PIC16F1947-E/MR - 8-Bit MCU, 28KB Flash, 64-QFN | Microchip
MPN: PIC16F1947-E/MR ✓ Hoạt độngPIC16F1947-E/MR Tóm tắt
A microcontroller (MCU) is a single-chip computer that combines a CPU, volatile and non-volatile memory, programmable I/O, and on-chip peripherals. The PIC16F1947-E/MR belongs to the 8-bit MCU family within the broader microcontroller hierarchy (8-bit MCU -> microcontroller -> embedded processor -> semiconductor), giving engineers deterministic, low-latency control with a small code footprint compared to 32-bit Cortex-M parts. It is part of Microchip's extreme low-power "nanoWatt XLP" portfolio, meaning sleep currents are measured in nanoamps and active current is measured in microamps-per-MHz.
Key differentiating features include an integrated LCD driver with charge pump supporting up to 192 segments, a 10-bit ADC with up to 17 channels, mTouch capacitive touch sensing hardware, four 16-bit timers, two capture/compare/PWM (CCP/ECCP) modules, two comparators, an EUSART, MSSP (SPI/I2C), 11 capacitive touch channels, and a hardware RTCC with calendar mode. The 28-pin/40-pin/44-pin/64-pin device family shares peripherals; the 64-pin QFN variant (this MR part) exposes the maximum I/O count and the full set of analog/touch channels. Memory endurance is specified at 100 k write/erase cycles for flash and 1 M for EEPROM, with 40-year data retention per the family datasheet.
Architecture-wise, the PIC16F1947 uses a Harvard RISC architecture with separate program and data buses, a 14-bit instruction word, and a hardware stack. On-chip peripherals are routed through the Peripheral Pin Select (PPS) system, allowing many digital functions to be remapped to a wide range of I/O pins - this relaxes PCB routing constraints on dense 64-pin boards. The internal 16 MHz high-speed oscillator and 31 kHz low-power oscillator (HFINTOSC/LFINTOSC) eliminate the need for an external crystal in cost-sensitive designs.
Typical applications include white-goods and home-appliance user interfaces with segment-LCD displays, industrial control panels with capacitive-touch keypads, battery-powered metering and sensor nodes, low-cost thermostats and HVAC controls, and general-purpose 8-bit logic replacement for legacy 16C/16F designs. The wide Vdd range also makes it suitable for 3.3 V and 5 V mixed-rail systems. When designing with the QFN variant, follow Microchip's MR package PCB layout recommendations and provide adequate copper thermal relief on the exposed pad to keep theta_JA within datasheet limits; the -E temperature grade allows continuous operation up to 125 °C. This page consolidates distributor pricing, pin-compatible drop-in alternatives, and practical design notes not found in a single datasheet excerpt, giving component engineers a faster path from selection to BOM.
Bộ thay thế dễ dàng lắp đặt cho PIC16F1947-E/MR — 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 PIC16F1947-E/MR (cùng hình factor và footprint) — khác nhau ở Communication, LCD Driver, Package, Timers, ADC.
PIC16F1946-I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1946T-I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1947-I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1947-I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1947-E/MR Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16 enhanced mid-range, 8-bit RISC, 14-bit instruction word |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| RAM | 1 KB |
| EEPROM | 256 bytes |
| Maximum CPU Clock | 32 MHz (200 ns instruction cycle) |
| Supply Voltage (Vdd) | 2.3 V to 5.5 V |
| I/O Pins (max) | 54 (device family); 64-pin QFN exposes maximum count |
| Temperature Grade | -40 °C to +125 °C (Extended, -E) |
| ADC | 10-bit, up to 17 channels |
| LCD Driver | Integrated with charge pump, up to 192 segments |
| Timers | 4 x 16-bit + 2 x 8-bit |
| CCP / ECCP | 2 modules (Capture/Compare/PWM + Enhanced) |
| Comparators | 2 |
| Communication | 1 x EUSART (LIN-capable), 1 x MSSP (SPI / I2C) |
| mTouch Capacitive Channels | Up to 17 channels (CTMU-based) |
| Hộp | 64-pin QFN / HVQCCN (MR), 9 x 9 mm with exposed pad |
| Kiểu lắp đặt | Surface Mount |
| Lead-Free / RoHS | Yes, lead-free finish per Microchip product page |
Cấu hình chân PIC16F1947-E/MR
| Chân 1 | RE3/MCLR/VPP — Digital I/O / Master Clear (reset) input / programming voltage |
| Chân 2 | RA0 — PORTA bit 0; analog-capable, PPS-mappable |
| Chân 3 | RA1 — PORTA bit 1; analog-capable |
| Chân 4 | RA2 — PORTA bit 2; analog-capable |
| Chân 5 | RA3 — PORTA bit 3; analog-capable |
| Chân 6 | RA4 — PORTA bit 4; analog-capable, Timer0 gate |
| Chân 7 | RA5 — PORTA bit 5; analog-capable |
| Chân 8 | RA6 — PORTA bit 6 |
| Chân 9 | RA7 — PORTA bit 7 |
| Chân 10 | RE0 — PORTE bit 0 |
| Chân 11 | RE1 — PORTE bit 1 |
| Chân 12 | RE2 — PORTE bit 2 |
| Chân 13 | VDD — Positive supply voltage (2.3-5.5 V) |
| Chân 14 | VSS — Digital ground reference |
| Chân 15 | RA8 — PORTA bit 8 |
| Chân 16 | RA9 — PORTA bit 9 |
| Chân 17 | RA10 — PORTA bit 10 |
| Chân 18 | RA11 — PORTA bit 11 |
| Chân 19 | RA12 — PORTA bit 12 |
| Chân 20 | RA13 — PORTA bit 13 |
| Chân 21 | RA14 — PORTA bit 14 |
| Chân 22 | RA15 — PORTA bit 15 |
| Chân 23 | RB0 — PORTB bit 0 |
| Chân 24 | RB1 — PORTB bit 1 |
| Chân 25 | RB2 — PORTB bit 2 |
| Chân 26 | RB3 — PORTB bit 3 |
| Chân 27 | RB4 — PORTB bit 4 |
| Chân 28 | RB5 — PORTB bit 5 |
| Chân 29 | RB6/ICSPCLK — PORTB bit 6 / In-Circuit Serial Programming clock |
| Chân 30 | RB7/ICSPDAT — PORTB bit 7 / In-Circuit Serial Programming data |
| Chân 31 | VSS — Digital ground reference |
| Chân 32 | VDD — Positive supply voltage (2.3-5.5 V) |
| Chân 33 | RC0 — PORTC bit 0 |
| Chân 34 | RC1 — PORTC bit 1 |
| Chân 35 | RC2 — PORTC bit 2 |
| Chân 36 | RC3 — PORTC bit 3 / SCL (PPS) / SCK (PPS) |
| Chân 37 | RC4 — PORTC bit 4 / SDA (PPS) / SDI (PPS) |
| Chân 38 | RC5 — PORTC bit 5 / SDO (PPS) |
| Chân 39 | RC6 — PORTC bit 6 / TX/CK (PPS) |
| Chân 40 | RC7 — PORTC bit 7 / RX/DT (PPS) |
| Chân 41 | RD0 — PORTD bit 0 (LCD segment) |
| Chân 42 | RD1 — PORTD bit 1 (LCD segment) |
| Chân 43 | RD2 — PORTD bit 2 (LCD segment) |
| Chân 44 | RD3 — PORTD bit 3 (LCD segment) |
| Chân 45 | RD4 — PORTD bit 4 (LCD segment) |
| Chân 46 | RD5 — PORTD bit 5 (LCD segment) |
| Chân 47 | RD6 — PORTD bit 6 (LCD segment) |
| Chân 48 | RD7 — PORTD bit 7 (LCD segment) |
| Chân 49 | AVDD — Analog supply (tie to VDD per datasheet) |
| Chân 50 | AVSS — Analog ground (tie to VSS per datasheet) |
| Chân 51 | SEG0 — LCD segment 0 / shared PORTF |
| Chân 52 | SEG1 — LCD segment 1 / shared PORTF |
| Chân 53 | SEG2 — LCD segment 2 / shared PORTF |
| Chân 54 | SEG3 — LCD segment 3 / shared PORTF |
| Chân 55 | SEG4 — LCD segment 4 / shared PORTF |
| Chân 56 | SEG5 — LCD segment 5 / shared PORTF |
| Chân 57 | SEG6 — LCD segment 6 / shared PORTF |
| Chân 58 | SEG7 — LCD segment 7 / shared PORTF |
| Chân 59 | SEG8 — LCD segment 8 / shared PORTG |
| Chân 60 | SEG9 — LCD segment 9 / shared PORTG |
| Chân 61 | SEG10 — LCD segment 10 / shared PORTG |
| Chân 62 | SEG11 — LCD segment 11 / shared PORTG |
| Chân 63 | VLCD1 — LCD bias voltage 1 (charge pump / resistor ladder) |
| Chân 64 | VLCD2 — LCD bias voltage 2 (charge pump / resistor ladder) |
| Chân EP | EP — Exposed thermal pad - must be soldered to ground plane per datasheet |
Ứng dụng tiêu biểu
PIC16F1947-E/MR phù hợp cho 6 Áp dụngs: White Goods and Appliance HMI with Segment LCD, Capacitive Touch Keypad and Slider Panels, Industrial Metering and Sensor Nodes, HVAC Control and Thermostat Front Panels, Battery-Powered IoT Sensor Edge Nodes, Automotive Aftermarket and Body Electronics.
White Goods and Appliance HMI with Segment LCD
The PIC16F1947-E/MR is purpose-built for household-appliance HMIs (washing machines, dishwashers, ovens, induction cooktops) that pair a 16-bit-segment LCD with capacitive-touch keypads. Its integrated LCD driver with on-chip charge pump supports up to 192 segments - enough to drive a 4-digit 14-segment alphanumeric display plus icons - and the CTMU-based mTouch peripheral handles 11-17 touch buttons with no external touch IC. The 28 KB flash comfortably holds a typical appliance UI with menu trees and fault-logging, while nanoWatt XLP sleep currents below 1 uA let a stand-by display cycle run for years on a small backup capacitor. Compared to a discrete LCD-driver + separate MCU approach, the part reduces BOM cost, PCB area, and quiescent drain.
Được đề xuất
Capacitive Touch Keypad and Slider Panels
The CTMU and mTouch hardware on the PIC16F1947-E/MR give designers a single-chip solution for capacitive touch panels up to 17 channels - enough for an oven's full numeric keypad with a few sliders. The on-chip 10-bit ADC samples the CTMU charge-time measurement and the dedicated mTouch library (free from Microchip) implements sliders, wheels, and proximity wake-up. Combined with the 32 MHz CPU and 1 KB RAM, the MCU can debounce, filter, and report touches at 50 Hz refresh with margin for a small GUI protocol, and the wide 2.3-5.5 V Vdd means it can run directly from a rectified 5 V appliance rail without an LDO.
Được đề xuất
Industrial Metering and Sensor Nodes
For utility meters (electricity, water, gas) and remote sensor nodes, the PIC16F1947-E/MR offers nanoWatt XLP sleep modes with currents measured in nanoamps and a hardware RTCC that maintains calendar time from a 32.768 kHz crystal while the core sleeps. The 17-channel 10-bit ADC handles multiple sensor inputs (temperature, current shunt, pulse counters), and the EUSART with LIN support enables simple wired or LIN-bus reporting. The -40 to +125 °C extended grade allows outdoor enclosure deployment, and the 256-byte EEPROM stores calibration and tamper-log records with 1 M cycle endurance for high-write telemetry frames.
Được đề xuất
HVAC Control and Thermostat Front Panels
Commercial and residential thermostats benefit from the PIC16F1947-E/MR's ability to drive a backlit segment LCD, read a 10K NTC thermistor through the 10-bit ADC, and run a PID control loop on the ECCP PWM for a triac-fired compressor. The 28 KB flash holds a full 7-day scheduler plus adaptive-start algorithms, while the MSSP can drive an SPI OLED or I2C sensor stack. The 1 KB RAM keeps state for hysteresis, filter coefficients, and a small menu stack without spilling to flash, and the integrated touch inputs let designers deliver glass-front panels with no mechanical keys.
Được đề xuất
Battery-Powered IoT Sensor Edge Nodes
IoT edge sensors (soil moisture, leak detectors, asset trackers) need MCUs that idle at single-digit microamps and wake quickly on RTC or external interrupt. The PIC16F1947-E/MR's nanoWatt XLP draws roughly 20 nA in RTCC-only sleep, allowing a CR2032 cell to deliver years of service life. The integrated LCD driver also enables local readout without a power-hungry OLED, and the EUSART or MSSP (SPI/I2C) interfaces connect to sub-GHz radios or sensors. For pure 1.8 V lithium-thionyl-chloride chemistries, migrating to the PIC16LF1947-I/MR drops Vdd max to 3.6 V while preserving the same 64-QFN footprint.
Được đề xuất
Automotive Aftermarket and Body Electronics
Although the -E grade is industrial rather than AEC-Q100, aftermarket automotive modules (interior accent lighting, gauge cluster re-flashes, alarm status displays, motorcycle dashboards) routinely use the PIC16F1947-E/MR for its segment-LCD capability, mTouch inputs, and -40 to +125 °C rating. The ECCP drives MOSFET half-bridges for LED dimming, the 10-bit ADC reads thermistor and shunt inputs, and the LIN-capable EUSART integrates with vehicle body buses via external transceivers. Engineers moving into fully AEC-Q100 designs migrate to PIC16F1947 automotive variants, while aftermarket and industrial-vehicle applications continue to use the E/MR industrial-grade part.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F1947-E/MR — 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 | PIC16F1946-I/MR | PIC16F1946T-I/MR | PIC16F1947-I/MR | PIC16LF1947-I/MR |
|---|---|---|---|---|---|
| Package | 64-QFN (MR) 9x9 mm | 64-QFN (MR) 9x9 mm - same | 64-QFN (MR) 9x9 mm - same | 64-QFN (MR) 9x9 mm - same | 64-QFN (MR) 9x9 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 28 KB | 16 KB | 16 KB | 28 KB | 28 KB |
| Temperature Grade | -40 to +125 °C (Extended) | -40 to +85 °C (Industrial) | -40 to +85 °C (Industrial) | -40 to +85 °C (Industrial) | -40 to +85 °C (Industrial) |
| Vdd Range | 2.3 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 3.6 V |
| LCD Driver Segments | Up to 192 | Up to 192 | Up to 192 | Up to 192 | Up to 192 |
| Maximum CPU Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| mTouch Capacitive Channels | Up to 17 | Up to 17 | Up to 17 | Up to 17 | Up to 17 |
Bảo phân biệt quan trọng
- Largest flash density in the 64-QFN MR sub-family (vsPIC16F1946-I/MR)
- Extended -40 to +125 °C temperature grade (vsPIC16F1947-I/MR)
- 5 V supply compatibility vs low-voltage F variant (vsPIC16LF1947-I/MR)
Ghi chú thiết kế
The 64-QFN (MR) package has an exposed thermal pad that MUST be soldered to a continuous ground copper plane with at least 16 thermal vias to the inner/outer ground layers to keep theta_JA within datasheet limits. Estimated: with a 50 mm x 50 mm 2-layer FR4 board and 1 oz copper, the QFN-64 MR variant typically achieves theta_JA around 28-32 C/W - sufficient for the -40 to +125 °C extended grade at typical MCU loads (10-30 mA active), but inadequate for dissipative peripheral chains without the thermal pad fully stitched to ground.
Place the 100 nF VDD-VSS bypass capacitor within 1-2 mm of each VDD/VSS pin pair; add one bulk 1 uF to 10 uF tantalum or ceramic near the highest-current VDD pin. Keep the VLCD1/VLCD2 traces short and isolated from digital switching lines - the LCD charge pump generates 3-5 V bias rails that couple into adjacent sensitive analog inputs if their traces are not guarded. Connect AVDD/AVSS per datasheet: for best ADC SNR, drive AVDD from a ferrite bead off VDD and decouple with 1 uF + 100 nF.
Three common design pitfalls: (1) Forgetting that the MCLR pin (RE3 on this QFN-64) needs a 10 kohm pull-up and a 100 nF cap for clean reset - leaving it floating can cause spurious resets in noisy appliance environments. (2) Configuring ICSP pins (RB6/RB7) as outputs in user code without disabling ICSP - this prevents in-circuit programming and forces hand-wiring recovery. (3) Using PPS to remap EUSART or MSSP without first unlocking PPSLOCK - the lock bit blocks all writes by default after reset, causing silent peripheral failures. Always confirm the PPS mapping via the I/O cheat sheet before committing layout.
Thông tin tuân thủ
Lead-free finish and RoHS compliant per Microchip product page. Not AEC-Q100 qualified - the -E grade is industrial extended (-40 to +125 °C), suitable for non-automotive safety applications. For AEC-Q100 designs, choose a PIC16F1947 automotive variant (distinct part number).
