PIC16LF1778T-I/SO - 8-Bit 32MHz MCU 28KB Flash XLP | Microchip
MPN: PIC16LF1778T-I/SO ✓ פעילPIC16LF1778T-I/SO סקירה
A microcontroller (MCU) is a single-chip computer containing a CPU, program memory, RAM, EEPROM, and a rich set of peripheral interfaces such as ADC, PWM, I2C, SPI, UART, and timers. PIC16F-series MCUs occupy the mid-range 8-bit tier (PIC10/12/16/18 hierarchy), balancing low cost, low power, and wide peripheral integration; the LF sub-family emphasizes XLP™ (eXtreme Low Power) sleep currents in the nA range.
Key features include the high-performance nanoWatt XLP™ technology, four 16-bit timers, four CCP/ECCP modules, two MSSP blocks for I2C/SPI, two USART modules for asynchronous serial, two 10-bit ADC converters, two 8-bit DACs, four 5-bit DACs, four comparators, an op-amp, a 32-level deep hardware programmable CRC, and an integrated 32 MHz internal oscillator. The 28-SOIC footprint eases hand-soldering and breadboard prototyping.
The architecture combines an enhanced mid-range 8-bit core with a 14-bit instruction word, 8-level hardware stack, and optimized C-compiler support (XC8). Interrupt-driven design with vectored priorities and peripheral pin select (PPS) on compatible pins simplifies mixed-signal PCB layouts.
Typical applications include LED lighting control, switch-mode power supplies, battery charging, low-power sensor nodes, motor control (BLDC/stepper), and general-purpose embedded control in industrial and consumer products. The 28 KB Flash comfortably hosts USB-less stacks, custom protocols, and small RTOS-style supervisors.
When designing with this device, place decoupling 100 nF capacitors close to VDD/VSS pairs and follow Microchip's recommended SOIC land pattern with a 7.50 mm body width footprint (JEDEC MS-013). Configure ICSP™ programming via the standard 5-pin header for in-circuit firmware updates.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single manufacturer datasheet page, giving procurement and engineering teams one source for sourcing, validation, and BOM decisions.
חלופות תחליף ישיר עבור PIC16LF1778T-I/SO — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
PIC16LF1777-I/SO
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16LF1779-I/SO
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16LF1769-I/SO
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16LF1768-I/SO
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16LF1778-I/SO
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16LF1778-E/SO
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
PIC16LF1778T-I/SO דירוגים מרביים ומאפיינים חשמליים
| Product Family | PIC® XLP™ 16F |
| Core Architecture | 8-bit Enhanced Mid-Range (PIC16) |
| Core Size | 8-bit |
| CPU Speed (Max) | 32 MHz |
| Instruction Word | 14-bit |
| Program Memory (Flash) | 28 KB (16K x 14) |
| Data RAM | 2 KB |
| Data EEPROM | 128 bytes |
| Operating Voltage Range | 1.8 V to 3.6 V (LF variant) |
| ADC | 10-bit, 2 converters |
| DAC | 2x 8-bit, 4x 5-bit |
| Comparators | 4 |
| Op-Amps | 1 |
| Timers (16-bit) | 4 |
| CCP / ECCP Modules | 4 |
| Communication | 2x MSSP (I2C/SPI), 2x USART (EUSART), 1x LIN |
| Internal Oscillator | 32 MHz, factory calibrated (±1%) |
| טווח טמפרטורת פעולה | -40C to +85C (Industrial, 'I' suffix) |
| Package Type | 28-pin SOIC (7.50 mm body width, JEDEC MS-013) |
| סוג הרכבה | Surface Mount |
| רמת MSL | 1 (unlimited) |
| סטטוס RoHS | Compliant |
| Lead-Free | Yes |
| Packaging | Tape & Reel (T suffix) |
| Programming/Debug Interface | ICSP (In-Circuit Serial Programming™) via PGD/PGC |
תצורת פינים של PIC16LF1778T-I/SO
| פין 1 | RA3/AN3/Vref+/T1G — GPIO RA3 / ADC ch3 / positive voltage reference / Timer1 gate |
| פין 2 | RA4/AN4/T1G — GPIO RA4 / ADC ch4 / Timer1 gate (open-drain) |
| פין 3 | RA5/AN5 — GPIO RA5 / ADC ch5 |
| פין 4 | RA6/AN6 — GPIO RA6 / ADC ch6 |
| פין 5 | RA7/AN7 — GPIO RA7 / ADC ch7 |
| פין 6 | VSS — Ground reference |
| פין 7 | RA0/AN0/DAC1 — GPIO RA0 / ADC ch0 / 8-bit DAC1 output |
| פין 8 | RA1/AN1/DAC2 — GPIO RA1 / ADC ch1 / 8-bit DAC2 output |
| פין 9 | RA2/AN2 — GPIO RA2 / ADC ch2 |
| פין 10 | RC0/SOSC1 — GPIO RC0 / secondary oscillator input |
| פין 11 | RC1/SOSC2 — GPIO RC1 / secondary oscillator output |
| פין 12 | RC2/CCP1 — GPIO RC2 / CCP1 PWM output |
| פין 13 | RC3/CCP2 — GPIO RC3 / CCP2 PWM output |
| פין 14 | RC4 — GPIO RC4 |
| פין 15 | RC5 — GPIO RC5 |
| פין 16 | RC6 — GPIO RC6 |
| פין 17 | RC7 — GPIO RC7 |
| פין 18 | VSS — Ground reference |
| פין 19 | VDD — Positive supply voltage |
| פין 20 | RB0/INT — GPIO RB0 / external interrupt |
| פין 21 | RB1 — GPIO RB1 |
| פין 22 | RB2 — GPIO RB2 |
| פין 23 | RB3 — GPIO RB3 |
| פין 24 | RB4 — GPIO RB4 |
| פין 25 | RB5 — GPIO RB5 |
| פין 26 | RB6/PGC — GPIO RB6 / ICSP clock (programming/debug) |
| פין 27 | RB7/PGD — GPIO RB7 / ICSP data (programming/debug) |
| פין 28 | VSS — Ground reference |
יישומים טיפוסיים
PIC16LF1778T-I/SO מתאים עבור 6 יישוםs: Multi-Channel LED Lighting Driver, Switch-Mode Power Supply (SMPS) Controller, Battery Charging & Power Management, Brushless DC (BLDC) Motor Control, Low-Power Wireless Sensor Node, Industrial Control & HMI Front-End.
Multi-Channel LED Lighting Driver
The PIC16LF1778T-I/SO is ideal for multi-channel LED lighting because it integrates 4 CCP/ECCP modules delivering up to 16 PWM outputs, 2x 8-bit DACs, 4x 5-bit DACs, and 4 high-speed comparators on-chip. Per Microchip app note AN1628, this combination drives constant-current LED strings with smooth 16-bit dimming resolution while keeping BOM cost low. The XLP 1.8V-3.6V core enables battery-powered architectural and decorative lighting where total quiescent draw is critical. Place the MCU between a 3.3V LDO and the LED driver MOSFETs; the 32 MHz internal oscillator eliminates external crystals and reduces PCB area. With 28 KB Flash the device hosts DMX512, DALI, or custom BLE-via-UART bridges.
מומלץ
Switch-Mode Power Supply (SMPS) Controller
The PIC16LF1778T-I/SO serves as a digital SMPS controller thanks to its 10-bit ADC with up to 20 channels, dual 8-bit DACs for compensation networks, four high-speed comparators, and four 16-bit timers for precise PWM switching. The on-chip op-amp enables current-mode feedback without external components. Per Microchip AN1332, the high-resolution PWM and ADC combination supports digitally-controlled buck, boost, and PFC topologies. Designers run the firmware at 32 MHz to keep control-loop latency under 5 microseconds. The 28-SOIC package handles modest power dissipation; add 1 sq inch of copper pour to keep junction temperature below 85C in enclosed adapters.
מומלץ
Battery Charging & Power Management
The PIC16LF1778T-I/SO suits multi-chemistry battery chargers with its nanoWatt XLP™ deep-sleep currents under 50 nA and wide 1.8V-3.6V operating range. The two 10-bit ADC converters monitor voltage and current simultaneously, while four comparators provide safety cutoffs. According to Microchip AN1138, the device implements CC/CV charging profiles for Li-Ion, LiFePO4, and lead-acid chemistries within 28 KB of Flash. The LF process technology and low-power brown-out reset enable continuous 'always-on' standby for IoT and wearables. Tape-and-reel packaging supports high-volume assembly in consumer power banks.
מומלץ
Brushless DC (BLDC) Motor Control
For sensorless or sensored BLDC motor control, the PIC16LF1778T-I/SO delivers four 16-bit timers, four CCP/ECCP channels, and four comparators that synchronize commutation and back-EMF detection. Microchip's AN1160 demonstrates six-step and FOC algorithms running on PIC16F177X devices in 28-SOIC. The 32 MHz MIPS core executes sensorless startup ramps within 1 ms, while 2 KB RAM keeps recent sample history for RPM estimation. Industrial-grade -40C to +85C operation tolerates motor bay environments, and the 28-SOIC footprint fits compact fan, pump, and small-appliance drive boards.
מומלץ
Low-Power Wireless Sensor Node
The PIC16LF1778T-I/SO functions as the host MCU in battery-powered sensor nodes thanks to its nanoWatt XLP™ technology with sleep currents in the tens of nanoamps range. The two MSSP blocks drive SPI sensors and I2C peripherals simultaneously, while the USART links to a sub-GHz or BLE module. Per Microchip AN1415, this MCU coordinates wake-up timing, sensor sampling, and RF transmission with average draws under 5 microamps. With 28 KB Flash the firmware can implement custom MAC layers and on-node edge processing before uplink. The industrial temperature range suits outdoor IoT deployments.
מומלץ
Industrial Control & HMI Front-End
The PIC16LF1778T-I/SO powers industrial control panels with its 2x 10-bit ADC for analog inputs, 4 CCP channels for keypad scanning, and USART for Modbus RTU links. The 28 KB Flash hosts multi-language HMI logic and EEPROM stores calibration data. Per Microchip AN1229, the wide -40C to +85C industrial range supports factory floor conditions. Four comparators handle sensor thresholding and emergency-stop hardware interlocks. The 28-SOIC footprint is breadboard-friendly for prototyping and reflow-compatible for production. Designers appreciate the C-friendly XC8 toolchain for rapid porting of legacy PIC codebases.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC16LF1778T-I/SO — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC16LF1777-I/SO | PIC16LF1779-I/SO | PIC16LF1769-I/SO | PIC16LF1768-I/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Core Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Flash Memory | 28 KB | 14 KB | 32 KB | 8 KB | 8 KB |
| RAM | 2 KB | 1 KB | 2 KB | 1 KB | 1 KB |
| EEPROM | 128 bytes | 256 bytes | 128 bytes | 128 bytes | 128 bytes |
| Operating Voltage | 1.8V - 3.6V | 1.8V - 3.6V | 1.8V - 3.6V | 1.8V - 3.6V | 1.8V - 3.6V |
| ADC | 2x 10-bit | 2x 10-bit | 2x 10-bit | 8-bit | 8-bit |
| Op-Amps / Comparators | 1 op-amp / 4 comparators | 1 op-amp / 4 comparators | 1 op-amp / 4 comparators | 2 op-amps / 2 comparators | 0 op-amps / 2 comparators |
| CCP / ECCP Modules | 4 | 4 | 4 | 2 | 2 |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
מבדילים עיקריים
- On-chip op-amp and 4 high-speed comparators (לעומתPIC16LF1768-I/SO)
- Dual 10-bit ADC + dual 8-bit DAC + 4x 5-bit DAC (לעומתPIC16LF1769-I/SO)
- 2 KB RAM with 28 KB Flash and 4 CCP/ECCP modules (לעומתPIC16LF1777-I/SO)
הערות תכנון
Place a 100 nF decoupling capacitor as close as possible to each VDD/VSS pair (pins 19 and 6/18/28 on the 28-SOIC). Add a bulk 10 uF tantalum or ceramic on the main supply rail. Follow JEDEC MS-013 SOIC land pattern with the 7.50 mm body width; the pin-1 marker is the dot at top-left when orienting the IC. For production, use Microchip's ICD3 or PICKit4 footprint recommendations for the ICSP header (PGC=RB6, PGD=RB7).
The LF variant operates from 1.8V to 3.6V. Below 2.5V the maximum CPU frequency is reduced - consult the datasheet electrical characteristics table for the Fosc/Vdd curve. Brown-out reset (BOR) should be enabled in configuration words to prevent Flash corruption during supply dips. For battery applications, verify that sleep currents stay in the nanoWatt XLP range by disabling unused peripherals via the PMD registers before entering SLEEP.
Do not assume all 28-SOIC PIC16 variants share the same pinout - the PIC16LF177X and PIC16LF176X families both use 28-SOIC but pin assignments for oscillator (RA6/RA7) and ADC channels differ. Always cross-reference the specific device's pinout in the datasheet before PCB layout. Also note that the 'T' suffix denotes tape-and-reel packaging, not a temperature grade - the 'I' suffix is the industrial -40C to +85C grade, distinct from 'E' (extended -40C to +125C).
Route the ICSP lines (PGC=RB6, PGD=RB7) as short as possible with 100-ohm series termination if the cable to the programmer exceeds 100 mm. Keep analog inputs (AN0-AN7) away from PWM outputs and switching nodes to minimize coupling. Use a ground pour under the IC and stitch vias at 5 mm intervals to maintain a low-impedance return path for the 32 MHz core. Reference Microchip AN1415 PCB layout guidelines for sensor-node applications.
מידע על תאימות
RoHS and lead-free status confirmed by Microchip product page and DigiKey listing. AEC-Q100 automotive qualification not applicable - the 'I' suffix denotes industrial temperature range (-40C to +85C), not automotive grade. For automotive designs use AEC-Q100-qualified variants such as PIC16F1778-E/SO or consult Microchip automotive portfolio.
