PIC16F1778-I/SS - 8-bit MCU 28KB Flash 2KB RAM 28-SSOP | Microchip
部品番号: PIC16F1778-I/SS ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $2.8 | $2.80 |
| 10 | $2.52 | $25.20 |
| 100 | $2.24 | $224.00 |
| 500 | $1.96 | $980.00 |
| 1,000 | $1.75 | $1,750.00 |
PIC16F1778-I/SS 概要
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (Flash for program storage and SRAM for data), and programmable peripheral interfaces into one package. The 8-bit class is the simplest, lowest-cost, and lowest-power tier of MCUs, well suited to deterministic real-time control loops. PIC16F1xxx parts sit in Microchip's enhanced mid-range (XLP™) family with the MIPS-based Harvard architecture, placing them above basic PIC10/12/14 devices in peripheral richness while staying far below 32-bit Cortex-M parts in price and complexity.
Key features of the PIC16F1778 include four 10-bit ADC modules with up to 28 analog channels, two 10-bit DACs, four 8-bit DACs, four operational amplifiers, three comparators, a 16-bit PWM with four outputs, complementary waveform generators, and a 32 MHz internal oscillator with ±1 % accuracy. The 28-SSOP package offers a low-profile surface-mount footprint well suited to compact LED-driver, sensor-hub, and appliance control boards. The 'XLP' (eXtreme Low Power) technology provides sleep currents below 50 nA, allowing battery-powered designs to run for years on a single cell.
Typical applications include LED lighting drivers, primary- or secondary-side SMPS control, BLDC and stepper motor control, battery charging, and general-purpose analog/mixed-signal systems. Designers choose this part when they need rich on-chip analog integration without the cost or complexity of a 32-bit MCU.
ドロップイン代替品: PIC16F1778-I/SS — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: PIC16F1778-I/SS （同一形状・フットプリント） — 相違点: ADC, Package, Program Memory (Flash), Core Architecture, Comparators.
クイック比較ツール — 並列比較する代替部品を選択:
PIC16F1776-I/SS
✅ ドロップイン✓ 在庫あり
$2.04 / 個
データシートを見る →PIC16F1769-I/SS
✅ ドロップイン✓ 在庫あり
$1.55 / 個
データシートを見る →PIC16F1708-I/SS
✅ ドロップイン✓ 在庫あり
$1.39 / 個
データシートを見る →PIC16F1713-I/SS
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PIC16F15344-I/SS
✅ ドロップイン✓ 在庫あり
$0.79 / 個
データシートを見る →PIC16F1518-I/SS
✅ ドロップイン✓ 在庫あり
$1.2 / 個
データシートを見る →PIC16F1778-I/SS 最大定格＆電気的特性
| Core Architecture | PIC16 (8-bit enhanced mid-range, Harvard) |
| Family | PIC® XLP™ 16F1xxx |
| Program Memory (Flash) | 28 KB |
| RAM | 2 KB |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V |
| I/O Pins | 25 (28-pin package) |
| ADC | 4 x 10-bit, up to 28 channels |
| DAC | 2 x 10-bit + 4 x 8-bit |
| Op Amps | 4 on-chip |
| Comparators | 3 |
| PWM Channels | 16-bit, 4 outputs (with complementary) |
| パッケージ | 28-pin SSOP (5.30 mm body) |
| Temperature Grade (I) | -40 °C to +85 °C (industrial) |
| RoHS ステータス | Compliant |
PIC16F1778-I/SS ピン構成
| ピン 1 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| ピン 2 | RA3/AN3/Vref+ — Port A bit 3 / Analog input 3 / Positive reference voltage |
| ピン 3 | RA4/T0CKI/AN4 — Port A bit 4 / Timer0 clock input / Analog input 4 |
| ピン 4 | RA5/AN5 — Port A bit 5 / Analog input 5 |
| ピン 5 | VDD — Positive supply voltage |
| ピン 6 | VSS — Ground reference |
| ピン 7 | RA6/AN6/OSC2/CLKOUT — Port A bit 6 / Analog input 6 / Oscillator output / Clock out |
| ピン 8 | RA7/AN7/OSC1/CLKIN — Port A bit 7 / Analog input 7 / Oscillator input / Clock in |
| ピン 9 | RB0/AN8 — Port B bit 0 / Analog input 8 |
| ピン 10 | RB1/AN10 — Port B bit 1 / Analog input 10 |
| ピン 11 | RB2/AN8 — Port B bit 2 / Analog input 8 (alt) |
| ピン 12 | RB3/AN9 — Port B bit 3 / Analog input 9 |
| ピン 13 | RB4/AN11 — Port B bit 4 / Analog input 11 |
| ピン 14 | RB5/AN13 — Port B bit 5 / Analog input 13 |
| ピン 15 | RB6/ICSPCLK — Port B bit 6 / In-circuit serial programming clock |
| ピン 17 | RB7/ICSPDAT — Port B bit 7 / In-circuit serial programming data |
| ピン 18 | RC0 — Port C bit 0 |
| ピン 19 | RC1 — Port C bit 1 |
| ピン 20 | RC2 — Port C bit 2 |
| ピン 21 | RC3 — Port C bit 3 |
| ピン 22 | RC4 — Port C bit 4 |
| ピン 23 | RC5 — Port C bit 5 |
| ピン 24 | RC6 — Port C bit 6 |
| ピン 25 | RC7 — Port C bit 7 |
| ピン 26 | RE3/MCLR — Reset / Master Clear (active low) |
| ピン 27 | VDD — Positive supply voltage (alt pin) |
| ピン 28 | VSS — Ground reference (alt pin) |
主な用途
PIC16F1778-I/SS の用途: 7 件s: LED Lighting and Color-Mixing Drivers, Switch-Mode Power Supply (SMPS) Control, BLDC and Stepper Motor Control, Battery Charging and Battery Management, Industrial Sensor Hubs and IoT Edge Nodes, Consumer Appliance Control Boards, Power Conversion and Digital Power Loops.
LED Lighting and Color-Mixing Drivers
The PIC16F1778-I/SS is purpose-built for LED-lighting applications, integrating four 10-bit ADC modules, two 10-bit DACs, four 8-bit DACs, and four op-amps on a single die. Its four 8-bit DACs can drive individual LED-channel current references in RGBW or tunable-white luminaires with up to 28 analog inputs available on the 28-SSOP pinout. Compared with a discrete analog front-end, the on-chip DACs and op-amps eliminate several external op-amp ICs and trim pots, shrinking BOM cost and PCB area. The 16-bit complementary PWM supports high-frequency constant-current buck/boost LED-driver stages without external gate-driver logic.
おすすめ
Switch-Mode Power Supply (SMPS) Control
The PIC16F1778-I/SS is well suited to primary- and secondary-side control of isolated and non-isolated SMPS topologies. Its high-speed 10-bit ADC combined with comparators and op-amps enables peak-current-mode control loops and cycle-by-cycle current limiting on a single chip. The complementary 16-bit PWM provides deterministic dead-time generation, which is essential for full-bridge, half-bridge, and active-clamp flyback topologies operating above 200 kHz. The on-chip op-amps can be used as current-sense amplifiers, replacing external current-sense ICs and reducing total solution cost in sub-100 W adapters.
おすすめ
BLDC and Stepper Motor Control
Sensorless BLDC commutation is enabled on the PIC16F1778-I/SS by its three comparators and four op-amps, which can be configured as a back-EMF zero-crossing detector network without external analog circuitry. The complementary 16-bit PWM with hardware dead-time generation drives three-phase half-bridges directly, while the 32 MHz MIPS core handles state-machine transitions and field-oriented-control math for steppers. Industrial-grade -40 °C to +85 °C operation makes it suitable for small fans, pumps, appliance compressors, and robotics actuators. For higher-power designs the firmware migrates easily to the PIC16F1779 in the 40/44-pin packages.
おすすめ
Battery Charging and Battery Management
The PIC16F1778-I/SS integrates the analog front-end needed for multi-chemistry battery chargers - four ADC modules and four op-amps combine to monitor pack voltage, cell voltage, charge current, and temperature with minimal external components. Its eXtreme Low Power (XLP) technology reduces sleep current below 50 nA, allowing long battery standby in portable and IoT applications. Closed-loop charge-termination and JEITA temperature profile handling can run entirely on-chip while the comparator-driven PWM regulates the charge current. The 1.8 V minimum operating voltage supports single-cell LiFePO4 packs that drop below 2.5 V at deep discharge.
おすすめ
Industrial Sensor Hubs and IoT Edge Nodes
Industrial sensor-hub designs leverage the PIC16F1778-I/SS's 28 analog channels to aggregate multiple 4-20 mA, 0-10 V, or thermistor inputs on a single MCU without external multiplexers. Its 32 MHz core runs protocol stacks such as Modbus RTU, IO-Link, and LIN, while the 2 KB SRAM buffers local data and the on-chip comparators provide fast over-voltage or over-current trip responses. The XLP sleep modes at sub-50 nA make it attractive for line-powered and battery-backed sensor installations. The 28-SSOP industrial temperature rating (-40 °C to +85 °C) satisfies IEC 60068-2-1 and -2-2 environmental requirements for indoor industrial cabinets.
おすすめ
Consumer Appliance Control Boards
In consumer appliances such as coffee machines, induction cooktops, washing machines, and air purifiers, the PIC16F1778-I/SS acts as the main control MCU. Its 28-SSOP low-profile footprint fits beneath I/O connectors and next to high-voltage sections, while its 5.5 V maximum operating voltage supports direct connection to a 5 V regulated rail. The on-chip op-amps and comparators handle zero-crossing detection for TRIAC-based heater or motor drivers, and the complementary PWM with dead-time drives IGBT half-bridges in small inverter stages. eXtreme Low Power (XLP) sleep modes keep standby power consumption in standby well below EU Ecodesign limits for connected appliances.
おすすめ
Power Conversion and Digital Power Loops
Digital-loop power conversion is one of the PIC16F1778-I/SS's design targets. With 32 MIPS of compute, four 10-bit ADC modules sampled near-simultaneously, and a hardware 16-bit PWM with complementary outputs and programmable dead-time, the MCU can implement average-current-mode and peak-current-mode control loops for buck, boost, SEPIC, Cuk, and PFC stages. The on-chip op-amps and comparators close the current-sense and voltage-sense feedback loops without external analog ICs, reducing BOM cost. Industrial-grade -40 °C to +85 °C operation supports telecom, industrial, and renewable-energy distributed-power applications.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: PIC16F1778-I/SS — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | PIC16F1776-I/SS | PIC16F1769-I/SS | PIC16F1708-I/SS | PIC16F1713-I/SS | PIC16F15344-I/SS | PIC16F1518-I/SS |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Flash | 28 KB | 28 KB (same) | 28 KB (same) | 16 KB (-43%) | 7 KB (-75%) | 7 KB (-75%) | 28 KB (same) |
| RAM | 2 KB | 2 KB (same) | 2 KB (same) | 1 KB (-50%) | 512 B (-75%) | 512 B (-75%) | 1 KB (-50%) |
| Max CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Op Amps (on-chip) | 4 | 4 | 3 | 0 | 2 | 2 | 0 |
| ADC Modules | 4 x 10-bit | 4 x 10-bit | 4 x 10-bit | 1 x 10-bit | 1 x 10-bit | 2 x 10-bit | 1 x 10-bit |
| XLP Sleep Current | <50 nA | <50 nA | <50 nA | <50 nA | <50 nA | <30 nA | <50 nA |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 5.5 V |
主な差別化要因
- Four integrated op-amps plus four 10-bit ADC modules on-chip （vs PIC16F1708-I/SS)
- Larger Flash and RAM than the lower-tier family members （vs PIC16F1713-I/SS)
- Industrial-grade -40 °C to +85 °C operation across the family （vs PIC16F1768-I/SS)
設計ノート
Estimated: at 32 MHz active current is approximately 130 µA/MHz × 32 MHz = 4.16 mA from a 3.3 V supply, totaling ~13.7 mW. Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD pin and a bulk 4.7 µF capacitor on the same rail. For battery-powered designs, leverage the PIC16F1778-I/SS's XLP sleep modes - sleep current drops below 50 nA, allowing a CR2032 to power periodic sensing for several years. Always tie MCLR (pin 26) to VDD through a 10 kΩ pull-up for normal operation, or leave it driven by a supervisor for reliable brown-out behavior.
The 28-SSOP has a 0.65 mm pitch and 5.30 mm body width, so routed escape between pads must use thin traces with vias in the pad or just outside. Place the decoupling capacitor within 2 mm of each VDD/VSS pin pair and route the analog AVSS/AVDD reference traces away from switching PWM lines to minimize digital-to-analog crosstalk. The exposed thermal pad is not present on the 28-SSOP, but a solid ground pour directly under the package improves thermal dissipation and reduces EMI on PWM outputs. Keep the ICSP programming lines (RB6/ICSPCLK and RB7/ICSPDAT) routed so the programming header is accessible.
Do not assume the PIC16F1778-I/SS defaults to 32 MHz on reset - the configuration words must explicitly select the HFINTOSC and set the oscillator frequency. Forgetting to configure the IRCF bits leaves the device at 500 kHz, which appears as sluggish analog sampling and missed PWM updates. Also, the analog inputs are multiplexed with digital I/O - always clear the corresponding ANSEL bit to enable analog mode, otherwise the ADC reading will be floating. Finally, the complementary PWM dead-time is in hardware but must be configured via the PWMxCON register; without proper dead-time, half-bridge drivers risk shoot-through in motor-control applications.
コンプライアンス情報
RoHS-compliant and lead-free per Microchip product page. Industrial temperature grade (-40 °C to +85 °C) suitable for indoor industrial and consumer applications; AEC-Q100 automotive variants are not applicable in the 28-SSOP package.
