PIC18F24K42T-E/SSVAO - 16KB Flash 8-bit MCU, SSOP-28 | Microchip
MPN： PIC18F24K42T-E/SSVAO ✓ 啟用中PIC18F24K42T-E/SSVAO 概覽
An 8-bit microcontroller (MCU) is a single-chip computer that combines a CPU, non-volatile program memory, working RAM, and configurable I/O peripherals on one die. PIC18F devices use an enhanced Harvard RISC architecture with 16-bit instructions executed from Flash, and they sit within the broader hierarchy of microcontroller -> embedded controller -> semiconductor IC. The 'F' denotes Flash program memory and the 'K42' family suffix identifies the third-generation low-power core with on-chip 1.8-5.5V operation, intelligent analog, and configurable logic cells (CLC).
Key features include a 12-bit ADC with Computation (ADC2), a 5-bit DAC, DMA controller, high-speed comparators, configurable logic cells (CLC), complementary waveform generator (CWG), PWM/CCP, and Hardware Limit Timer (HLT). The 28-pin SSOP package offers the smallest SSOP footprint in the family while retaining 25 usable I/O, multiple UART/SPI/I2C, and a 32 kHz low-power oscillator for RTC-style duty-cycled operation.
The architecture uses a 16-bit instruction word on an 8-bit data path with hardware Multiply and a 31-level stack, supporting C-compiled firmware. The 12-bit ADC2 block automates averaging, threshold comparison, and burst-mode sampling, offloading CPU time and enabling low-power sensor acquisition. Vectored interrupts, peripheral pin select (PPS), and nanoWatt XLP power management make the part flexible across motor, lighting, and IoT edge-node designs.
Typical applications include automotive body and sensor modules, industrial control, IoT edge nodes, LED lighting drivers, motor control with CWG/PWM, and battery-powered sensor hubs. The combination of on-chip DMA, ADC2 with computation, and CLC allows software-free signal chains in many cases.
When designing, confirm the VAO suffix indicates the automotive/extended-grade screening flow rather than a standard catalog part; pull-ups on I2C, decoupling per VDD/AVDD pair, and unused-pin configuration to outputs-low are recommended. The 'T' suffix denotes tape-and-reel packaging, suitable for high-volume SMT assembly.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes derived from the Microchip datasheet, datasheet typical-application circuits, and Microchip cross-reference guidance not consolidated in a single manufacturer view.
直接替換替代品，適用於 PIC18F24K42T-E/SSVAO — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC18F24K42T-E/SSVAO （相同外形與佔位） — 差異在於 Operating Temperature, Package, Program Memory (Flash), ADC, Data SRAM.
PIC18F24K42-I/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC18F24K42-E/SS
✅ 直接替換📋 參考替代品（不在目錄中）
PIC18F24K42T-E/SS
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC18F25K42-I/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC18F26K42-I/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC18F24K40-I/SS
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC18F24K42T-E/SSVAO 最大額定值與電氣特性
| Architecture | PIC18 8-bit Harvard RISC |
| Family | PIC18FxxK42 |
| Program Memory (Flash) | 16 KB |
| Data RAM | 1 KB |
| EEPROM | 256 bytes |
| 封裝 | SSOP-28 (5.30 mm body) |
| 腳位數 | 28 |
| Operating Voltage | 1.8 V to 5.5 V |
| Max CPU Speed | 64 MHz (16 MIPS) |
| ADC | 12-bit ADC2 with Computation |
| DAC | 5-bit DAC |
| Comparators | High-speed comparators |
| Configurable Logic Cells (CLC) | Yes |
| Complementary Waveform Generator (CWG) | Yes |
| DMA Controller | Yes |
| PWM / CCP | Yes |
| Hardware Limit Timer (HLT) | Yes |
| Communication | UART, SPI, I2C (with PPS) |
| 工作溫度 | Extended grade (E suffix) |
| Packaging | Tape & Reel (T suffix) |
| RoHS 狀態 | Compliant |
PIC18F24K42T-E/SSVAO ssop-28 (5.30 mm body) 腳位配置指南
PIC18F24K42T-E/SSVAO（ssop-28 (5.30 mm body) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： PIC18F24K42T-E/SSVAO.
請參閱 資料表 以查看完整腳位配置。
典型應用
PIC18F24K42T-E/SSVAO 適用於 7 應用s: Automotive Body Control Module, IoT Edge Sensor Node, LED Lighting Driver, Industrial Motor Control, Battery Charging and Power Management, Consumer Appliance Control, Medical Sensor Hub.
Automotive Body Control Module
The PIC18F24K42T-E/SSVAO's VAO screening flow and extended-temperature operation fit automotive body-control applications such as interior lighting, mirror control, and HVAC auxiliaries. Its 12-bit ADC2 with computation enables accurate battery-voltage and ambient-temperature monitoring across -40C to +125C. The on-chip DMA offloads data movement from the CPU, allowing deterministic response time on CAN-LIN gateway tasks.
推薦
IoT Edge Sensor Node
For battery-powered IoT sensor nodes, the PIC18F24K42T-E/SSVAO delivers nanoWatt XLP deep sleep current under typical conditions and a 1.8 V minimum supply for direct coin-cell operation. Its 12-bit ADC2 with oversampling and Hardware Limit Timer (HLT) automate threshold detection without waking the CPU, which is critical for years-of-life sensor deployments. UART/SPI/I2C with PPS support multiple radios and sensors on the same SSOP-28 footprint.
推薦
LED Lighting Driver
The PIC18F24K42T-E/SSVAO integrates a Complementary Waveform Generator (CWG), PWM, and high-speed comparators ideal for digital LED drivers and dimmable lighting. CWG produces complementary MOSFET drive signals with programmable dead-band, eliminating external logic. ADC2 monitors LED current and temperature, while CLC implements hardware fault protection independent of firmware execution.
推薦
Industrial Motor Control
For small BLDC or stepper control, the PIC18F24K42T-E/SSVAO combines CWG for 3-phase complementary drive, PWM for variable duty, and 12-bit ADC2 for back-EMF sensing in a SSOP-28 outline. The on-chip DMA streams ADC samples without CPU overhead, freeing MIPS for the commutation algorithm. Extended temperature screening supports factory-floor installations near motor windings.
推薦
Battery Charging and Power Management
The PIC18F24K42T-E/SSVAO's 1.8-5.5V operating range, 12-bit ADC2 for current and voltage sensing, and 5-bit DAC for reference setting enable a single-chip Li-ion or lead-acid charge controller. CLC modules implement constant-current/constant-voltage control loops in hardware, reducing firmware complexity. DMA maintains accurate coulomb counting while the CPU sleeps.
推薦
Consumer Appliance Control
In appliances such as coffee makers, washing machines, or smart thermostats, the PIC18F24K42T-E/SSVAO provides capacitive-touch sensing via CLC and ADC2, PWM for motor or heater control, and UART for HMI display interfacing. The SSOP-28 package supports compact board layouts typical of consumer appliances. Self-programmable Flash enables OTA-style field updates.
推薦
Medical Sensor Hub
The PIC18F24K42T-E/SSVAO suits low-risk medical accessories such as personal health monitors or rehabilitation sensors where extended temperature and stable ADC performance are required. ADC2 oversampling supports accurate heart-rate or SpO2 front-end measurements, while DMA streams data to a host MCU. Note: this part is not FDA-cleared for life-support devices; review IEC 60730 for safety-critical functions.
推薦
推薦產品摘要
工程參考資料，適用於 PIC18F24K42T-E/SSVAO — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC18F24K42-I/SS | PIC18F24K42-E/SS | PIC18F25K42-I/SS | PIC18F26K42-I/SS | PIC18F24K40-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SSOP-28 | SSOP-28 - same | SSOP-28 - same | SSOP-28 - same | SSOP-28 - same | SSOP-28 - same |
| Program Flash | 16 KB | 16 KB | 16 KB | 32 KB | 64 KB | 16 KB |
| RAM | 1 KB | 1 KB | 1 KB | 2 KB | 4 KB | 1 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| ADC | 12-bit ADC2 with Computation | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 | 10-bit ADC (no ADC2) |
| Core Generation | K42 with DMA, CLC, CWG | K42 - same | K42 - same | K42 - same | K42 - same | K40 - older generation, no CLC/DMA |
| Operating Voltage | 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 | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
主要差異化特點
- VAO extended-grade screening with same SSOP-28 footprint as industrial siblings (對比PIC18F24K42-I/SS)
- On-chip DMA, CLC, and CWG vs older K40 core (對比PIC18F24K40-I/SS)
- 16 KB Flash in same footprint as 32/64 KB siblings (對比PIC18F25K42-I/SS)
設計說明
Decouple every VDD/AVDD pair with a 100 nF ceramic capacitor placed within 3 mm of the package pin; add a bulk 1-10 uF tantalum or ceramic near the IC. The PIC18F24K42T-E/SSVAO allows independent AVDD/VDD rails, and sharing them via ferrite beads reduces ADC noise coupling. In deep sleep, the nanoWatt XLP mode typically draws microampere-level current, so size the bulk capacitor to hold the rail during wake events.
The SSOP-28 package has a junction-to-ambient thermal resistance of approximately 100 C/W on a 2-layer 1 oz board, per typical Microchip datasheet family guidance. At 64 MHz with peripherals active, power dissipation stays under 50 mW, so no heatsink is required. For sealed enclosures with limited convection, estimate the junction rise as: T_j = T_a + (P_d * theta_JA). Always derate 20% for production tolerances.
Route the ICSP/PGD-PGC programming signals with short traces and avoid crossing high-current switching nets; Microchip ICD programming is robust but sensitive to capacitance >30 pF on PGC/PGD. Place the external 32.768 kHz crystal within 5 mm of SOSC0/SOSC1 if used for RTC. Use ground pour on top and bottom layers stitched with 4-8 vias near VSS pins for low-impedance return paths.
Configure all unused I/O pins as digital outputs low to minimize current leakage in nanoWatt XLP modes - floating inputs can leak nanoamps and defeat the low-power claim. Disable unused peripherals via PMDx registers before sleep; peripherals left clocked draw current even when idle. Ensure PPS assignments for the I2C/SPI/UART peripherals do not conflict with the ICSP programming pins or you will lose in-circuit debug.
合規資訊
VAO suffix indicates Microchip automotive-grade screening; AEC-Q100 status confirmed via Microchip ordering code breakdown. Halogen-free status not explicitly stated in the provided distributor data.
