PIC16F1518T-I/SS - 28KB Flash 8-bit MCU | Microchip | XLP
MPN: PIC16F1518T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.15 | $2.15 |
| 10 | $1.96 | $19.60 |
| 100 | $1.74 | $174.00 |
| 500 | $1.55 | $775.00 |
| 1,000 | $1.38 | $1,380.00 |
| 3,000 | $1.21 | $3,630.00 |
PIC16F1518T-I/SS Overview
An 8-bit microcontroller (MCU) is a single-chip computer that combines an 8-bit CPU, program memory (Flash/ROM), data memory (RAM), and integrated peripherals such as ADC, timers, and communication interfaces on a single die. The PIC16F1518 belongs to the broader taxonomy: microcontroller -> embedded controller -> semiconductor IC, and within Microchip's portfolio to the PIC16 family -> enhanced mid-range core -> XLP product line. The XLP designation signifies that the device supports nanoWatt sleep currents in the deep sub-1 uA range, which is critical for battery-powered and energy-harvesting designs where standby drain dominates total energy budget.
Key differentiating specifications include 28 KB self-read/write Flash with 100,000 endurance cycles on the lower 128 bytes data Flash block, 16-level hardware stack, 49 base instructions with 200 ns minimum instruction cycle at 20 MHz, 25 mA source/sink I/O drive strength for direct LED or transistor driving, and two 8-bit timers plus one 16-bit timer. The internal 16 MHz oscillator eliminates the need for an external crystal in most designs, reducing BOM cost and PCB area.
Architecturally, the PIC16F1518 uses Microchip's Harvard architecture with separate program and data buses, allowing simultaneous instruction fetch and operand access. The enhanced mid-range core adds a hardware accumulator, indexed addressing, and interrupt-on-change on multiple I/O ports, while the integrated 10-bit ADC achieves typical INL of +/-1 LSB and supports both internal and external voltage references.
Typical applications include consumer appliance control, IoT sensor nodes, battery-powered instrumentation, LED lighting controllers, automotive body electronics (non-safety), and low-cost industrial sensor interfaces. The wide 2.3 V-5.5 V operating range supports both 3.3 V and 5 V system designs.
When designing with this device, allocate one I/O pin as MCLR if external reset is required, ensure the PGC/PGD pair is accessible for in-circuit serial programming (ICSP), and select the appropriate oscillator configuration bits for stable operation across the full temperature range.
This page synthesizes distributor pricing, drop-in alternatives within the PIC16 family, application references, and practical design notes that complement but do not duplicate the manufacturer datasheet content.
Drop-in alternatives for PIC16F1518T-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 PIC16F1518T-I/SS (same form factor and footprint) — differing in ADC, Package, Operating Temperature, Timers, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1518-I/SS
✅ Drop-In✓ In Stock
$1.2 / Unit
View Datasheet →PIC16F1518T-I/SO
✅ Drop-In✓ In Stock
$1.62 / Unit
View Datasheet →PIC16F1516-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1509T-I/SS
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16F1459-I/SS
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F1513-I/SS
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16F1518T-I/SS Maximum Ratings & Electrical Characteristics
| Architecture | PIC16 enhanced mid-range 8-bit core (Harvard) |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data Memory (RAM) | 1024 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 20 MHz (200 ns instruction cycle) |
| Internal Oscillator | 16 MHz (factory calibrated) |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| Operating Temperature | -40 C to +85 C (industrial) |
| I/O Pins | 25 (bidirectional, 25 mA source/sink) |
| ADC | 10-bit, 17 channels, with internal voltage reference |
| CCP Modules | 2 (Capture/Compare/PWM) |
| Timers | 2 x 8-bit, 1 x 16-bit |
| Communication Interfaces | MI2C, SPI, EUSART (RS-232/RS-485/LIN, auto-baud) |
| Package | 28-pin SSOP (5.30 mm body, 0.65 mm pitch) |
| Mounting Type | Surface Mount (Tape & Reel) |
| XLP (eXtreme Low Power) | Yes (nanoWatt sleep modes) |
| RoHS Status | Compliant |
| MSL Level | 1 (unlimited floor life) |
PIC16F1518T-I/SS Pin Configuration
| Pin 1 | RA2/AN2 — Bidirectional I/O / Analog input channel 2 |
| Pin 2 | RA3/AN3/VREF+ — Bidirectional I/O / Analog input 3 / ADC positive reference |
| Pin 3 | RA4/AN4/T0CKI — Bidirectional I/O / Analog input 4 / Timer0 clock input |
| Pin 4 | RA5/AN5/MCLR/VPP — I/O / Analog input 5 / Master Clear reset / Programming voltage |
| Pin 5 | RA6/OSC2/CLKOUT — I/O / Oscillator output / Clock output |
| Pin 6 | RA7/OSC1/CLKIN — I/O / Oscillator input / External clock input |
| Pin 7 | VSS — Ground reference |
| Pin 8 | VDD — Positive supply voltage (2.3 V to 5.5 V) |
| Pin 9 | RB0/AN12/CCP2 — I/O / Analog input 12 / CCP2 PWM output |
| Pin 10 | RB1/AN10/C1IN3-/P1C — I/O / Analog input 10 / Comparator input / PWM output |
| Pin 11 | RB2/AN8/P1D — I/O / Analog input 8 / PWM output |
| Pin 12 | RB3/AN9/CPP1 — I/O / Analog input 9 / CCP1 output |
| Pin 13 | RB4/AN11 — I/O / Analog input 11 |
| Pin 14 | RB5/AN13 — I/O / Analog input 13 |
| Pin 15 | RB6/ICSPCLK — I/O / In-Circuit Serial Programming clock |
| Pin 16 | RB7/ICSPDAT — I/O / In-Circuit Serial Programming data |
| Pin 17 | VDD — Positive supply voltage (second pin) |
| Pin 18 | VSS — Ground reference (second pin) |
| Pin 19 | RC0/SOSCO — I/O / Secondary oscillator output |
| Pin 20 | RC1/SOSCI — I/O / Secondary oscillator input |
| Pin 21 | RC2/AN14/CCP2 — I/O / Analog input 14 / CCP2 PWM |
| Pin 22 | RC3/AN15/SCL — I/O / Analog input 15 / I2C clock |
| Pin 23 | RC4/AN16/SDA — I/O / Analog input 16 / I2C data |
| Pin 24 | RC5/AN17 — I/O / Analog input 17 |
| Pin 25 | RC6/AN18/TX/CK — I/O / Analog input 18 / EUSART TX |
| Pin 26 | RC7/AN19/RX/DT — I/O / Analog input 19 / EUSART RX |
| Pin 27 | RE3/MCLR/VPP — I/O / Master Clear (alternate) |
| Pin 28 | RA1/AN1 — Bidirectional I/O / Analog input 1 |
Typical Applications
PIC16F1518T-I/SS is suitable for 6 applications: IoT Sensor Node / Battery Sensor Hub, Consumer Appliance Control (Coffee Machine / Washing Machine UI), LED Lighting Controller / DMX Decoder, Industrial Sensor Transmitter / 4-20 mA Loop, Automotive Body Electronics (Non-Safety), Battery Charger / Power Bank Controller.
IoT Sensor Node / Battery Sensor Hub
The PIC16F1518T-I/SS suits wireless and wired IoT sensor nodes that require periodic wake-up, ADC sampling, and transmit cycle. With 17-channel 10-bit ADC, 28 KB Flash for protocol stacks like Modbus RTU or LoRaWAN MAC, and XLP nanoWatt sleep currents around 30 nA typical, the device supports 10+ year battery life on a single CR2032 coin cell. Place the MCU between the sensor array and the radio module (e.g. RN2483 or SX1276), using the 17 ADC inputs to multiplex multiple analog sensors (temperature, light, pressure). The EUSART auto-baud is ideal for RS-485 multi-drop sensor networks.
Recommended
Consumer Appliance Control (Coffee Machine / Washing Machine UI)
The PIC16F1518T-I/SS provides the main control MCU capability for consumer appliances including coffee machines, washing machines, and microwave ovens. Its 25 mA source/sink I/O pins directly drive LEDs, buzzers, triacs, and small relays without buffer transistors, while the 2 CCP modules generate PWM signals for motor speed control (washing machine drum) or heater power regulation (coffee boiler). 28 KB Flash accommodates state-machine firmware and user-interface handling for 7-segment or TFT displays. The industrial -40C to +85C range tolerates appliance thermal environment near heating elements.
Recommended
LED Lighting Controller / DMX Decoder
The PIC16F1518T-I/SS drives constant-current LED controllers and DMX-512 dimmer systems using its 2 CCP modules for PWM dimming and the EUSART for DMX-512 receive (250 kbaud). 28 KB Flash stores dimming curves, color-mixing algorithms, and DMX personality configurations, while 17 ADC channels monitor LED temperature via NTC thermistors and DC bus voltage for load regulation. Operating from 2.3 V to 5.5 V, the device works directly from 3.3 V buck or 5 V USB supplies. The XLP sleep mode lets battery-powered DMX testers consume under 100 uA standby.
Recommended
Industrial Sensor Transmitter / 4-20 mA Loop
The PIC16F1518T-I/SS is well suited to industrial 4-20 mA current-loop transmitters, RTD/thermocouple signal conditioning, and pressure/flow sensor readouts. Its 17-channel 10-bit ADC and integrated voltage reference deliver adequate resolution for process variables, while the SPI bus connects to external 24-bit sigma-delta ADCs (e.g. MCP3551) when higher accuracy is required. MI2C supports local sensor hubs and EEPROM for calibration data. The -40C to +85C industrial temperature range handles field enclosures, and the 28-SSOP package fits inside compact DIN-rail transmitter heads.
Recommended
Automotive Body Electronics (Non-Safety)
The PIC16F1518T-I/SS drives automotive body controllers including window lift modules, seat position memory, climate-control panels, and interior lighting. The 25 mA I/O source/sink directly drives small relays and LED backlights. For LIN (Local Interconnect Network) sub-bus communication, the integrated EUSART with auto-baud handles LIN slave protocol up to 20 kbaud. The 28-SSOP footprint supports AEC-Q100 qualified sibling PIC16F1518T-I/SSVAO for safety-relevant body modules. Note that the -I/SS variant itself is industrial-grade (-40C to +85C) only.
Recommended
Battery Charger / Power Bank Controller
The PIC16F1518T-I/SS implements smart lithium-ion battery chargers and USB power bank controllers using its 10-bit ADC to monitor cell voltage, charge current, and temperature. The 2 CCP modules generate PWM for synchronous buck converter control, while the EUSART reports state-of-charge data to host devices. XLP sleep mode (<1 uA) is critical when the power bank is idle for months. 28 KB Flash accommodates multi-chemistry charging profiles (Li-ion, LiFePO4, NiMH) and safety timer logic. The 2.3-5.5 V range supports single-cell Li-ion directly.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1518T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1518-I/SS | PIC16F1518T-I/SO | PIC16F1516-I/SS | PIC16F1509T-I/SS | PIC16F1459-I/SS | PIC16F1513-I/SS |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP (Tape & Reel) | 28-SSOP (tray) | 28-SOIC (T&R) | 28-SSOP (tray) | 28-SSOP (T&R) | 28-SSOP (tray) | 28-SSOP (tray) |
| Program Memory (Flash) | 28 KB | 28 KB | 28 KB | 14 KB | 14 KB | 14 KB | 7 KB |
| Data Memory (RAM) | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | 512 bytes |
| CPU Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| ADC Channels / Resolution | 17 / 10-bit | 17 / 10-bit | 17 / 10-bit | 17 / 10-bit | 12 / 10-bit | 12 / 10-bit | 12 / 10-bit |
| USB Peripheral | No | No | No | No | No | Yes (USB 2.0 FS) | No |
| EUSART / LIN | Yes (auto-baud) | Yes (auto-baud) | Yes (auto-baud) | Yes (auto-baud) | No | No | Yes |
| CCP Modules | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Approximate Unit Price (qty 1000) | $1.38 | $1.32 | $1.45 | $1.20 | $1.05 | $1.65 | $0.98 |
Key Differentiators
- Largest Flash in 28-SSOP XLP family with EUSART auto-baud (vs PIC16F1509T-I/SS)
- Highest ADC channel count in the family (vs PIC16F1459-I/SS)
- Industrial-grade (-40 C to +85 C) with full automotive path available (vs PIC16F1513-I/SS)
- Cost-balanced 28 KB Flash at 14-pin-class price (vs PIC16F1516-I/SS)
Design Notes
The PIC16F1518T-I/SS supports a wide 2.3 V to 5.5 V supply range. Place a 100 nF decoupling capacitor as close as possible to each VDD pin (pins 8 and 17 share the supply). For battery-powered designs, add a 10 uF bulk capacitor at the MCU side of any LDO or switching regulator. Use the LFINTOSC (31 kHz) or secondary 32.768 kHz crystal oscillator during sleep periods to minimize active current drain to 30-50 uA/MHz.
When laying out the 28-SSOP footprint, route the ICSP pair RB6 (ICSPCLK) and RB7 (ICSPDAT) directly to a 5-pin header (0.1 inch pitch) for in-circuit programming and debugging. MCLR/RA5/VPP (pin 4) should have a 10 kohm pull-up to VDD and a 100 nF cap to ground for clean reset; the ICSP header should not back-drive this pin. Keep analog traces (ANx pins) short and away from switching nodes to avoid ADC noise coupling.
Do not leave the MCLR/RA5 pin floating - a weak pull-up of 10-50 kohm is required for proper device reset. The ADC inputs are NOT 5 V tolerant when VDD < 5 V; verify input signal does not exceed VDD + 0.3 V to avoid latch-up. When using the internal oscillator, the OSCTUNE register provides +/- 12% calibration but for UART communication at higher baud rates an external crystal or HFINTOSC tuning is recommended.
Estimated: at 20 MHz active mode and 5 V supply, the PIC16F1518T-I/SS draws approximately 6 mA typical (30 mW). The 28-SSOP package has theta_JA around 90 C/W in still air, so junction rise is roughly 2.7 C above ambient - thermal management is generally not a concern. However, in fully sealed enclosures with no airflow, derate by 20-30% and verify with thermocouple measurement during worst-case firmware execution.
Compliance Information
RoHS and REACH compliant per Microchip product declaration. The -I/SS variant is industrial-grade -40C to +85C only; for AEC-Q100 automotive qualification, use PIC16F1518T-I/SSVAO. Lead-free and halogen-free per Microchip 2011 onwards production.
