PIC18F46Q43-E/P - 8-Bit 64KB Flash MCU, 40-Pin DIP | Microchip
MPN: PIC18F46Q43-E/P ✓ Hoạt độngPIC18F46Q43-E/P Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and configurable peripherals on one die. The PIC18 family represents the high-tier of Microchip's 8-bit PIC portfolio, bridging legacy PIC16 simplicity with a richer instruction set and peripheral set. It sits in the hierarchy: PIC18 -> 8-bit MCU -> microcontroller -> embedded computing IC. Its relevance persists in cost-sensitive real-time control applications where deterministic behavior and low BOM cost matter more than raw clock speed.
Key differentiating features of the PIC18F46Q43 family are the new 16-bit PWM with dual independent outputs, ADCC for automated signal conditioning, the CLC block for custom combinational/sequential logic without code overhead, and DMA allowing data movement between peripherals and memory without CPU cycles. These CIPs let designers replace external logic ICs and reduce firmware complexity. Together they cut MCU load, lower power, and shrink BOM.
Architecturally the device combines an enhanced Harvard bus with a hardware multiplier, vectored interrupts, and the Peripheral Pin Select (PPS) module that remaps digital I/O to physical pins at runtime. Up to 36 I/O pins are available, and the ADCC can oversample and filter signals in hardware before CPU read. The instruction cycle is 4 clocks, so a 64 MHz oscillator yields 16 MIPS.
Typical applications include industrial automation and motor control, capacitive touch user interfaces, low-power battery-powered sensing nodes, LED lighting controllers, automotive body and comfort subsystems, and consumer appliance control. The 64 KB Flash variant is well matched to mid-sized state machines with USB-free or CAN-Lite use cases. The DIP-40 package specifically targets prototype boards, educational platforms, and legacy socketed designs where through-hole soldering simplifies rework and field replacement. Compared with 28- and 48-pin Q43 siblings the 40-pin device balances I/O count with board real estate and is the go-to footprint when breadboard-compatible hand assembly is required.
When designing with this part, reserve one of the in-circuit debug pins (ICSPDAT/ICSPCLK) for programming access; the PPS system allows most peripherals to be reassigned, but the ICSP pair is fixed. For low-power designs, use the nanoWatt XLP sleep modes and verify wake-up sources against the interrupt-on-change latency. The ADCC's CVD timing must be calculated from the application notes to avoid touch-button false triggers under noisy supplies. Decouple VDD with a 100 nF ceramic close to each pin pair and add a bulk 10 µF near the regulator. To minimize EMI on PWM outputs, place the driver MOSFETs within 25 mm of the IC and gate them with series resistors when slew rates exceed 5 V/ns.
This page consolidates distributor pricing, drop-in 40-pin PDIP alternatives drawn from Microchip's PIC18 portfolio, and practical design notes that go beyond the manufacturer datasheet to support faster component selection and sourcing decisions.
Bộ thay thế dễ dàng lắp đặt cho PIC18F46Q43-E/P — 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 PIC18F46Q43-E/P (cùng hình factor và footprint) — khác nhau ở ADC, Operating Temperature, Program Memory (Flash), Comparators, Timers.
PIC18F45Q43-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F46K22-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F46K40-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F46K42-E/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F46Q10-E/MP
⚡ Đồng góiLiên hệ để biết giá
Xem tài liệu →PIC18F46Q43-E/P Tỷ lệ tối đa & tính chất điện
| Product Family | PIC18-Q43 |
| Core | PIC18 (8-bit, enhanced Harvard RISC) |
| Program Memory (Flash) | 64 KB |
| Data SRAM | 4 KB |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| Operating Voltage (VDD) | 1.8 V to 5.5 V |
| Nhiệt độ hoạt động | -40 °C to +125 °C (Extended, -E suffix) |
| Hộp | 40-pin PDIP (DIP-40, /P) |
| I/O Pins | 36 |
| ADC | 12-bit ADCC with computation, up to 43 channels |
| PWM | 16-bit, dual independent outputs per timebase |
| Core Independent Peripherals | DMA, CLC, ADCC, 16-bit PWM, CRC, SENT, UART, SPI, I2C |
| Communication | UART, SPI, I2C, SENT (peripheral list varies by pinout) |
| Timers | Multiple 16-bit and 8-bit timers |
| Programming/Debug | ICSP (In-Circuit Serial Programming) via PGD/PGC |
| Peripheral Pin Select | Yes (PPS, runtime remappable digital I/O) |
| Low-Power Technology | nanoWatt XLP |
| Kiểu lắp đặt | Through-Hole |
Cấu hình chân PIC18F46Q43-E/P
| Chân 1 | VDD — Positive supply voltage (1.8 V to 5.5 V) |
| Chân 2 | RA5 — Port A bit 5 / analog input |
| Chân 3 | RA4 — Port A bit 4 |
| Chân 4 | RA3 — Port A bit 3 / MCLR |
| Chân 5 | RC5 — Port C bit 5 / analog input |
| Chân 6 | RC4 — Port C bit 4 |
| Chân 7 | RC3 — Port C bit 3 / SCL1 |
| Chân 8 | RC2 — Port C bit 2 |
| Chân 9 | RC1 — Port C bit 1 / CCP2 |
| Chân 10 | RC0 — Port C bit 0 |
| Chân 11 | VSS — Ground reference |
| Chân 12 | RD0 — Port D bit 0 |
| Chân 13 | RD1 — Port D bit 1 |
| Chân 14 | RD2 — Port D bit 2 |
| Chân 15 | RD3 — Port D bit 3 |
| Chân 16 | RD4 — Port D bit 4 |
| Chân 17 | RD5 — Port D bit 5 |
| Chân 18 | RD6 — Port D bit 6 / TX1 |
| Chân 19 | RD7 — Port D bit 7 / RX1 |
| Chân 20 | VSS — Ground reference |
| Chân 21 | RB0 — Port B bit 0 / INT0 |
| Chân 22 | RB1 — Port B bit 1 / INT1 |
| Chân 23 | RB2 — Port B bit 2 |
| Chân 24 | RB3 — Port B bit 3 |
| Chân 25 | RB4 — Port B bit 4 |
| Chân 26 | RB5 — Port B bit 5 |
| Chân 27 | RB6 — Port B bit 6 / PGC (ICSP clock) |
| Chân 28 | RB7 — Port B bit 7 / PGD (ICSP data) |
| Chân 29 | RA0 — Port A bit 0 / analog input |
| Chân 30 | RA1 — Port A bit 1 / analog input |
| Chân 31 | RA2 — Port A bit 2 / analog input |
| Chân 32 | RA3 — Port A bit 3 |
| Chân 33 | RA4 — Port A bit 4 |
| Chân 34 | RA5 — Port A bit 5 |
| Chân 35 | RE0 — Port E bit 0 |
| Chân 36 | RE1 — Port E bit 1 |
| Chân 37 | RE2 — Port E bit 2 |
| Chân 38 | RE3 — Port E bit 3 |
| Chân 39 | VDD — Positive supply voltage (1.8 V to 5.5 V) |
| Chân 40 | VSS — Ground reference |
Ứng dụng tiêu biểu
PIC18F46Q43-E/P phù hợp cho 6 Áp dụngs: Industrial Automation and Control, Capacitive Touch User Interface, Low-Power Battery-Powered Sensing Nodes, LED Lighting and Dimming Controllers, Automotive Body and Comfort Subsystems, Consumer Appliance Control.
Industrial Automation and Control
The PIC18F46Q43-E/P suits industrial automation where its 12-bit ADCC with computation automates signal conditioning for sensor inputs and its 16-bit PWM drives valves or motor bridges. The CLC block replaces small logic ICs that would otherwise consume board space, while DMA offloads ADC-to-memory transfers so the CPU can focus on deterministic control loops. Operating from 1.8 V to 5.5 V it accepts both 3.3 V and 24 V-derived logic rails.
Được đề xuất
Capacitive Touch User Interface
The PIC18F46Q43-E/P supports capacitive touch through the ADCC's hardware-accelerated Capacitive Voltage Divider (CVD) technique. Auto-scan, oversampling, and threshold detection are all offloaded to the ADCC engine, allowing up to 43 touch channels without CPU cycles. Combined with the CLC, designers can implement gesture decoding and LED feedback in hardware, dramatically simplifying touch firmware and reducing BOM cost versus dedicated touch ICs.
Được đề xuất
Low-Power Battery-Powered Sensing Nodes
With nanoWatt XLP technology, the PIC18F46Q43-E/P supports sleep currents in the sub-microamp range while retaining RAM and peripheral state. The integrated 12-bit ADCC performs periodic sensor reads and DMA-moves results into memory, waking the CPU only on threshold crossings. Its 1.8 V minimum VDD makes it compatible with single-cell Li-coin and dual-AA battery stacks, extending node lifetime for wireless or remote sensors.
Được đề xuất
LED Lighting and Dimming Controllers
The PIC18F46Q43-E/P's 16-bit PWM with dual independent outputs enables precise multi-channel LED dimming and color mixing. Hardware DMA keeps PWM update loops off the CPU, while the CLC can combine PWM outputs to drive high-side MOSFET bridges directly. The 5 V tolerant I/O supports commercial LED-driver interfaces, and the extended -40 °C to +125 °C temperature range suits outdoor and industrial luminaires.
Được đề xuất
Automotive Body and Comfort Subsystems
The PIC18F46Q43-E/P's extended -40 °C to +125 °C operating range and rich peripheral set fit automotive body-control tasks such as seat controllers, mirror modules, HVAC dampers, and ambient lighting. The CLC can decode LIN bus IDs without CPU load, and the 16-bit PWM handles small brushed motors or solenoids. For AEC-Q100 qualified designs Microchip offers automotive-grade variants within the same Q43 family.
Được đề xuất
Consumer Appliance Control
For white-goods and small appliances, the PIC18F46Q43-E/P combines a 16-bit PWM for motor speed control, a 12-bit ADCC for temperature and current sensing, and CLCs for safety interlocks without software overhead. Its 64 KB Flash holds rich UI state machines, while the 4 KB SRAM supports graphical menu rendering. DIP-40 packaging simplifies prototyping and small-batch hand assembly typical of low-volume appliance products.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F46Q43-E/P — 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 | PIC18F45Q43-I/P | PIC18F46K22-I/P | PIC18F46K40-I/P | PIC18F46K42-E/P |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin PDIP | 40-pin PDIP (same) | 40-pin PDIP (same) | 40-pin PDIP (same) | 40-pin PDIP (same) |
| Flash Memory | 64 KB | 32 KB | 64 KB | 64 KB | 64 KB |
| SRAM | 4 KB | 2 KB | 3.8 KB | 3.6 KB | 3.5 KB |
| Maximum CPU Speed | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) |
| DMA Controller | Yes (CIP) | Yes (CIP) | No | No | No |
| CLC (Configurable Logic Cells) | Yes (CIP) | Yes (CIP) | No | No | No |
| ADCC (12-bit ADC w/ Computation) | Yes (CIP) | Yes (CIP) | 10-bit ADC (no computation) | 10-bit ADC (no computation) | 12-bit ADC (no ADCC engine) |
| Operating Temperature | -40 °C to +125 °C (Extended) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +125 °C (Extended) |
Bảo phân biệt quan trọng
- Integrated ADCC with hardware CVD touch support (vsPIC18F46K22-I/P)
- Dual independent 16-bit PWM outputs per timebase (vsPIC18F46K40-I/P)
- Extended -40 °C to +125 °C temperature range (vsPIC18F45Q43-I/P)
Ghi chú thiết kế
Place a 100 nF decoupling capacitor within 5 mm of each VDD/AVDD pin pair, plus a single 10 µF bulk capacitor near the regulator output. Estimated: with VIN=5 V and IO=50 mA total, VDD ripple should remain below 30 mV. For noise-sensitive analog paths, add a ferrite bead between digital and analog supplies and route analog VDD/VSS on separate traces back to a star ground at the regulator.
Reserve the PGC (RB6) and PGD (RB7) pins for ICSP programming - they are not freely remappable via PPS. Maintain at least 0.25 mm clearance around the ICSP header for clip connectors. Estimated: trace lengths under 25 mm for high-speed PWM and SPI signals reduce ringing; route clock lines first, away from analog inputs, and guard them with ground on both sides.
When migrating code from PIC18F46K22 or PIC18F46K40 to the Q43, verify PPS assignments - new Q43 peripherals (CLC, SENT) require configuration of the Peripheral Pin Select table that older K-series devices do not have. Estimated: a forgotten PPS unlock sequence results in silent peripheral failure. Always check the CONFIG words for the extended -E suffix versus industrial -I suffix when programming parts at high volume.
For capacitive touch using ADCC's CVD mode, keep the touch electrode traces short (< 50 mm) and guarded by ground. The ADCC auto-scan sequence must follow Microchip TB3133 timing. Estimated: 4 MHz ADC clock with 32× oversampling gives approximately 38 kS/s effective throughput at 12-bit effective resolution. Add a software debounce timer on the touch-release event to suppress false triggers under noisy conditions.
Thông tin tuân thủ
RoHS and lead-free status depend on the exact ordering suffix. Standard -E/P SKU is typically lead-free but should be confirmed from Microchip material declaration. AEC-Q100 qualification is available for automotive grades of the PIC18F46Q43 family under different ordering codes.
