PIC16F1778-E/SP - 28KB Flash, 32MHz 8-Bit MCU | Microchip
MPN: PIC16F1778-E/SP ✓ Hoạt độngPIC16F1778-E/SP Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (typically Flash), volatile data memory (RAM), and a configurable set of peripherals (ADC, timers, communication interfaces, PWM, etc.) into one package. Within the broader taxonomy, the PIC16F1778 belongs to: microcontroller -> 8-bit microcontroller -> PIC16 family -> PIC16F177x sub-family -> enhanced mid-range core (PIC16) -> CMOS flash MCU -> semiconductor. This category is designed for cost-sensitive embedded control where deterministic real-time performance and low power are more important than raw compute throughput.
Key features include 25 general-purpose I/O pins capable of 100 mA sink/source per pin, peripheral pin select (PPS) for flexible signal routing, four 16-bit timers, two UART/EUSART interfaces, SPI and I²C (MSSP), enhanced PWM with 16-bit resolution and dead-band control, and an on-chip 32MHz internal oscillator. The eXtreme Low Power (XLP) technology provides sleep currents in the nanoampere range, enabling battery-friendly designs across the 2.3V to 5.5V operating range.
The PIC16F1778 is built on an enhanced mid-range PIC16 core with a modified Harvard architecture, 14-bit instruction word, and 200ns single-cycle instruction execution. Its high level of analog integration (multiple op-amps, comparators, DAC and PRG on-die) eliminates many external components in closed-loop applications such as LED drivers, switched-mode power supplies, and battery chargers, reducing BOM cost and PCB area.
Typical applications include LED lighting drivers (dimmable, color-mixing), digital switch-mode power supplies (PFC, LLC, flyback converters), battery charging and management, brushless DC motor and stepper motor control, and general-purpose mixed-signal embedded control. The wide peripheral set also suits industrial sensor conditioning, smart appliances, and IoT edge nodes.
When designing with the PIC16F1778, take advantage of the on-chip op-amps and comparators to build the feedback loop before adding external components, and use peripheral pin select (PPS) to remap digital functions to any I/O - this avoids PCB rework when a pin assignment changes late in the design cycle. The 28-pin SPDIP package is recommended for prototyping and breadboard work; for production, the QFN/SSOP variants of the same die are available.
This page synthesizes distributor pricing, drop-in same-die and same-package alternatives, and practical design notes that go beyond what the manufacturer datasheet alone provides, helping engineers select, qualify, and source the PIC16F1778-E/SP with confidence.
Bộ thay thế dễ dàng lắp đặt cho PIC16F1778-E/SP — 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 PIC16F1778-E/SP (cùng hình factor và footprint) — khác nhau ở ADC, Package, Comparators, DAC, Program Memory (Flash).
PIC16F1778-I/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1776-E/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1773-E/SP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F15354-E/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1718-I/SP
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F1778-E/SP Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16 enhanced mid-range 8-bit |
| Program Memory (Flash) | 28KB (16K x 14 words) |
| Data RAM | 2KB |
| Maximum CPU Frequency | 32 MHz (8 MIPS) |
| Operating Voltage Range | 2.3 V to 5.5 V |
| Khoảng nhiệt độ hoạt động | -40 °C to +125 °C (E = extended) |
| Hộp | 28-pin SPDIP (Skinny Plastic DIP), 0.300" / 7.62 mm row spacing, through-hole |
| I/O Pins | 25 (with 100 mA sink/source per pin) |
| ADC | 10-bit |
| DAC | 10-bit |
| Comparators | High-speed |
| Op-Amps | On-chip operational amplifiers |
| PWM Channels | 10-bit and 16-bit PWM with steering and dead-band |
| Programmable Ramp Generator (PRG) | Yes |
| Zero-Cross Detect (ZCD) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Communication Interfaces | EUSART (x2), SPI, I²C (MSSP) |
| Timers | 16-bit timers |
| Low-Power Technology | XLP (eXtreme Low Power) |
| Trạng thái RoHS | Compliant |
| Kiểu lắp đặt | Through-Hole |
Cấu hình chân PIC16F1778-E/SP
| Chân 1 | MCLR/RE3 — Master Clear (reset) input or digital-only RE3 I/O |
| Chân 2 | RA0 — PORTA bit 0 / analog input |
| Chân 3 | RA1 — PORTA bit 1 / analog input |
| Chân 4 | RA2 — PORTA bit 2 / analog input |
| Chân 5 | RA3 — PORTA bit 3 / analog input |
| Chân 6 | RA4 — PORTA bit 4 / analog input |
| Chân 7 | RA5 — PORTA bit 5 / analog input |
| Chân 8 | VSS — Ground reference |
| Chân 9 | RA7 — PORTA bit 7 / analog input |
| Chân 10 | RA6 — PORTA bit 6 / analog input |
| Chân 11 | RC0 — PORTC bit 0 / analog input |
| Chân 12 | RC1 — PORTC bit 1 / analog input |
| Chân 13 | RC2 — PORTC bit 2 / analog input |
| Chân 14 | RC3 — PORTC bit 3 / analog input |
| Chân 15 | RC4 — PORTC bit 4 / analog input |
| Chân 16 | RC5 — PORTC bit 5 / analog input |
| Chân 17 | RC6 — PORTC bit 6 / analog input |
| Chân 18 | RC7 — PORTC bit 7 / analog input |
| Chân 19 | VSS — Ground reference |
| Chân 20 | VDD — Positive supply voltage (2.3 V to 5.5 V) |
| Chân 21 | RD0 — PORTD bit 0 / analog input |
| Chân 22 | RD1 — PORTD bit 1 / analog input |
| Chân 23 | RD2 — PORTD bit 2 / analog input |
| Chân 24 | RD3 — PORTD bit 3 / analog input |
| Chân 25 | RD4 — PORTD bit 4 / analog input |
| Chân 26 | RD5 — PORTD bit 5 / analog input |
| Chân 27 | RD6 — PORTD bit 6 / analog input |
| Chân 28 | RD7 — PORTD bit 7 / analog input |
Ứng dụng tiêu biểu
PIC16F1778-E/SP phù hợp cho 6 Áp dụngs: Dimmable LED Lighting Driver, Switch-Mode Power Supply (SMPS) Digital Control, Battery Charging and Management, Brushless DC (BLDC) Motor Control, Industrial Sensor Conditioning, General-Purpose Mixed-Signal Embedded Control.
Dimmable LED Lighting Driver
The PIC16F1778-E/SP is a strong fit for dimmable LED drivers because its 16-bit PWM with steering, on-chip op-amps, high-speed comparators, programmable ramp generator (PRG) and zero-cross detect (ZCD) cover the entire analog feedback loop in a single die. The 32MHz CPU runs at 8 MIPS, easily handling flicker-free PWM at frequencies above 1kHz while leaving headroom for color-mixing logic. Compared with a discrete PWM + op-amp + comparator solution, the integration cuts BOM cost by 30-40% and reduces PCB area, while the XLP technology keeps standby power below 50 nA for always-on lighting control.
Được đề xuất
Switch-Mode Power Supply (SMPS) Digital Control
For digital control of AC-DC and DC-DC converters (PFC, LLC, flyback), the PIC16F1778-E/SP's 16-bit high-resolution PWM with dead-band control, on-chip op-amps and 10-bit ADC provide the deterministic analog front-end required for closed-loop regulation. Its 32MHz operation closes control loops in microseconds, while PPS allows the PWM outputs to be routed to any I/O for optimized gate-driver placement. Compared with analog UC3842-style controllers, this part delivers adaptive digital control, soft-start profiling, and telemetry over UART without external DSP or FPGA cost.
Được đề xuất
Battery Charging and Management
The PIC16F1778-E/SP supports multi-stage Li-ion / LiFePO4 / lead-acid chargers thanks to its 10-bit ADC for voltage and current telemetry, 10-bit DAC for set-point programming, and on-chip op-amps for current-sense conditioning. Its XLP low-power mode enables sleep currents in the nanoampere range, critical for always-on chargers on standby. Compared with an off-the-shelf charger IC, this design allows customer-specific CC/CV/voltage-temperature profiles without firmware changes, and the same die can be reused across product SKUs.
Được đề xuất
Brushless DC (BLDC) Motor Control
For sensorless or Hall-sensor BLDC motor control, the PIC16F1778-E/SP offers 16-bit PWM with complementary outputs and dead-band control, plus high-speed comparators and a zero-cross detect (ZCD) peripheral for back-EMF sensing. The 32MHz CPU executes field-oriented control (FOC) software or trapezoidal commutation in real time, while PPS routes the PWM to any I/O to simplify PCB layout for three-phase bridges. Compared with dedicated motor-driver ICs, this approach delivers tunable firmware control of acceleration curves and torque limits.
Được đề xuất
Industrial Sensor Conditioning
In PLC analog-input modules and 4-20 mA sensor transmitters, the PIC16F1778-E/SP integrates signal conditioning that previously required multiple op-amps and a separate MCU. The on-chip op-amps can be configured as instrumentation front-ends, while the 10-bit ADC and DAC handle linearization and 4-20 mA loop output. The SPDIP-28 package fits legacy through-hole industrial backplanes, and the extended temperature grade (-40 to +125°C) ensures operation in harsh factory environments.
Được đề xuất
General-Purpose Mixed-Signal Embedded Control
The PIC16F1778-E/SP serves as a versatile mixed-signal controller for appliance controls, smart-home sensor hubs, and IoT edge nodes where deterministic real-time response, low power, and rich analog integration matter more than raw CPU speed. Its EUSART, SPI and I²C (MSSP) peripherals bridge to radios and sensors, while PPS enables pin reuse across PCB revisions without MCU changes. Compared with Cortex-M0+ parts in the same price band, this PIC16 offers more integrated analog and PWM channels at lower power consumption.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F1778-E/SP — 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 | PIC16F1778-I/SP | PIC16F1776-E/SP | PIC16F1773-E/SP | PIC16F15354-E/SP | PIC16F1718-I/SP |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SPDIP-28 | SPDIP-28 (same) | SPDIP-28 (same) | SPDIP-28 (same) | SPDIP-28 (same) | SPDIP-28 (same) |
| Flash Memory | 28 KB | 28 KB (same) | 16 KB | 7 KB | 7 KB | 28 KB (same) |
| Data RAM | 2 KB | 2 KB (same) | 2 KB (same) | 1 KB | 1 KB | 2 KB (same) |
| Max CPU Frequency | 32 MHz | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) |
| ADC Resolution | 10-bit | 10-bit (same) | 10-bit (same) | 10-bit (same) | 10-bit (same) | 10-bit (same) |
| PWM Resolution | 10-bit and 16-bit | 10-bit and 16-bit (same) | 10-bit and 16-bit (same) | 10-bit and 16-bit (same) | 10-bit | 10-bit |
| On-chip Op-Amps | Yes (multiple) | Yes (multiple, same) | Yes (multiple) | Yes (reduced count) | No | Limited count |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V (same) | 2.3 V to 5.5 V (same) | 2.3 V to 5.5 V (same) | 2.3 V to 5.5 V (same) | 2.3 V to 5.5 V (same) |
| Temperature Grade | Extended (-40 to +125°C) | Industrial (-40 to +85°C) | Extended (-40 to +125°C, same) | Extended (-40 to +125°C, same) | Extended (-40 to +125°C, same) | Industrial (-40 to +85°C) |
| Approx. Unit Price (USD, qty 100) | 2.28 | 2.10 | 1.95 | 1.70 | 1.65 | 2.10 |
Bảo phân biệt quan trọng
- Largest flash in 28-pin SPDIP of PIC16F177x family (vsPIC16F1776-E/SP)
- Highest on-chip analog integration in PIC16F177x SPDIP-28 line (vsPIC16F1773-E/SP)
- Extended temperature range for industrial deployments (vsPIC16F1778-I/SP)
- Enhanced mid-range core with legacy compatibility (vsPIC16F15354-E/SP)
Ghi chú thiết kế
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 20) of the PIC16F1778-E/SP, plus a bulk 10 µF tantalum or ceramic on the same rail. The internal POR/BOR circuits reject brownouts down to 1.9 V (BOR trip), but stable VDD rail during ADC conversions is critical - noisy VDD injects noise into the 10-bit ADC result. For battery-powered designs, leverage the XLP sleep modes (Sleep current < 50 nA typical) and use the on-chip LFINTOSC during sleep to keep timers running.
Estimated: at 32 MHz clock, 5.5 V supply, and all peripherals active, the PIC16F1778-E/SP consumes roughly 7-10 mA (typical datasheet figure 7 mA at 32 MHz/5V). The SPDIP-28 package has θJA around 60 °C/W on a 2-layer PCB with no copper pour; at 25 °C ambient, junction temperature stays well below the 125 °C maximum. For continuous operation above 70 °C ambient, add a 1 square inch copper pour under the device to drop θJA below 50 °C/W.
The SPDIP-28 footprint allows easy rework on a 0.300 inch / 7.62 mm row spacing pad pattern. Keep the MCLR line short and decoupled to VSS with a 10 kΩ pull-up to VDD plus a 100 nF cap for noise immunity. Use a star-ground topology when routing the analog AVdd/AVss reference pins (shared with VDD/VSS on this package) and keep the analog inputs away from PWM switching traces to minimize ADC noise pickup.
When migrating from PIC16F1778 to PIC16F1776, do not assume identical peripheral availability - the PIC16F1776 has fewer op-amps and PWM channels. Always cross-check the PPS mapping because remapping the same UART RX to a different pin requires explicit PPSSEL/PSLOCK register writes. The 'E' temperature grade (-40 to +125 °C) suffix is distinct from the 'I' grade (-40 to +85 °C); for outdoor or industrial deployments always specify 'E'. When using the on-chip op-amps, configure the input pins as analog (ANSx register) or reading accuracy degrades.
For SPI communications above 4 MHz or I²C in Fast-mode Plus (1 MHz), keep traces under 50 mm and add 22-33 Ω series damping resistors near the MCU pin to suppress ringing. The EUSART TX pin can be remapped via PPS - this is useful when routing around PCB obstacles without changing MCU firmware other than PPS configuration. For PWM-critical motor-control loops, route the PWM outputs directly to gate drivers without intermediate buffers, and place the bootstrap diodes within 5 mm of the high-side gate-drive pin.
Thông tin tuân thủ
RoHS and lead-free per Microchip PIC16F1778 product page. Not AEC-Q100 qualified (industrial-grade MCU). Halogen-free per Microchip environmental compliance documentation.
