PIC18F26K40-I/SS - 8-Bit 64MHz 64KB Flash MCU 28-SSOP | Microchip
料号： PIC18F26K40-I/SS ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.18 | $21.80 |
| 100 | $1.84 | $184.00 |
| 500 | $1.55 | $775.00 |
| 1,000 | $1.32 | $1,320.00 |
PIC18F26K40-I/SS 概述
What is an 8-bit PIC microcontroller? An 8-bit MCU (microcontroller) is a single-chip computer with an 8-bit data path that integrates CPU, non-volatile program memory (Flash), working RAM, EEPROM, and a set of on-chip peripherals (ADC, timers, PWM, communication ports). The PIC18 family is Microchip's high-end 8-bit line, sitting at the top of the 8-bit hierarchy (PIC10/12/16/18) and below the 16-bit dsPIC/PIC24 and 32-bit PIC32 families. The PIC18FxxK40 sub-family adds Core Independent Peripherals (CIPs) - hardware blocks that operate without CPU intervention - which is the primary design differentiator versus older PIC18FxxK20/K22 parts.
Key features include a 10-bit ADC with up to 35 channels, a 5-bit DAC, two comparators with 9-bit references, four 10-bit PWM outputs, three CCP modules, the Complementary Waveform Generator (CWG), the Hardware Limit Timer (HLT), a windowed watchdog timer (WWDT) and a Cyclic Redundancy Check/Scan (CRC/SCAN) module. The XLP (eXtreme Low-Power) technology supports deep-sleep currents in the nanoampere range, making the part suitable for battery-powered and energy-harvesting designs that must extend operating life between cell replacements.
Architecturally, the PIC18F26K40 uses a 16-bit modified Harvard core with separate program and data paths and a hardware multiplier, giving a sustained 16 MIPS throughput at 64 MHz. Peripherals are interconnected via Microchip's PPS (Peripheral Pin Select) routing fabric, which allows most digital I/O and analog functions to be remapped to a wide choice of pins - significantly simplifying PCB layout versus fixed-pin PIC18 predecessors.
Typical applications include home appliances, industrial control panels, IoT sensor nodes, LED lighting controllers, battery-powered metering, low-cost motor control, and consumer electronics that require a generous mix of analog and digital peripherals in a small 28-pin outline. The wide 2.3 V-5.5 V supply range also supports 5 V-tolerant industrial backplanes.
Designers should note that the I-suffix denotes the industrial -40°C to +85°C operating range, while an E-suffix indicates -40°C to +125°C. The /SS package suffix denotes SSOP-28; the PIC18F26K40 is also available in /SO (SOIC-28), /SP (SPDIP-28), /ML (QFN-28) and /MV (UQFN-28) packages from the same die.
This page synthesizes distributor pricing, drop-in alternatives in the same 28-SSOP footprint and practical design notes not present in the standalone datasheet, enabling side-by-side comparison against PIC18F25K40, PIC18F25K42, PIC18F25Q43 and newer PIC18F26K83 family devices.
直接替换替代料： PIC18F26K40-I/SS ——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： PIC18F26K40-I/SS （相同外形与封装尺寸） ——差异在于 ADC, Package, PWM Channels, Operating Temperature, DAC.
快速对比工具——选择替代料号进行并排对比：
PIC18LF26K40-I/SS
✅ 直接替换✓ 有现货
$1.18 / 个
查看数据手册 →PIC18F26K40-E/SS
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.65 / 个
查看数据手册 →PIC18F26K40-I/SS 最大额定值与电气特性
| Core Architecture | PIC18 (8-bit, modified Harvard) |
| CPU Frequency | 64 MHz (max) |
| Instruction Throughput | 16 MIPS (max) |
| Program Flash Memory | 64 KB (32K x 16) |
| SRAM | 4 KB |
| EEPROM | 256 bytes |
| Operating Voltage Range | 2.3 V to 5.5 V |
| ADC | 10-bit, up to 35 channels |
| DAC | 5-bit |
| Comparators | 2 with 9-bit reference |
| PWM Channels | 4 x 10-bit |
| CCP Modules | 3 |
| Peripheral Pin Select (PPS) | Yes |
| Windowed Watchdog Timer (WWDT) | Yes |
| Core Independent Peripherals | CWG, HLT, CRC/SCAN |
| Communication Interfaces | EUSART, SPI, I2C |
| Low-Power Technology | XLP (eXtreme Low-Power) |
| Operating Temperature (I-suffix) | -40 C to +85 C |
| 封装 | SSOP-28 |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| Lead-Free | Yes |
PIC18F26K40-I/SS 引脚配置
| 引脚 1 | RA2 — Bidirectional I/O with analog and PPS remap |
| 引脚 2 | RA3 — Bidirectional I/O with analog and PPS remap |
| 引脚 3 | RA4 — Bidirectional I/O with analog and PPS remap |
| 引脚 4 | RA5 — Bidirectional I/O with analog and PPS remap |
| 引脚 5 | RA6 — Bidirectional I/O with analog and PPS remap |
| 引脚 6 | RA7 — Bidirectional I/O with analog and PPS remap |
| 引脚 7 | VSS — Digital ground |
| 引脚 8 | RA0 — Bidirectional I/O with analog and PPS remap |
| 引脚 9 | RA1 — Bidirectional I/O with analog and PPS remap |
| 引脚 10 | RB0 — Bidirectional I/O with interrupt-on-change and PPS remap |
| 引脚 11 | RB1 — Bidirectional I/O with interrupt-on-change and PPS remap |
| 引脚 12 | RB2 — Bidirectional I/O with interrupt-on-change and PPS remap |
| 引脚 13 | RB3 — Bidirectional I/O with interrupt-on-change and PPS remap |
| 引脚 14 | RB4 — Bidirectional I/O with interrupt-on-change and PPS remap |
| 引脚 15 | RB5 — Bidirectional I/O with interrupt-on-change and PPS remap |
| 引脚 16 | RB6 — Bidirectional I/O with interrupt-on-change and PPS remap; ICSP clock |
| 引脚 17 | RB7 — Bidirectional I/O with interrupt-on-change and PPS remap; ICSP data |
| 引脚 18 | VDD — Digital supply voltage |
| 引脚 19 | VSS — Digital ground |
| 引脚 20 | RC0 — Bidirectional I/O with analog and PPS remap |
| 引脚 21 | RC1 — Bidirectional I/O with analog and PPS remap |
| 引脚 22 | RC2 — Bidirectional I/O with analog and PPS remap |
| 引脚 23 | RC3 — Bidirectional I/O with analog and PPS remap |
| 引脚 24 | RC4 — Bidirectional I/O with analog and PPS remap |
| 引脚 25 | RC5 — Bidirectional I/O with analog and PPS remap |
| 引脚 26 | RC6 — Bidirectional I/O with PPS remap; EUSART TX default |
| 引脚 27 | RC7 — Bidirectional I/O with PPS remap; EUSART RX default |
| 引脚 28 | AVSS — Analog ground (tie to VSS) |
典型应用
PIC18F26K40-I/SS 适用于 6 应用s: Home Appliance Control, Industrial Sensor Conditioning, Battery-Powered IoT Sensor Node, LED Lighting Controller, Low-Cost BLDC Motor Driver, Automotive Body Electronics.
Home Appliance Control
The PIC18F26K40-I/SS suits home appliance control boards running on a regulated 3.3 V or 5 V rail. Its 10-bit ADC handles up to 35 channels of temperature, current and button-matrix scanning, while the four 10-bit PWM channels drive triac-fired heating elements or small brushed DC motors. Running at 64 MHz the CPU can execute appliance state machines and user-interface logic in real time, while the CWG peripheral generates complementary drive for power-conversion blocks.
推荐
Industrial Sensor Conditioning
In industrial sensor front-ends the PIC18F26K40-I/SS digitises 4-20 mA loop signals, RTD or thermocouple inputs and provides linearisation and HART-style modulation in firmware. The 10-bit ADC and 5-bit DAC combination, plus two comparators with 9-bit reference, enable accurate thresholding and excitation generation. PPS routing simplifies sharing pins between analog and digital functions, while the -40 to +85 C industrial range tolerates factory-floor environments.
推荐
Battery-Powered IoT Sensor Node
XLP technology lets the PIC18F26K40-I/SS run years from a small lithium cell when used in IoT sensor nodes. Core Independent Peripherals such as the CWG, HLT and CRC/SCAN wake the core only when required, while deep-sleep currents in the nanoampere range minimize standby drain. The 64 KB Flash stores application plus security stack, and the EUSART plus I2C/SPI blocks handle short-range radio module interfaces.
推荐
LED Lighting Controller
Lighting controllers benefit from the PIC18F26K40-I/SS's four 10-bit PWM channels, ZCD (zero-cross detector) and CWG which together enable smooth dimming of constant-current LED strings. Color-mixing engines, temperature-based derating and DMX or 0-10 V input decoding all run within the 64 KB Flash envelope. The 5 V I/O tolerance simplifies direct interface with triac-dimming front-ends on the AC mains side.
推荐
Low-Cost BLDC Motor Driver
Sensorless BLDC motor control is feasible on the PIC18F26K40-I/SS thanks to the CWG peripheral (complementary outputs with dead-band control) and HLT for hardware-driven commutation timing. Designers implement zero-cross and back-EMF detection through the comparators and ADC, while the four 10-bit PWMs drive the three-phase inverter. The 16 MIPS headroom leaves enough CPU bandwidth for user-interface and diagnostics.
推荐
Automotive Body Electronics
Although not AEC-Q100 qualified, the PIC18F26K40-I/SS still finds use in non-safety automotive body modules such as interior lighting, seat controllers and HVAC flaps. The windowed WWDT and CRC/SCAN help meet OEM diagnostic requirements, and the robust 5 V I/O interfaces with classic automotive bus speeds. For under-hood or AEC-Q100 mission profiles, select PIC18F26K40-E/SS (extended -40 to +125 C) instead.
推荐
推荐产品汇总
工程参考数据： PIC18F26K40-I/SS ——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 | PIC18LF26K40-I/SS | PIC18F26K40-I/SO | PIC18F26K40-E/SS |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SSOP-28 | SSOP-28 - same | SOIC-28 - different footprint | SSOP-28 - same |
| Operating Temperature | -40 to +85 C (I-suffix) | -40 to +85 C | -40 to +85 C | -40 to +125 C (E-suffix) |
| Operating Voltage Range | 2.3 V to 5.5 V | 1.8 V to 3.6 V (LF) | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Core / MIPS | PIC18 8-bit / 16 MIPS | PIC18 8-bit / 16 MIPS | PIC18 8-bit / 16 MIPS | PIC18 8-bit / 16 MIPS |
| Pin Compatibility | n/a (reference) | Drop-in same footprint | Footprint differs (1.27 vs 0.65 mm pitch) | Drop-in same footprint |
关键差异点
- Same SSOP-28 footprint swap to LF variant enables 1.8 V operation for broader battery sourcing （对比 PIC18LF26K40-I/SS)
- Extended -40 to +125 C grade in identical SSOP-28 package enables automotive-grade migrations without PCB changes （对比 PIC18F26K40-E/SS)
设计说明
The SSOP-28 /SS package dissipates roughly 0.5 W in continuous operation at 64 MHz and 5 V due to higher core switching loss. According to Microchip thermal models, theta_JA is around 73 C/W on a 4-layer JEDEC test board and higher on 2-layer boards, so place the IC away from power components and use a thermal via cluster under the central pad if the design requires elevated duty cycles in a sealed enclosure.
Per the Microchip datasheet, place the VDD bypass capacitor (typically 100 nF X7R ceramic) within 5 mm of the VDD pin and the AVSS/AVDD pair if used on analog inputs. Keep the ICSP header traces (RB6/RB7) short and isolated from analog traces to minimise noise pickup during programming. The PPS routing fabric lets you remap analog inputs away from noisy digital lines, so use this flexibility instead of partitioning pins at schematic stage.
Estimated: The PIC18F26K40-I/SS at 64 MHz with full IO toggling can peak near 15 mA VDD current - check that your LDO headroom covers cold-start of a downstream radio module so the rail does not dip below the 2.3 V minimum. Watch for VIL/VIH timing on PPS-remapped peripherals; some peripherals require explicit unlock sequences before configuration. Finally, the I-suffix is industrial grade only - for under-hood or AEC-Q100 demanding applications, pick the E-suffix variant.
合规信息
RoHS and REACH compliance per Microchip product page; not AEC-Q100 qualified - select PIC18F26K40-E/SS (extended temperature) and conduct full AEC-Q100 qualification if required for automotive applications.
