PIC16F1503T-I/SL - 8-Bit 20MHz 3.5KB Flash MCU 14-SOIC | Microchip
MPN: PIC16F1503T-I/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.12 | $1.12 |
| 10 | $1.02 | $10.20 |
| 100 | $0.92 | $92.00 |
| 500 | $0.83 | $415.00 |
| 1,000 | $0.74 | $740.00 |
| 2,600 | $0.65 | $1,690.00 |
PIC16F1503T-I/SL Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile data memory (RAM), and a set of on-chip peripherals such as ADCs, timers, and communication interfaces. Within the broader taxonomy, the PIC16F1503 belongs to the 8-bit MCU class -> microcontrollers -> integrated circuits -> semiconductors. The "T" suffix denotes Tape & Reel packaging, while "I" indicates the industrial operating temperature range of -40C to +85C and "SL" identifies the 14-pin SOIC package option.
Key features include Configurable Logic Cells (CLC), Complementary Waveform Generators (CWG), Numerically Controlled Oscillator (NCO), 12-bit ADC with computation, 10-bit PWM, and an enhanced mid-range core with 49 instructions and a 16-level hardware stack. Functional safety (FuSa) features include Windowed Watchdog Timer (WWDT) and Cyclic Redundancy Check (CRC) with memory scan, supporting IEC 60730 class B safety applications.
The device operates from 2.3V to 5.5V across industrial temperature and supports In-Circuit Serial Programming (ICSP) via MPLAB X IDE, PICkit 3, and MPLAB ICD 3 tools. The 14-pin SOIC footprint provides ease of hand-prototyping and reliable reflow soldering for cost-sensitive consumer, appliance, and IoT designs.
Typical applications include consumer appliance control, LED lighting drivers, simple sensor signal conditioning, battery-powered IoT end nodes, and functional safety subsystems requiring IEC 60730 class B compliance. The CWG and NCO peripherals make it well-suited for driving power-converter FET bridges or generating precision frequency references.
When designing with this MCU, allocate at least one ICP/ICD-capable debug pin pair for programming access and consider reserving the CLC and CWG peripherals for hardware-state-machine functions to offload the CPU. Use the on-chip 10-bit ADC rather than an external part when possible to reduce BOM cost and PCB area.
This page synthesizes verified distributor pricing, same-brand drop-in alternatives, and practical design notes not consolidated on any single distributor product page, giving design engineers a single source for parametric and sourcing decisions on the PIC16F1503T-I/SL.
Drop-in alternatives for PIC16F1503T-I/SL — 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 PIC16F1503T-I/SL (same form factor and footprint) — differing in Package, ADC, Internal Oscillator, Program Memory (Flash), Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1503-I/SL
✅ Drop-In✓ In Stock
$0.59 / Unit
View Datasheet →PIC16F1503T-I/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1503-E/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1455T-I/ST
✅ Drop-In✓ In Stock
$1.92 / Unit
View Datasheet →PIC16F1455-I/SL
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F1454T-I/ST
✅ Drop-In✓ In Stock
$1.41 / Unit
View Datasheet →PIC16F1459-I/SS
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F1503T-I/SL Maximum Ratings & Electrical Characteristics
| Core | PIC16 enhanced mid-range 8-bit CPU |
| Instruction Set | 49 instructions, 16-level hardware stack |
| Program Memory (Flash) | 3.5 KB (2K x 14) |
| RAM | 128 bytes |
| Maximum CPU Speed | 20 MHz |
| Operating Voltage (VDD) | 2.3 V to 5.5 V |
| I/O Pins | 12 |
| ADC | 8-channel, 10-bit |
| Configurable Logic Cells (CLC) | Yes |
| Complementary Waveform Generator (CWG) | Yes |
| Numerically Controlled Oscillator (NCO) | Yes |
| Windowed Watchdog Timer (WWDT) | Yes |
| CRC / Memory Scan | Yes (IEC 60730 class B) |
| In-Circuit Serial Programming (ICSP) | Yes |
| Operating Temperature Range | -40C to +85C (Industrial, "I") |
| Package | 14-pin SOIC (SL), Tape & Reel ("T") |
| RoHS Status | Compliant |
PIC16F1503T-I/SL Pin Configuration
| Pin 1 | RA5 — Digital I/O / analog input / ICD CLK |
| Pin 2 | RA4 — Digital I/O / analog input |
| Pin 3 | RA3 — Digital I/O / MCLR / ICD DATA |
| Pin 4 | RC5 — Digital I/O |
| Pin 5 | RC4 — Digital I/O |
| Pin 6 | RC3 — Digital I/O / analog input |
| Pin 7 | RC2 — Digital I/O / analog input |
| Pin 8 | RC1 — Digital I/O / analog input |
| Pin 9 | RC0 — Digital I/O / analog input |
| Pin 10 | VSS — Ground reference |
| Pin 11 | VDD — Positive supply (2.3 V to 5.5 V) |
| Pin 12 | RA2 — Digital I/O / analog input |
| Pin 13 | RA1 — Digital I/O / analog input |
| Pin 14 | RA0 — Digital I/O / analog input |
Typical Applications
PIC16F1503T-I/SL is suitable for 6 applications: Consumer Appliance Control (IEC 60730 Class B), LED Lighting Drivers and Smart Bulbs, Battery-Powered IoT Sensor End Nodes, Simple Sensor Signal Conditioning Hubs, Small Motor and Fan Speed Controllers, Human-Machine Interface (HMI) Button and LED Drivers.
Consumer Appliance Control (IEC 60730 Class B)
The PIC16F1503T-I/SL is ideal for IEC 60730 class B consumer appliance control such as washing machines, dishwashers, ovens, and refrigerators. Its on-chip Windowed Watchdog Timer (WWDT), hardware CRC, and memory-scan peripherals simplify class B self-test routines without external supervision components. The 8-channel 10-bit ADC reads multiple sensor inputs (temperature, level, motor current) while Configurable Logic Cells (CLC) offload safety-critical glue logic from the CPU. The 20 MHz enhanced mid-range core executes the control loop in well under 1 ms per cycle, leaving headroom for safety diagnostics. Combined with the 14-pin SOIC's small footprint, this MCU drops into space-constrained appliance PCBAs at industrial-grade pricing.
Recommended
LED Lighting Drivers and Smart Bulbs
The PIC16F1503T-I/SL fits mains-isolated LED driver and smart-bulb designs thanks to its Complementary Waveform Generator (CWG) and 10-bit PWM peripherals. The CWG can directly drive a half-bridge or full-bridge FET stage for dimmable constant-current LED regulation, eliminating external PWM-controller ICs and shrinking BOM cost. The Numerically Controlled Oscillator (NCO) generates precise dithered frequencies for color-mixing or low-flicker dimming profiles. With 3.5 KB Flash and 128 B RAM, the MCU holds typical BLE-passthrough or standalone color-control firmware. Operating from 2.3 V to 5.5 V lets it run directly from a 3.3 V LDO post-mains, simplifying isolation boundaries.
Recommended
Battery-Powered IoT Sensor End Nodes
For battery-powered IoT sensor nodes the PIC16F1503T-I/SL delivers a low-cost 8-bit MCU with sleep current low enough for years of coin-cell operation when paired with sleep-mode firmware patterns. The 14-pin SOIC integrates 12 I/O pins, more than enough to drive a sensor, an indicator LED, and a low-power RF module. The enhanced mid-range core's 49-instruction set minimizes code size so 3.5 KB Flash covers substantial application logic. The on-chip 10-bit ADC digitizes thermistor, photodiode, or battery-voltage signals without an external ADC, saving cost and PCB area. Industrial -40C to +85C operation suits outdoor and HVAC-adjacent deployments.
Recommended
Simple Sensor Signal Conditioning Hubs
The PIC16F1503T-I/SL acts as a sensor-conditioning hub that aggregates analog inputs, applies digital filtering, and forwards clean data over UART or I2C to a host processor. The 8-channel 10-bit ADC samples up to eight analog sources per scan cycle, while the CLC implements hardware debouncing and threshold detection without CPU intervention. The 20 MHz core handles FFT-lite or moving-average filtering in real time on modest sensor streams. The 14-SOIC footprint fits on small break-out PCBs that mount directly behind a sensor cluster. Designers benefit from the IEC 60730 features even outside class B applications, gaining diagnostic confidence.
Recommended
Small Motor and Fan Speed Controllers
The PIC16F1503T-I/SL drives small DC motors, fans, and pumps using its Complementary Waveform Generator (CWG) for half-bridge switching and the 10-bit PWM for duty-cycle control. Closed-loop control is straightforward with the ADC reading back EMF or current-sense signals, while the CLC provides hardware fault detection (overcurrent, stall) independent of CPU latency. The 3.5 KB Flash holds PID plus start-up profiles for typical BLDC or brushed-DC loads. With the 14-SOIC's compact footprint, the MCU fits inside motor-housing PCBs alongside small FET bridges. Industrial temperature range supports underhood and outdoor-fan deployments.
Recommended
Human-Machine Interface (HMI) Button and LED Drivers
The PIC16F1503T-I/SL drives HMI panels with multiple buttons, LEDs, and 7-segment displays, leveraging its 12 I/O pins and CLC to scan matrices and generate LED patterns. The CWG can produce complementary drive signals for piezo buzzers or LED backlights without PWM-software overhead. The 49-instruction core efficiently handles debounced key scanning, LED multiplexing, and asynchronous event timing. With the on-chip 10-bit ADC, capacitive-touch or resistive-touch sensing can be added without external touch controllers. The 14-SOIC package sits behind small keypads where PCB depth is constrained.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1503T-I/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1503-I/SL | PIC16F1503T-I/ST | PIC16F1503-E/SL | PIC16F1455-I/SL | PIC16F1455T-I/ST | PIC16F1454T-I/ST | PIC16F1459-I/SS |
|---|---|---|---|---|---|---|---|---|
| Package | 14-SOIC (SL) | 14-SOIC (SL) - same | 14-TSSOP (ST) - smaller height | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-TSSOP (ST) | 14-TSSOP (ST) | 20-SSOP (SS) - larger |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 14 KB | 14 KB | 3.5 KB | 14 KB |
| RAM | 128 B | 128 B | 128 B | 128 B | 1 KB | 1 KB | 128 B | 1 KB |
| Maximum CPU Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| USB 2.0 FS Transceiver | No | No | No | No | Yes | Yes | Yes | Yes |
| Configurable Logic Cells (CLC) | Yes | Yes | Yes | Yes | Reduced count | Reduced count | No | Yes |
| Complementary Waveform Generator (CWG) | Yes | Yes | Yes | Yes | No | No | No | Yes |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Configurable Logic Cells (CLC) and Complementary Waveform Generator (CWG) integrated (vs PIC16F1455-I/SL)
- Tape-and-reel 14-SOIC suited for SMT production (vs PIC16F1503-I/P)
- Industrial -40C to +85C qualification with IEC 60730 class B features (vs PIC16F1503T-I/ST)
Design Notes
The PIC16F1503T-I/SL operates from 2.3 V to 5.5 V; for 3.3 V system rails pair the MCU with an MCP1700 LDO and a 1 uF X7R bypass on VDD. Place a 0.1 uF decoupling capacitor within 5 mm of the VDD pin to suppress switching transients when CWG toggles. For battery-powered designs, leverage the deep-sleep current specification by gating peripherals via PMD registers before entering sleep.
Route RA3 (MCLR) with a 10 kohm pull-up to VDD and place the ICSP header on the board edge to support PICkit 3 / MPLAB ICD 3 in-circuit programming. Keep the ICSPCLK and ICSPDAT traces short and away from switching nodes driven by CWG. The 14-SOIC package's exposed leads on the long sides allow easy visual inspection of solder joints.
Do not exceed 5.5 V on VDD or apply voltage to any I/O pin before VDD is applied; failure to observe power-sequencing can latch-up the part. When migrating PIC16F1503T-I/SL firmware to PIC16F1455-I/SL, re-validate CLC and CWG peripheral mappings since the F1455 family has a reduced CLC count and lacks CWG. For IEC 60730 class B compliance, enable WWDT and CRC-scan features and run the self-test routine at every power-on reset.
When using the on-chip 10-bit ADC, dedicate a quiet VDD rail and route analog inputs (RA0-RA2, RC0-RC3) away from CWG-driven switching traces to minimize coupled noise. Add a 100 ohm series resistor at the ADC pin to dampen charge-injection transients when the CLC changes state during conversion. Average multiple ADC samples in software if sub-LSB noise exceeds application threshold.
Compliance Information
RoHS compliant per Microchip product page. IEC 60730 class B functional safety features (WWDT, CRC, memory scan) on-chip. AEC-Q100 qualification is not applicable - this is a general-purpose MCU, not an automotive-grade part.
