PIC16F15243T-I/SO - 8-bit MCU, 3.5KB Flash, 20-SOIC | Microchip
MPN: PIC16F15243T-I/SO β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.95 | $0.95 |
| 10 | $0.85 | $8.50 |
| 100 | $0.74 | $74.00 |
| 500 | $0.65 | $325.00 |
| 1,000 | $0.58 | $580.00 |
PIC16F15243T-I/SO Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (Flash, RAM, EEPROM), and peripherals on a single silicon die. The PIC architecture uses a Harvard design with separate program and data buses, a RISC instruction set, and deterministic instruction timing. Within the broader hierarchy, an MCU belongs to the category of microcontrollers -> microprocessors -> semiconductors -> integrated circuits. The PIC16F152xx family in particular targets Core Independent Peripherals (CIPs), Intelligent Analog, and standard communication in compact pin-count packages.
Key features include a 10-bit Analog-to-Digital Converter (ADC) with internal voltage reference, two PWM modules, two Capture/Compare/PWM (CCP) peripherals, Peripheral Pin Select (PPS) for flexible I/O routing, hardware limit timer (HLT), watchdog timer (WDT), and the standard EUSART plus SPI/I2C communication modules. The XLP (eXtreme Low-Power) Sleep mode with nanowatt-level standby current enables battery-powered sensor applications that must operate for years on a single cell.
The PIC16F15243 architecture uses an enhanced mid-range 16-bit instruction word core optimized for C-code efficiency and fast interrupt response. On-chip peripherals are interconnected through the Microchip proprietary CIP bus, allowing the ADC, PWM, and timers to operate without CPU intervention, freeing the core for application logic. Functional Safety (FuSa) features support IEC 61508 SIL-2 capable system designs per the datasheet.
Typical applications include IoT sensor nodes, battery-powered wireless remote controls, low-cost home appliances, white goods user interfaces, LED lighting controllers, and small motor-control subsystems. The compact 20-SOIC footprint fits hand-held enclosures and densely populated PCBs.
Designers should evaluate RAM headroom (256 bytes is tight for buffered protocols), pick a programming/debug adapter from the PICkit/SNAP/MPLAB ICD family, and follow the datasheet recommended decoupling scheme (typically 100 nF plus 10 uF bulk near VDD). Migration within the PIC16F152xx family is straightforward when scaling memory or peripheral needs.
This page synthesizes distributor pricing, drop-in alternatives from the same family, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16F15243T-I/SO 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 PIC16F15243T-I/SO (same form factor and footprint) β differing in Package, Program Memory (Flash), ADC, CCP Modules, Communication.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
No drop-in alternatives available for this product.
Request AlternativesPIC16F15243T-I/SO Maximum Ratings & Electrical Characteristics
| Family | PIC16F152xx |
| Core | 8-bit PIC enhanced mid-range |
| Program Memory (Flash) | 3.5 KB (2K x 14 words) |
| SRAM | 256 bytes |
| CPU Speed | Up to 32 MHz |
| Operating Voltage | 1.8 V to 5.5 V |
| ADC | 10-bit, 1 module |
| PWM Modules | 2 |
| CCP Modules | 2 |
| Hardware Limit Timer (HLT) | Yes |
| Watchdog Timer (WDT) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Communication | EUSART, SPI, I2C |
| Package | 20-SOIC (0.295", 7.50 mm width) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Functional Safety (FuSa) | Yes (IEC 61508 capable per datasheet) |
| XLP Sleep Mode | Yes (nanowatt standby) |
| Pin Count | 20 |
| RoHS Status | Compliant |
PIC16F15243T-I/SO Pin Configuration
| Pin 1 | RA5 β Bidirectional I/O with PPS, also ICSPCLK |
| Pin 2 | RA4 β Bidirectional I/O with PPS |
| Pin 3 | RA3/MCLR β Bidirectional I/O or Master Clear (reset) input |
| Pin 4 | RA2 β Bidirectional I/O with PPS |
| Pin 5 | RA1/ICSDA β Bidirectional I/O with PPS, also ICSP data |
| Pin 6 | RA0 β Bidirectional I/O with PPS |
| Pin 7 | VSS β Ground reference |
| Pin 8 | RA7/OSC1 β I/O or external oscillator input |
| Pin 9 | RA6/OSC2 β I/O or external oscillator output |
| Pin 10 | RC0 β Bidirectional I/O with PPS |
| Pin 11 | RC1 β Bidirectional I/O with PPS |
| Pin 12 | RC2 β Bidirectional I/O with PPS |
| Pin 13 | RC3 β Bidirectional I/O with PPS |
| Pin 14 | RC4 β Bidirectional I/O with PPS |
| Pin 15 | RC5 β Bidirectional I/O with PPS |
| Pin 16 | RC6 β Bidirectional I/O with PPS |
| Pin 17 | RC7 β Bidirectional I/O with PPS |
| Pin 18 | VSS β Ground (or NC, refer to datasheet) |
| Pin 19 | VDD β Positive supply voltage (1.8V to 5.5V) |
| Pin 20 | VDD β Positive supply voltage (or NC, refer to datasheet) |
Typical Applications
PIC16F15243T-I/SO is suitable for 7 applications: IoT Sensor Node Controller, Battery-Powered Wireless Remote Control, Low-Cost Home Appliance Control, LED Lighting Controller, Small Motor Control Subsystem, Industrial Sensor Transmitter, Automotive Body Electronics Submodule.
IoT Sensor Node Controller
The PIC16F15243T-I/SO is well suited as a low-cost IoT sensor node controller thanks to its XLP Sleep mode with nanowatt standby current, 10-bit ADC, and PPS-based flexible I/O routing in a compact 20-SOIC package. The 32 MHz core enables fast ADC sampling and CIP-driven data aggregation while the CPU sleeps, reducing average system power to enable years of battery life on a single coin cell. The PIC16F15243's 1.8V-5.5V operating range allows direct connection to 2xAA, CR2032, or single-cell Li-ion sources without external regulation. Compared to higher-end Cortex-M0 parts, this MCU cuts BOM cost while retaining enough MIPS for typical sensor reads, threshold checks, and radio wake-up handshakes.
Recommended
Battery-Powered Wireless Remote Control
Hand-held wireless remote controls benefit from the PIC16F15243T-I/SO's XLP Sleep mode and 256-byte SRAM, which keep idle current in the nanowatt range while an EUSART-driven receiver wakes the core on packet detection. The two PWM channels can drive IR or LED backlighting directly, while the 10-bit ADC reads battery voltage for low-battery indication. Per the Microchip datasheet, the wide 1.8V-5.5V supply range accommodates fresh and end-of-life alkaline cells without boost converters, simplifying the analog front-end. The 20-SOIC footprint keeps the MCU small enough for thin enclosures typical of consumer remote designs.
Recommended
Low-Cost Home Appliance Control
White-goods and small home appliances use the PIC16F15243T-I/SO as the main controller thanks to its Functional Safety (FuSa) IEC 61508 support, hardware limit timer (HLT), and robust 20-SOIC industrial -40C to +85C temperature grade. The two CCP peripherals handle motor PWM and zero-cross detection, while the 10-bit ADC reads thermistor inputs for temperature regulation. Per Microchip documentation, the FuSa feature set reduces certification cost for safety-critical subsystems like washing machine lid locks or dishwasher pumps. The 3.5KB Flash accommodates typical appliance state machines with margin for protocol stacks.
Recommended
LED Lighting Controller
The PIC16F15243T-I/SO drives LED lighting systems via its two PWM channels and 10-bit ADC for ambient light sensing or color-mixing feedback. The PIC16F15243's PPS allows remapping PWM outputs to any I/O pin, simplifying PCB routing of multi-channel LED drivers. With XLP Sleep between lighting transitions, the MCU draws nanowatt standby current, which is critical for always-on ambient lighting controls drawing power from the AC mains via small transformers. Per the Microchip product page, the wide 1.8V-5.5V operating range supports direct connection to 3.3V or 5V LED driver rails without additional level translation.
Recommended
Small Motor Control Subsystem
Brushless DC and stepper motor control subsystems leverage the PIC16F15243T-I/SO's two CCP peripherals, hardware limit timer (HLT), and PPS for flexible PWM-to-pin routing. The 10-bit ADC reads back-EMF or shunt current for closed-loop control, while the EUSART and SPI ports interface to position encoders or host controllers. The PIC16F15243's 32 MHz instruction rate and CIP-based PWM timing deliver deterministic motor control without CPU intervention, freeing the core for supervisory logic. Per Microchip documentation, the 1.8V-5.5V operating range supports direct connection to single-cell Li-ion or 5V regulated motor rails.
Recommended
Industrial Sensor Transmitter
Industrial 4-20mA loop-powered sensor transmitters use the PIC16F15243T-I/SO because its nanowatt XLP Sleep and wide 1.8V-5.5V supply tolerance enable operation from loop currents as low as 3.5 mA. The 10-bit ADC digitizes sensor inputs with adequate resolution for temperature, pressure, or flow transmitters, while PPS routes SPI to ADC and EUSART to the loop modem. Per the Microchip datasheet, the -40C to +85C industrial temperature grade and FuSa support make the part suitable for safety-rated process instrumentation. The compact 20-SOIC footprint fits explosion-proof instrument enclosures typical of process plants.
Recommended
Automotive Body Electronics Submodule
Body-control submodules in non-safety automotive applications use the PIC16F15243T-I/SO for switch input scanning, LED dimming via PWM, and LIN/EUSART communication with the body controller. While the -I/SO part is industrial grade, the same die in -E or -Q grades supports extended automotive temperature, per Microchip product family documentation. The 3.5KB Flash handles switch-debounce state machines and LIN slave protocol stacks, while the 10-bit ADC reads switch voltages directly. The PIC16F15243's PPS simplifies routing PWM outputs to multi-color LED indicators on a tight PCB.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F15243T-I/SO β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F15244T-I/SO | PIC16F15223T-I/SO | PIC16F15213T-I/SO | PIC16F15243-I/SO | PIC16F15243T-I/REB | PIC16F15243-E/P |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SOIC | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same |
| Program Memory (Flash) | 3.5 KB | 7 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB |
| SRAM | 256 bytes | 512 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (extended) |
| Functional Safety (FuSa) | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Packaging Form | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel | Tube | Reel-pack prototype carrier | Tube (extended temp) |
Key Differentiators
- Functional Safety (FuSa) IEC 61508 capable at no extra cost (vs PIC16F15223T-I/SO)
- XLP nanowatt Sleep mode with active peripheral wake-up (vs PIC16F15244T-I/SO)
- Compact 20-SOIC footprint with PPS flexibility (vs PIC16F15243T-I/REB)
- Balanced Flash/RAM for typical sensor state machines (vs PIC16F15213T-I/SO)
Design Notes
Estimated: at VDD=3.3V, 32 MHz active mode, the PIC16F15243T-I/SO draws approximately 2-4 mA typical per Microchip datasheet curves. Place a 100nF ceramic decoupling capacitor as close as possible to each VDD pin (pins 19 and 20 on 20-SOIC), plus a 10uF bulk capacitor near the supply input. For XLP Sleep designs, verify wake-up source current budget against the sensor subsystem - PPS routing allows wake-up on any I/O edge without external interrupt controller.
Route MCLR (pin 3) with a 10k pull-up to VDD per Microchip programming specifications. Place the ICSP connector (typically 6-pin header with MCLR/VPP, VDD, VSS, ICSPDAT, ICSPCLK) accessible for in-circuit programming during production test. Keep the 20-SOIC footprint on a 0.05" (1.27 mm) pitch SOIC land pattern matching JEDEC SO-127, and ensure the ICSP traces do not cross noisy power traces to avoid programming glitches.
Do not exceed the 5.5V absolute maximum on VDD or any I/O pin - this will damage the part. The PIC16F15243T-I/SO has 256 bytes SRAM; if you buffer UART or I2C payloads in RAM, plan memory usage carefully to avoid stack overflow. The PPS feature is powerful but must be configured before enabling peripherals; peripheral defaults may not match your PCB routing.
Keep the external crystal or resonator (if used) within 0.5 inch (12.7 mm) of the OSC1/OSC2 pins (pins 8 and 9 on 20-SOIC) with a guard ring to VSS, per datasheet oscillator layout guidelines. Place load capacitors within 1-2 mm of the crystal pins. For internal oscillator-only designs (no external crystal), leave OSC1/OSC2 as I/O or NC per your PCB layout and configure the OSCCON register accordingly.
Compliance Information
RoHS compliant and lead-free per Microchip product page. AEC-Q100 not applicable to industrial-grade -I/SO part; AEC-Q100 variants exist in the same die family as -Q suffix parts per Microchip product family documentation. Halogen-free status not explicitly listed in distributor data.
