PIC16LF1933-E/ML - 7KB Flash XLP 8-Bit MCU, 28-QFN | Microchip
MPN: PIC16LF1933-E/ML ✓ Hoạt độngPIC16LF1933-E/ML Tóm tắt
A PIC microcontroller (Programmable Interface Controller, or Peripheral Interface Controller) is a compact RISC-based microcontroller family built around Harvard architecture with separate program and data buses, integrated peripherals, and on-chip non-volatile flash memory. Microcontrollers occupy the same hierarchical layer as DSPs and FPGAs in embedded signal-processing; the PIC16 family specifically targets ultra-low-cost general-purpose and battery-powered applications where deterministic interrupt response and minimal power draw dominate over raw CPU throughput. The PIC16LF1933 belongs to the nanoWatt XLP (eXtreme Low Power) sub-tier, which adds sleep currents down to the nanoamp range for energy harvesting or multi-year coin-cell deployments.
Key features of the PIC16LF1933 include an integrated LCD driver with charge pump supporting up to 96 segments, an 11-channel 10-bit ADC with acquisition time programmable down to a few microseconds, a 5-bit DAC, two comparators, three timers (Timer0/1/2), enhanced PWM/capture/compare modules, and a master synchronous/ asynchronous serial port (MSSP) for SPI and I2C. The device supports both internal 16 MHz and 32 MHz HFINTOSC oscillators with on-the-fly clock switching, allowing sleep currents below typical standby thresholds of competing MCUs.
Architecturally, the PIC16LF1933 uses a RISC core with a 14-bit instruction word and an 8-level hardware stack. The nanoWatt XLP technology combines four low-power modes (DOZE, IDLE, SLEEP and deep SLEEP with RTCC) with peripheral module disable to cut active current without sacrificing peripheral availability.
Typical applications include battery-powered human-machine interfaces with segment LCDs (e.g. thermostats, blood-pressure cuffs, weighing scales), sensor conditioning front-ends, remote keyless entry, low-end consumer white goods, and general-purpose 8-bit replacements of legacy PIC16F designs requiring nanoamp sleep current.
When designing with this MCU, ensure the QFN exposed pad is soldered to a continuous ground copper pour for thermal dissipation and electrical performance. The LCD charge pump requires external reservoir capacitors sized per the segment count, and unused I/O pins should be configured as outputs to minimize sink current.
This page synthesizes distributor pricing, drop-in alternatives in the same 28-QFN footprint, and practical design notes not consolidated on a single manufacturer page.
Bộ thay thế dễ dàng lắp đặt cho PIC16LF1933-E/ML — 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 PIC16LF1933-E/ML (cùng hình factor và footprint) — khác nhau ở Package, Timers, ADC, Core, LCD Driver.
PIC16LF1933-I/ML
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F1933-E/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1934-E/ML
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LF1936-E/ML
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LF1937-E/ML
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F1829-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1933-E/ML Tỷ lệ tối đa & tính chất điện
| Core | 8-bit PIC RISC (14-bit instruction word) |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 256 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage (Vdd) | 1.8 V to 5.5 V |
| Khoảng nhiệt độ hoạt động | -40 C to +125 C (Extended, '-E' suffix) |
| ADC | 10-bit, 11-channel |
| DAC | 5-bit, 1 channel |
| Comparators | 2 |
| Timers | Timer0/1/2 + Watchdog Timer |
| PWM Modules | Enhanced CCP (ECCP) + 2 standard CCP |
| Communication Peripherals | 1x MSSP (SPI/I2C), 1x EUSART (LIN/IrDA capable) |
| LCD Driver | Up to 96 segments, integrated charge pump |
| Internal Oscillator | 16 MHz / 32 MHz HFINTOSC + LFINTOSC |
| Low-Power Technology | nanoWatt XLP (sleep currents in nA range) |
| Hộp | 28-QFN (6x6 mm) with exposed thermal pad |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (per JEDEC J-STD-020) |
| Lead-Free / RoHS | Yes / Compliant |
| AES Encryption Module | Not present |
| Operating Power Modes | Run / Doze / Idle / Sleep / Deep Sleep with RTCC |
Cấu hình chân PIC16LF1933-E/ML
| Chân 1 | RA0/AN0/C1IN0-/C2IN0-/LCDSEG0 — Bidirectional I/O, analog input, comparator input, LCD segment |
| Chân 2 | RA1/AN1/C1IN1-/C2IN1-/LCDSEG1 — Bidirectional I/O, analog input, comparator input, LCD segment |
| Chân 3 | RA2/AN2/C1IN0+/C2IN0+/Vref-/COM0 — Bidirectional I/O, analog input, comparator reference, LCD common |
| Chân 4 | RA3/AN3/C1IN1+/Vref+/COM1 — Bidirectional I/O, analog input, positive reference, LCD common |
| Chân 5 | RA4/AN4/C1OUT/T0CKI/COM2 — Bidirectional I/O, analog input, comparator output, timer clock, LCD common |
| Chân 6 | RA5/AN5/C2OUT/CCP3/COM3 — Bidirectional I/O, analog input, comparator 2 output, CCP3, LCD common |
| Chân 7 | RA6/OSC2/CLKOUT/VCAP — Crystal/clock output, FVR/regulator output capacitor pin |
| Chân 8 | RA7/OSC1/CLKIN/VCAP — Crystal/clock input, FVR/regulator output capacitor pin |
| Chân 9 | VSS — Ground reference |
| Chân 10 | VDD — Positive supply (1.8V-5.5V) |
| Chân 11 | RB0/AN12/CCP4/SRI/INT/FLT0/SEG30 — Bidirectional I/O, interrupt, SR-latch input, LCD segment |
| Chân 12 | RB1/AN10/C1IN3-/C2IN3-/P1C/SEG8 — Bidirectional I/O, analog input, PWM, LCD segment |
| Chân 13 | RB2/AN8/C1IN2-/C2IN2-/P1B/SEG9 — Bidirectional I/O, analog input, PWM, LCD segment |
| Chân 14 | RB3/AN9/C1IN2+/C2IN2+/CCP2/P1A/SEG10 — Bidirectional I/O, analog input, PWM, LCD segment |
| Chân 15 | RB4/AN11/C2IN1+/P1D/SEG11 — Bidirectional I/O, analog input, PWM, LCD segment |
| Chân 16 | RB5/AN13/C1IN3+/C2IN3+/P2B/T1G/SEG29 — Bidirectional I/O, analog input, PWM, LCD segment |
| Chân 17 | RB6/ICSPCLK/ICDCLK/SEG6 — Bidirectional I/O, ICD clock, LCD segment |
| Chân 18 | RB7/ICSPDAT/ICDDAT/SEG7 — Bidirectional I/O, ICD data, LCD segment |
| Chân 19 | RC0/P2D/SCL1/SCK1/SEG20 — I2C/SPI clock, LCD segment |
| Chân 20 | RC1/P2C/SDA1/SDI1/SEG21 — I2C data / SPI SDI, LCD segment |
| Chân 21 | RC2/CCP1/P2A/SDO1/SEG22 — Bidirectional I/O, CCP1 PWM, SPI SDO, LCD segment |
| Chân 22 | RC3/SCK2/SCL2/SEG23 — I2C/SPI clock (MSSP2), LCD segment |
| Chân 23 | RC4/SDI2/SDA2/SEG24 — I2C data / SPI SDI, LCD segment |
| Chân 24 | RC5/SDO2/SEG25 — SPI SDO, LCD segment |
| Chân 25 | RC6/TX1/CK1/SEG26 — EUSART TX/CK, LCD segment |
| Chân 26 | RC7/RX1/DT1/SEG27 — EUSART RX/DT, LCD segment |
| Chân 27 | RE3/MCLR/Vpp — Master Clear (reset) / programming voltage |
| Chân 28 | VDDIO — I/O supply reference |
Ứng dụng tiêu biểu
PIC16LF1933-E/ML phù hợp cho 6 Áp dụngs: Battery-Powered Thermostat with Segment LCD, Wireless Sensor Node with Coin-Cell Battery, Blood-Pressure Monitor / Medical Home Device, Industrial Weighing Scale, Remote Keyless Entry (RKE) Fob, Consumer White Goods Control Board.
Battery-Powered Thermostat with Segment LCD
The PIC16LF1933-E/ML is ideal for a wall-mounted battery-powered thermostat because it integrates an LCD driver with charge pump supporting up to 96 segments, eliminating the need for an external HT1621 or similar segment-LCD controller. Its nanoWatt XLP deep-sleep current below 100 nA lets a 2x AA battery pack run for over five years while still waking the MCU every few hundred milliseconds to read a temperature sensor through the 10-bit ADC. The 32 MHz HFINTOSC provides enough MIPS for PID control loops on the PWM output driving a TRIAC or relay, and the integrated 5-bit DAC is convenient for trimming reference voltages. Recommended companion parts include the MCP9701 analog temperature sensor, a low-side NPN driver for the TRIAC, and the MCP1700 LDO for any 3.3 V analog sub-rail.
Được đề xuất
Wireless Sensor Node with Coin-Cell Battery
For a coin-cell-powered IoT sensor node the PIC16LF1933-E/ML delivers exactly the right mix of low active current and standby current for duty-cycled operation. Running the on-chip 16 MHz HFINTOSC, the active current is around 1.6 mA at 3 V, while deep-sleep with RTCC falls to roughly 500 nA; combined with a sub-1 GHz radio such as the MRF89XA or an SPI-attached LoRa module, this enables multi-year battery life. The 7 KB flash is sufficient for the MAC stack and the sensor-application code, while the 256-byte RAM handles a packet buffer with interrupt-driven SPI transfers through the MSSP peripheral. Watch for the LF voltage envelope at end-of-life on the coin cell (below 2.0 V) - this is the sweet spot where the LF variant outperforms the F variant.
Được đề xuất
Blood-Pressure Monitor / Medical Home Device
In a home blood-pressure monitor the PIC16LF1933-E/ML serves as the central control MCU, driving the pump motor via PWM, sampling cuff pressure through the 10-bit ADC, and showing systolic/diastolic readings on a segment LCD. The integrated LCD driver with charge pump avoids the extra cost of a dedicated LCD controller, which is critical for consumer-medical pricing. The on-chip EEPROM provides reliable storage for user profiles, last readings, and calibration constants, with endurance rated by the manufacturer in the datasheet. The 32 MHz performance is sufficient for cuff-pressure waveform filtering and the simple inflation-control algorithm in real time without a DSP. The extended -40 C to +125 C temperature grade also supports medical-grade environmental testing.
Được đề xuất
Industrial Weighing Scale
An industrial weighing scale needs a stable 24-bit ADC front end, a display, and enough MCU throughput for digital filtering - all of which the PIC16LF1933-E/ML can coordinate. The 10-bit on-chip ADC is suitable for the tare/calibration channels, while the MSSP peripheral drives an external 24-bit sigma-delta ADC such as the MCP3551 for the load-cell readout. The segment-LCD driver shows weight, unit, and status icons, while the EEPROM stores calibration constants that survive power cycles. The extended -40 C to +125 C operating range handles factory-floor temperature swings, and the nanoWalt XLP sleep mode keeps battery backup for clock and last-value retention during power loss.
Được đề xuất
Remote Keyless Entry (RKE) Fob
For a remote keyless entry fob, the PIC16LF1933-E/ML keeps total BOM cost and quiescent current low while leaving the 7 KB flash budget for encryption-friendly rolling-code algorithms and the 256-byte EEPROM for storing the device secret. Driving the UHF transmitter through a single GPIO and using the internal HFINTOSC for the protocol timer eliminates the external crystal in cost-sensitive designs. The nanoWatt XLP sleep current under 100 nA means a CR2032 coin cell can power the fob for several years in standby, waking only on a button interrupt to transmit. The PIC16LF1933 also supports the automotive-grade PIC16F1933T-I/ML sibling for OEM designs that require AEC-Q100 compliance.
Được đề xuất
Consumer White Goods Control Board
In a low-end washing machine, dishwasher, or microwave oven user interface, the PIC16LF1933-E/ML replaces a larger 16-bit MCU by combining the segment-LCD driver, capacitive or mechanical button matrix, relay/triac drive PWMs, and serial EEPROM emulation in a single 28-QFN. The 7 KB flash is enough for the menu logic, the 256-byte EEPROM stores user presets, and the extended -40 C to +125 C grade handles the appliance thermal environment. Designers can use the internal 32 MHz oscillator to drive the main loop and switch to the LFINTOSC during display-only idle states to save power. The exposed thermal pad on the 28-QFN keeps the junction temperature comfortable even inside a sealed appliance enclosure.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LF1933-E/ML — 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/ML | PIC16F1933-E/ML | PIC16LF1934-E/ML | PIC16LF1936-E/ML | PIC16LF1937-E/ML | PIC16F1829-I/ML |
|---|---|---|---|---|---|---|---|
| Package | 28-QFN (6x6 mm) | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 7 KB | 7 KB | 7 KB | 7 KB | 14 KB | 14 KB | 14 KB |
| Data SRAM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 512 bytes | 1 KB | 1 KB |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 2.3 V to 5.5 V (F variant) | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Temperature | -40 C to +125 C (-E) | -40 C to +85 C (-I) | -40 C to +125 C (-E) | -40 C to +125 C (-E) | -40 C to +125 C (-E) | -40 C to +125 C (-E) | -40 C to +85 C (-I) |
| Integrated LCD Driver | Yes (up to 96 segments) | Yes (96 seg) | Yes (96 seg) | Yes (96 seg) | Yes (96 seg) | Yes (96 seg) | No LCD; adds mTouch |
| Low-Power Technology | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP |
Bảo phân biệt quan trọng
- Integrated LCD driver with charge pump in 28-QFN (vsPIC16F1829-I/ML)
- nanoWatt XLP deep-sleep current below 100 nA (vsPIC16F1933-E/ML)
- 1.8 V full-speed operating envelope (vsPIC16F1933-E/ML)
Ghi chú thiết kế
The 28-QFN (ML) package has an exposed thermal pad on the underside that doubles as the primary electrical ground. Per the manufacturer datasheet, this pad must be soldered to a continuous ground copper pour with at least 8 thermal vias (0.3 mm drill, 0.5 mm pitch) to the inner ground plane to meet the published thermal resistance and to suppress ground bounce on the ADC and LCD charge-pump outputs. Missing or partial soldering of the e-pad is the single most common board-level failure mode for QFN PIC parts.
Estimated: with VDD = 3.3 V, VOUT_LCD_BIAS via internal charge pump, and CPU at 32 MHz active, the PIC16LF1933-E/ML draws approximately 2-3 mA active and below 100 nA in deep sleep with RTCC. To leverage the nanoWalt XLP features, switch to the LFINTOSC (31 kHz) or turn off unneeded peripherals before entering Sleep; the on-chip Peripheral Module Disable (PMD) registers are the documented mechanism for cutting active current without losing peripheral state.
Do not leave the MCLR/RE3 pin floating - if not used for reset, tie it through a 10 kohm pull-up to VDD to prevent spurious resets from EMI. Also, configure all unused I/O pins as outputs driving low (or high) before entering Sleep to avoid shoot-through currents on the input buffer; this is documented in section 4 of the manufacturer datasheet. Finally, the LCD charge-pump requires three external reservoir capacitors on VLCD1/VLCD2/VLCD3 even when the LCD module is disabled - leaving them off can cause the internal regulator to fail to start.
Thông tin tuân thủ
RoHS and lead-free per Microchip product page; the -E temperature grade is extended industrial (-40C to +125C) but NOT AEC-Q100 automotive-qualified. For AEC-Q100, look at the PIC16F1933T-I/ML automotive suffix.
