PIC18F46Q43-E/P - 8-Bit 64KB Flash MCU, 40-Pin DIP | Microchip
料号： PIC18F46Q43-E/P ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.14 | $214.00 |
| 500 | $1.84 | $920.00 |
| 1,000 | $1.62 | $1,620.00 |
PIC18F46Q43-E/P 概述
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.
直接替换替代料： PIC18F46Q43-E/P ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC18F46Q43-E/P （相同外形与封装尺寸） ——差异在于 ADC, Operating Temperature, Program Memory (Flash), Comparators, Timers.
快速对比工具——选择替代料号进行并排对比：
PIC18F45Q43-I/P
✅ 直接替换✓ 有现货
$2.62 / 个
查看数据手册 →PIC18F46K22-I/P
✅ 直接替换✓ 有现货
$2.61 / 个
查看数据手册 →PIC18F46K40-I/P
✅ 直接替换✓ 有现货
$2.4 / 个
查看数据手册 →PIC18F46K42-E/P
✅ 直接替换✓ 有现货
$2.41 / 个
查看数据手册 →PIC18F46Q10-E/MP
⚡ 相同封装✓ 有现货
$1.94 / 个
查看数据手册 →PIC18F46Q43-E/P 最大额定值与电气特性
| 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 |
| 工作温度 | -40 °C to +125 °C (Extended, -E suffix) |
| 封装 | 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 |
| 安装类型 | Through-Hole |
PIC18F46Q43-E/P 引脚配置
| 引脚 1 | VDD — Positive supply voltage (1.8 V to 5.5 V) |
| 引脚 2 | RA5 — Port A bit 5 / analog input |
| 引脚 3 | RA4 — Port A bit 4 |
| 引脚 4 | RA3 — Port A bit 3 / MCLR |
| 引脚 5 | RC5 — Port C bit 5 / analog input |
| 引脚 6 | RC4 — Port C bit 4 |
| 引脚 7 | RC3 — Port C bit 3 / SCL1 |
| 引脚 8 | RC2 — Port C bit 2 |
| 引脚 9 | RC1 — Port C bit 1 / CCP2 |
| 引脚 10 | RC0 — Port C bit 0 |
| 引脚 11 | VSS — Ground reference |
| 引脚 12 | RD0 — Port D bit 0 |
| 引脚 13 | RD1 — Port D bit 1 |
| 引脚 14 | RD2 — Port D bit 2 |
| 引脚 15 | RD3 — Port D bit 3 |
| 引脚 16 | RD4 — Port D bit 4 |
| 引脚 17 | RD5 — Port D bit 5 |
| 引脚 18 | RD6 — Port D bit 6 / TX1 |
| 引脚 19 | RD7 — Port D bit 7 / RX1 |
| 引脚 20 | VSS — Ground reference |
| 引脚 21 | RB0 — Port B bit 0 / INT0 |
| 引脚 22 | RB1 — Port B bit 1 / INT1 |
| 引脚 23 | RB2 — Port B bit 2 |
| 引脚 24 | RB3 — Port B bit 3 |
| 引脚 25 | RB4 — Port B bit 4 |
| 引脚 26 | RB5 — Port B bit 5 |
| 引脚 27 | RB6 — Port B bit 6 / PGC (ICSP clock) |
| 引脚 28 | RB7 — Port B bit 7 / PGD (ICSP data) |
| 引脚 29 | RA0 — Port A bit 0 / analog input |
| 引脚 30 | RA1 — Port A bit 1 / analog input |
| 引脚 31 | RA2 — Port A bit 2 / analog input |
| 引脚 32 | RA3 — Port A bit 3 |
| 引脚 33 | RA4 — Port A bit 4 |
| 引脚 34 | RA5 — Port A bit 5 |
| 引脚 35 | RE0 — Port E bit 0 |
| 引脚 36 | RE1 — Port E bit 1 |
| 引脚 37 | RE2 — Port E bit 2 |
| 引脚 38 | RE3 — Port E bit 3 |
| 引脚 39 | VDD — Positive supply voltage (1.8 V to 5.5 V) |
| 引脚 40 | VSS — Ground reference |
典型应用
PIC18F46Q43-E/P 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： PIC18F46Q43-E/P ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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) |
关键差异点
- Integrated ADCC with hardware CVD touch support （对比 PIC18F46K22-I/P)
- Dual independent 16-bit PWM outputs per timebase （对比 PIC18F46K40-I/P)
- Extended -40 °C to +125 °C temperature range （对比 PIC18F45Q43-I/P)
设计说明
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.
合规信息
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.
