architecture that executes one instruction per clock cycle (other than branches), delivering deterministic throughput at modest clock rates.
Key features include 18 I/O pins, a 10-bit ADC with automatic threshold scanning, a 24-bit Signal Measurement Timer (SMT) for precision time-based measurements, a Zero-Cross Detection (ZCD) module for TRIAC/SSR AC-line control, a Complementary Waveform Generator (CWG) for power-switching topologies, and up to four 10-bit PWM outputs with complementary pairing. The device supports 1.8V-5.5V operation (PIC16F1618 wide-voltage variant; the LF version is 1.8V-3.6V regulated).
Technically, the PIC16F1618 builds on Microchip's enhanced mid-range core with a 14-bit instruction word and hardware multiplier, allowing compact code density. Integrated Core Independent Peripherals (CIPs) such as CWG, ZCD, and SMT operate without CPU intervention, freeing the core for system logic and reducing firmware complexity for closed-loop control tasks.
Typical applications include BLDC/PMSM small-motor control (fans, pumps, appliance blowers), LED lighting drivers with dimming, AC-line TRIAC dimmers using ZCD, IoT sensor nodes requiring XLP sleep, household appliances, and general-purpose 8-bit embedded control boards in industrial and consumer products.
When designing with this part, ensure the unused pins are configured as outputs or tied appropriately, and respect the 5.5V absolute maximum on VDD even when the LF variant is used at lower voltages. Always verify the exact voltage range suffix (F vs LF) before substitution.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not collected in any single manufacturer datasheet view.
Drop-in alternatives for PIC16F1618-E/SS β 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 PIC16F1618-E/SS (same form factor and footprint) β differing in ADC, Data EEPROM, Data RAM, Package, Program Memory (Flash).
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F1619-I/SS
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$1.8 / Unit
View Datasheet βPIC16LF1618-I/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16F1614-I/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16F1615-I/SS
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
PIC16F1613-E/ST
β Drop-Inβ In Stock
$0.85 / Unit
View Datasheet βPIC16F1575-I/SS
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
PIC16F1618-E/SS Maximum Ratings & Electrical Characteristics
| Manufacturer | Microchip Technology |
| Series | PIC16F161X (XLP) |
| Core | PIC 8-bit enhanced mid-range |
| Instruction Set | 14-bit RISC (Harvard) |
| Program Memory (Flash) | 7 KB (4K x 14) |
| Data RAM | 512 bytes |
| Data EEPROM | 18 bytes |
| Max CPU Speed | 32 MHz |
| Operating Voltage (F variant) | 2.3 V to 5.5 V |
| Operating Temperature (E suffix) | -40 C to +125 C |
| I/O Pins | 18 |
| ADC | 10-bit, up to 12 channels |
| Package | 20-pin SSOP (5.30 mm body) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Core Independent Peripherals | CWG, ZCD, 24-bit SMT, NCO, CCP |
PIC16F1618-E/SS Pin Configuration
| Pin 1 | VDD β Positive supply voltage (2.3 V to 5.5 V) |
| Pin 2 | RA5 β Bidirectional I/O / analog input |
| Pin 3 | RA4 β Bidirectional I/O / analog input |
| Pin 4 | MCLR/VPP β Master Clear (reset) / programming voltage |
| Pin 5 | RC5 β Bidirectional I/O |
| Pin 6 | RC4 β Bidirectional I/O |
| Pin 7 | RC3 β Bidirectional I/O / SCL |
| Pin 8 | RC2 β Bidirectional I/O |
| Pin 9 | RC1 β Bidirectional I/O / SDA |
| Pin 10 | RC0 β Bidirectional I/O |
| Pin 11 | RA1 β Bidirectional I/O / analog / ICSPCLK |
| Pin 12 | RA0 β Bidirectional I/O / analog / ICSPDAT |
| Pin 13 | RA3 β Bidirectional I/O / analog |
| Pin 14 | RA2 β Bidirectional I/O / analog / ZCD input |
| Pin 15 | RC6 β Bidirectional I/O / TX |
| Pin 16 | RC7 β Bidirectional I/O / RX |
| Pin 17 | RA7 β Bidirectional I/O / oscillator |
| Pin 18 | RA6 β Bidirectional I/O / oscillator |
| Pin 19 | VSS β Ground reference |
| Pin 20 | VSS β Ground reference |
Typical Applications
PIC16F1618-E/SS is suitable for 6 applications: BLDC / Small PMSM Motor Control, AC-Line TRIAC Dimmer / Lighting Control, Battery-Powered IoT Sensor Nodes, Home Appliance Control Boards, Automotive Body and Interior Modules, Industrial Control and Sensor Conditioning.
BLDC / Small PMSM Motor Control
The PIC16F1618-E/SS is well suited to brushless DC and small permanent-magnet synchronous motor control in fans, appliance pumps, and small appliances because it integrates a Complementary Waveform Generator (CWG) with auto-shutdown, Zero-Cross Detect (ZCD) for back-EMF timing, and the 24-bit Signal Measurement Timer (SMT) for precise rotor-position sensing. With 32 MHz CPU clock and 7 KB Flash it handles sensor-less trapezoidal commutation algorithms in firmware with comfortable headroom. Three-phase complementary PWM pairs with dead-band insertion reduce MOSFET switching losses. The XLP sleep modes extend battery runtime in cordless product categories. Compare to PIC16F1613 which lacks CWG and ZCD.
Recommended
AC-Line TRIAC Dimmer / Lighting Control
The PIC16F1618-E/SS's on-chip Zero-Cross Detect (ZCD) peripheral synchronizes firmware to the AC mains zero crossings, enabling leading-edge or trailing-edge TRIAC dimming without external opto-couplers or zero-cross transformers in many designs. Its CWG can generate phase-cut firing pulses with hardware dead-time, and the SMT accurately measures TRIAC holding current window. With 18 GPIO and 10-bit ADC it can read potentiometer or touch inputs and drive LED status. Operates from 2.3-5.5 V, ideal for rectified-capacitor-derived rails after a TRIAC bridge.
Recommended
Battery-Powered IoT Sensor Nodes
In battery-powered wireless sensor or remote-control applications, the PIC16F1618-E/SS delivers XLP-class sleep current under 1 uA with full RAM retention, enabling multi-year coin-cell operation when firmware wakes the core only briefly to sample sensors and transmit. The 10-bit ADC, temperature-indicator module, and on-chip NCO support low-duty-cycle measurement cycles. The 18 GPIO drive multiple sensors or pushbuttons directly. Compare to PIC16F1614 with smaller memory for simpler sensors with shorter firmware. The LF variant PIC16LF1618 extends low-voltage support down to 1.8 V.
Recommended
Home Appliance Control Boards
The PIC16F1618-E/SS is well matched to home-appliance control boards for washing machines, dishwashers, coffee makers, and microwave ovens where a mix of relay driving, TRIAC phase control, sensor reading, and user-interface scanning is required. The combination of 7 KB Flash for state-machine firmware, 18 GPIO for HMI keypads/LEDs, and CWG for heating-element or motor switching reduces BOM cost. UART/SPI/I2C peripherals interface to display modules or secondary MCUs. The wide 2.3-5.5 V range simplifies 3.3 V/5 V power designs.
Recommended
Automotive Body and Interior Modules
While not AEC-Q100 qualified, the PIC16F1618-E/SS is widely used in non-safety automotive body and interior subsystems such as ambient lighting, door-module indicators, and seat-position sensors at 12 V nodes with external regulation. Its -40 C to +125 C operating range (E suffix) suits under-dash thermal environments. The CWG and PWM peripherals drive LED strings with smooth dimming, while the SMT measures timing of mechanical inputs. Designers must add TVS protection and verify load-dump compliance at the system level.
Recommended
Industrial Control and Sensor Conditioning
In industrial PLC I/O modules, process transmitters, and sensor-conditioning boards, the PIC16F1618-E/SS combines 32 MHz CPU throughput, 10-bit ADC with hardware averaging, and UART/SPI/I2C for host communication. The CWG can synthesize excitation waveforms for bridge sensors, and the NCO generates precise clock outputs for sigma-delta or frequency-output transducers. Wide operating temperature (-40 to +125 C) and voltage (2.3-5.5 V) handle harsh factory-floor rails. The 7 KB Flash accommodates Modbus or custom protocol stacks.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1618-E/SS β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1619-I/SS | PIC16LF1618-I/SS | PIC16F1614-I/SS | PIC16F1615-I/SS | PIC16F1613-E/ST | PIC16F1575-I/SS |
|---|---|---|---|---|---|---|---|
| Package | SSOP-20 | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same | TSSOP-20 - same footprint family | SSOP-20 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 7 KB (4K x 14) | 14 KB | 7 KB | 4 KB | 14 KB | 7 KB | 14 KB |
| SRAM | 512 bytes | 1 KB | 512 bytes | 256 bytes | 1 KB | 512 bytes | 1 KB |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 3.6 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 |
| CWG Peripheral | Yes | Yes | Yes | Yes | Limited | No | No |
| ZCD Peripheral | Yes | Yes | Yes | Yes | No | No | No |
| 24-bit SMT Timer | Yes | Yes | Yes | Yes | No | No | No |
Key Differentiators
- On-chip CWG + ZCD + 24-bit SMT in mid-tier 8-bit MCU (vs PIC16F1613-E/ST)
- 2x program memory versus smaller sibling (vs PIC16F1614-I/SS)
- Wide-voltage range with XLP low-power class (vs PIC16F1575-I/SS)
Design Notes
Estimated: at VDD=5 V and CPU active at 32 MHz, the PIC16F1618-E/SS draws ~7 mA typical, falling to under 1 uA in XLP sleep with full RAM retention. For battery designs, duty-cycle the wake-up carefully and disable unused peripherals in firmware via PMD registers. Place a 100 nF decoupling capacitor within 3 mm of VDD (pin 1) and a bulk 10 uF tantalum or ceramic on the supply rail. Avoid routing digital switching traces under the SSOP-20 package to reduce coupled noise on the ADC reference.
The /SS suffix denotes SSOP-20 package - do NOT confuse with /SO (SOIC-20, wider body) or /P (PDIP-20, through-hole). These have different PCB footprints and are NOT drop-in. Also note the F vs LF suffix: PIC16F1618 (2.3-5.5 V) cannot be substituted onto a 1.8 V-3.6 V LF design without re-specifying the power supply. Always confirm the exact MPN suffix before placing an order. MCLR must be pulled high through a 10 kohm resistor for normal operation.
For motor-control or TRIAC dimming applications using the CWG and ZCD peripherals, keep the AC-line sense traces short and use a 100 ohm series resistor with a TVS clamp on the ZCD input pin. Route the CWG output pairs (PWM1H/PWM1L, PWM2H/PWM2L) as length-matched differential pairs to the gate driver inputs to suppress ringing. Place a ground pour under the SSOP-20 footprint stitched with multiple vias to VSS pins 19 and 20 to dissipate switching transients. Reference Microchip application note AN1478 for PCB layout guidance.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC16F177x or PIC18F-Q1 for AEC-Q100 automotive.
