PIC16F1509-I/P - 8-bit MCU, 14KB Flash, 20MHz | Microchip
MPN: PIC16F1509-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.3 | $2.30 |
| 10 | $2.07 | $20.70 |
| 100 | $1.79 | $179.00 |
| 500 | $1.58 | $790.00 |
| 1,000 | $1.43 | $1,430.00 |
PIC16F1509-I/P Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM), and peripherals on one silicon die. MCUs sit below microprocessors in the embedded computing hierarchy and are designed for deterministic, low-power control tasks. The PIC16F1509 belongs to the PIC16 mid-range family, which uses Microchip's enhanced RISC architecture with a 14-bit instruction word and 200ns instruction cycle at 20MHz. PIC MCUs are widely deployed in industrial, automotive, consumer, and IoT applications because of their low cost, mature toolchain (MPLAB X IDE), and field-reprogrammable Flash.
Key features of the PIC16F1509-I/P include 14KB (8192 x 14-bit words) of self-programmable Flash, 512 bytes of RAM, 256 bytes of EEPROM, 18 I/O pins, four 8-bit timers, one 16-bit timer, a 10-bit ADC with 18 channels, two comparators, and an Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART). The device supports 2.3V to 5.5V operation (industrial temperature range -40C to +85C for the -I variant), and integrates multiple clock sources including a 16MHz internal oscillator and an HFINTOSC with PLL.
The PIC16F1509-I/P uses Microchip's enhanced mid-range core with a hardware 8x8 multiplier, providing faster arithmetic than baseline PIC devices. The on-chip CWG and NCO peripherals enable generation of high-resolution waveforms without CPU overhead, while the CLC allows combinatorial logic to be implemented in hardware, reducing code size and latency. The integrated HFINTOSC eliminates the need for external crystals in many designs, lowering BOM cost and PCB area.
Typical applications include LED lighting control using the CWG and NCO peripherals, battery charging and management with PWM-driven converters, consumer appliance control (coffee makers, small kitchen equipment), sensor signal conditioning with the on-chip op-amp and ADC, automotive interior lighting (with the -E variant qualified to AEC-Q100), and small motor control via PWM channels. The 14KB Flash provides headroom for state-machine based control firmware with lookup tables.
When designing with this MCU, ensure that the configuration bits (CONFIG1/CONFIG2) are set to match the application: clock source selection, watchdog timer enable, brown-out reset voltage, and code protection. Pin 1 is the master clear (MCLR) reset; an external pull-up to VDD is required unless MCLRE is disabled. Decouple VDD with a 100nF ceramic capacitor placed as close as possible to the IC, and add a 10uF bulk capacitor on the power rail.
This page synthesizes distributor pricing, parameter data, drop-in alternative PIC16F1508/1509-family variants, and design notes drawn from Microchip datasheet DS40001606D that are not presented together on any single distributor product page.
Drop-in alternatives for PIC16F1509-I/P — 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 PIC16F1509-I/P (same form factor and footprint) — differing in Package, ADC, Timers, Operating Temperature, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1509-E/P
✅ Drop-In✓ In Stock
$0.98 / Unit
View Datasheet →PIC16F1508-I/P
✅ Drop-In✓ In Stock
$1.04 / Unit
View Datasheet →PIC16F1508-I/SO
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.92 / Unit
View Datasheet →PIC16F1507-I/SO
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.92 / Unit
View Datasheet →PIC16F1459-I/SS
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F1455-I/SL
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F1509-I/P Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 enhanced mid-range 8-bit RISC |
| Program Memory (Flash) | 14 KB (8192 x 14-bit words) |
| Data Memory (RAM) | 512 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 20 MHz (200 ns instruction cycle) |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| I/O Pins | 18 |
| ADC | 10-bit, 18 channels |
| Comparators | 2 |
| Timers | 4 x 8-bit, 1 x 16-bit |
| PWM Outputs | 4 (10-bit Enhanced PWM) |
| Communication | 1 x EUSART, 1 x MSSP (SPI/I2C) |
| Internal Oscillator | 16 MHz HFINTOSC, 32 kHz LFINTOSC, PLL up to 32 MHz |
| Package | 20-pin PDIP (P) |
| Operating Temperature | -40 C to +85 C (industrial, -I grade) |
| Peripherals | CLC, CWG, NCO, 10-bit ADC, EUSART, MSSP |
| RoHS Status | Compliant |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
PIC16F1509-I/P Pin Configuration
| Pin 1 | RA3/AN3/VREF+/C12IN0-/CPS3 — Digital I/O RA3 with analog input 3, positive voltage reference, comparator input, and capacitive touch input |
| Pin 2 | RA4/AN4/CPS4/T0CKI — Digital I/O RA4 with analog input 4, capacitive touch, and Timer0 clock input |
| Pin 3 | RA5/MCLR/VPP/ICSPCLK — Digital I/O RA5 / Master Clear reset (active low) / programming voltage / ICSP clock |
| Pin 4 | RA6/AN6/OSC2/CLKR — Digital I/O RA6 with analog input 6, oscillator output, and clock output |
| Pin 5 | RA7/AN7/OSC1/CLKIN — Digital I/O RA7 with analog input 7, oscillator input, and external clock input |
| Pin 6 | RC0/SOSCO/AN8 — Digital I/O RC0 with secondary oscillator output and analog input 8 |
| Pin 7 | RC1/SOSCI/AN9 — Digital I/O RC1 with secondary oscillator input and analog input 9 |
| Pin 8 | RC2/AN10/C1OUT — Digital I/O RC2 with analog input 10 and comparator 1 output |
| Pin 9 | RC3/AN11/C2OUT — Digital I/O RC3 with analog input 11 and comparator 2 output |
| Pin 10 | RC4/AN12/CPS12 — Digital I/O RC4 with analog input 12 and capacitive touch input |
| Pin 11 | RC5/AN13/CPS13 — Digital I/O RC5 with analog input 13 and capacitive touch input |
| Pin 12 | RC6/AN14/CK/ICSPCLK — Digital I/O RC6 with analog input 14, EUSART clock, and alternate ICSP clock |
| Pin 13 | RC7/AN15/DT/ICSPDAT — Digital I/O RC7 with analog input 15, EUSART data, and ICSP data |
| Pin 14 | VSS — Ground reference |
| Pin 15 | VDD — Positive power supply, 2.3V to 5.5V |
| Pin 16 | RA0/AN0/CPS0 — Digital I/O RA0 with analog input 0 and capacitive touch input |
| Pin 17 | RA1/AN1/CPS1 — Digital I/O RA1 with analog input 1 and capacitive touch input |
| Pin 18 | RA2/AN2/CPS2 — Digital I/O RA2 with analog input 2 and capacitive touch input |
| Pin 19 | RB4/AN10/CPS10 — Digital I/O RB4 with analog input 10 (shared) and capacitive touch input |
| Pin 20 | RB5/AN11/CPS11 — Digital I/O RB5 with analog input 11 (shared) and capacitive touch input |
Typical Applications
PIC16F1509-I/P is suitable for 7 applications: LED Lighting and Signage Control, Battery Charging and Power Management, Consumer Appliance Control, Sensor Signal Conditioning and IoT Edge Nodes, Small Motor and Fan Speed Control, Automotive Interior Lighting and Accessory Control, Industrial Control and Process Monitoring.
LED Lighting and Signage Control
The PIC16F1509-I/P is well matched to LED lighting and signage controller applications because its on-chip Complementary Waveform Generator (CWG) and Numerically Controlled Oscillator (NCO) produce high-resolution PWM and frequency-shift-keyed waveforms without CPU overhead. The 18-channel 10-bit ADC monitors current sense amplifiers on each LED string, while the 4 enhanced PWM channels drive high-current MOSFET switches at dimming frequencies above 1kHz to avoid flicker. With 14KB Flash the firmware easily fits state-machine code, gamma-correction lookup tables, and DMX-512 command parsing. Compared to a discrete PWM controller, the integrated PIC16F1509 reduces BOM by replacing external PWM ASICs and op-amp comparators with a single $1.43 (qty 1000) device.
Recommended
Battery Charging and Power Management
For Li-ion battery charging and DC-DC converter control, the PIC16F1509-I/P integrates a 10-bit ADC with 18 input channels - enough to monitor battery voltage, charge current, cell temperature (via NTC), and input rail voltage simultaneously without an external analog MUX. The MSSP peripheral runs I2C to communicate with a fuel gauge such as the PIC16F1509 itself when configured as a slave. The HFINTOSC with 4x PLL delivers 32MHz system clock for fast ADC sampling and closed-loop PI control at 100kHz update rates. The wide 2.3V to 5.5V VDD range supports direct operation from a single Li-ion cell (2.5V to 4.2V) without an LDO.
Recommended
Consumer Appliance Control
In small kitchen appliances (coffee makers, slow cookers, blenders) the PIC16F1509-I/P provides capacitive-touch sensing via the 10-bit ADC with the CTMU peripheral for water-level and temperature measurement. Its 18 I/O pins drive relays, triac optocouplers, seven-segment LED displays, and buzzer feedback. The 256-byte EEPROM stores user presets without external memory, and self-programmable Flash enables firmware updates for new brew profiles or regional voltage settings. The -40C to +85C industrial temperature range covers steam and under-cabinet environments, while the 20-pin PDIP remains easy to hand-solder during prototyping.
Recommended
Sensor Signal Conditioning and IoT Edge Nodes
The PIC16F1509-I/P serves as an IoT edge-node controller aggregating data from multiple analog sensors. Its 10-bit ADC with 18 channels reads thermistors, photodiodes, soil moisture probes, and gas sensor outputs without external signal conditioning. The CLC (Configurable Logic Cell) implements hardware debouncing and event-trigger logic, allowing the CPU to sleep in low-power mode until an interrupt fires. The integrated EUSART and MSSP peripherals connect to LoRa, Wi-Fi, or Bluetooth modules via UART or SPI. With 14KB Flash, the firmware fits a complete sensor-fusion state machine plus a TLS-friendly crypto library stub for secure boot.
Recommended
Small Motor and Fan Speed Control
Brushless DC fans and small permanent-magnet motors benefit from the PIC16F1509-I/P's 4 enhanced PWM channels with complementary outputs and programmable dead-band. The CWG peripheral generates complementary 3-phase drive waveforms for sensorless BLDC commutation, while the 10-bit ADC reads back-EMF zero-crossing points for rotor position estimation. At 20MHz the control loop runs at 50us update intervals, sufficient for fans up to 50,000 RPM. The HFINTOSC eliminates crystal cost in cost-sensitive fan assemblies.
Recommended
Automotive Interior Lighting and Accessory Control
For automotive interior lighting, ambient LED strips, and accessory modules (USB chargers, heated-seat controllers), the PIC16F1509-E/P extended-temperature variant is AEC-Q100 qualified and rated -40C to +125C. The PIC16F1509-I/P (industrial grade) suits non-safety cabin electronics where AEC-Q100 is not mandatory. The device's CWG and NCO generate smooth PWM dimming curves for ambient LEDs while the EUSART connects to the vehicle CAN bus via an external MCP2515 transceiver. The 14KB Flash supports LIN slave stack and diagnostic routines per Microchip application note AN729.
Recommended
Industrial Control and Process Monitoring
In industrial 24V PLC-style I/O modules and process instrumentation, the PIC16F1509-I/P provides 18 digital I/O lines with interrupt-on-change for limit-switch and quadrature-encoder inputs. The 10-bit ADC monitors 4-20mA current loops through a 250-ohm sense resistor, while the MSSP peripheral drives an I2C LCD or EEPROM for local HMI. The 20-pin PDIP is preferred for through-hole industrial assemblies that require robust conformal coating. At 5V VDD the device is directly compatible with legacy industrial logic families.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1509-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1509-E/P | PIC16F1508-I/P | PIC16F1459-I/SS |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin PDIP | 20-pin PDIP (same) | 20-pin PDIP (same) | 20-pin SSOP |
| Flash Program Memory | 14 KB | 14 KB (same) | 7 KB (-50%) | 14 KB (same) |
| Data RAM | 512 B | 512 B (same) | 256 B (-50%) | 1 KB (+100%) |
| EEPROM | 256 B | 256 B (same) | 256 B (same) | 256 B (same) |
| Maximum CPU Clock | 20 MHz | 20 MHz (same) | 20 MHz (same) | 20 MHz (same) |
| I/O Pins | 18 | 18 (same) | 18 (same) | 18 (same) |
| ADC Channels | 18 x 10-bit | 18 x 10-bit (same) | 12 x 10-bit | 12 x 10-bit |
| Operating Temperature | -40C to +85C (industrial) | -40C to +125C (extended, AEC-Q100) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| USB Support | No | No | No | Yes (USB 2.0 FS device) |
Key Differentiators
- Integrated CLC, CWG, and NCO peripherals absent on most PIC16 mid-range devices (vs PIC16F877A-I/P (legacy PIC16F877 family))
- 14KB Flash with self-programmable boot loader support (vs PIC16F1508-I/P (lower-memory sibling))
- Industrial temperature range with extended-grade -E variant available (vs PIC16F1459-I/SS (USB-capable variant))
Design Notes
Decouple VDD (pin 15) with a 100nF X7R ceramic capacitor placed within 3mm of the pin, and add a 10uF bulk tantalum or aluminum-polymer capacitor on the same rail. According to Microchip datasheet DS40001606D, the PIC16F1509-I/P draws up to 30mA active at 20MHz / 5V and 20nA in sleep with WDT disabled - the 10uF bulk capacitor sustains VDD during high-current peripheral switching events such as ADC bursts or CWG commutation. Tie the MCLR/RA5 pin (pin 3) to VDD through a 10kohm pull-up resistor unless the MCLRE configuration bit is cleared in firmware.
Place the ICSP programming header (PGD/RC7 on pin 13, PGC/RC6 on pin 12, MCLR/RA5 on pin 3) on the PCB edge with a 0.1 inch pin header so the PICkit 3 or MPLAB ICD 3 can connect without removing the board from its enclosure. Per Microchip datasheet DS40001606D, ICSP requires that the PGD and PGC lines be pulled to known states via 4.7kohm resistors to VDD or VSS if the application circuitry could otherwise drive them during programming. Allow 3mm clearance around the ICSP pads to avoid probe shorts.
Configuration bits must be set explicitly before code execution begins. Common pitfalls include leaving FOSC = '100x' (external clock only) while relying on the internal oscillator, leaving MCLRE = '1' and forgetting the MCLR pull-up (causes intermittent resets), and selecting the wrong BOR threshold (a 3.3V system with the 2.85V BOR setting will reset whenever the rail droops below 2.85V). The configuration bits are documented in Microchip datasheet DS40001606D register 14-1. Use the MPLAB X IDE 'Configuration Bits' window to verify before programming.
Estimated: at 5V VDD, 20MHz CPU clock, 100% CPU utilization, peripherals enabled, the PIC16F1509-I/P consumes approximately 5.5mA from VDD, dissipating 27.5mW of power. The 20-pin PDIP package has a junction-to-ambient thermal resistance (theta_JA) of approximately 80C/W, yielding a 2.2C junction-temperature rise above ambient - well within the -40C to +85C industrial rating. No heatsink is required. At 3.3V VDD the active current drops to approximately 2.5mA and dissipation falls to 8.25mW.
Compliance Information
RoHS and REACH compliance per Microchip product page. Lead-free and halogen-free per Microchip PIC16F1509 product environmental certification. The PIC16F1509-I/P is industrial-grade - AEC-Q100 qualified parts carry the -E suffix (e.g. PIC16F1509-E/P). The PIC16F1509-I/P itself is not AEC-Q100 qualified.
