PIC16F1509-E/SS - 8-bit 20MHz MCU, 14KB Flash, 20-SSOP | Microchip
MPN: PIC16F1509-E/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.42 | $24.20 |
| 100 | $2.01 | $201.00 |
| 500 | $1.78 | $890.00 |
| 1,000 | $1.44 | $1,440.00 |
PIC16F1509-E/SS Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, RAM, and peripherals on one die. PIC16F series microcontrollers from Microchip use a RISC architecture optimized for deterministic interrupt response and low power consumption; they sit beneath the PIC18 and dsPIC families in the product hierarchy and target cost-sensitive embedded designs where simplicity and small footprint dominate.
Key features of the PIC16F1509 include a 10-bit ADC, three on-chip timers, enhanced PWM, configurable logic cells (CLC), a complementary waveform generator (CWG), and the Numerically Controlled Oscillator (NCO) peripheral that enables fine-grained frequency synthesis. The device supports the XLP (eXtreme Low Power) family with nanoWatt XLP technology and operates from 2.3V to 5.5V, simplifying battery-powered designs. The extended (-E) temperature grade allows deployment in industrial and outdoor environments.
The PIC16F1509 architecture uses a Harvard-style 14-bit instruction word Flash store and an 8-bit data path, with hardware stack and interrupt controller supporting low-latency response. On-chip Core Independent Peripherals (CIPs) such as the CLC and CWG execute logic and timing functions without CPU intervention, freeing the core for application code and reducing firmware complexity in mixed-signal designs.
Typical applications include LED lighting control with smooth dimming, white-good appliance user interfaces, sensor signal conditioning, small motor and fan control with closed-loop PWM, and IoT edge nodes where low sleep current and integrated peripherals reduce external component count.
When designing with the PIC16F1509, ensure the ICSP programming pins are routed to a debug header for in-circuit programming and verify the SSOP land pattern matches the 0.65 mm pitch. Use Microchip's MPLAB X IDE and MPLAB XC8 compiler for development, and consider the PIC16F1509-I/SS variant for the industrial -40C to +85C grade when the extended -40C to +125C grade is not required.
This page synthesizes distributor pricing, drop-in alternative listings, and practical design notes not consolidated in the manufacturer datasheet. Engineers can compare the PIC16F1509 against same-family parts and third-party equivalents to optimize BOM cost, lead time, and qualification grade for their specific application.
Drop-in alternatives for PIC16F1509-E/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 PIC16F1509-E/SS (same form factor and footprint) — differing in Core, Package, ADC, Internal Oscillator, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1509-I/SS
✅ Drop-In✓ In Stock
$1.36 / Unit
View Datasheet →PIC16F1459-I/SS
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F1459-E/SS
✅ Drop-In✓ In Stock
$1.78 / Unit
View Datasheet →PIC16F1509-E/SS Maximum Ratings & Electrical Characteristics
| Core | PIC16 8-bit RISC, enhanced mid-range |
| Instruction Set | 14-bit wide, 200 ns instruction execution |
| Maximum CPU Clock | 20 MHz |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 512 B |
| Digital I/O Pins | 18 |
| Supply Voltage | 2.3 V to 5.5 V |
| Operating Temperature Range | -40C to +125C (Extended grade, -E) |
| Package | 20-pin SSOP (0.209 inch / 5.30 mm width) |
| Mounting Type | Surface Mount |
| Low-Power Feature | nanoWatt XLP technology |
| Core Independent Peripherals | CLC, CWG, NCO, enhanced PWM |
| RoHS Status | Compliant |
PIC16F1509-E/SS Pin Configuration
| Pin 1 | VDD — Positive supply voltage (2.3V to 5.5V) |
| Pin 2 | RA5 — Digital I/O / analog input / ICSPDAT |
| Pin 3 | RA4 — Digital I/O / analog input / ICSPCLK |
| Pin 4 | RA3 — Digital I/O / analog input / MCLR (reset) |
| Pin 5 | RC5 — Digital I/O |
| Pin 6 | RC4 — Digital I/O |
| Pin 7 | RC3 — Digital I/O / analog input |
| Pin 8 | RC2 — Digital I/O / analog input |
| Pin 9 | RC1 — Digital I/O / analog input |
| Pin 10 | RC0 — Digital I/O / analog input |
| Pin 11 | RA2 — Digital I/O / analog input |
| Pin 12 | RA1 — Digital I/O / analog input / ICSPCLK alternate |
| Pin 13 | RA0 — Digital I/O / analog input / ICSPDAT alternate |
| Pin 14 | VSS — Ground reference |
| Pin 15 | RA7 — Digital I/O / analog input / oscillator input |
| Pin 16 | RA6 — Digital I/O / analog input / oscillator output |
| Pin 17 | RC7 — Digital I/O / analog input |
| Pin 18 | RC6 — Digital I/O / analog input |
| Pin 19 | RB7 — Digital I/O |
| Pin 20 | RB6 — Digital I/O |
Typical Applications
PIC16F1509-E/SS is suitable for 6 applications: LED Lighting and Dimming Control, White Goods and Appliance User Interfaces, Sensor Signal Conditioning and IoT Edge Nodes, Small Motor and Fan Speed Control, Automotive Cabin and Body Electronics, Battery-Operated Handheld Instruments.
LED Lighting and Dimming Control
The PIC16F1509-E/SS is well suited to LED driver and dimming controllers because its 20 MHz CPU clock, three on-chip timers, and enhanced PWM module deliver smooth 16-bit PWM resolution for color-mixing and warm-dim profiles. The CWG (Complementary Waveform Generator) provides dead-band control for half-bridge LED stages without firmware overhead, while the NCO peripheral generates dithered frequencies for flicker-free dimming at low duty cycles. At 2.3V to 5.5V supply, the part drops directly onto a 3.3V or 5V LED-driver rail, and the extended -40C to +125C grade supports enclosed luminaire thermal environments.
Recommended
White Goods and Appliance User Interfaces
In washing machines, dishwashers, and microwave ovens, the PIC16F1509-E/SS drives segmented LCD or LED displays, capacitive touch buttons, and rotary encoders while supervising motor and heater timing. Its 18 digital I/O pins accept multiple keypads and rotary inputs in parallel, and the CLC cells combine switch inputs without CPU wake-ups, dropping average sleep current to nanoampere levels. The extended temperature grade tolerates the high ambient inside appliance cabinets, and the 20-pin SSOP fits standard daughter boards for user-interface modules.
Recommended
Sensor Signal Conditioning and IoT Edge Nodes
The PIC16F1509-E/SS conditions analog sensor signals through its 10-bit ADC and routes them via Core Independent Peripherals to UART, SPI, or I2C without waking the CPU, reducing average current in battery-powered edge nodes. The 14 KB Flash holds typical LoRaWAN or Zigbee stack shims plus application code, while the 512 B RAM is sufficient for packet buffers and sensor fusion state. nanoWalt XLP technology extends coin-cell lifetime, and the extended temperature grade supports outdoor or attic-mounted sensor installations.
Recommended
Small Motor and Fan Speed Control
Brushless DC fans, small pumps, and stepper-motor drives benefit from the PIC16F1509-E/SS enhanced PWM, CWG, and NCO peripherals which generate commutation timing and speed-loop control without external logic. The 20 MHz CPU clock runs a 1 kHz PID loop with margin for housekeeping tasks, and 18 I/O pins accept Hall sensors, tachometer feedback, and direction control simultaneously. With 2.3V to 5.5V supply, the MCU integrates directly with 3.3V gate drivers; the extended temperature grade suits under-hood automotive and industrial cabinet environments.
Recommended
Automotive Cabin and Body Electronics
Interior lighting, mirror controllers, and HVAC flap motors use the PIC16F1509-E/SS because the extended -40C to +125C grade covers automotive cabin thermal swings and the CWG peripheral drives half-bridge FET stages for LED backlighting and small actuators. The 14 KB Flash stores lookup tables for ambient-light curves, and the 10-bit ADC reads potentiometer positions for HVAC blend doors. While the part is not AEC-Q100 qualified, its extended grade and nanoWalt XLP sleep current suit non-safety cabin applications where cost dominates over formal automotive certification.
Recommended
Battery-Operated Handheld Instruments
Handheld multimeters, barcode scanners, and portable medical monitors rely on the PIC16F1509-E/SS for its nanoWalt XLP sleep current under 20 nA typical, allowing months of standby on a single CR2032 coin cell. The 20 MHz CPU clock executes measurement DSP loops with headroom for display refresh, while the 18 I/O pins drive segmented LCDs, keypads, and serial ports. The extended temperature grade supports outdoor field service, and the SSOP-20 footprint is small enough to fit alongside battery holders and sensors on compact PCBs.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1509-E/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1509-I/SS | PIC16F1509-E/P | PIC16F1508-I/SO | PIC16F1459-I/SS | PIC16F1459-E/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP (0.209 inch / 5.30 mm) | 20-SSOP (0.209 inch / 5.30 mm) - same | 20-PDIP (300 mil) - through-hole | 20-SOIC (0.295 inch / 7.50 mm) | 20-SSOP (0.209 inch / 5.30 mm) - same | 20-SSOP (0.209 inch / 5.30 mm) - same |
| Flash Memory | 14 KB (8K x 14) | 14 KB | 14 KB | 7 KB (50 percent smaller) | 14 KB | 14 KB |
| RAM | 512 B | 512 B | 512 B | 256 B (50 percent smaller) | 1 KB (2x larger) | 1 KB (2x larger) |
| CPU Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 32 MHz (60 percent faster) | 32 MHz (60 percent faster) |
| Temperature Grade | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) |
| Digital I/O Pins | 18 | 18 | 18 | 18 | 18 | 18 |
| USB Peripheral | No | No | No | No | Yes (USB 2.0 FS) | Yes (USB 2.0 FS) |
| Approx Unit Price (USD) | $1.44 - $2.85 | $1.40 - $2.80 (similar) | $1.55 - $3.10 (slightly higher, through-hole) | $1.20 - $2.40 (lower, smaller flash) | $1.85 - $3.30 (higher, adds USB) | $1.95 - $3.50 (higher, adds USB + extended grade) |
Key Differentiators
- Extended -40C to +125C temperature grade (vs PIC16F1509-I/SS)
- Surface-mount SSOP-20 footprint (vs PIC16F1509-E/P)
- Doubled program memory vs PIC16F1508 (vs PIC16F1508-I/SO)
- No USB peripheral but richer CIPs vs PIC16F1459 (vs PIC16F1459-I/SS)
Design Notes
Estimated: SSOP-20 land pattern requires 0.65 mm pitch pads with 0.40 mm pad width and 1.95 mm pad length to meet IPC-7351 nominal footprints. Route VDD and VSS traces at least 0.20 mm wide, place a 100 nF decoupling capacitor within 3 mm of pin 1 (VDD) and pin 20 (VSS), and provide a 10 uF bulk capacitor on the same rail. Expose the ICSP pins (RA0/RA1) on a 6-pin header for in-circuit programming without removing the MCU from the board.
The nanoWalt XLP sleep current on the PIC16F1509 is specified in the low-nanoampere range with the Watchdog Timer disabled and the ADC off. For battery-life calculations, use the datasheet's I-T characteristic curves (not a single number) because sleep current varies with WDT state, BOR enable, and temperature. Adding a 100 nF bypass within 3 mm of VDD prevents inrush glitches when waking from sleep into ADC sampling.
Do not confuse the PIC16F1509-E/SS (SSOP-20, 0.209 inch / 5.30 mm body) with the PIC16F1509-I/SO (SOIC-20, 0.295 inch / 7.50 mm body) - the two packages share the 1.27 mm pin pitch but have different body widths, so a PCB designed for one cannot accept the other without rework. Also note that the -E (extended) and -I (industrial) suffixes refer only to temperature grade, not package; verify both suffix and package code before placing the order to avoid receiving an industrial-grade part for an extended-temperature design.
When using the HFINTOSC as the primary clock source, the internal oscillator output drives the system clock with low jitter suitable for UART communication up to the datasheet-specified maximum baud rate. For SPI or I2C buses longer than 50 mm, add 4.7 kohm pull-ups on I2C lines and place 22 ohm series resistors near the MCU on SPI outputs. The CWG peripheral generates complementary PWM outputs with programmable dead-band, eliminating shoot-through in half-bridge FET stages without external delay lines.
Compliance Information
RoHS compliant per Microchip product page and DigiKey listing. AEC-Q100 not qualified - the -E temperature grade alone is not equivalent to automotive certification; for AEC-Q100 qualified PIC16 parts, consult the Microchip automotive MCU portfolio separately. Lead-free reflow profile JEDEC J-STD-020 compatible.
