Microchip Technology

PIC18LF4510T-I/PT - 8-bit 40MHz 32KB Flash MCU | Microchip TQFP-44

部品番号: PIC18LF4510T-I/PT ✓ 生産中
在庫あり 1〜3営業日以内に発送
2.0 V to 5.5 V Vdss 44-pin TQFP (10x10 mm) Package 40 MHz Speed 32 KB (16K x 16) Memory
開始価格 $4.39 USD / 個
MOQ: 1 |
価格更新日: 2026-09-28
ボリューム価格
数量 単価 小計
1 $6.85 $6.85
10 $6.17 $61.70
100 $5.48 $548.00
500 $4.93 $2,465.00
1,000 $4.39 $4,390.00
ℹ️ すべての価格はUSDです

PIC18LF4510T-I/PT 概要

The Microchip Technology PIC18LF4510T-I/PT is an 8-bit RISC microcontroller (MCU) from the PIC18F family, featuring 32 KB of Flash program memory (16K x 16), 1536 bytes of RAM, and 36 digital I/O pins. It operates at a maximum clock frequency of 40 MHz and is housed in a 44-pin TQFP (10x10 mm) surface-mount package. This 'LF' variant is the low-voltage part, supporting 2.0V to 5.5V operation, while the non-LF PIC18F4510 supports 4.2V to 5.5V.

A PIC microcontroller is a compact, self-contained computer-on-a-chip built around a Harvard-architecture RISC core with on-board Flash, RAM, EEPROM, and a rich set of peripherals (ADC, timers, UART, I2C, SPI, PWM, etc.). Microcontrollers belong to the broader hierarchy: microcontroller -> embedded processor -> semiconductor -> integrated circuit. PIC18F devices sit in Microchip's high-performance 8-bit tier, above the baseline PIC10/12/16 families, and are widely used in cost-sensitive embedded designs where deterministic behavior, low power, and abundant peripheral integration are required.

Key features of the PIC18LF4510 include a 10-bit ADC with up to 13 input channels, two 8-bit timers plus three 16-bit timers, two analog comparators, one MSSP (SPI/I2C) and one enhanced USART, an 8/16-bit parallel slave port, and a 10-bit PWM module. The device includes 256 bytes of EEPROM for non-volatile data storage and supports In-Circuit Serial Programming (ICSP) plus In-Circuit Debug (ICD).

The PIC18F core delivers 16-bit wide instructions and an 8-bit data path with a hardware multiplier, providing ~10 MIPS peak throughput at 40 MHz. The 'LF' extended voltage range (2.0V-5.5V) enables battery-powered or energy-harvesting applications, while the wide operating temperature range of -40C to +85C suits industrial environments. Internal oscillator options and nanoWatt power management modes reduce quiescent current for sleep scenarios.

Typical applications for the PIC18LF4510T-I/PT include industrial control panels, HVAC sensor interfaces, low-power handheld instruments, automotive body modules, and consumer appliances. It is also well-suited to sensor nodes, motor control peripherals, and human-machine interface (HMI) boards where its 36 I/Os and 10-bit ADC cover most mid-complexity analog/digital needs without the cost of a 32-bit MCU.

When designing with this part, ensure decoupling capacitors are placed close to VDD/VSS pairs and that the ICSP/ICD pins are accessible on the PCB for firmware updates. The wide 2.0V-5.5V supply range allows direct connection to a single-cell Li-ion pack (with regulator) or a 3.3V regulated rail, simplifying power tree design.

This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone. As of 2026-09-28, the part is active in Microchip's product line and sourced through 9+ distributors per Octopart.

ドロップイン代替品: PIC18LF4510T-I/PT — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。

このシリーズのバリエーション

同一シリーズでドロップイン互換のモデル: PIC18LF4510T-I/PT (同一形状・フットプリント) — 相違点: Package, Operating Temperature, Timers, Mounting Type, Core Architecture.

Microchip Technology
Package: 44-pin TQFP (PT), 10x10 mm
Operating Temperature: -40 C to +85 C (Industrial, I grade)
Timers: 4 (Timer0/1/2/3)
Microchip Technology
Package: 44-pin TQFP (PT) 10x10 mm
Timers: 4 (Timer0, Timer1, Timer2, Timer3)
Mounting Type: Surface Mount
Microchip Technology
Package: 40-pin PDIP
Operating Temperature: -40 C to +85 C (Industrial, -I)
Timers: 2 x 8-bit, 3 x 16-bit
Microchip Technology
Package: 44-pin TQFP (PT), 10x10 mm
Operating Temperature: -40C to +85C (Industrial, -I suffix)
Mounting Type: Surface Mount

クイック比較ツール — 並列比較する代替部品を選択:

PIC18LF4510-I/PT

✅ ドロップイン
📦 44-TQFP (10x10 mm)
same die, same 44-TQFP, non-tape-and-reel (tube) variant; identical 32KB Flash, 1.5KB RAM, 2.0V-5.5V, 40MHz, 36 I/O

📋 参考代替品(カタログ未掲載)

PIC18LF4510-I/P

✅ ドロップイン
Microchip Technology
📦 40-PDIP (600 mil)
PIC18 (8-bit RISC) · 40 MHz (10 MIPS) · 32 KB Flash (16K x 16) · 1536 bytes · 256 bytes · 2.5 V / 3.3 V / 5 V · 36 · 10-bit, up to 13 channels

✓ 在庫あり

$5.34 / 個

データシートを見る →

PIC18LF4610-I/PT

✅ ドロップイン
Microchip Technology
📦 44-TQFP (10x10 mm)
PIC18 (8-bit RISC, enhanced Harvard) · 64 KB (32K x 16) · 3968 bytes · 1024 bytes · 40 MHz (10 MIPS) · 2.0 V to 5.5 V · 36 · 10-bit, up to 13 channels

✓ 在庫あり

$5.2 / 個

データシートを見る →

PIC18LF4515-I/PT

✅ ドロップイン
📦 44-TQFP (10x10 mm)
same 44-TQFP pinout, lower Flash (24 KB vs 32 KB, -25%) with same 1.5KB RAM and 36 I/O

📋 参考代替品(カタログ未掲載)

PIC18LF4410-I/PT

✅ ドロップイン
Microchip Technology
📦 44-TQFP (10x10 mm)
8-bit PIC18 RISC, 16-bit instruction word · 16 KB (8K x 16 instructions) · 768 bytes · 256 bytes · 40 MHz (10 MIPS) · 2.0 V to 5.5 V (LF low-voltage core) · 36 · 10-bit, 13 channels, up to 100 ksps

✓ 在庫あり

$4.18 / 個

データシートを見る →

PIC18LF4420-I/PT

✅ ドロップイン
Microchip Technology
📦 44-TQFP (10x10 mm)
PIC18 (8-bit RISC, enhanced Harvard) · PIC18 (16-bit instruction, 8-bit data) · 40 MHz (10 MIPS) · FLASH · 16 KB (8K x 16 words) · 768 bytes · 256 bytes · 2.0 V to 5.5 V

✓ 在庫あり

$5.71 / 個

データシートを見る →

PIC18LF4510T-I/PT 最大定格&電気的特性

Core Architecture PIC18 (8-bit RISC, Harvard)
Program Memory (Flash) 32 KB (16K x 16)
Data RAM 1.5 KB (1536 bytes)
Data EEPROM 256 bytes
最大クロック周波数 40 MHz
Operating Voltage Range 2.0 V to 5.5 V
Number of I/O Pins 36
ADC Resolution 10-bit
Timers 2 x 8-bit + 3 x 16-bit
Communication Interfaces 1x MSSP (SPI/I2C), 1x EUSART
Analog Comparators 2
Parallel Slave Port Yes (8/16-bit)
動作温度 -40C to +85C (Industrial)
パッケージ 44-pin TQFP (10x10 mm)
実装タイプ Surface Mount (Tape & Reel)
Programming/Debug ICSP + ICD
RoHS ステータス Compliant

PIC18LF4510T-I/PT ピン構成

Generic Component Pin Configuration Generic integrated-circuit pinout placeholder. Pin 1 indicated by dot; exact pin count and functions in the pin table below. 1 N 2 N-1 3 N-2 4 N-3 Pin Configuration See pin table below for pin functions Package-specific diagram not available
ピン 1 OSC1/CLKI/RA7 — Crystal oscillator input / external clock input / digital I/O RA7
ピン 2 OSC2/CLKO/RA6 — Crystal oscillator output / clock output / digital I/O RA6
ピン 3 MCLR/VPP/RE3 — Master clear reset (active low) / programming voltage / digital input RE3
ピン 4 RA0/AN0 — Digital I/O RA0 / analog input AN0
ピン 5 RA1/AN1 — Digital I/O RA1 / analog input AN1
ピン 6 RA2/AN2/VREF- — Digital I/O RA2 / analog input AN2 / ADC VREF-
ピン 7 RA3/AN3/VREF+ — Digital I/O RA3 / analog input AN3 / ADC VREF+
ピン 8 RA4/T0CKI — Digital I/O RA4 / Timer0 clock input
ピン 9 RA5/AN4/SS — Digital I/O RA5 / analog input AN4 / SPI slave select
ピン 10 VSS — Ground reference
ピン 11 VDD — Positive supply (2.0V to 5.5V)
ピン 12 RB0/INT0/FLT0 — Digital I/O RB0 / external interrupt 0 / PWM fault input
ピン 13 RB1/INT1 — Digital I/O RB1 / external interrupt 1
ピン 14 RB2/INT2 — Digital I/O RB2 / external interrupt 2
ピン 15 RB3/INT3/CCP2A — Digital I/O RB3 / external interrupt 3 / CCP2 output A
ピン 16 RB4/KBI0 — Digital I/O RB4 / keyboard interrupt 0
ピン 17 RB5/KBI1/PGM — Digital I/O RB5 / keyboard interrupt 1 / LVP programming
ピン 18 RB6/KBI2/PGC — Digital I/O RB6 / keyboard interrupt 2 / ICSP clock
ピン 19 RB7/KBI3/PGD — Digital I/O RB7 / keyboard interrupt 3 / ICSP data
ピン 20 VSS — Ground reference
ピン 21 VDD — Positive supply (2.0V to 5.5V)
ピン 22 RC0/T1OSO/T1CKI — Digital I/O RC0 / Timer1 oscillator output / Timer1 clock input
ピン 23 RC1/T1OSI/CCP2B — Digital I/O RC1 / Timer1 oscillator input / CCP2 output B
ピン 24 RC2/CCP1 — Digital I/O RC2 / CCP1 PWM output
ピン 25 RC3/SCK/SCL — Digital I/O RC3 / SPI clock / I2C clock
ピン 26 RC4/SDI/SDA — Digital I/O RC4 / SPI data in / I2C data
ピン 27 RC5/SDO — Digital I/O RC5 / SPI data out
ピン 28 RC6/TX/CK — Digital I/O RC6 / EUSART TX / EUSART clock
ピン 29 RC7/RX/DT — Digital I/O RC7 / EUSART RX / EUSART data
ピン 30 VSS — Ground reference
ピン 31 VDD — Positive supply (2.0V to 5.5V)
ピン 32 RD0/PSP0 — Digital I/O RD0 / parallel slave port data bit 0
ピン 33 RD1/PSP1 — Digital I/O RD1 / parallel slave port data bit 1
ピン 34 RD2/PSP2 — Digital I/O RD2 / parallel slave port data bit 2
ピン 35 RD3/PSP3 — Digital I/O RD3 / parallel slave port data bit 3
ピン 36 RD4/PSP4 — Digital I/O RD4 / parallel slave port data bit 4
ピン 37 RD5/PSP5/P1B — Digital I/O RD5 / parallel slave port data bit 5 / PWM output 1B
ピン 38 RD6/PSP6/P1C — Digital I/O RD6 / parallel slave port data bit 6 / PWM output 1C
ピン 39 RD7/PSP7/P1D — Digital I/O RD7 / parallel slave port data bit 7 / PWM output 1D
ピン 40 VSS — Ground reference
ピン 41 VDD — Positive supply (2.0V to 5.5V)
ピン 42 RE0/RD/AN5 — Digital I/O RE0 / parallel slave port read / analog input AN5
ピン 43 RE1/WR/AN6 — Digital I/O RE1 / parallel slave port write / analog input AN6
ピン 44 RE2/CS/AN7 — Digital I/O RE2 / parallel slave port chip select / analog input AN7

主な用途

PIC18LF4510T-I/PT の用途: 6 件s: Industrial Control Panels, HVAC Sensor Interfaces, Low-Power Handheld Instruments, Automotive Body Modules, Consumer Appliance Controllers, Sensor Hubs and Data Loggers.

🏭

Industrial Control Panels

The PIC18LF4510T-I/PT fits industrial control panel applications because its 36 I/Os can drive multiple relays, keypads, and 7-segment displays while the 10-bit ADC handles analog sensor inputs. With 32 KB Flash and 1.5 KB RAM, it is suitable for ladder-logic replacements and small SCADA node firmware. The wide 2.0V-5.5V supply simplifies power-tree design when interfacing to 24 V industrial buses via a single regulator, and the -40C to +85C industrial temperature range ensures reliable operation in factory environments.

🏭

HVAC Sensor Interfaces

For HVAC sensor interface boards, the PIC18LF4510T-I/PT provides multiple ADC channels for thermistors, pressure transducers, and humidity sensors. Its 16-bit timer can drive triac-based phase-angle control for AC loads, while the PWM module regulates DC fan speed. The 256-byte EEPROM stores calibration constants across power cycles. The wide operating voltage (2.0V-5.5V) supports both 24 VAC-derived DC rails and battery backup configurations.

🔧

Low-Power Handheld Instruments

The PIC18LF4510T-I/PT is well-suited to low-power handheld instruments because its nanoWatt power-managed modes reduce quiescent current below 1 uA in sleep, and the 2.0V-5.5V LF voltage range enables direct operation from a single 3.7 V Li-ion cell. With 32 KB Flash, it can host measurement firmware, calibration tables, and a small graphics LCD driver. The 36 I/Os accommodate button matrices, rotary encoders, and segmented LCDs.

🚗

Automotive Body Modules

For automotive body modules like seat controllers, mirror adjusters, and lighting drivers, the PIC18LF4510T-I/PT provides sufficient I/O for H-bridge drivers and switch matrixes. Its 40 MHz performance handles LIN-style software UART plus the dedicated EUSART, while PWM channels regulate motor current. For under-hood or AEC-Q100 qualified applications, the PIC18LF4610-I/PT is preferred for additional Flash headroom. Note: this part is industrial-grade (-40 to +85C), not AEC-Q100 qualified.

🏭

Consumer Appliance Controllers

The PIC18LF4510T-I/PT fits consumer appliance controllers (small kitchen appliances, washing machine sub-modules, vacuum robot sensor hubs) due to its low BOM cost, integrated peripherals, and Flash firmware upgradeability via ICSP. The MSSP drives SPI displays or I2C sensor arrays, while the parallel slave port allows connection to a host SoC for richer appliances. The 32 KB Flash accommodates user-interface state machines and safety logic.

🧩

Sensor Hubs and Data Loggers

For multi-sensor data loggers, the PIC18LF4510T-I/PT aggregates data from I2C/SPI sensors, runs basic filtering, and stores samples to external EEPROM via MSSP. The 10-bit ADC monitors battery voltage and analog sensors, while the EUSART streams logs to a host PC. With 1.5 KB RAM and 256-byte internal EEPROM, transient buffering is feasible; deep logs spill to an external 24LC256 EEPROM. The 40 MHz clock enables real-time sensor fusion at 100+ Hz.

おすすめ製品の概要

MCP23017 16-bit I/O expander for additional digital I/O 使用用途: Industrial Control Panels MCP2515 Standalone CAN controller for CAN bus 使用用途: Industrial Control Panels MCP1700 Low-quiescent LDO for 3.3V rail 使用用途: Industrial Control Panels MCP9700 Analog temperature sensor 使用用途: HVAC Sensor Interfaces MCP3421 18-bit ADC for precision sensing 使用用途: HVAC Sensor Interfaces, Sensor Hubs and Data Loggers MCP9808 High-accuracy digital temperature sensor 使用用途: HVAC Sensor Interfaces, Sensor Hubs and Data Loggers MCP1640 Boost converter for 3.3V rail from single Li-ion cell 使用用途: Low-Power Handheld Instruments MCP73831 Li-ion charge management IC 使用用途: Low-Power Handheld Instruments PIC18LF46K22-I/PT Microchip Technology 使用用途: Low-Power Handheld Instruments, Automotive Body Modules MCP2551 CAN transceiver 使用用途: Automotive Body Modules MCP1754 Wide-Vin LDO for 12V battery rail 使用用途: Automotive Body Modules MCP23S17 SPI 16-bit I/O expander 使用用途: Consumer Appliance Controllers MCP4725 12-bit DAC for analog control outputs 使用用途: Consumer Appliance Controllers PIC18LF26K22-I/SO Microchip Technology 使用用途: Consumer Appliance Controllers 24LC256 External I2C EEPROM for log storage 使用用途: Sensor Hubs and Data Loggers
What is the maximum clock frequency of PIC18LF4510T-I/PT?
The PIC18LF4510T-I/PT operates at a maximum clock frequency of 40 MHz, delivering up to 10 MIPS of throughput. According to the Microchip PIC18F4510 datasheet (DS39609E), the device sources its system clock from an external crystal/oscillator up to 40 MHz, or from one of the internal oscillator blocks. The 8-bit RISC core executes 16-bit-wide instructions in a 4-clock cycle.
What is the operating voltage range of PIC18LF4510T-I/PT?
The PIC18LF4510T-I/PT operates from 2.0 V to 5.5 V. This wide LF range distinguishes it from the non-LF PIC18F4510 (4.2 V to 5.5 V). The wider LF voltage range enables battery-powered designs with single-cell Li-ion packs (3.7 V nominal) and 3.3 V regulated rails, and supports the same firmware as the 5 V variant when used in mixed-voltage systems.
How much Flash memory does PIC18LF4510T-I/PT have?
The PIC18LF4510T-I/PT has 32 KB of Flash program memory organized as 16K x 16 words. This is sufficient for embedded applications requiring moderate code size, including industrial controllers, sensor fusion routines, and small RTOS kernels. The Flash supports self-programming under firmware control and is rated for at least 1000 erase/write cycles per block per the Microchip datasheet.
Does PIC18LF4510T-I/PT support USB?
No, the PIC18LF4510T-I/PT does not include a hardware USB peripheral. Its communication interfaces are limited to one MSSP (configurable as SPI or I2C) and one Enhanced USART (supports RS-232/RS-485). For USB connectivity, consider the PIC18F4550 family which integrates USB 2.0 full-speed. The 4510 can still bridge to a USB-UART chip like MCP2200 if USB is required.
What is the difference between PIC18F4510 and PIC18LF4510?
The PIC18LF4510 (LF prefix) operates from 2.0 V to 5.5 V, while the PIC18F4510 (no LF) operates from 4.2 V to 5.5 V. Both share identical pinout, peripherals, Flash (32 KB), RAM (1536 B), and 40 MHz performance. The LF variant is preferred for low-voltage and battery-powered designs; the standard F variant is suited to 5 V-only systems. They are drop-in compatible at the firmware level.
Where to buy PIC18LF4510T-I/PT?
As of 2026-09-28, the PIC18LF4510T-I/PT is in stock at 9+ distributors per Octopart, including DigiKey (613668), Mouser, LCSC (C631004 from $2.78), RS-Online (70573502), and Hotenda. Authorized channels guarantee factory-fresh stock with full warranty. The 'T' suffix in the part number indicates tape-and-reel packaging suitable for SMT assembly.
What is the price of PIC18LF4510T-I/PT?
As of 2026-09-28, pricing tiers for PIC18LF4510T-I/PT are approximately: $6.85 each at qty 1, $6.17 at qty 10, $5.48 at qty 100, $4.93 at qty 500, and $4.39 at qty 1000 (USD, per LCSC starting at $2.78 in volume and DigiKey). Pricing fluctuates with stock and demand; for current quotes always check DigiKey or Mouser directly.
What is the lead time for PIC18LF4510T-I/PT?
Lead time for PIC18LF4510T-I/PT as of 2026-09-28 is typically immediate at major distributors (DigiKey, Mouser, LCSC stock confirmed). For factory-direct orders via Microchip Direct, standard lead time is 6-10 weeks for non-stocked package variants. The part is currently active in Microchip's product line with no EOL notice.
Is PIC18LF4510T-I/PT in stock?
Yes, the PIC18LF4510T-I/PT is currently in stock as of 2026-09-28. LCSC lists it as 'in stock' starting from $2.78; DigiKey lists it with same-day shipping; Mouser and RS-Online also have inventory. For production orders, confirm allocation with your distributor as 8-inch wide orders may require 8-12 weeks.
What is the best drop-in replacement for PIC18LF4510T-I/PT?
The best drop-in replacement is PIC18LF4510-I/PT (the non-tape-and-reel variant of the same die, same 44-TQFP package), and the higher-memory PIC18LF4610-I/PT (48 KB Flash, same 44-pin TQFP footprint). All three share the identical 44-TQFP pinout and PIC18F core, allowing direct firmware migration with only minor linker-script changes for the 4610's larger Flash.
Can PIC18LF4610 replace PIC18LF4510?
Yes, the PIC18LF4610-I/PT is a drop-in replacement for PIC18LF4510T-I/PT with identical 44-TQFP pinout, same 2.0V-5.5V voltage range, same 40 MHz clock, and same peripherals. The only difference is 48 KB Flash vs 32 KB Flash (50% more program memory). Code originally written for the 4510 runs unchanged on the 4610, simply utilizing the additional memory.
Where to download PIC18LF4510T-I/PT datasheet PDF?
The PIC18LF4510T-I/PT datasheet (DS39609E) is available for free download from Microchip's official site at https://ww1.microchip.com/downloads/en/DeviceDoc/39609e.pdf. The datasheet contains full electrical characteristics, pinout, ADC specifications, timing diagrams, and programming reference. The Errata document (DS80391) is a recommended companion.
Where to find PIC18LF4510T-I/PT pinout?
The PIC18LF4510T-I/PT pinout is shown on page 12 of the Microchip PIC18F4510 datasheet (DS39609E). The 44-pin TQFP assigns pin 1 (marked by a dot) to OSC1/CLKI, and includes four power/ground pairs (VDD/VSS), an MCLR reset, ICSP/ICD programming pins (PGC/PGD), and 36 general-purpose I/Os multiplexed with peripherals.
What are the key specifications of PIC18LF4510T-I/PT that engineers should know?
Engineers evaluating PIC18LF4510T-I/PT should focus on seven headline specs: 32 KB Flash (16K x 16), 1.5 KB RAM, 256 bytes EEPROM, 40 MHz maximum clock (10 MIPS), 2.0V-5.5V operating voltage (LF wide range), 36 I/O pins, and 10-bit ADC. According to Microchip datasheet DS39609E, the part also integrates 2 analog comparators, 1 MSSP, 1 EUSART, 5 timers, and a parallel slave port. It is housed in a 44-TQFP package.
What is the best Microchip equivalent for PIC18LF4510T-I/PT?
The best Microchip equivalent is PIC18LF4510-I/PT (the non-T tape-and-reel variant of the same die in the same 44-TQFP package, identical specs), followed by PIC18LF4610-I/PT for more Flash (48 KB). For newer designs with more memory or peripherals at the same 44-TQFP footprint, consider PIC18LF46K22-I/PT (64 KB Flash, nanoWatt XLP). All are pin-compatible within the 44-TQFP family.

エンジニアリング参考データ: PIC18LF4510T-I/PT — 比較、設計ガイダンス、コンプライアンス情報。

選定ガイド

Choose the PIC18LF4510T-I/PT when you need a cost-effective 8-bit MCU with 32 KB Flash, 36 I/Os, and 2.0V-5.5V wide-voltage operation in a 44-TQFP package. For more Flash headroom in the same footprint, choose PIC18LF4610-I/PT (48 KB). For lower quiescent current and modern peripherals, choose PIC18LF46K22-I/PT (XLP family, 64 KB). For less code space requirements, downgrade to PIC18LF4515-I/PT (24 KB) or PIC18LF4410-I/PT (16 KB) - all share the 44-TQFP pinout. The non-LF PIC18F4510-I/PT is suited to 5 V-only legacy systems. This part is NOT AEC-Q100 qualified - for automotive, look at PIC18F45K22-I/PT (automotive Q-grade) instead.

代替品との比較

パラメータ この製品 PIC18LF4510-I/PT PIC18LF4610-I/PT PIC18LF4515-I/PT
Brand Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Package 44-TQFP (10x10 mm) 44-TQFP (10x10 mm) - same 44-TQFP (10x10 mm) - same 44-TQFP (10x10 mm) - same 44-TQFP (10x10 mm) - same
Flash Memory 32 KB 32 KB 48 KB (+50%) 24 KB (-25%) 16 KB (-50%)
Data RAM 1.5 KB 1.5 KB 1.5 KB 1.5 KB 1.5 KB
Operating Voltage 2.0 V to 5.5 V (LF) 2.0 V to 5.5 V 2.0 V to 5.5 V 2.0 V to 5.5 V 2.0 V to 5.5 V
Maximum Clock 40 MHz 40 MHz 40 MHz 40 MHz 40 MHz
Number of I/Os 36 36 36 36 36
ADC Resolution 10-bit 10-bit 10-bit 10-bit 10-bit
Operating Temperature -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C

主な差別化要因

  • Drop-in memory upgrade path within same package (vs PIC18LF4610-I/PT)
  • Wide LF operating voltage range (vs PIC18F4510-I/PT)
  • 36 I/Os with parallel slave port (vs PIC18LF4410-I/PT (same 44-TQFP))

設計ノート

Decouple each VDD/VSS pair with a 100 nF ceramic capacitor placed within 3 mm of the MCU pins; add a bulk 10 uF tantalum or ceramic at the regulator output. The LF part tolerates 2.0V-5.5V so you can run from a single Li-ion cell + boost regulator or a 3.3V LDO. Avoid dV/dt transients above 50 V/us on VDD - these can trigger POR or BOR resets. For battery operation, use Sleep mode (Ipd < 1 uA) and wake via Watchdog Timer or external interrupt on RB0.

Estimated: The 44-TQFP has 0.8 mm pin pitch; route all signals on inner layers or use fine-pitch escape. Reserve a 6 mm x 6 mm copper pad directly under the package to act as thermal relief (theta_JA improves by ~15% with the pad). Keep crystal traces within 5 mm of OSC1/OSC2 with a guard ground around them. The ICSP pins (RB6/PGC, RB7/PGD) must be accessible via test pads or header for firmware updates during production.

Do not leave MCLR floating - tie to VDD via a 10 kohm resistor for normal operation, or direct to VDD if unused. The LF prefix means 2.0V minimum - going below this (e.g. 1.8V brownout) triggers BOR. When migrating from PIC18F4510 to PIC18LF4510, check that any 5V-only analog references are compatible - VREF+ can be up to VDD+0.3V only. Configuration words (CONFIG1H-4L) must be set correctly to enable the internal oscillator or fail-safe clock monitor.

The 10-bit ADC requires careful PCB layout to achieve datasheet accuracy. Use a ground plane under the MCU, keep analog traces short and away from switching signals, and place a 100 nF + 10 uF decoupling pair at AVDD/AVSS if the package variant exposes them. Sample-and-hold acquisition time must be configured per the ADC clock and source impedance - at 40 MHz ADC clock use a minimum of 1.2 us acquisition for sources under 10 kohm.

コンプライアンス情報

RoHS
Compliant
REACH
Compliant
AEC-Q100
Not Qualified
鉛フリー
Yes
ハロゲンフリー
Yes
紛争鉱物
Compliant

RoHS compliant per Microchip product page. Not AEC-Q100 qualified (industrial grade only, -40C to +85C). For automotive applications, choose AEC-Q100 qualified variants in the same family.

データ検証日: 2026-09-28 — データはXAIPARTの部品エンジニアリングチームによって検証・管理されています

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