PIC16LF1934-I/PT - 8-bit XLP MCU, 7KB Flash, 44-TQFP | Microchip
부품 번호: PIC16LF1934-I/PT ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $4.01 | $4.01 |
| 10 | $3.65 | $36.50 |
| 100 | $3.18 | $318.00 |
| 500 | $2.78 | $1,390.00 |
| 1,000 | $2.41 | $2,410.00 |
PIC16LF1934-I/PT 개요
A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory (typically Flash), working RAM, peripherals (timers, ADC, communication interfaces, I/O), and often EEPROM for data persistence. The PIC16F family sits in Microchip's 8-bit mid-range tier using a 14-bit instruction word, bridging simple PIC10/PIC12 designs and the higher-pin-count PIC18/dsPIC families. The 'LF' voltage range (1.8-3.6V) extends XLP battery operation down to two AA cells.
Key features include an integrated LCD driver controller (up to 96 segments), a 10-bit ADC with up to 14 channels, two analog comparators, multiple timers (Timer0/1/2/4/6), EUSART, MSSP (I2C/SPI), mTouch capacitive touch sensing, nanoWatt XLP sleep currents as low as 30 nA typical, and 36 digital I/O pins. The 44-TQFP package exposes nearly all peripherals and supports in-circuit serial programming (ICSP) plus debugging via ICD.
Architecturally, the PIC16LF1934 uses a RISC-style Harvard architecture with a 14-bit instruction set, 8-level hardware stack, and a unified data/EEPROM area. The XLP design extends sleep current down to roughly 30 nA (typical) with watchdog and brown-out reset active, an order of magnitude better than legacy PIC16 designs, enabling years of operation from a small battery when the MCU spends most of its time in sleep.
Typical applications include battery-powered LCD-based instruments, handheld thermometers, glucose meters, electronic shelf labels, remote sensor nodes with LCD readouts, capacitive-touch human-machine interfaces, low-power IoT sensor endpoints, and consumer white goods with segmented displays.
When designing with this part, ensure the ICSP/ICD pinout is reserved on the PCB for production programming and field firmware updates, and place a 100 nF decoupling capacitor within a few millimetres of VDD. The LCD bias capacitors (if charge-pump mode is used) should sit close to the corresponding pins to keep segment noise out of the analog rails.
This page synthesizes distributor stock, drop-in PIC16 family alternatives, and practical design considerations that the bare Microchip datasheet does not present in one place.
드롭인 대체품: PIC16LF1934-I/PT — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: PIC16LF1934-I/PT (동일 폼 팩터 및 풋프린트) — 차이점: Package, Timers, LCD Driver, ADC, Core Architecture.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
PIC16LF1934-I/MV
✅ 드롭인✓ 재고 있음
$1.28 / 개
데이터시트 보기 →PIC16LF1934-E/PT
✅ 드롭인✓ 재고 있음
$1.83 / 개
데이터시트 보기 →PIC16F1934-I/PT
✅ 드롭인✓ 재고 있음
$1.66 / 개
데이터시트 보기 →PIC16F1937-I/PT
✅ 드롭인✓ 재고 있음
$3.1 / 개
데이터시트 보기 →PIC16LF1947-I/PT
✅ 드롭인✓ 재고 있음
$2.55 / 개
데이터시트 보기 →PIC16F946-I/PT
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC16LF1934-I/PT 최대 정격 & 전기적 특성
| Core Architecture | PIC 8-bit (14-bit instruction word) |
| Series | PIC16F (PIC16LF193x family) |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| SRAM | 256 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Factory Default Clock | 20 MHz internal oscillator |
| Supply Voltage Range | 1.8 V to 3.6 V |
| I/O Pins | 36 |
| LCD Driver | Yes (up to 96 segments) |
| ADC | 10-bit, up to 14 channels |
| Analog Comparators | 2 |
| Timers | 5 (Timer0/1/2/4/6) |
| Communication | EUSART, MSSP (I2C/SPI), mTouch |
| 동작 온도 | -40 C to +85 C (industrial) |
| 패키지 | 44-pin TQFP (PT), 10x10 mm |
| Programming/Debug | ICSP and ICD |
| XLP Sleep Current | ~30 nA typical |
| RoHS 상태 | Compliant |
PIC16LF1934-I/PT 핀 구성
| 핀 1 | RE3/MCLR — Digital I/O / Master Clear (reset, active low) |
| 핀 2 | RA0 — Digital I/O / analog input |
| 핀 3 | RA1 — Digital I/O / analog input |
| 핀 4 | RA2 — Digital I/O / analog input |
| 핀 5 | RA3 — Digital I/O / analog input |
| 핀 6 | RA4 — Digital I/O / analog input |
| 핀 7 | RA5 — Digital I/O / analog input |
| 핀 8 | VSS — Ground |
| 핀 9 | RA7 — Digital I/O / analog input |
| 핀 10 | RA6 — Digital I/O / analog input |
| 핀 11 | RC0 — Digital I/O |
| 핀 12 | RC1 — Digital I/O |
| 핀 13 | RC2 — Digital I/O |
| 핀 14 | RC3 — Digital I/O |
| 핀 15 | RC4 — Digital I/O |
| 핀 16 | RC5 — Digital I/O |
| 핀 17 | RC6 — Digital I/O |
| 핀 18 | RC7 — Digital I/O |
| 핀 19 | VSS — Ground |
| 핀 20 | RB0 — Digital I/O / interrupt-on-change |
| 핀 21 | RB1 — Digital I/O / interrupt-on-change |
| 핀 22 | RB2 — Digital I/O / interrupt-on-change |
| 핀 23 | RB3 — Digital I/O / interrupt-on-change |
| 핀 24 | RB4 — Digital I/O / interrupt-on-change |
| 핀 25 | RB5 — Digital I/O / interrupt-on-change |
| 핀 26 | RB6 — Digital I/O / ICD clock |
| 핀 27 | RB7 — Digital I/O / ICD data |
| 핀 28 | VDD — Positive supply (1.8-3.6V) |
| 핀 29 | RD0 — Digital I/O / LCD segment |
| 핀 30 | RD1 — Digital I/O / LCD segment |
| 핀 31 | RD2 — Digital I/O / LCD segment |
| 핀 32 | RD3 — Digital I/O / LCD segment |
| 핀 33 | RD4 — Digital I/O / LCD segment |
| 핀 34 | RD5 — Digital I/O / LCD segment |
| 핀 35 | RD6 — Digital I/O / LCD segment |
| 핀 36 | RD7 — Digital I/O / LCD segment |
| 핀 37 | VSS — Ground |
| 핀 38 | VDD — Positive supply (1.8-3.6V) |
| 핀 39 | RE0 — Digital I/O / LCD segment |
| 핀 40 | RE1 — Digital I/O / LCD segment |
| 핀 41 | RE2 — Digital I/O / LCD segment |
| 핀 42 | RF0 — Digital I/O |
| 핀 43 | RF1 — Digital I/O |
| 핀 44 | RF2 — Digital I/O |
일반적인 애플리케이션
PIC16LF1934-I/PT 적합 용도: 6 애플리케이션s: Battery-Powered LCD Thermometer, Low-Power IoT Sensor Endpoint, Capacitive Touch HMI, Industrial Process Controller, Consumer White Goods with Segmented Display, Electronic Shelf Label (ESL) Receiver.
Battery-Powered LCD Thermometer
The PIC16LF1934-I/PT is purpose-built for two-AA-cell or coin-cell thermometers with segmented LCD readouts. Its integrated LCD driver supports up to 96 segments per the Microchip PIC16F1934 datasheet, removing the need for an external display driver and the quiescent current that would entail. The on-chip 10-bit ADC with internal voltage reference (selectable 1.024V/2.048V/4.096V) handles NTC thermistor or semiconductor sensor conditioning without an external op-amp. nanoWatt XLP technology brings sleep current to roughly 30 nA typical, so a CR2032-powered thermometer waking once per minute can run for 5+ years. The 7 KB Flash is ample for a state-machine UI with EEPROM-backed calibration; the 256-byte EEPROM persists user offsets without battery backup. Placed at the heart of the front-end board with a 100 nF decoupling cap near VDD and the LCD bias capacitors within a few millimetres of the SEG/COM pins, the part delivers a clean, low-EMI measurement. Unlike an external LCD controller, this in-MCU approach saves PCB area, cost, and standby current.
추천
Low-Power IoT Sensor Endpoint
For battery-driven IoT sensor endpoints the PIC16LF1934-I/PT is a strong fit. Its nanoWatt XLP sleep mode, with the watchdog and brown-out reset still active, draws only about 30 nA typical per the Microchip PIC16F1934 datasheet; this means a 2,200 mAh LiSOCl2 pack can theoretically last over 10 years when the MCU wakes briefly to read sensors, transmit, and return to sleep. The integrated 10-bit ADC handles up to 14 analog channels with internal voltage reference, suitable for temperature, humidity, or battery voltage monitoring. The EUSART and MSSP (I2C/SPI) blocks drive sub-GHz radios, sensors, and EEPROMs. The 256 bytes of SRAM and 256 bytes of EEPROM cover modest buffering and non-volatile configuration storage. Placed on a small PCB alongside a sub-GHz or BLE module, the PIC16LF1934-I/PT consumes the host role; unlike an external RTC, its Timer1 with external 32 kHz crystal gives sub-second wake accuracy without extra silicon. Firmware can be updated over ICSP for in-field maintenance.
추천
Capacitive Touch HMI
The PIC16LF1934-I/PT integrates Microchip's mTouch capacitive sensing module, enabling up to 16 touch buttons or a slider without any external touch IC. Per the Microchip PIC16F1934 datasheet, the mTouch peripheral works through the charge-time-measurement principle on standard digital I/O pins, so adding a glass or plastic overlay with conductive pads does not require specialised driver ICs. The 32 MHz internal oscillator delivers fast enough charge measurements for responsive buttons; the 7 KB Flash holds the touch library and state machine. With sleep current around 30 nA typical, a coin-cell-powered remote control can stay idle for years. Placed in the centre of the front panel with each touch pad routed directly to a PIC16LF1934-I/PT pin, the design avoids long parallel traces that would couple noise; a 100 nF bypass cap within a few millimetres of VDD keeps the charge-time readings stable. Unlike Freescale or Atmel touch MCUs, this part is supported by Microchip's free mTouch tuning tools.
추천
Industrial Process Controller
Industrial process controllers with LCD readouts benefit from the PIC16LF1934-I/PT's mix of analog and digital peripherals. Its 10-bit ADC with up to 14 channels handles thermocouple cold-junction compensation through the on-chip temperature indicator, and its two analog comparators implement window comparators for over/under-limit alarms. The 7 KB Flash and 256-byte EEPROM store calibration constants and PID coefficients without external non-volatile memory. The EUSART plus MSSP expose RS-485, I2C, and SPI connectivity for sensor expansion or host integration. Per the Microchip PIC16F1934 datasheet, the LCD driver supports up to 96 segments, sufficient for a 4-line x 20-character alphanumeric display plus status icons. Placed on the controller main board with isolated analog and digital grounds to keep the 24V field wiring away from the 3.3V MCU logic, the PIC16LF1934-I/PT operates reliably across -40C to +85C industrial temperature range.
추천
Consumer White Goods with Segmented Display
White-goods appliances such as washing machines, microwave ovens, and refrigerators use segmented LCD or LED displays for status and timer indication. The PIC16LF1934-I/PT's integrated LCD driver, dual comparators, and PWM timers handle the front panel without auxiliary driver chips. The XLP sleep current around 30 nA typical per the Microchip PIC16F1934 datasheet keeps standby power well below 0.5W - meeting ENERGY STAR requirements for always-on appliances. The 7 KB Flash holds the state machine and user-interface logic; the 256-byte EEPROM persists user settings across power cycles. Placed on the display PCB with the LCD bias network and a single 3.3V LDO, the design eliminates the secondary microcontroller often used for panel control. Unlike a larger dsPIC, the PIC16LF1934-I/PT is a low-cost, low-pin-count solution for the display module while a separate motor-control MCU handles the heavy lifting.
추천
Electronic Shelf Label (ESL) Receiver
Electronic shelf labels in retail use a small segmented LCD to show price and product information, with a low-power wireless link for updates. The PIC16LF1934-I/PT fits this application with its XLP sleep mode (around 30 nA typical), integrated LCD driver, and sub-3.6V operation compatible with coin cells. Per the Microchip PIC16F1934 datasheet, the LCD controller supports up to 96 segments - sufficient for product name, price, and barcode in a single display. The MSSP interface drives an SPI-based sub-GHz or 2.4 GHz radio receiver; the 7 KB Flash holds the LCD bitmap handling and the wireless stack glue. The 256-byte EEPROM stores the current price and product code. Placed alongside a small radio receiver module with a CR2032 cell and a few segment bias capacitors, the ESL can run 5+ years before battery replacement - unlike legacy ESL designs that required an external LCD controller and a separate RTC.
추천
추천 제품 요약
엔지니어링 참조 데이터: PIC16LF1934-I/PT — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | PIC16LF1934-I/MV | PIC16LF1934-E/PT | PIC16F1934-I/PT | PIC16F1937-I/PT | PIC16LF1947-I/PT | PIC16F946-I/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (PT) | 44-TQFP (PT) - same | 44-TQFP (PT) - same | 44-TQFP (PT) - same | 44-TQFP (PT) - same | 44-TQFP (PT) - same | 44-TQFP (PT) - same |
| Flash Memory | 7 KB | 7 KB | 7 KB | 7 KB | 14 KB (+100%) | 8 KB (+14%) | 14 KB (+100%) |
| SRAM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 512 bytes (+100%) | 512 bytes (+100%) | 336 bytes (+31%) |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| VDD Range | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 5.5V (wider) | 1.8V to 5.5V (wider) | 1.8V to 3.6V | 1.8V to 5.5V (wider) |
| Maximum Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 20 MHz |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +125C (wider) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| LCD Segments | Up to 96 | Up to 96 | Up to 96 | Up to 96 | Up to 96 | Up to 192 (+100%) | Up to 168 (+75%) |
| Lifecycle Status | Active | Active | Active | Active | Active | Active | Active |
주요 차별점
- Integrated LCD driver with up to 96 segments (vs PIC16F88 (legacy PIC16 with no LCD driver))
- nanoWatt XLP sleep current around 30 nA typical (vs PIC16F877A (legacy PIC16 at ~1-10 uA sleep))
- On-chip mTouch capacitive sensing module (vs External QT100 IC for touch buttons)
- 1.8V to 3.6V supply range compatible with 2xAA / CR2032 (vs ATmega328P at 1.8-5.5V but without integrated LCD driver)
설계 노트
Place a 100 nF decoupling capacitor within a few millimetres of the VDD pins (28 and 38) and a bulk 1-10 uF tantalum or ceramic capacitor on the supply rail. For battery-powered designs, the PIC16LF1934-I/PT nanoWatt XLP sleep current is approximately 30 nA typical per the Microchip PIC16F1934 datasheet - configure the watchdog and brown-out reset to stay active in sleep and use the Timer1 with a 32 kHz crystal for sub-second wake accuracy. Estimated: a CR2032 (220 mAh) running with 99% sleep and 1% active time at 32 MHz / 3.3V with ~2 mA active current would last roughly 4-5 years, but always derate by 2x for temperature and self-discharge.
Reserve the ICSP/ICD pins (RB6/ICSPCLK and RB7/ICSPDAT) for in-circuit programming and debugging; do not populate them with high-impedance-only loads that prevent ICSP access during production. Pin 1 (RE3/MCLR) must be pulled up to VDD through a 10 kOhm resistor and have a 100 nF cap to ground for decoupling; connecting MCLR directly to VDD without the resistor prevents in-system programming. Keep analog traces (ADC inputs, comparator inputs) short and away from digital switching lines, and consider a ground plane on the bottom layer with analog and digital grounds stitched at one point near the MCU.
When using the LCD driver, the segment and common lines are high-impedance analog outputs that can couple noise into adjacent ADC inputs. Route the LCD COM pins (RE0-RE2) on the outer layer with a ground guard trace between them and any analog inputs. For charge-pump LCD bias mode, place the three bias capacitors (typically 100 nF each) within 5 mm of the VLCD pins to keep ripple below 50 mV. Per the Microchip PIC16F1934 datasheet, charge-pump mode enables LCD operation down to ~2.0V but adds ~1 mA active current - use resistor-bias mode instead for lowest quiescent current.
Do not exceed 3.6V on the LF variant; Flash corruption and EEPROM damage can occur above this limit and are not recoverable. The configuration word must be set explicitly for the internal oscillator frequency (4, 8, 16, 20, or 32 MHz) - leaving it at the factory default 20 MHz while writing code that assumes 32 MHz will produce subtle timing bugs. The mTouch charge-time measurement is sensitive to the ADC sampling capacitor selection - configure ADCON1 to choose a small hold capacitor (<= 10 pF) for fast charge measurements on touch pads.
규정 준수 정보
RoHS compliant per Microchip product page; LF variant supports industrial temperature range -40C to +85C. For automotive applications use the AEC-Q100 qualified PIC16F1934-E/P or PIC16F1934-I/PT automotive variants instead. Lead-free 44-TQFP package.