PIC16F526-I/MG - 8-Bit MCU, 1.5KB Flash, 20MHz | Microchip
MPN: PIC16F526-I/MG ✓ Hoạt độngPIC16F526-I/MG Tóm tắt
An 8-bit Flash microcontroller (MCU) is a small, self-contained computing device built around an 8-bit data path and non-volatile Flash program memory. It sits within a hierarchy of: 8-bit MCU -> microcontroller -> embedded controller -> semiconductor. PIC microcontrollers use a RISC-based Harvard architecture with separate program and data buses, and Flash parts like the PIC16F526 allow in-system reprogrammability while keeping unit cost low — particularly valuable in any-volume production where flexibility and lead time matter.
Key features include 1024 words of Flash program memory, 67 bytes of SRAM data memory, an 8-bit timer, a watchdog timer with on-chip 10 kHz nominal oscillator, and an internal 8 MHz calibrated oscillator (HFINTOSC). It offers 12 digital I/O pins, POR (Power-on Reset), BOR (Brown-out Reset), and an enhanced mid-range 14-bit instruction set. The device supports in-circuit serial programming (ICSP) via dedicated PGD/PGC pins for production-line firmware loading.
Architecturally, the PIC16F526 uses an enhanced mid-range core with a 14-bit instruction word, a two-stage pipeline, and hardware stack depth of 4, delivering predictable, deterministic interrupt latency. The internal oscillator and on-chip reset circuitry eliminate the need for most external components, allowing the entire MCU plus bypass capacitor to fit on a footprint as small as the 3x3 mm QFN.
Typical applications include battery-powered consumer devices (IR remote controls, low-end toys, PC peripherals), small appliance controls (coffee makers, fans, personal care tools), and LED lighting controllers. Industrial usage covers sensor signal conditioning modules, simple protocol bridges, and timer/replacement logic upgrades from older discrete 555-based designs.
When designing with this part, place a 0.1 uF decoupling capacitor as close as possible to the VDD pin, keep traces to the HFINTOSC node short to minimize EMI, and use ICSP clock/data lines with series resistors if the programming header is distant from the MCU.
This page consolidates distributor pricing, drop-in and family variants, and practical design notes that go beyond the manufacturer datasheet to accelerate component selection, sourcing, and PCB integration.
Bộ thay thế dễ dàng lắp đặt cho PIC16F526-I/MG — 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 PIC16F526-I/MG (cùng hình factor và footprint) — khác nhau ở Operating Temperature, Package, Timers, Internal Oscillator, ADC.
PIC16F526T-I/MG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F526-E/MG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F506-I/MG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F505-I/MG
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F526-I/MG Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit Enhanced Mid-Range |
| Program Memory | 1.5 KB Flash (1K x 14 words) |
| Data Memory (SRAM) | 67 B |
| Data EEPROM | Not present |
| Maximum CPU Speed | 20 MHz |
| Operating Voltage Range | 2.0 V to 5.5 V |
| I/O Pins | 12 |
| Timers | 1 x 8-bit Timer0 with prescaler |
| Watchdog Timer | Yes, with dedicated 10 kHz nominal internal WDT oscillator |
| Internal Oscillator | 8 MHz HFINTOSC (calibrated, software-selectable) |
| Reset Sources | POR, BOR, MCLR, WDT |
| Brown-out Reset | Yes, configurable |
| Instruction Set Width | 14-bit |
| Hardware Stack Depth | 4 levels |
| In-Circuit Programming | ICSP (PGD/PGC) |
| Hộp | 16-QFN (3x3 mm) with exposed thermal pad |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40C to +85C (Industrial -I grade) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16F526-I/MG
| Chân 1 | RA0/AN0 — Digital I/O / analog channel 0 (part-number dependent) |
| Chân 2 | RA1/AN1 — Digital I/O / analog channel 1 |
| Chân 3 | RA2 — Digital I/O |
| Chân 4 | RA3/MCLR/VPP — Digital I/O / Master Clear reset (active low) / ICSP programming voltage |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RA4 — Digital I/O (open-drain option on some PIC16 parts) |
| Chân 7 | RB4 — Digital I/O with interrupt-on-change |
| Chân 8 | RB5 — Digital I/O with interrupt-on-change |
| Chân 9 | RB6/ICSPCLK — Digital I/O / ICSP clock |
| Chân 10 | RB7/ICSPDAT — Digital I/O / ICSP data |
| Chân 11 | RC0 — Digital I/O |
| Chân 12 | RC1 — Digital I/O |
| Chân 13 | RC2 — Digital I/O |
| Chân 14 | RC3 — Digital I/O |
| Chân 15 | RC4 — Digital I/O |
| Chân 16 | VDD — Positive supply (2.0V to 5.5V) |
Ứng dụng tiêu biểu
PIC16F526-I/MG phù hợp cho 6 Áp dụngs: Consumer IR Remote Control, Small Appliance Control (Fans, Coffee Makers, Personal Care), Battery-Powered Sensor Node, LED Lighting Controller (Drive and Dimming), Industrial Timer / 555 Replacement, PC Peripheral Controller (Keyboards, Mice, Dongles).
Consumer IR Remote Control
The PIC16F526-I/MG is purpose-built for low-cost infrared remote controls in TV, set-top-box, and audio equipment. Its 1.5 KB Flash comfortably holds protocol stacks such as NEC, RC5, and SIRC, while the calibrated internal 8 MHz oscillator delivers accurate carrier timing without external crystals. Operating from 2.0V to 5.5V lets it run directly from two AAA cells, and the brown-out reset prevents spurious key presses during battery end-of-life. The 12 I/O pins can drive an LED, drive a TX carrier pin, and scan a 3x4 key matrix with wake-on-change interrupts, all in a 16-QFN 3x3 mm package that fits inside slim handset enclosures.
Được đề xuất
Small Appliance Control (Fans, Coffee Makers, Personal Care)
PIC16F526-I/MG is widely deployed in small household and personal-care appliances where cost, board area, and reliability matter. The internal oscillator eliminates an external resonator, the brown-out reset handles motor inrush sag, and the 12 I/O directly drive triac interface pins for heater or motor control. The 16-QFN 3x3 mm package drops onto sub-$1 BOM applications, while the -40C to +85C industrial temperature range supports kitchen and bathroom environments. Engineers appreciate the deterministic interrupt response for safety-critical timing in cooker and kettle end-products where UL/IEC 60335 compliance is required.
Được đề xuất
Battery-Powered Sensor Node
PIC16F526-I/MG fits wireless and wired sensor nodes where standby current and PCB area are tightest. The 8 MHz HFINTOSC plus selectable LF oscillator mode lets the design sleep at microamp-level draw and wake periodically to read sensors, while the 2.0V minimum supply supports single-cell Li coin or 2xAA chemistries. The on-chip watchdog timer with dedicated 10 kHz oscillator ensures the system recovers from software lockups without an external clock source. Combined with the 16-QFN 3x3 mm footprint, it integrates cleanly alongside low-power RF front ends, MEMS sensors, and FET drivers on a sub-200 sq mm sensor board.
Được đề xuất
LED Lighting Controller (Drive and Dimming)
The PIC16F526-I/MG is a strong fit for entry-level LED drivers and dimmer controllers where deterministic PWM-free timing or simple on-off toggling plus blinking patterns are required. The internal oscillator keeps BOM cost low for high-volume decorative and indicator lighting, while the 20 MHz core runs custom breathing/blink effects with minimal Flash footprint. Industrial -I temperature rating supports sealed luminaires. The 16-QFN 3x3 mm package tucks into MR16, PAR, and T-module form factors where 10 mm x 10 mm total MCU allocation is the design constraint.
Được đề xuất
Industrial Timer / 555 Replacement
Engineers upgrading legacy 555-based timing or sequencing circuits to a microcontroller choose PIC16F526-I/MG for price parity, more flexible timing, and integrated reset management. The internal oscillator and on-chip WDT replace astable timing components and discrete reset supervisors, while the 14-bit instruction set lets a single PIC16F526 replace multiple 555s plus support logic. Operating voltage to 5.5V makes it a 1:1 drop-in for +5V timer boards, and the 16-QFN 3x3 mm package reduces board area versus DIP-8 555 circuits.
Được đề xuất
PC Peripheral Controller (Keyboards, Mice, Dongles)
USB HID-class peripherals such as keyboards, mice, presentation clickers, and RF dongles fit on a PIC16F526-I/MG and supporting bill of materials under a 30 sq mm PCB area. The 14-bit RISC core runs HID report handlers and sleep-management routines in less than 1 KB of Flash, while the 12 I/O scan matrix keyboards and drive optical or scroll-wheel sensors. The internal oscillator plus brown-out reset keeps USB low-power suspend semantics reliable, and the 16-QFN 3x3 mm package scales to slim dongle enclosures. ICSP programming via PGD/PGC supports in-line product firmware personalization.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F526-I/MG — 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 | PIC16F526T-I/MG | PIC16F526-E/MG | PIC16F506-I/MG | PIC16F505-I/MG |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 16-QFN (3x3 mm) | 16-QFN (3x3 mm) - same | 16-QFN (3x3 mm) - same | 16-QFN (3x3 mm) - same | 16-QFN (3x3 mm) - same |
| Program Memory | 1.5 KB Flash | 1.5 KB Flash | 1.5 KB Flash | 1.5 KB Flash | 1.5 KB Flash |
| RAM | 67 B | 67 B | 67 B | 67 B | 72 B |
| Max CPU Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating Voltage Range | 2.0V to 5.5V | 2.0V to 5.5V | 2.0V to 5.5V | 2.0V to 5.5V | 2.0V to 5.5V |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Extended -40C to +125C | Industrial -40C to +85C | Industrial -40C to +85C |
| I/O Pins | 12 | 12 | 12 | 12 | 12 |
| Notable Extra Peripherals | WDT, BOR, internal 8 MHz oscillator | Same as base part | Same as base part | Adds 16-bit Timer1, 10-bit ADC | Adds Comparator module |
Bảo phân biệt quan trọng
- More Flash and richer peripherals within the same 16-QFN footprint (vsPIC16F505-I/MG)
- Industrial vs Extended temperature grade availability in the same 16-QFN (vsPIC16F526-E/MG)
- Drop-in 16-QFN compatibility with the PIC16F506 upgrade path (vsPIC16F506-I/MG)
Ghi chú thiết kế
Decouple the VDD pin with a 0.1 uF X5R or X7R ceramic capacitor placed within 2 mm of the package pin and routed directly to the VSS thermal pad. The PIC16F526-I/MG operates from 2.0V to 5.5V; using a 10 uF bulk cap in parallel is recommended for switching supplies and motor-driven rails where inductive kicks can momentarily drop VDD and trigger spurious BOR events.
Do not connect the MCLR pin directly to VDD without the standard 10 kohm pull-up plus series resistor ICSP circuit; this blocks ICSP in-system programming and prevents production firmware updates. Likewise, the PGD/PGC pins are multiplexed with RB7/RB6 and should not be hard-pulled externally or repurposed without isolating the programming header.
For QFN packages, the exposed thermal pad (EP) must be soldered to a copper pad of at least equal package footprint, stitched via-array to internal ground, to meet thermal and mechanical specifications. Missing this connection can cause intermittent operation or reflow defects. Place ground vias in a 1.0 mm to 1.2 mm pitch grid under the EP according to Microchip QFN layout guidelines.
Thông tin tuân thủ
RoHS and REACH compliance per Microchip product page. Not AEC-Q100 qualified — choose PIC16F526-E/MG only for extended-temperature, non-automotive environments. Lead-free and halogen-free per Microchip environmental certification.
