PIC18F46K40-E/P - 8-Bit 64MHz XLP MCU, 64KB Flash, 40-PDIP
MPN: PIC18F46K40-E/P ✓ सक्रियPIC18F46K40-E/P अवलोकन
A microcontroller (MCU) is a single-chip computer containing a CPU, program and data memory, and integrated peripherals. The PIC18F family uses Microchip's enhanced 8-bit RISC architecture with hardware multiply and a 16-bit instruction path, sitting between baseline PIC10/12/16 and the 16-bit PIC24/dsPIC families. Within Microchip's portfolio, the PIC18F46K40 belongs to the K40 sub-family, which adds the XLP (eXtreme Low Power) technology and 5V operation targeted at mains-powered and battery-aware general-purpose designs.
Key features of the PIC18F46K40-E/P include a 10-bit ADC with Computation (ADC2) oversampling, a 5-bit DAC, two comparators, multiple PWM/CCP/CWG peripherals, a Hardware Limit Timer (HLT), Windowed Watchdog Timer (WWDT), and a CRC/SCAN memory scanner. Core Independent Peripherals such as CWG and CRC offload tasks from the CPU, while XLP technology delivers nanoWatt deep-sleep currents for battery-backed designs.
Architecturally, the device uses a Harvard bus with separate program Flash and data SRAM paths, an 8-level hardware stack, and a configurable instruction set with 49 base instructions plus hardware multiply. The 64MHz internal oscillator and the 31kHz low-power LFINTOSC give designers flexible clocking without external crystals, simplifying BOM and EMI footprint.
Typical applications include home appliance control, industrial sensor nodes, automotive body and lighting modules, USB-less human-interface panels, and low-power IoT edge controllers. Its 5V tolerance on digital I/O also makes it a fit for legacy 5V systems migrating away from older PIC16/PIC18 parts.
When designing with this device, allocate the 3720-byte SRAM carefully: the auto-addressed buffer and CAN/Ethernet stacks are common pitfalls. Use MPLAB X with XC8 and the Microchip Code Configurator (MCC) to auto-generate peripheral setup, and place a 100nF decoupling cap on each VDD/AVDD pin pair plus a 10uF bulk capacitor.
के लिए ड्रॉप-इन विकल्प PIC18F46K40-E/P — समान पैकेज, पिन-टू-पिन संगत। PCB रीवर्क आवश्यक करने वाले भिन्न-पैकेज पार्ट्स शामिल नहीं हैं।
इस सीरीज़ के वेरिएंट
समान श्रृंखला के मॉडल जो ड्रॉप-इन संगत हैं PIC18F46K40-E/P (समान फॉर्म फैक्टर और फुटप्रिंट) — इसमें भिन्न Package, Program Memory (Flash), ADC, Operating Temperature, DAC.
PIC18F46K40-I/P
✅ ड्रॉप-इनकीमत के लिए संपर्क करें
डेटाशीट देखें →PIC18F46K42-I/P
✅ ड्रॉप-इन ⚠️ विनिर्देश असत्यापित📋 संदर्भ विकल्प (कैटलॉग में नहीं)
PIC18F45Q43-I/P
✅ ड्रॉप-इन ⚠️ विनिर्देश असत्यापितकीमत के लिए संपर्क करें
डेटाशीट देखें →PIC18F46K40-E/P Maximum Ratings और Electrical Characteristics
| Core Architecture | PIC18 (8-bit RISC, enhanced) |
| Program Memory (Flash) | 64 KB (32K x 16 words) |
| Data SRAM | 3720 bytes |
| Data EEPROM | 1024 bytes |
| Maximum CPU Clock | 64 MHz |
| Operating Voltage | 2.3 V to 5.5 V |
| ADC | 10-bit ADC2 with Computation, up to 35 channels |
| DAC | 5-bit, 1 channel |
| Comparators | 2 |
| PWM / CCP / CWG | Multiple PWM, 3 CCP, 1 CWG |
| Hardware Limit Timer (HLT) | Yes |
| Windowed WDT | Yes (WWDT) |
| CRC / Memory SCAN | Yes |
| I/O Pins | 36 |
| पैकेज | 40-pin PDIP (through-hole) |
| माउंटिंग प्रकार | Through-Hole |
| Temperature Grade (E suffix) | -40C to +125C (Extended Industrial) |
| RoHS स्थिति | Compliant |
| Lead-Free / MSL | Lead-free, MSL 1 |
PIC18F46K40-E/P पिन कॉन्फ़िगरेशन
| पिन 1 | RE3/MCLR — Master Clear (Reset) input, also digital input only on RE3 |
| पिन 2 | RA0 — PORTA bit 0, analog/digital I/O |
| पिन 3 | RA1 — PORTA bit 1, analog/digital I/O |
| पिन 4 | RA2 — PORTA bit 2, analog/digital I/O |
| पिन 5 | RA3 — PORTA bit 3, analog/digital I/O |
| पिन 6 | RA4 — PORTA bit 4, analog/digital I/O |
| पिन 7 | RA5 — PORTA bit 5, analog/digital I/O |
| पिन 8 | RA6 — PORTA bit 6, analog/digital I/O |
| पिन 9 | RA7 — PORTA bit 7, analog/digital I/O |
| पिन 10 | RE0 — PORTE bit 0, analog/digital I/O |
| पिन 11 | RE1 — PORTE bit 1, analog/digital I/O |
| पिन 12 | RE2 — PORTE bit 2, analog/digital I/O |
| पिन 13 | AVDD — Analog supply voltage |
| पिन 14 | AVSS — Analog ground |
| पिन 15 | OSC1/CLKIN — External clock input or crystal connection |
| पिन 16 | OSC2/CLKOUT — External clock output or crystal connection |
| पिन 17 | RC0 — PORTC bit 0, analog/digital I/O |
| पिन 18 | RC1 — PORTC bit 1, analog/digital I/O |
| पिन 19 | RC2 — PORTC bit 2, analog/digital I/O |
| पिन 20 | RC3 — PORTC bit 3, analog/digital I/O |
| पिन 21 | RC4 — PORTC bit 4, analog/digital I/O |
| पिन 22 | RC5 — PORTC bit 5, analog/digital I/O |
| पिन 23 | RC6 — PORTC bit 6, analog/digital I/O |
| पिन 24 | RC7 — PORTC bit 7, analog/digital I/O |
| पिन 25 | RB0 — PORTB bit 0, analog/digital I/O |
| पिन 26 | RB1 — PORTB bit 1, analog/digital I/O |
| पिन 27 | RB2 — PORTB bit 2, analog/digital I/O |
| पिन 28 | RB3 — PORTB bit 3, analog/digital I/O |
| पिन 29 | RB4 — PORTB bit 4, analog/digital I/O |
| पिन 30 | RB5 — PORTB bit 5, analog/digital I/O |
| पिन 31 | RB6 — PORTB bit 6, analog/digital I/O, ICSCLK |
| पिन 32 | RB7 — PORTB bit 7, analog/digital I/O, ICSDAT |
| पिन 33 | VSS — Ground reference |
| पिन 34 | VDD — Positive supply voltage |
| पिन 35 | RD0 — PORTD bit 0, digital I/O |
| पिन 36 | RD1 — PORTD bit 1, digital I/O |
| पिन 37 | RD2 — PORTD bit 2, digital I/O |
| पिन 38 | RD3 — PORTD bit 3, digital I/O |
| पिन 39 | RD4 — PORTD bit 4, digital I/O |
| पिन 40 | RD5/RD6/RD7 — PORTD bits 5-7, digital I/O |
सामान्य अनुप्रयोग
PIC18F46K40-E/P के लिए उपयुक्त है 6 अनुप्रयोगs: Home Appliance Control, Industrial Sensor Nodes, Automotive Body & Lighting Modules, Human-Machine Interface Panels, Battery-Backed IoT Edge Nodes, Legacy 5V System Migration.
Home Appliance Control
The PIC18F46K40-E/P fits washing-machine, dishwasher, and microwave control boards because its 64MHz PIC18 core runs motor-control PWM loops while XLP deep-sleep keeps standby consumption under 1uA. The 5V-tolerant I/O directly drives triac and relay drivers without level shifters, and the 64KB Flash hosts a state-machine plus UART bootloader for service updates.
अनुशंसित
Industrial Sensor Nodes
With 64KB Flash and 3720 bytes SRAM, the PIC18F46K40-E/P runs Modbus RTU or IO-Link-like protocols on 4-20mA loops. The 10-bit ADC2 with Computation performs oversampling for thermocouple or strain-gauge conditioning, while the Hardware Limit Timer (HLT) trips a safety shutdown without CPU intervention. Industrial -40C to +125C rating supports factory-floor deployment.
अनुशंसित
Automotive Body & Lighting Modules
The PIC18F46K40-E/P drives LED arrays and body controllers via PWM, CWG, and CCP peripherals with deterministic 64MHz timing. The Extended -40C to +125C temperature grade handles under-dash environments, while the CRC/SCAN block validates firmware at boot for ASIL-conscious subsystems. Multiple PWM channels enable sequential LED indicators and RGB ambience lighting.
अनुशंसित
Human-Machine Interface Panels
The PIC18F46K40-E/P drives 7-segment, character LCD, and small TFT panels through PWM-driven LED backlights and software-driven segment scanning. The 36 I/O pins directly interface keypad matrices up to 4x4, while the 5-bit DAC generates audio feedback tones. The 64KB Flash accommodates bitmapped font tables and multilingual menu trees.
अनुशंसित
Battery-Backed IoT Edge Nodes
XLP nanoWatt technology makes the PIC18F46K40-E/P suitable for battery-powered edge sensors that wake on interrupt, sample an analog channel with ADC2, transmit over UART, and return to deep-sleep. The Windowed Watchdog (WWDT) detects firmware lockups without external components, while EEPROM stores calibration and threshold values across power cycles.
अनुशंसित
Legacy 5V System Migration
The PIC18F46K40-E/P's 5V-tolerant digital I/O and 2.3V to 5.5V supply allow direct replacement of legacy PIC16F877A, PIC18F4520, and PIC18F4620 boards without reworking the 5V rail. The CWG and PWM block upgrade motor and power-supply control loops, while the 64KB Flash accommodates a modern firmware image with bootloader. This preserves existing 5V analog signal chains.
अनुशंसित
अनुशंसित उत्पादों का सारांश
के लिए इंजीनियरिंग संदर्भ डेटा PIC18F46K40-E/P — तुलना, डिज़ाइन मार्गदर्शन और अनुपालन जानकारी।
चयन गाइड
विकल्पों के साथ तुलना
| पैरामीटर | यह उत्पाद | PIC18F46K40-I/P | PIC18F46K42-I/P | PIC18F45Q43-I/P | PIC18F46K40-I/PT |
|---|---|---|---|---|---|
| Package | 40-pin PDIP | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 44-pin TQFP - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 64 KB | 64 KB | 64 KB | 32 KB (note: lower than this part) | 64 KB |
| Maximum Clock | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Operating Voltage | 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 5.5 V | 2.3 V to 5.5 V |
| Temperature Range | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
| XLP nanoWatt Sleep | Yes | Yes | Yes | Yes (lower) | Yes |
मुख्य विशेषताएँ
- Extended -40C to +125C temperature grade (बनामPIC18F46K40-I/P)
- 64KB Flash vs 32KB on Q43 family (बनामPIC18F45Q43-I/P)
- Through-hole PDIP for prototype and field service (बनामPIC18F46K40-I/PT)
डिज़ाइन नोट्स
Place a 100nF ceramic decoupling capacitor as close as possible to each VDD/AVDD pin pair (pins 13/14 and 33/34 on the 40-pin PDIP). Add a single 10uF bulk capacitor near the device to handle HFINTOSC bursts during 64MHz operation. Do not assume the internal LDO is sufficient - external decoupling is mandatory per the K40 datasheet layout guidelines.
Estimated: the 3720-byte SRAM is shared between the stack, the auto-allocated buffer, and user variables. A typical Modbus RTU stack consumes 800-1000 bytes, leaving 2700+ bytes for application - but careless malloc or large printf buffers can quickly exhaust this. Use the MPLAB X linker's stack-usage analysis to verify call depth fits the 8-level hardware stack.
Route the ICSPDAT (RB7) and ICSCLK (RB6) lines to the ICSP header with no series resistors and short traces to avoid ICD 4 programmer communication failures. Place the MCLR pull-up (typically 10kohm) close to pin 1 with a 100nF cap to ground for debounce. Keep analog traces (RA0-RA5) away from PWM signals to minimize ADC2 crosstalk.
अनुपालन जानकारी
RoHS and lead-free confirmed by Microchip product page. AEC-Q100 not qualified - this is a general-purpose MCU, not an automotive-qualified part. Halogen-free status not explicitly stated in the provided data.
