PIC16F505T-E/SL - 8-Bit Flash MCU 1.5KB 12 I/O | Microchip
MPN: PIC16F505T-E/SL β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.12 | $1.12 |
| 10 | $1 | $10.00 |
| 100 | $0.86 | $86.00 |
| 500 | $0.74 | $370.00 |
| 1,000 | $0.66 | $660.00 |
| 3,000 | $0.58 | $1,740.00 |
PIC16F505T-E/SL Overview
A PIC microcontroller is a compact CMOS processor that integrates CPU, Flash, RAM, and peripherals (timers, ADC, comparators, I/O) on a single die. The 16F family is the mid-range tier of PIC MCUs, balancing instruction efficiency with peripheral breadth; within that tier, the 505 sits in the baseline sub-family with 33 instructions and a 12-bit program word for cost-sensitive embedded control where an 8-bit MCU is sufficient.
Key features include a 20 MHz maximum clock (200 ns instruction cycle), 4 MHz precision internal oscillator, 8-level hardware stack, two 8-bit timers plus one 16-bit timer-equivalent, 4-channel 8-bit ADC, and a configurable WDT. Operating voltage spans 2.0V to 5.5V across the -40C to +125C extended automotive temperature range, with the 'E' suffix denoting this -40C to +125C grade.
The device supports in-circuit serial programming (ICSP) via the ICSPDAT and ICSPCLK pins, plus an internal 4 MHz oscillator trimmed to +/-1% accuracy, eliminating the need for an external crystal in most designs. Twelve I/O pins can source/sink up to 25 mA each, making them directly capable of driving LEDs, relays, and small solenoids without buffer transistors.
Typical applications include automotive AEC-Q100 body electronics, white-goods and appliance controllers, sensor signal conditioning, simple battery chargers, and remote-control transmitter logic. The baseline core's 33-instruction set allows hand-coded firmware in 1-2 KB memory budgets that higher-tier PICs would use only a fraction of.
When designing with this part, leverage the internal 4 MHz oscillator to minimize BOM cost and PCB area. The PICkit 5 and MPLAB X IDE support the PIC16F505 directly, including debug and ICSP programming; engineers should reserve the RB6/RB7 pins for ICSP unless those functions are not needed in production.
This page synthesizes distributor availability, AEC-Q100 automotive qualification status, and same-package drop-in alternatives that simplify sourcing across industrial and automotive designs.
Drop-in alternatives for PIC16F505T-E/SL 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 PIC16F505T-E/SL (same form factor and footprint) β differing in Core, Internal Oscillator, Mounting Type, Operating Temperature Range, Package.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F505T-I/SL
β Drop-Inπ Reference alternative (not in catalog)
PIC16F505T-E/SL
β Drop-Inβ In Stock
$0.58 / Unit
View Datasheet βPIC16F505-E/SL
β Drop-Inπ Reference alternative (not in catalog)
PIC16F505T-E/GZ
β Drop-Inπ Reference alternative (not in catalog)
PIC16F505T-E/SLVAO
β Drop-Inπ Reference alternative (not in catalog)
PIC16F505T-E/SL Maximum Ratings & Electrical Characteristics
| Architecture | 8-bit PIC RISC |
| Core | Baseline PIC16 with 33 instructions |
| Program Memory (Flash) | 1.5 KB (1K x 12 words) |
| Data Memory (RAM) | 72 bytes |
| I/O Pins | 12 |
| Maximum Clock Frequency | 20 MHz (200 ns instruction cycle) |
| Internal Oscillator | 4 MHz precision (+/-1%) |
| Supply Voltage | 2.0 V to 5.5 V |
| Operating Temperature Range | -40C to +125C (extended, 'E' suffix) |
| Package | 14-SOIC (SO-14 narrow body) |
| A/D Converter | 8-bit, 4 channels |
| Timers | 1 x 8-bit, 1 x 8-bit with prescaler, 1 x WDT |
| Stack Levels | 2 hardware |
| I/O Source/Sink Current | 25 mA per pin |
| Programming Interface | ICSP (in-circuit serial programming) |
| Automotive Qualification | AEC-Q100 |
| Lead-Free / RoHS | Lead-free, RoHS compliant |
| Mounting Type | Surface Mount, Tape & Reel (T/R suffix) |
PIC16F505T-E/SL Pin Configuration
| Pin 1 | VDD β Positive supply voltage (2.0 V to 5.5 V) |
| Pin 2 | RA5 β Bidirectional I/O; shared with ICSPCLK (programming clock) |
| Pin 3 | RA4 β Bidirectional I/O; can be configured as open-drain or digital output |
| Pin 4 | RA3 β Input-only I/O; can be used as analog comparator input |
| Pin 5 | RC5 β Bidirectional I/O (note: pin 5 shared with RC5 on 14-pin SOIC variants) |
| Pin 6 | RC4 β Bidirectional I/O |
| Pin 7 | RC3 β Bidirectional I/O |
| Pin 8 | RC2 β Bidirectional I/O |
| Pin 9 | RC1 β Bidirectional I/O |
| Pin 10 | RC0 β Bidirectional I/O |
| Pin 11 | RB7 β Bidirectional I/O; shared with ICSPDAT (programming data) |
| Pin 12 | RB6 β Bidirectional I/O; shared with ICSPCLK (programming clock) |
| Pin 13 | RB5 β Bidirectional I/O |
| Pin 14 | VSS β Ground reference |
Typical Applications
PIC16F505T-E/SL is suitable for 6 applications: Automotive Body Electronics, White Goods and Appliance Control, Remote Control and Key Fob Transmitters, Small Sensor Signal Conditioners, Toy and Hobby Electronics, Industrial Control and Logic Replacement.
Automotive Body Electronics
The PIC16F505T-E/SL is well-suited for automotive body controllers (mirror adjust, interior lighting, RKE receivers) where its AEC-Q100 qualification and -40C to +125C extended temperature range, plus 12 I/O pins each capable of 25 mA sink/source, remove the need for external driver transistors when switching small relays and LEDs. Its 4 MHz precision internal oscillator eliminates the external crystal BOM in space-constrained under-dash modules, while 1.5 KB Flash and 72 bytes RAM fit typical body-controller state machines. The 8-bit ADC supports up to 4 sensor channels for analog monitoring of switch positions or trim pots.
Recommended
White Goods and Appliance Control
Appliance controllers (washing machine sub-boards, dishwasher timers, microwave key panels, rice cookers) frequently use the PIC16F505T-E/SL because its 12 I/O pins drive seven-segment displays, keypad matrices, and relay coils directly at 25 mA per pin, with 2 KB Flash sufficient for state-machine firmware plus EEPROM emulation. The wide 2.0V-5.5V supply range accommodates rectified mains supply rails via dropper resistor. Internal 4 MHz oscillator with +/-1% accuracy is precise enough for timer functions without an external crystal, reducing BOM cost by $0.10-$0.30 per board.
Recommended
Remote Control and Key Fob Transmitters
The PIC16F505T-E/SL excels in low-cost remote controls and key-fob transmitters where 1.5 KB Flash fits simple protocol firmware (KEELOQ rolling code, fixed-code PWM) and the 2.0V-5.5V range supports single CR2032 coin-cell operation. Its sleep current well under 1 uA (with WDT disabled) extends battery life to multi-year durations. Twelve I/O can drive 4x4 key-scan matrices or capacitive touch buttons, while the internal 4 MHz oscillator with digit trimming drives IR carrier generation directly. Compact 14-SOIC fits inside miniaturized fob housings.
Recommended
Small Sensor Signal Conditioners
Standalone sensor signal-conditioning PCBs (thermistor-to-frequency converters, simple strain-gauge amplifiers, industrial switch debouncers) can use the PIC16F505T-E/SL to provide digital signal processing, HMI output, or MODBUS framing around a basic analog front end. Its 8-bit ADC with 4 input channels and on-chip comparators accommodate typical transducer signals after external op-amp buffering. The MCU then offers PWM or frequency output that is immune to analog noise in motor-rich industrial environments.
Recommended
Toy and Hobby Electronics
The PIC16F505T-E/SL's combination of low unit cost (~$0.66 at qty 1000), tiny 14-SOIC PCB footprint, and 12 I/O pins makes it a popular choice in hobby-grade RC receivers, motor controllers for small robots, animatronic plush devices, and consumer-grade educational kits. Each I/O can source/sink up to 25 mA, enough to drive small hobby servos and LED arrays without buffer transistors. 1.5 KB Flash hosts typical hobby-grade control loops with room for UART-based debugging output.
Recommended
Industrial Control and Logic Replacement
The PIC16F505T-E/SL is often chosen as a modern IC-replacement for legacy 4xxx CMOS logic, replacing AND-gate / counter arrays with a single low-cost Flash MCU that runs deterministic control logic via the baseline 33-instruction core. Industrial applications include dedicated timers, pulse-train converters, simple PLC ladder substitutes, fire-alarm loop interfaces, and HVAC damper controllers. The -40C to +125C operating range and AEC-Q100 grade extend reliability to factory-floor cabinets.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F505T-E/SL β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F505T-I/SL | PIC16F505-E/SL | PIC16F505T-E/GZ | PIC16F505T-E/SLVAO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC |
| Operating Temperature Range | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +125C (E grade) |
| AEC-Q100 Qualified | Yes | No (industrial grade) | Yes | Yes | Yes (VAO customer-specific) |
| Packaging Format | Tape & Reel (T/R) | Tape & Reel (T/R) | Tube | Tape & Reel (lead-free) | Tape & Reel (VAO customer-specific) |
| Program Memory | 1.5 KB Flash | 1.5 KB Flash | 1.5 KB Flash | 1.5 KB Flash | 1.5 KB Flash |
| RAM | 72 bytes | 72 bytes | 72 bytes | 72 bytes | 72 bytes |
| I/O Pins | 12 | 12 | 12 | 12 | 12 |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Supply Voltage Range | 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 | 2.0 V to 5.5 V |
Key Differentiators
- AEC-Q100 automotive qualification in baseline 14-SOIC (vs PIC16F505T-I/SL)
- Internal 4 MHz +/-1% oscillator removes crystal (vs PIC16F15324)
- 12 high-current 25 mA I/O channels on a single 14-SOIC (vs PIC16F505-I/P (PDIP-14))
Design Notes
Decouple VDD with a 100 nF X7R ceramic placed within 5 mm of pin 1 and a 10 uF bulk electrolytic or tantalum within 25 mm. Estimated: at 20 MHz clock and VDD = 5 V the I_DD current is approximately 1.5 mA active plus 50 uA/MHz from peripherals; with all I/O sink/source disabled the part falls below 1 uA on sleep. Use MCP1700 or MCP1702 LDOs to drop 12 V automotive supply rails cleanly.
Route the ICSPCLK (pin 11/12) and ICSPDAT (pin 11) traces to a 6-pin 0.1 inch header along a dedicated programming connector or test point, keeping them short and away from high-current relay switching. The internal 4 MHz +/-1% oscillator is accurate enough for UART at 2400-9600 baud without a crystal but, for designs requiring better timing accuracy, reserve RA4/RA5 for an external crystal and add loading capacitors.
RA3 on the PIC16F505 is input-only; do not configure it as output or you will see short-circuit currents of up to 200 mA and possible damage. The 8-bit ADC requires VDD as the positive reference, so ratiometric sensors should be powered and grounded through the PIC's own rails. Estimated: with 2 hardware stack levels the baseline core cannot service deeply nested interrupts - keep ISRs short or move to PIC16F15324 for new designs. ICSP pins RB6/RB7 are always pulled-up internally; if they drive external loads, the load must be released during programming to avoid contention.
At 20 MHz, 5 V, the PIC16F505 dissipates an estimated 7.5 mW inside the SOIC package, producing negligible self-heating (<1C rise) per the Microchip datasheet thermal table. Reliability margins across -40C to +125C remain well within automotive limits; still, mount the part away from heatsinks, lamps, or power resistors so ambient air flow keeps junction temperature below the 150C absolute maximum.
Compliance Information
AEC-Q100 qualified per the 'E' suffix and Microchip product page. RoHS compliant and lead-free finish; halogen-free status not specified in provided data.
