PIC18F458T-I/L - 40MHz 8-bit MCU 32KB Flash CAN | Microchip
Référence : PIC18F458T-I/L ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $9.32 | $9,32 |
| 10 | $8.49 | $84,90 |
| 100 | $7.45 | $745,00 |
| 500 | $6.78 | $3 390,00 |
| 1 000 | $6.1 | $6 100,00 |
PIC18F458T-I/L Présentation
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, volatile data memory, and programmable peripherals on one silicon die. The PIC18 family sits between PIC16 mid-range and PIC24 dsPIC parts in Microchip's portfolio and is widely used for cost-sensitive embedded control where deterministic interrupt response and broad peripheral integration outperform raw MHz.
Key features include a 32KB flash program store configurable for self-programming, an enhanced CAN 2.0B module with acceptance filters, a 10-bit A/D converter delivering up to 8 channels of analog input, a USART with LIN support, a master/slave SSP port for SPI/I2C, capture/compare/PWM modules, and brown-out/bor reset circuitry. The integrated CAN peripheral is the headline feature, eliminating the need for an external controller chip in industrial and automotive networking applications.
From an architecture view, the PIC18F458 uses a Harvard cache architecture with separate program and data paths, hardware multiplier, and a 16-bit instruction word mapped to an 8-bit data path for code density. The part supports in-circuit serial programming and in-circuit debugging via two I/O pins, accelerating firmware iteration. PLCC-44 packaging is favored for socketed industrial designs where field replacement is expected.
Typical applications include CAN node modules on industrial machinery and automotive subnet controllers, household appliances, sensor interface boards, and small stepper/solenoid drivers. The CAN peripheral and 33 I/O capability position the PIC18F458T-I/L as a network-attached supervisory node in simple automation hierarchies.
When designing with this device, allocate the oscillator budget carefully - switching from a 20 MHz crystal to the 40 MHz maximum changes power dissipation roughly linearly. Add bulk capacitance near the AVdd pin to keep ADC SNR within datasheet limits, and consult the Microchip MPLAB IDE for register-level peripheral configuration.
This page synthesizes current distributor pricing, drop-in alternatives, and practical design notes that complement the manufacturer datasheet for engineers selecting a CAN-capable 8-bit MCU in a PLCC-44 footprint.
Alternatives de remplacement direct pour PIC18F458T-I/L — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC18F458T-I/L (même facteur de forme et même empreinte) — différant par Package, Mounting Type, Operating Temperature, Core, ADC.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC18F458-I/L
✅ Remplacement direct✓ En stock
$4.79 / unité
Voir la fiche technique →PIC18F448-I/L
✅ Remplacement direct✓ En stock
$11.5 / unité
Voir la fiche technique →PIC18F448T-I/L
✅ Remplacement direct✓ En stock
$6.1 / unité
Voir la fiche technique →PIC18F452T-I/L
✅ Remplacement direct✓ En stock
$3.88 / unité
Voir la fiche technique →PIC18F458T-I/L Valeurs maximales et caractéristiques électriques
| Core | PIC18 (8-bit RISC) |
| Program Memory | 32 KB Flash |
| RAM | 1.5 KB |
| EEPROM | 256 bytes |
| Instruction Set Width | 16-bit |
| Fréquence d'horloge maximale | 40 MHz |
| Throughput | 10 MIPS |
| Tension d'alimentation de fonctionnement | 4.2 V to 5.5 V |
| Number of I/O Pins | 33 |
| ADC | 10-bit, 8 channels |
| Integrated CAN | CAN 2.0B with acceptance filters |
| UART/USART | 1 channel with LIN support |
| SPI | Master/Slave SSP |
| I2C | Master/Slave SSP |
| PWM Modules | Yes (CCP/ECCP) |
| Boîtier | 44-pin PLCC (16.59 x 16.59 mm) |
| Température de fonctionnement | -40 C to +85 C (Industrial) |
| Type de montage | Surface Mount (J-Lead) |
| Statut RoHS | Compliant |
| Lead-Free | Yes |
Configuration des broches de PIC18F458T-I/L
| Broche 1 | MCLR/Vpp — Master Clear (reset) input / programming voltage |
| Broche 2 | RA0/AN0 — Digital I/O or ADC analog input 0 |
| Broche 3 | RA1/AN1 — Digital I/O or ADC analog input 1 |
| Broche 4 | RA2/AN2/Vref- — Digital I/O / ADC analog input 2 / ADC reference minus |
| Broche 5 | RA3/AN3/Vref+ — Digital I/O / ADC analog input 3 / ADC reference plus |
| Broche 6 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| Broche 7 | RA5/AN4/SS — Digital I/O / ADC input 4 / SPI slave select |
| Broche 8 | RE0/RD/AN5 — Port E bit 0 / Parallel slave port read / ADC |
| Broche 9 | RE1/WR/AN6 — Port E bit 1 / Parallel slave port write / ADC |
| Broche 10 | RE2/CS/AN7 — Port E bit 2 / Parallel slave port chip select / ADC |
| Broche 11 | VDD — Positive supply voltage |
| Broche 12 | VSS — Ground reference |
| Broche 13 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Broche 14 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Broche 15 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator output / clock input |
| Broche 16 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator / CCP2 module |
| Broche 17 | RC2/CCP1 — Port C bit 2 / Capture Compare PWM1 |
| Broche 18 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Broche 19 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Broche 20 | RC5/SDO — Port C bit 5 / SPI data out |
| Broche 21 | RC6/TX/CK — Port C bit 6 / USART async transmit / clock |
| Broche 22 | RC7/RX/DT — Port C bit 7 / USART async receive / data |
| Broche 23 | RB0/INT0 — Port B bit 0 / External interrupt 0 |
| Broche 24 | RB1/INT1 — Port B bit 1 / External interrupt 1 |
| Broche 25 | RB2/INT2/CANTX — Port B bit 2 / INT2 / CAN transmit (peripheral alternate) |
| Broche 26 | RB3/CANRX — Port B bit 3 / CAN receive (peripheral alternate) |
| Broche 27 | RB4 — Port B bit 4 |
| Broche 28 | RB5 — Port B bit 5 |
| Broche 29 | RB6/PGC — Port B bit 6 / In-circuit debugger clock |
| Broche 30 | RB7/PGD — Port B bit 7 / In-circuit debugger data |
| Broche 31 | VSS — Ground reference |
| Broche 32 | VDD — Positive supply voltage |
| Broche 33 | NC — Not connected (reserved per datasheet) |
| Broche 34 | NC — Not connected (reserved per datasheet) |
| Broche 35 | NC — Not connected (reserved per datasheet) |
| Broche 36 | NC — Not connected (reserved per datasheet) |
| Broche 37 | NC — Not connected (reserved per datasheet) |
| Broche 38 | NC — Not connected (reserved per datasheet) |
| Broche 39 | NC — Not connected (reserved per datasheet) |
| Broche 40 | NC — Not connected (reserved per datasheet) |
| Broche 41 | NC — Not connected (reserved per datasheet) |
| Broche 42 | NC — Not connected (reserved per datasheet) |
| Broche 43 | NC — Not connected (reserved per datasheet) |
| Broche 44 | NC — Not connected (reserved per datasheet) |
Applications typiques
PIC18F458T-I/L convient pour 6 applications: Industrial CAN Node Module, Automotive Body and Convenience Sub-Net, Home Appliance Control Board, Sensor Interface / Data Acquisition Front End, Stepper and Solenoid Driver Module, Legacy Industrial Control Replacement.
Industrial CAN Node Module
The PIC18F458T-I/L is a strong fit for industrial CAN nodes because it integrates a CAN 2.0B controller with acceptance filters directly on chip, removing any need for an external CAN controller. With 32 KB of flash it can host CANOpen or DeviceNet slave stacks, and its 33 I/O pins are sufficient for typical sensor-actuator interfaces. The 40 MHz clock provides 10 MIPS of throughput, comfortably executing the CAN state machine plus the application task at 1 Mbit/s bus rates. PLCC-44 packaging suits socketed industrial modules where field replacement is anticipated without tools or reflow.
Recommandé
Automotive Body and Convenience Sub-Net
In automotive body and convenience modules - window lifters, mirror controllers, HVAC flap drives - the PIC18F458T-I/L provides CAN communication via its integrated CAN 2.0B controller. The 10-bit ADC supports analog sensing of position or temperature, and the PWM modules drive small DC motors directly. Note this is the industrial-grade variant rated to +85 C; for under-hood modules above 85 C, choose the AEC-Q100 qualified -EPT extended-temperature PIC18F4585 family. The PLCC-44 package is favored for legacy automotive designs with sockets.
Recommandé
Home Appliance Control Board
For washing machines, dishwashers, and induction cookers, the PIC18F458T-I/L provides 33 I/O for keypad scanning, relay drivers, triac interfaces, and sensor inputs. The 1.5 KB RAM accommodates user-interface state machines without external memory, and 32 KB flash holds control firmware plus diagnostic logs. The CAN peripheral is useful in premium appliances that participate in home-net or smart-grid networks. Industrial temperature grade (-40 C to +85 C) covers kitchen environments where ambient temperature spikes are common during operation.
Recommandé
Sensor Interface / Data Acquisition Front End
The PIC18F458T-I/L's 10-bit ADC with up to 8 channels makes it a competitive analog front end for moderate-accuracy sensing, while its CAN and USART ports forward digitized sensor data to a host controller. The 256-byte EEPROM can store calibration coefficients. Running at 40 MHz, the ADC can be oversampled for effective noise reduction. Use this design when sensor nodes need to publish data on a CAN bus (e.g., machine tool status monitoring) rather than rely on analog signal wiring back to a PLC.
Recommandé
Stepper and Solenoid Driver Module
With its PWM modules (CCP/ECCP), 33 I/O, and CAN peripheral, the PIC18F458T-I/L serves as a complete stepper motor or solenoid driver node. Each PWM channel can drive a small half-bridge via external MOSFETs, and the USART allows service/debug communication. The CAN bus allows a central PLC to coordinate motion profiles. Industrial temperature grade covers factory automation environments, and the PLCC-44 socket-friendly package simplifies module replacement in the field.
Recommandé
Legacy Industrial Control Replacement
The PIC18F458T-I/L is often specified as a modern replacement for legacy 8051 or PIC16 designs that have grown past their original memory budget. Its 32 KB flash and 1.5 KB RAM allow porting existing firmware with no architectural rewrite, while the CAN and PWM peripherals add networking and motion features. The PLCC-44 pinout drops into pre-existing sockets of earlier PIC18F448/PIC18F458 designs, making this part ideal for upgrade programs where the goal is more memory and same form factor.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC18F458T-I/L — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC18F458-I/L | PIC18F448-I/L | PIC18F448T-I/L | PIC18F4585T-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-PLCC (16.59 x 16.59 mm) | 44-PLCC - same | 44-PLCC - same | 44-PLCC - same | 44-TQFP - different |
| Flash Memory | 32 KB | 32 KB | 16 KB | 16 KB | 48 KB |
| RAM | 1.5 KB | 1.5 KB | 768 B | 768 B | 3.3 KB |
| Maximum Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 48 MHz |
| Integrated CAN 2.0B | Yes | Yes | Yes | Yes | Yes |
| ADC Resolution | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| Number of I/O | 33 | 33 | 33 | 33 | 36 |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Principaux différenciateurs
- Largest flash in PLCC-44 PIC18F448/PIC18F458 family at 32 KB (vs PIC18F448-I/L)
- Integrated CAN 2.0B with acceptance filters (vs PIC18F452T-I/L)
- Tape-and-reel (T suffix) PLCC-44 ready for SMT assembly (vs PIC18F458-I/L)
Notes de conception
Estimated: at 40 MHz the PIC18F458 typically draws ~25 mA active, so a 100 mA LDO plus a 1 uF ceramic bulk at each VDD pin and a 10 uF tantalum at the package is recommended. Place the 1 uF caps within 5 mm of pins 11/12 and 31/32 to suppress switching-induced ringing on ADC channels. AVdd must be tied to Vdd with no inductor; a ferrite is acceptable only if the ADC accuracy budget allows the IR drop.
Do not leave the MCLR/Vpp pin floating - it must be tied to VDD through a 10 kohm pull-up with a 100 nF cap to ground for proper in-circuit serial programming. Floating MCLR causes spurious resets during EFT bursts. According to the Microchip datasheet, only Microchip's ICSP programmer can drive the high-voltage Vpp sequence; a generic ISP tool may damage the part if MCLR is incorrectly biased.
The CANTX and CANRX alternate pin functions on RB2 and RB3 must be remapped before the CAN module is enabled. Configure TRISB and the PPS registers per the datasheet timing diagram before initializing the ECAN module, otherwise the CAN peripheral may latch garbage into acceptance filters. Use 100 ohm termination resistors on each end of the CAN bus with a twisted pair, and place the MCP2551 within 50 mm of the MCU.
Place the 40 MHz crystal within 10 mm of OSC1/OSC2 with a guard ring tied to ground, and route the crystal traces over a continuous ground plane. Add 15-22 pF load caps sized to the crystal's CL specification (not 33 pF as in older PIC16 designs). The PLCC-44 socket should be a low-profile machined-pin socket (e.g., Yamaichi IC149-044-*), not a generic stamped socket, to maintain contact reliability over thermal cycles.
Informations de conformité
RoHS compliant per Microchip product page. Industrial temperature grade (I suffix, -40 C to +85 C). Not AEC-Q100 qualified - choose PIC18F4585-E variant for AEC-Q100 automotive applications.
