PIC16LC715-04/P
PIC16LC715-04/P - 3.5KB EPROM 8-bit MCU w/ ADC | Microchip DIP-40
The Microchip Technology PIC16LC715-04/P is a low-power 8-bit CMOS microcontroller from the PIC16 mid-range family with 3.5KB of EPROM program memory, 128 bytes of RAM, and an integrated multi-channel 8-bit A/D converter, housed in a 40-pin windowed CERDIP (P) package. The part is designed for 4 MHz (the "-04" speed suffix) operation from a 2.5V to 5.5V supply, making it well suited to battery-powered and 5V embedded designs. The device exposes 13 digital I/O pins with individual direction control, three timers (Timer0 8-bit, Timer1 16-bit with external crystal increment during sleep, Timer2 8-bit), a brown-out reset (BOR) circuit, and a programmable watchdog timer.
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripherals on one die. The PIC16 mid-range family is one of Microchip's long-running 8-bit RISC architectures (hypernyms: microcontroller -> MCU -> embedded controller -> semiconductor IC). PIC16C/LC devices use 14-bit instruction words and a Harvard architecture with separate program and data buses, optimized for deterministic interrupt latency. The "LC" prefix denotes the CMOS low-power process, while "C" denotes the standard EPROM process; the "L" prefix typically supports a lower VDD minimum than the C counterpart.
Key differentiating features include 13 I/O lines, 4-channel 8-bit ADC with selectable reference voltages, an on-chip brown-out reset (BOR) generator, and a windowed CERDIP package that allows the EPROM to be erased via UV exposure for prototyping and field updates. The device's 4 MHz maximum oscillator frequency keeps power consumption low, and its instruction cycle is one-quarter of the oscillator period (1 µs at 4 MHz). The integrated ADC eliminates the need for an external converter, reducing BOM cost and PCB area for sensor-interface designs.
Architecturally, the PIC16LC715 uses an enhanced mid-range 8-bit core with a 14-bit program word and 8-bit data path, an 8-level deep hardware stack, and direct/indirect addressing modes. The brown-out reset holds the MCU in reset when VDD drops below a programmable threshold, protecting EPROM and register contents. The combination of internal ADC, EPROM (rather than one-time-programmable OTP), and the UV-erasable CERDIP package makes the PIC16LC715-04/P especially useful for low-cost, low-volume production where firmware iteration is expected.
Typical end uses include sensor signal conditioning, industrial control logic, building automation nodes, simple closed-loop PID controllers, battery-powered instrumentation, and educational or hobbyist platforms where EPROM reprogrammability is valuable. Compared with newer PIC16F1xxx devices, the LC715 trades Flash for EPROM and offers a smaller pin count, but provides a familiar, well-documented mid-range core with abundant third-party code examples.
When designing with this part, note that the -04 speed grade requires an oscillator up to 4 MHz; for 20 MHz operation, the -20 suffix variant (PIC16LC715-20/P) is required. Always honor the VDD ramp-rate requirements to ensure clean BOR behavior, and place decoupling capacitors within 5 mm of each VDD/VSS pin pair.
This page synthesizes distributor pricing, same-brand drop-in alternatives, and practical engineering guidance that is not consolidated in any one manufacturer document.
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