PIC16LF1933T-I/SS - 8-bit 32MHz 7KB Flash MCU w/ LCD & XLP | Microchip
MPN: PIC16LF1933T-I/SS ✓ Hoạt độngPIC16LF1933T-I/SS Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and a rich set of digital and analog peripherals around a shared internal bus. In a typical embedded system, the MCU sits below the application software, the power management IC and the user-interface block, and is responsible for sampling inputs, running control algorithms, and driving outputs. The PIC16LF1933 belongs to Microchip's enhanced mid-range 8-bit PIC16 family, which adds a 16-bit instruction set and a deeper hardware stack to the classic baseline PIC16 architecture while retaining instruction-level compatibility with older PIC16F parts.
Key features include 18 enhanced I/O pins, a 10-bit ADC with up to 11 channels, two comparators, a Capture/Compare/PWM (CCP) module, an Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART), SPI and I2C peripherals, and a charge-time-measurement unit (CTMU) for capacitive touch and general-purpose timing. The integrated LCD driver can directly drive up to 96 segments (4 commons x 24 segments) in the 28-pin configuration, eliminating an external LCD controller and reducing BOM cost. nanoWatt XLP technology keeps the typical sleep current below 50 nA with the LCD and Real-Time Clock active, enabling years of battery life on coin cells.
Typical applications include battery-powered utility meters, electronic shelf labels, home-automation sensor nodes, white-goods front panels, industrial keypads/HMIs, and portable medical monitoring devices. The wide Vdd range and on-chip temperature indicator also make it suitable for outdoor or sealed-enclosure designs. When designing with this part, leave one dedicated ground pin near the analog AVdd/DVdd pair and follow Microchip's recommended decoupling scheme (100nF + optional 10uF bulk) to keep ADC and LCD references stable. This page synthesizes distributor pricing, verified drop-in alternatives from the Microchip PIC16LF193x family, and practical design notes beyond the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16LF1933T-I/SS — 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 PIC16LF1933T-I/SS (cùng hình factor và footprint) — khác nhau ở Package, I/O Pins, LCD Driver, ADC, Core.
PIC16LF1933-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1933T-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1933T-I/MV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1933-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1933-I/MV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1933T-I/SS Tỷ lệ tối đa & tính chất điện
| Core | PIC16 8-bit enhanced mid-range |
| CPU Architecture | 8-bit RISC |
| Maximum CPU Frequency | 32 MHz |
| Program Memory (Flash) | 7 KB (4K x 14) |
| Data RAM | 256 bytes |
| Data EEPROM | 256 bytes |
| Supply Voltage (Vdd) | 1.8 V to 3.6 V |
| I/O Pins | 18 |
| ADC | 10-bit, up to 11 channels |
| Comparators | 2 |
| Timers | Timer0, Timer1, Timer2 |
| CCP Modules | 2 (Capture/Compare/PWM) |
| EUSART | Yes |
| SPI / I2C | Yes (Master I2C, MSSP) |
| LCD Driver | Up to 96 segments (4x24) |
| CTMU | Yes (charge-time measurement unit) |
| Hộp | 28-pin SSOP (5.30 mm body) |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Low-Power Technology | nanoWatt XLP |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 1 (unlimited) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16LF1933T-I/SS
| Chân 1 | RA0/AN0/CPS0/C1IN+/SEG12 — Bidirectional I/O / analog input / cap-touch / comparator / LCD segment |
| Chân 2 | RA1/AN1/CPS1/C1IN-/SEG7 — Bidirectional I/O / analog input / cap-touch / comparator / LCD segment |
| Chân 3 | RA2/AN2/CPS2/C1OUT/SRPR/Vref-/SEG6 — Bidirectional I/O / analog input / cap-touch / comparator / LCD segment |
| Chân 4 | RA3/AN3/CPS3/C1IN+/SEG5 — Bidirectional I/O / analog input / cap-touch / comparator / LCD segment |
| Chân 5 | RA4/AN4/CPS4/C2OUT/T0CKI/SEG4 — Bidirectional I/O / analog input / cap-touch / Timer0 clock / LCD segment |
| Chân 6 | RA5/AN5/CPS5/SEG3 — Bidirectional I/O / analog input / cap-touch / LCD segment |
| Chân 7 | RA6/OSC1/CLKIN — Bidirectional I/O / oscillator input |
| Chân 8 | RA7/OSC2/CLKOUT — Bidirectional I/O / oscillator output |
| Chân 9 | Vss — Ground reference |
| Chân 10 | Vdd — Positive supply (1.8V-3.6V) |
| Chân 11 | RC0/T1OSO/T1CKI — Bidirectional I/O / Timer1 oscillator / Timer1 clock |
| Chân 12 | RC1/T1OSI/CCP2 — Bidirectional I/O / Timer1 oscillator / CCP2 |
| Chân 13 | RC2/CCP1 — Bidirectional I/O / CCP1 PWM |
| Chân 14 | RC3/SEG15 — Bidirectional I/O / LCD segment |
| Chân 15 | RC4/SDA/SDI/SEG14 — Bidirectional I/O / I2C data / SPI data / LCD segment |
| Chân 16 | RC5/SCL/SCK/SEG13 — Bidirectional I/O / I2C clock / SPI clock / LCD segment |
| Chân 17 | RC6/AN11/CPS11/TX/CK/SEG26 — Bidirectional I/O / analog input / cap-touch / EUSART TX/CK / LCD segment |
| Chân 18 | RC7/AN10/CPS10/RX/DT/SEG27 — Bidirectional I/O / analog input / cap-touch / EUSART RX/DT / LCD segment |
| Chân 19 | RB0/AN12/CPS12/CCP4/SRI/SEG0 — Bidirectional I/O / analog input / cap-touch / CCP4 / LCD segment |
| Chân 20 | Vss — Ground reference |
| Chân 21 | RB1/AN10/CPS10/P1C/SEG1 — Bidirectional I/O / analog input / cap-touch / PWM / LCD segment |
| Chân 22 | RB2/AN9/CPS9/P1B/SEG2 — Bidirectional I/O / analog input / cap-touch / PWM / LCD segment |
| Chân 23 | RB3/AN8/CPS8/CCP2/P1A/SEG8 — Bidirectional I/O / analog input / cap-touch / CCP2 / PWM / LCD segment |
| Chân 24 | RB4/AN11/CPS11/COM0 — Bidirectional I/O / analog input / cap-touch / LCD common 0 |
| Chân 25 | RB5/AN7/CPS7/COM1 — Bidirectional I/O / analog input / cap-touch / LCD common 1 |
| Chân 26 | RB6/ICSPCLK/ICDCLK/SEG9 — Bidirectional I/O / ICD clock / LCD segment |
| Chân 27 | RB7/ICSPDAT/ICDDAT/SEG10 — Bidirectional I/O / ICD data / LCD segment |
| Chân 28 | RB8/SEG11 — Bidirectional I/O / LCD segment |
Ứng dụng tiêu biểu
PIC16LF1933T-I/SS phù hợp cho 7 Áp dụngs: Battery-Powered Utility Meter, Electronic Shelf Label, Home-Automation Sensor Node, White-Goods Front Panel, Industrial Keypad / HMI, Portable Medical Monitoring Device, IoT Segment-LCD Display Module.
Battery-Powered Utility Meter
The PIC16LF1933T-I/SS is well suited to battery-powered water, gas and heat meters because its nanoWatt XLP sleep current drops below 50 nA with the LCD and RTCC still active, while the on-chip 4x24-segment LCD driver can display digits, units and status icons without an external controller. Designers typically connect the meter's pulse-output or hall sensor to a Timer1 capture input, run flow accumulation in the 7KB Flash and store tamper events in the 256B EEPROM. The 1.8V-3.6V Vdd range allows direct operation from a single lithium AA or DD cell down to end-of-life voltage, extending the meter's service interval.
Được đề xuất
Electronic Shelf Label
Electronic shelf labels (ESLs) require a low-cost MCU that can drive a segment LCD, run from a coin cell for years and wake periodically over a wireless link. The PIC16LF1933T-I/SS meets all three requirements: its built-in LCD controller directly drives the ESL's reflective display without a boost circuit, the EUSART can bit-bang a 2.4 GHz transceiver's SPI bus, and the XLP sleep current below 50 nA extends coin-cell life to 5+ years at hourly refresh rates. The 256B EEPROM stores pricing and node ID, while the 7KB Flash fits the wireless protocol stack.
Được đề xuất
Home-Automation Sensor Node
For Zigbee/Z-Wave/Wi-Fi sensor endpoints, the PIC16LF1933T-I/SS supplies housekeeping logic, sensor housekeeping and a user-facing LCD. Its 11-channel 10-bit ADC reads temperature, humidity and PIR sensors, the CTMU handles capacitive touch buttons on the wall plate, and the EUSART/SPI/MSSP bridge to a wireless co-processor. The wide 1.8V-3.6V supply range lets the design run directly from two AAA cells without an LDO, while the 256B EEPROM retains calibration and last-known state across battery swaps.
Được đề xuất
White-Goods Front Panel
Washing machines, dishwashers and refrigerators need a single MCU that can read cap-touch buttons, drive a segment LCD and run a motor-control or UART link to the main controller. The PIC16LF1933T-I/SS addresses all three functions: CTMU handles the touch keys, the 4x24-segment LCD driver shows program/temperature/time, and the EUSART/SPI talks to the main appliance MCU. Industrial -40C to +85C temperature grade ensures operation across the appliance's thermal envelope, and the 256B EEPROM stores user presets.
Được đề xuất
Industrial Keypad / HMI
Industrial HMIs with 4x4 keypads, status LEDs and a 2-line character LCD map naturally to the PIC16LF1933T-I/SS. The 18 I/O pins handle the keypad matrix, the LCD driver drives the display directly, and the two CCP modules generate PWM for backlight dimming. The wide operating voltage and -40C to +85C industrial temperature grade support factory-floor deployments, and the 7KB Flash fits a keypad scanner, debounce state machine and Modbus RTU slave over EUSART.
Được đề xuất
Portable Medical Monitoring Device
Wearable and handheld medical devices demand years of battery life and a small, easy-to-read display. The PIC16LF1933T-I/SS combines a 4x24-segment LCD driver, a 10-bit ADC for pulse-oximeter or thermometer front ends, and <50 nA XLP sleep current that lets a CR2032 coin cell last the product's shelf life plus a year of typical use. The 256B EEPROM stores patient-specific calibration data, and the CTMU supports capacitive-touch user controls on the device enclosure.
Được đề xuất
IoT Segment-LCD Display Module
For IoT gateways that expose local status on a small segment LCD (temperature, RSSI, error codes), the PIC16LF1933T-I/SS acts as a co-processor that listens to the host over UART/SPI, formats the data and drives the LCD. The integrated LCD controller eliminates an external HT1621-class driver, reducing BOM cost. Because the same SSOP footprint is shared with PIC16LF1933T-I/ML and PIC16LF1933T-I/MV, designers can swap the package for thinner or smaller enclosures without changing firmware.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LF1933T-I/SS — 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 | PIC16LF1933-I/SS | PIC16LF1933T-I/ML | PIC16LF1933T-I/MV | PIC16LF1933-I/SO | PIC16LF1933-I/MV |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin SSOP | 28-pin SSOP (same) | 28-pin QFN 6x6 (different land pattern) | 28-pin UQFN 4x4 (different land pattern) | 28-pin SOIC 300 mil (different land pattern) | 28-pin UQFN 4x4 (different land pattern) |
| Program Memory | 7 KB Flash | 7 KB Flash | 7 KB Flash | 7 KB Flash | 7 KB Flash | 7 KB Flash |
| Data RAM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| LCD Driver | 4x24 segments | 4x24 segments | 4x24 segments | 4x24 segments | 4x24 segments | 4x24 segments |
| Industrial Temperature Grade | Yes (-40C to +85C) | Yes | Yes | Yes | Yes | Yes |
| Unit Price (qty 1, as of 2026-09-25) | USD 2.95 | USD 2.85 (estimated tray) | USD 3.05 | USD 3.20 | USD 3.05 | USD 3.10 |
Bảo phân biệt quan trọng
- Integrated 4x24-segment LCD driver eliminates external HT1621-class controllers (vsPIC16F88 (no LCD driver))
- nanoWatt XLP sleep current below 50 nA extends coin-cell life to 5+ years (vsPIC16F1933 (standard 1.8V-5.5V variant without XLP))
- 28-pin SSOP package with pin-compatible variants across SSOP/SOIC/QFN/UQFN (vsPIC16LF1903 (28-pin SSOP only, no LCD driver))
Ghi chú thiết kế
Estimated: at Vdd=3.3V with CPU idle and LCD + RTCC active, the PIC16LF1933T-I/SS draws ~50 nA in XLP sleep mode. For battery-life calculations, budget the active current at 1.2 mA @ 32 MHz / 3.3V, and consider the wake-up latency of the 31 kHz internal oscillator (~10 us) when computing the average current for short interrupt-driven tasks.
Decouple Vdd/Vss with a 100 nF ceramic placed within 5 mm of the pins; add a 1 uF or 10 uF bulk capacitor if the LCD-driver charge pump draws pulsed currents. Place the crystal (if used) close to OSC1/OSC2 with short, ground-guarded traces, and route the LCD segment lines away from switching nodes to reduce ghosting. Always use the lower-Vss pin (pin 20) and upper-Vss pin (pin 9) together per datasheet recommendation.
Do not exceed the absolute maximum Vdd of 4.0V; the LF variant is rated for 3.6V normal operation. Always configure the unused I/O pins as outputs low to minimize sleep current. When migrating from the PIC16F1933 (standard 1.8V-5.5V) to the LF variant, verify that any 5V-swinging external signals are level-shifted, and confirm that the chosen oscillator mode is supported at the lower Vdd range.
Keep the analog AVdd/Vref traces short and surrounded by a ground pour; route the comparator inputs (C1IN+, C1IN-) with matched trace lengths when used in differential mode. For capacitive touch, route the CPSx lines with narrow, ground-shielded traces and avoid crossing them with noisy digital lines. The ICD clock/data lines (RB6/RB7) should remain accessible on the PCB even in production, to allow field re-programming.
Thông tin tuân thủ
RoHS and lead-free confirmed per Microchip product page. Not AEC-Q100 qualified - not intended for automotive safety-critical applications. Halogen-free status not explicitly stated in the verified distributor data.
