PIC16F1509T-I/SS - 14KB Flash 8-bit MCU 20MHz SSOP-20 | Microchip
MPN: PIC16F1509T-I/SS β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.65 | $1.65 |
| 10 | $1.49 | $14.90 |
| 100 | $1.32 | $132.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.05 | $1,050.00 |
PIC16F1509T-I/SS Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash/ROM), data memory (RAM), and integrated peripherals such as timers, ADCs, and communication interfaces. Within the broader semiconductor taxonomy, an MCU is a type of embedded processor -> microprocessor -> integrated circuit. The 8-bit PIC16F family targets low-power, cost-sensitive applications where deterministic real-time response and simple peripheral integration matter more than raw compute throughput.
Key features include 14KB self-programmable Flash (8K x 14 words), 512 bytes RAM, 256 bytes EEPROM, an 11-channel 10-bit ADC, four 8-bit timers, two comparators, Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART), and two SPI/I2C modules. The CLC, CWG, and NCO peripherals allow hardware-implemented logic, waveform synthesis, and frequency generation without CPU intervention, offloading real-time tasks from the core.
The PIC16F1509 uses a RISC-based Harvard architecture with a 14-bit instruction word and a 2-stage pipeline, delivering 20 MIPS at 20MHz. nanoWatt XLP technology offers sleep currents below 50 nA, making the part suitable for battery-powered or energy-harvesting designs. The 2.5V-5.5V operating range supports both lithium battery and 5V industrial rails.
Typical applications include IoT sensor nodes, battery-powered consumer electronics, LED lighting controllers, and small motor control. The wide operating voltage and low sleep current also suit automotive body electronics and remote sensor monitoring where quiescent power dominates battery life.
When designing with this device, decouple VDD with a 100 nF ceramic capacitor close to the supply pin and reserve the ICSPCLK/ICSPDAT pins for in-circuit serial programming. The MCLR pin should be tied to VDD through a 10 kohm pull-up for normal operation.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, accelerating engineering selection and sourcing decisions.
Drop-in alternatives for PIC16F1509T-I/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 PIC16F1509T-I/SS (same form factor and footprint) β differing in ADC, Operating Temperature, Package, Program Memory (Flash), Timers.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F1509-I/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16F1509T-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 8-bit RISC |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data Memory (RAM) | 512 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 20 MHz |
| Operating Voltage Range | 1.8 V to 3.6 V (F); 2.5 V to 5.5 V |
| I/O Pins | 18 |
| ADC | 10-bit, 11 channels |
| Timers | 4 x 8-bit |
| Comparators | 2 |
| Communication | 1 x EUSART, 2 x SPI/I2C |
| Package | 20-SSOP |
| Operating Temperature | -40C to +85C (Industrial) |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
PIC16F1509T-I/SS Pin Configuration
| Pin 1 | RA3/AN3 β Bidirectional I/O / Analog input 3 |
| Pin 2 | RA4/AN4 β Bidirectional I/O / Analog input 4 |
| Pin 3 | RA5/MCLR/VPP β I/O / Master Clear (reset, active-low) / Programming voltage |
| Pin 4 | RA0/AN0 β Bidirectional I/O / Analog input 0 |
| Pin 5 | RA1/AN1 β Bidirectional I/O / Analog input 1 |
| Pin 6 | RA2/AN2 β Bidirectional I/O / Analog input 2 |
| Pin 7 | VSS β Ground reference |
| Pin 8 | RA7/OSC1/CLKIN β I/O / Crystal oscillator input / External clock input |
| Pin 9 | RA6/OSC2/CLKOUT β I/O / Crystal oscillator output / Clock output |
| Pin 10 | RC0 β Bidirectional I/O port C |
| Pin 11 | RC1 β Bidirectional I/O port C |
| Pin 12 | RC2 β Bidirectional I/O port C |
| Pin 13 | RC3 β Bidirectional I/O port C |
| Pin 14 | RC4 β Bidirectional I/O port C |
| Pin 15 | RC5 β Bidirectional I/O port C |
| Pin 16 | RC6 β Bidirectional I/O port C |
| Pin 17 | RC7 β Bidirectional I/O port C |
| Pin 18 | RB7 β Bidirectional I/O port B |
| Pin 19 | RB6 β Bidirectional I/O port B |
| Pin 20 | VDD β Positive supply voltage |
Typical Applications
PIC16F1509T-I/SS is suitable for 6 applications: Battery-Powered IoT Sensor Node, LED Lighting Controller, Small Brushless DC Motor Control, Consumer Remote Control, Industrial Sensor Interface, Automotive Body Electronics.
Battery-Powered IoT Sensor Node
The PIC16F1509's nanoWatt XLP sleep currents below 50 nA and 14KB Flash make it ideal for battery-powered wireless sensor nodes that spend most of their life in sleep mode. The 11-channel 10-bit ADC handles multiple analog sensors (temperature, light, voltage monitoring) without external signal conditioning, while the CLC peripherals can implement hardware debouncing and event detection without waking the CPU, dramatically extending battery life in field deployments where duty cycle dominates total energy consumption.
Recommended
LED Lighting Controller
The CWG (Complementary Waveform Generator) and NCO (Numerically Controlled Oscillator) on the PIC16F1509 directly synthesize PWM, complementary PWM, and precision frequency signals needed for LED dimming and color-mixing without CPU overhead. Operating from 2.5-5.5V supports direct connection to 5V LED driver rails, while the 20MHz CPU speed is more than adequate for DMX-512 or DALI protocol parsing in architectural lighting fixtures where deterministic response matters more than throughput.
Recommended
Small Brushless DC Motor Control
The CWG peripheral generates complementary PWM outputs with programmable dead-band delay, while the NCO produces precision frequency signals for sensorless BLDC commutation timing. The PIC16F1509's 20MHz CPU and hardware-implemented commutation logic offload real-time motor control tasks from software, enabling closed-loop RPM control in fan, pump, or small appliance motor designs where cost and PCB area matter more than raw MIPS.
Recommended
Consumer Remote Control
With sub-50nA sleep current and 14KB Flash, the PIC16F1509 fits coin-cell-powered remote controls for TVs, set-top boxes, and smart-home hubs. The CLC can implement IR carrier generation in hardware without waking the CPU for every button press, while the EUSART handles bidirectional communication with the main appliance; the 2.5-5.5V operating range also supports direct drive from 3V CR2032 cells with no LDO required.
Recommended
Industrial Sensor Interface
The PIC16F1509's industrial -40C to +85C operating range, 11-channel 10-bit ADC, and 2.5-5.5V supply tolerance suit 4-20mA loop transmitters, RTD signal conditioning, and PLC digital input modules. The EUSART and dual SPI/I2C allow direct interfacing with industrial sensors and bus networks like RS-485 or CAN, while nanoWatt XLP modes reduce quiescent power in always-on field installations where loop current itself is the only available power.
Recommended
Automotive Body Electronics
The PIC16F1509's 1.8-5.5V operating range, automotive-qualified status, and high-noise-immunity PIC16 architecture suit body controllers, seat control modules, and interior lighting drivers. The CWG and NCO generate precision PWM for motor speed control in seat adjusters or window lifters, while the 18 I/O pins directly drive relay and LED loads without external logic; the 20MHz CPU handles LIN bus protocol and debounce timing in real time.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1509T-I/SS β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1509-I/SS | PIC16F1509-I/SO |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP | 20-SSOP - same | 20-SOIC - different footprint |
| Program Memory | 14 KB | 14 KB | 14 KB |
| RAM | 512 B | 512 B | 512 B |
| I/O Pins | 18 | 18 | 18 |
| Maximum Clock | 20 MHz | 20 MHz | 20 MHz |
| ADC | 10-bit, 11 ch | 10-bit, 11 ch | 10-bit, 11 ch |
| Operating Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| Packaging Form | Tape & Reel | Tube | Tube |
Key Differentiators
- Integrated CLC, CWG, and NCO peripherals (vs PIC16F1508)
- Larger program memory than PIC16F1508 (vs PIC16F1508)
Design Notes
Decouple VDD (pin 20) with a 100 nF ceramic capacitor placed within 3 mm of the supply pin; add a bulk 10 uF tantalum or ceramic capacitor near the IC for switching loads. The nanoWatt XLP sleep current is only achieved when the ADC and comparators are explicitly disabled before SLEEP; leaving peripherals active can increase sleep current by 100x or more.
Keep the ICSP programming footprint (ICSPCLK on RB6, ICSPDAT on RB7) accessible on the PCB for in-field firmware updates; even if production programming is not used, these pins should not be hardwired to ground or VDD. Use a 4.7 kohm pull-up on MCLR (pin 3) to VDD; never leave MCLR floating as noise can spuriously reset the device.
Do not exceed the absolute maximum VDD of 6.5V; design transient protection (TVS diode) for automotive or industrial environments where load-dump or inductive spikes are possible. When using the internal 16MHz HFINTOSC, calibrate via the OSCTUNE register to compensate for voltage and temperature drift before relying on timing-sensitive UART or PWM outputs.
Compliance Information
RoHS and REACH compliant per Microchip product page. Standard industrial grade; AEC-Q100 automotive variants available separately. The 'I' suffix indicates -40C to +85C industrial operating temperature range.
