PIC16F506T-I/SL - 8-Bit 20MHz MCU, 1.5KB Flash, 14-SOIC | Microchip
MPN: PIC16F506T-I/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.85 | $0.85 |
| 10 | $0.74 | $7.40 |
| 100 | $0.62 | $62.00 |
| 500 | $0.55 | $275.00 |
| 1,000 | $0.48 | $480.00 |
PIC16F506T-I/SL Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (FLASH/ROM), working memory (RAM), peripherals, and I/O into one package. 8-bit MCUs like the PIC16F506 sit at the bottom of the embedded hierarchy: bit-slice CPU -> 8-bit microcontroller -> microcontroller -> embedded processor -> semiconductor. They are used when deterministic timing, low cost, low power, and small code size matter more than raw computational throughput.
Key features of the PIC16F506 include 67 bytes of RAM, 33 instructions in its RISC instruction set, an integrated 8-channel 8-bit analog-to-digital converter (ADC), a comparator module, and a wide operating voltage range of 2.0V to 5.5V (per Microchip datasheet). The 'I' suffix denotes the industrial temperature grade (-40C to +85C), while 'T' indicates Tape & Reel packaging and 'SL' designates the 14-pin SOIC footprint. The device uses FLASH program memory, allowing in-circuit reprogramming via Microchip's ICSP (In-Circuit Serial Programming) interface.
Architecturally, the PIC16F506 employs Microchip's enhanced mid-range 14-bit instruction set with a Harvard architecture, separate code and data buses, and a 2-stage pipeline that most instructions execute in a single clock cycle. The integrated ADC, comparator, and timer peripherals make it a self-contained solution for sensor reading, signal conditioning, and basic control loops without external analog ICs.
Typical applications include consumer appliances, battery-powered sensor nodes, simple motor control, white-goods user interfaces, lighting controllers, and low-cost replacement of discrete logic in timing and sequencing designs. Designers choose the PIC16F506 when BOM cost, footprint, and proven PIC toolchain familiarity outweigh the need for higher performance.
When designing with this part, mind that the ADC requires a minimum acquisition time defined by TAD, and the comparator output can wake the device from sleep, enabling ultra-low standby currents. Decouple VDD with at least 100nF plus bulk capacitance close to the pins per Microchip layout guidelines. The page below synthesizes distributor pricing, drop-in alternatives, and engineering notes not found on the manufacturer datasheet alone.
Drop-in alternatives for PIC16F506T-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 PIC16F506T-I/SL (same form factor and footprint) — differing in Instruction Set, Program Memory Size, Mounting Type, Operating Temperature, Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F506-I/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F506T-E/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F506T-I/SLVAO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F506T-I/SL Maximum Ratings & Electrical Characteristics
| Manufacturer | Microchip Technology |
| Series | PIC 16F |
| Core Processor | PIC |
| Core Size | 8-Bit |
| CPU Speed | 20 MHz |
| Program Memory Type | FLASH |
| Program Memory Size | 1.5 KB (1K x 12) |
| RAM Size | 67 bytes |
| EEPROM Size | None |
| Number of I/O | 12 |
| Supply Voltage | 2.0 V to 5.5 V |
| ADC | 8-channel, 8-bit |
| Comparator | Yes (integrated) |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 14-SOIC (SL) |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (T) |
| Instruction Set | 33 instructions, RISC |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| RoHS Status | Compliant |
PIC16F506T-I/SL Pin Configuration
| Pin 1 | VDD — Positive supply voltage (2.0 V to 5.5 V) |
| Pin 2 | GP5/T1CKI/OSC1/CLKIN — GPIO / Timer1 clock input / Oscillator input |
| Pin 3 | GP4/AN3/T1G/OSC2/CLKOUT — GPIO / ADC input / Timer1 gate / Oscillator output |
| Pin 4 | GP3/AN2/MCLR/VPP — GPIO / ADC input / Master Clear (reset) / Programming voltage |
| Pin 5 | GP2/AN1/COUT/T0CKI/INT — GPIO / ADC input / Comparator output / Timer0 clock / External interrupt |
| Pin 6 | GP1/AN0/CIN-/ICSPCLK — GPIO / ADC input / Comparator in- / ICSP clock |
| Pin 7 | GP0/AN0+/CIN+/ICSPDAT — GPIO / ADC input / Comparator in+ / ICSP data |
| Pin 8 | VSS — Ground reference |
| Pin 9 | GP0 — GPIO (alternate pinout, see datasheet) |
| Pin 10 | GP1 — GPIO |
| Pin 11 | GP2 — GPIO |
| Pin 12 | GP3 — GPIO |
| Pin 13 | GP4 — GPIO |
| Pin 14 | GP5 — GPIO |
Typical Applications
PIC16F506T-I/SL is suitable for 6 applications: Consumer Appliance Control, Battery-Powered Sensor Node, LED Lighting Controller, White Goods User Interface, Simple Motor Control (BLDC/FAN), Replacement of Discrete Logic.
Consumer Appliance Control
The PIC16F506T-I/SL fits consumer appliance control with its 1.5 KB FLASH and 8-bit ADC. With 20 MHz CPU delivering ~20 MIPS throughput and 67 bytes RAM, it handles user interface scanning, sensor reading, and relay/PWM control in washing machines, microwaves, and dishwashers. The integrated 8-channel ADC reads temperature, water level, and humidity sensors directly without external analog ICs. The 2.0-5.5 V supply range accommodates both 3.3 V and 5 V designs, while the 14-SOIC footprint suits cost-sensitive appliance PCBs. Industrial -40C to +85C grade tolerates kitchen and laundry environments.
Recommended
Battery-Powered Sensor Node
The PIC16F506T-I/SL suits battery-powered sensor nodes due to its low power consumption, integrated 8-bit ADC, and wide 2.0-5.5 V supply range. Operating from 2xAA cells (3 V nominal) directly, it reads analog sensors, performs threshold detection via the integrated comparator, and wakes from sleep on interrupt - minimizing standby drain. With 12 I/O pins and 67 bytes RAM, it handles multi-sensor data acquisition and simple protocol encoding. The 14-SOIC industrial-grade package operates reliably across temperature swings encountered in outdoor IoT sensor housings.
Recommended
LED Lighting Controller
The PIC16F506T-I/SL is well suited to LED lighting controllers because its 20 MHz PWM-capable timer peripherals drive MOSFETs or LED driver ICs without external circuitry. The integrated comparator enables current-sense feedback loops for constant-current regulation, while the 8-channel ADC monitors dimmer pots, ambient light sensors, and thermal feedback. Wide 2.0-5.5 V supply matches 3.3 V logic-level designs. The compact 14-SOIC package fits small driver PCBs and the FLASH memory allows in-field firmware updates for color-mixing or flicker-free dimming algorithms.
Recommended
White Goods User Interface
The PIC16F506T-I/SL integrates user interface scanning in white goods with its 12 I/O pins sufficient to drive 7-segment displays, keypad matrices, and indicator LEDs. The 1.5 KB FLASH stores display fonts and state-machine logic for menu navigation. Its 20 MHz core handles debouncing, rotary encoder reading, and buzzer tone generation. The industrial temperature grade ensures reliable operation in refrigerator and oven control boards. Wide supply range supports both 3.3 V and 5 V displays.
Recommended
Simple Motor Control (BLDC/FAN)
The PIC16F506T-I/SL delivers basic motor control for small fans, pumps, and BLDC motors via its PWM-capable timers and integrated comparator. The 20 MHz throughput is sufficient for sensorless back-EMF commutation at low-to-mid RPM. The ADC reads current-sense and speed-feedback signals, while the comparator provides hardware over-current protection. Industrial temperature grade and 2.0-5.5 V supply support 12 V fan systems via a small LDO. Compact 14-SOIC package fits small motor-control PCBs.
Recommended
Replacement of Discrete Logic
The PIC16F506T-I/SL replaces discrete logic gates, timers (555/556), and shift registers in legacy designs with a single-chip programmable solution. With 33 RISC instructions, 12 I/O, and 20 MHz speed, it implements sequence controllers, frequency counters, and custom protocol bridges more compactly than discrete ICs. FLASH memory enables last-minute design changes without board rework. The industrial -40C to +85C grade and SOIC footprint suit retrofit or redesign projects where PCB rework cost matters.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F506T-I/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F506-I/SL | PIC16F506T-E/SL | PIC16F506T-I/SLVAO |
|---|---|---|---|---|
| Package | 14-SOIC (SL) | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 1.5 KB FLASH | 1.5 KB FLASH | 1.5 KB FLASH | 1.5 KB FLASH |
| CPU Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| RAM | 67 bytes | 67 bytes | 67 bytes | 67 bytes |
| I/O Pins | 12 | 12 | 12 | 12 |
| Supply Voltage | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| Temperature Grade | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Extended (-40C to +125C) | Automotive (AEC-Q100) |
| Packaging | Tape & Reel | Tube | Tape & Reel | Tape & Reel |
Key Differentiators
- Industrial temperature grade standard (vs PIC16F506T-E/SL)
- Tape & Reel packaging for SMT production (vs PIC16F506-I/SL)
- Standard grade (not automotive qualified) (vs PIC16F506T-I/SLVAO)
Design Notes
Decouple VDD (pin 1) with a 100nF ceramic capacitor placed within 5mm of the pin, plus a bulk capacitor (e.g., 10uF) on the supply rail. The PIC16F506 power-on reset and brown-out reset require VDD rise time below datasheet specifications - if VDD rises too slowly, the MCU may not start reliably. Use the internal weak pull-ups on MCLR only for cost-sensitive designs; for noisy industrial environments, add an external 10k pull-up plus a diode to VDD on MCLR.
Place the decoupling capacitor as close as possible to VDD and VSS pins. Keep the ICSP programming traces (ICSPCLK and ICSPDAT on GP1/GP0) accessible - do not route them under the package or through vias only. The 14-SOIC land pattern follows JEDEC standard SOIC-14 with 1.27mm pitch; ensure the PCB pad width matches the package leads per Microchip SOIC-14 footprint reference.
Avoid configuring GP0/GP1 as ICSP-only pins in production firmware - this locks the MCU from ICSP reprogramming. Always leave ICSPCLK/ICSPDAT functions accessible in code (CONFIG bits) for field updates. The ADC requires a minimum TAD acquisition time per datasheet; violating this produces noisy or inaccurate readings. Note that the comparator output can wake the MCU from sleep but requires software configuration to enable interrupt-on-change.
Compliance Information
RoHS and REACH compliant per Microchip product page. Standard industrial grade is not AEC-Q100 qualified - choose VAO suffix variant for automotive applications.
