PIC16LF1508-I/SO
PIC16LF1508-I/SO - 8-Bit 20MHz XLP MCU 7KB Flash | Microchip
The Microchip Technology PIC16LF1508-I/SO is an 8-bit PIC16F-family microcontroller built on the enhanced mid-range PIC16 architecture, delivering 20 MHz (200 ns) instruction execution with 7 KB (4K x 14) of self-programmable Flash, 256 bytes of RAM, and a 10-bit ADC, all housed in a 20-pin SOIC (SO) package. It belongs to the PIC XLP (eXtreme Low Power) family, drawing as little as 20 nA in sleep mode while retaining full RAM and supporting peripheral operation from a 1.8V to 3.6V supply.
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (typically Flash), volatile data memory (SRAM), and peripheral functions such as ADCs, timers, communication interfaces, and I/O ports into one package. The PIC16F family sits within the broader PIC microcontroller hierarchy (8-bit PIC -> PIC16 enhanced mid-range -> PIC XLP low-power tier -> Microchip 8-bit MCU -> Microcontroller -> semiconductor). MCUs are the lowest-level processing units in embedded electronics, used wherever sensor reading, decision making, actuator control, or user-interface logic is required. Compared with 16-bit or 32-bit MCUs, 8-bit devices trade raw performance for deterministic behavior, low power, low cost, and code simplicity, making them dominant in cost-sensitive and battery-powered designs.
Key features of the PIC16LF1508-I/SO include 18 general-purpose I/O pins, an enhanced mid-range core with 49 instructions and 16 stack levels, an integrated 10-bit ADC with up to 12 channels, an on-chip temperature indicator, an 8-bit DAC with FVR (Fixed Voltage Reference) support, an Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART), and two MSSP modules that can each operate as SPI or I2C. The device supports both internal and external oscillator modes and includes a 4x PLL for 32 MHz operation from an 8 MHz internal source, giving designers flexibility to balance performance and BOM cost.
Architecturally, the PIC16LF1508 uses a Harvard bus with separate program and data paths, an instruction-pipelined core, and a wide variety of Core Independent Peripherals (CIPs) that execute logic without waking the CPU. The XLP nanoWatt sleep modes (down to 20 nA with RTCC, watchdog, and BOR disabled) and the IDLE/DOZE current-scaling modes make it suited for energy-harvesting and battery applications. Internal voltage reference, power-on reset, brown-out reset, and a windowed watchdog timer are all integrated, simplifying the bill of materials.
Typical applications include IoT sensor nodes, battery-powered remote controls, low-power wireless sensor interface boards, LED lighting controllers, small consumer appliances, hobby/STEM boards, and low-cost industrial control modules. The 18 I/O and 10-bit ADC allow it to read multiple analog sensors while driving PWM outputs or driving character displays. The wide 1.8V-3.6V operating range lets it run directly from a single Li-ion or two AA cells.
When designing with the PIC16LF1508-I/SO, ensure decoupling caps of 100 nF plus 10 uF are placed close to VDD/VCAP, follow Microchip's MSSP layout guidelines for I2C/SPI noise immunity, and configure unused pins as outputs low to minimize sleep current. The SOIC-20 footprint is friendly to hand-soldering and reflow, which is useful for prototypes and small production runs.
This page synthesizes distributor pricing, drop-in alternatives sourced from Microchip's own PIC16(L)F1508/9 datasheet family, and practical design notes not always collected in a single place on the manufacturer datasheet.
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