PIC16LC715-04/P - 3.5KB EPROM 8-bit MCU w/ ADC | Microchip DIP-40
MPN: PIC16LC715-04/P ✓ Hoạt độngPIC16LC715-04/P Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC715-04/P — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16LC715-04/P (cùng hình factor và footprint) — khác nhau ở Package, Mounting Type, Timers, ADC, Program Memory Size.
PIC16LC715-04I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC715-20/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC715-20I/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C715-04/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C715-04I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC715-04/P Tỷ lệ tối đa & tính chất điện
| Family | PIC16 mid-range 8-bit MCU |
| Program Memory Type | EPROM (UV-erasable, windowed CERDIP) |
| Program Memory Size | 3.5 KB (2048 x 14 words) |
| Data RAM | 128 bytes |
| Data EEPROM | Not present |
| Tần số xung maksimum | 4 MHz (the "-04" speed grade) |
| Instruction Cycle | 1 us at 4 MHz oscillator |
| Supply Voltage (VDD) | 2.5 V to 5.5 V |
| I/O Pins | 13 (with individual direction control) |
| ADC | 8-bit, 4 channels |
| Timers | Timer0 (8-bit), Timer1 (16-bit), Timer2 (8-bit) |
| Brown-Out Reset (BOR) | Yes, on-chip |
| Watchdog Timer | Yes, on-chip |
| Hộp | CERDIP-40 (windowed, 0.600 in) |
| Kiểu lắp đặt | Through-Hole |
| Khoảng nhiệt độ hoạt động | Commercial (0C to +70C) - confirm per lot |
| Trạng thái RoHS | Not compliant (contains lead, windowed CERDIP) |
Cấu hình chân PIC16LC715-04/P
| Chân 1 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Chân 2 | RA3/AN3 — PORTA bit 3 / analog input 3 |
| Chân 3 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 4 | RA5/SS/AN4 — PORTA bit 5 / slave select / analog input 4 |
| Chân 5 | VSS — Ground reference |
| Chân 6 | OSC1/CLKIN — Oscillator crystal input or external clock input |
| Chân 7 | OSC2/CLKOUT — Oscillator crystal output or clock output |
| Chân 8 | MCLR/VPP — Master clear reset (active low) / programming voltage |
| Chân 9 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Chân 10 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Chân 11 | NC — Not connected (per datasheet) |
| Chân 12 | NC — Not connected (per datasheet) |
| Chân 13 | NC — Not connected (per datasheet) |
| Chân 14 | VDD — Positive supply voltage (2.5 V to 5.5 V) |
| Chân 15 | NC — Not connected (per datasheet) |
| Chân 16 | NC — Not connected (per datasheet) |
| Chân 17 | NC — Not connected (per datasheet) |
| Chân 18 | RB0/INT — PORTB bit 0 / external interrupt input |
| Chân 19 | RB1 — PORTB bit 1 |
| Chân 20 | RB2 — PORTB bit 2 |
| Chân 21 | RB3 — PORTB bit 3 |
| Chân 22 | RB4 — PORTB bit 4 |
| Chân 23 | RB5 — PORTB bit 5 |
| Chân 24 | RB6 — PORTB bit 6 |
| Chân 25 | RB7 — PORTB bit 7 |
| Chân 26 | NC — Not connected (per datasheet) |
| Chân 27 | NC — Not connected (per datasheet) |
| Chân 28 | NC — Not connected (per datasheet) |
| Chân 29 | RC0 — PORTC bit 0 |
| Chân 30 | RC1 — PORTC bit 1 |
| Chân 31 | RC2 — PORTC bit 2 |
| Chân 32 | RC3 — PORTC bit 3 |
| Chân 33 | RC4 — PORTC bit 4 |
| Chân 34 | RC5 — PORTC bit 5 |
| Chân 35 | RC6 — PORTC bit 6 |
| Chân 36 | RC7 — PORTC bit 7 |
| Chân 37 | NC — Not connected (per datasheet) |
| Chân 38 | NC — Not connected (per datasheet) |
| Chân 39 | NC — Not connected (per datasheet) |
| Chân 40 | VDD — Positive supply voltage (2.5 V to 5.5 V) - second VDD |
Ứng dụng tiêu biểu
PIC16LC715-04/P phù hợp cho 6 Áp dụngs: Industrial Sensor Signal Conditioning, Battery-Powered Instrumentation, Building Automation Nodes, Educational and Hobbyist Platforms, Simple Closed-Loop PID Controllers, Legacy Equipment Drop-In Replacement.
Industrial Sensor Signal Conditioning
The PIC16LC715-04/P's integrated 4-channel 8-bit ADC and 13 digital I/O lines make it a cost-effective MCU for industrial sensor-interface nodes. The 2.5-5.5 V supply range lets it sit directly on a 24V->5V regulated rail while the on-chip BOR holds the MCU in reset during supply droops, preventing bad ADC reads during brown-outs. With 3.5 KB EPROM and 128 bytes RAM, it has room for linearization tables and PID loops that drive a 4-20 mA loop. The windowed CERDIP enables field firmware updates via UV erasure during commissioning or maintenance. At 4 MHz the ADC conversion takes approximately 20 us, fast enough for thermal/flow sensor sampling at 1 kHz.
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Battery-Powered Instrumentation
The LC suffix designates the low-power CMOS process, so the PIC16LC715-04/P is the natural fit for battery-powered data loggers and portable meters that draw single-digit mA active current. Operating from 2.5 V allows direct connection to two AA cells (3.0 V nominal) without a boost regulator, extending battery life. The BOR module protects EPROM contents when the cells discharge below the brown-out threshold, and the 4 MHz oscillator limits worst-case active power. The 8-bit ADC samples battery voltage and sensor inputs while the on-chip watchdog timer resets the MCU on firmware lockup. UV-erasable CERDIP lets designers iterate firmware without scrapping assembled boards.
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Building Automation Nodes
Building automation controllers - HVAC damper actuators, lighting keypads, and access-control readers - need a low-cost 8-bit MCU with mixed-signal I/O and proven long-term reliability. The PIC16LC715-04/P fits with its 4 ADC channels (for temperature, humidity, light, and potentiometer feedback), 13 digital I/O (for relays, buttons, LEDs, and a serial link), and the PIC16 mid-range core that engineers have shipped in millions of units since the 1990s. The CERDIP-40 through-hole package survives mechanical stress in wall-mounted enclosures better than fine-pitch SMD. BOR + watchdog timer ensure unattended nodes recover automatically from supply glitches.
Được đề xuất
Educational and Hobbyist Platforms
Universities, technical schools, and hobbyists continue to use the PIC16LC715-04/P because the UV-erasable windowed CERDIP lets students repeatedly erase and reprogram the same chip during lab sessions, lowering per-lab cost. The PIC16 mid-range instruction set is well documented in textbooks and online, and the 4 MHz instruction rate is slow enough to follow execution on a logic analyzer. The 13 I/O pins can drive LEDs, switches, and a UART link to a host PC. The CERDIP-40 through-hole form factor fits standard 0.6 in DIP breadboards and ZIF sockets, simplifying lab wiring. Third-party tools (MPLAB IDE, PICSTART+) support the PIC16LC715 family natively.
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Simple Closed-Loop PID Controllers
Low-bandwidth closed-loop controllers for temperature, pressure, or flow regulation fit well within the PIC16LC715-04/P's 3.5 KB EPROM and 4 MHz execution rate. The 8-bit ADC samples the process variable, while a PWM output (Timer2 drives the PWM peripheral) modulates a heater, valve, or pump. The PID algorithm runs in 128 bytes of RAM using fixed-point math, and the on-chip watchdog timer recovers the loop on firmware lockup. The windowed CERDIP enables last-minute tuning-table updates during factory commissioning without discarding the MCU. BOR ensures the loop restarts cleanly after supply interruptions.
Được đề xuất
Legacy Equipment Drop-In Replacement
The PIC16LC715-04/P remains in active production primarily as a long-term drop-in replacement for legacy 1990s and 2000s designs that originally used PIC16C715 or PIC16LC715 chips. Industrial equipment with 20+ year service lives - factory PLCs, motor drives, test fixtures - often needs exact form-fit-function replacements to avoid PCB rework. The windowed CERDIP-40 package, the 4 MHz oscillator, and the original pinout are preserved across all -04/-20 and C/LC variants, so spares can be stocked without redesign. Engineers maintaining such equipment should order PIC16LC715-04I/P for industrial temperature range.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC715-04/P — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16LC715-04I/P | PIC16LC715-20/P | PIC16LC715-20I/P | PIC16C715-04/P | PIC16C715-04I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | CERDIP-40 (windowed) | CERDIP-40 (windowed) - same | CERDIP-40 (windowed) - same | CERDIP-40 (windowed) - same | CERDIP-40 (windowed) - same | CERDIP-40 (windowed) - same |
| Max Clock Frequency | 4 MHz | 4 MHz | 20 MHz | 20 MHz | 4 MHz | 4 MHz |
| Supply Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 2.5 V to 6.0 V | 2.5 V to 6.0 V |
| Process | CMOS Low-Power (LC) | CMOS Low-Power (LC) | CMOS Low-Power (LC) | CMOS Low-Power (LC) | Standard CMOS (C) | Standard CMOS (C) |
| Temperature Range | Commercial (0C to +70C) | Industrial (-40C to +85C) | Commercial (0C to +70C) | Industrial (-40C to +85C) | Commercial (0C to +70C) | Industrial (-40C to +85C) |
| Program Memory | 3.5 KB EPROM | 3.5 KB EPROM | 3.5 KB EPROM | 3.5 KB EPROM | 3.5 KB EPROM | 3.5 KB EPROM |
| RAM / I/O Pins / ADC | 128 B / 13 I/O / 4-ch 8-bit ADC | 128 B / 13 I/O / 4-ch 8-bit ADC | 128 B / 13 I/O / 4-ch 8-bit ADC | 128 B / 13 I/O / 4-ch 8-bit ADC | 128 B / 13 I/O / 4-ch 8-bit ADC | 128 B / 13 I/O / 4-ch 8-bit ADC |
Bảo phân biệt quan trọng
- UV-erasable windowed CERDIP-40 enables repeated firmware updates without scrapping the chip (vsPIC16F716-I/P (Flash, one-time-erase-window-free but in PDIP-18))
- On-chip 4-channel 8-bit ADC eliminates an external converter (vsPIC16F84A (no ADC, requires external ADC chip))
- CMOS Low-Power (LC) process for battery-friendly operation (vsPIC16C715-04/P (standard CMOS process))
Ghi chú thiết kế
Place a 100 nF decoupling capacitor within 5 mm of each VDD/VSS pin pair (pins 5/14/40 share supply). For boards with long supply traces, add a 10 uF bulk capacitor near the MCU. The on-chip brown-out reset holds the device in reset until VDD crosses the BOR threshold; ensure your regulator's rise time meets the BOR spec to avoid in-rush reset loops.
Do not assume the PIC16LC715-04/P can operate at 20 MHz - the -04 suffix limits the oscillator to 4 MHz. For 20 MHz designs, choose the -20 suffix variant (PIC16LC715-20/P). Also, the CERDLC-40 package is not RoHS compliant because of the lead-containing glass and Kovar leads; for RoHS builds, use the SO or SS package suffix parts or migrate to the PIC16F716 Flash family.
Keep the oscillator traces (OSC1/OSC2, pins 6/7) short and surrounded by a ground guard ring to limit EMI coupling into the analog ADC inputs. Place the analog signals (AN0-AN3 on PORTA) away from digital switching lines, and route the analog ground (VSS at pin 3 or 5) directly to the power-supply ground star point. For UV-erasable windowed CERDLC, avoid placing the window under a heatsink or opaque housing.
Thông tin tuân thủ
Windowed CERDIP-40 package contains lead-bearing glass and Kovar leads, so the part is not lead-free. REACH and conflict-minerals status per Microchip product declarations. Not AEC-Q100 qualified - automotive applications should use AEC-Q100 qualified PIC16F equivalents.
