PIC18C452T-E/PT - 8-Bit MCU 32KB EPROM 5V TQFP-44 | Microchip
Référence : PIC18C452T-E/PT ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $18.45 | $18,45 |
| 10 | $16.85 | $168,50 |
| 100 | $14.95 | $1 495,00 |
| 500 | $12.75 | $6 375,00 |
| 1 000 | $10.5 | $10 500,00 |
PIC18C452T-E/PT Présentation
An 8-bit microcontroller (MCU) is a single-chip computer containing a CPU, program memory, data RAM, and integrated peripherals such as timers, ADC, communication interfaces, and I/O ports. The PIC18C family sits within Microchip's high-performance 8-bit portfolio, optimized for embedded control where deterministic instruction timing, low part cost, and rich peripheral integration outweigh the throughput of 16-bit or 32-bit cores.
Key features include 1536 bytes of data RAM, 34 digital I/O pins, a 10-bit multi-channel analog-to-digital converter (ADC), two Capture/Compare/PWM (CCP) modules, three external interrupt pins, four timers (Timer0 8/16-bit, Timer1 16-bit, Timer2 8-bit, Timer3 16-bit), a hardware single-cycle multiplier, and a Parallel Slave Port (PSP). The device supports in-circuit serial programming (ICSP) and is qualified to the extended automotive temperature grade (-40°C to +125°C).
Architecturally, the PIC18C452 uses an enhanced Harvard bus architecture with separate program and data paths, enabling simultaneous instruction fetch and operand access. The hardware multiplier completes 8-bit x 8-bit operations in a single cycle, accelerating digital filter math, PID loops, and CRC-style routines common in motor-control and instrumentation firmware.
Typical applications include industrial control systems, automotive body and powertrain subsystems, instrumentation front-ends with ADC-based sensor acquisition, and embedded control boards replacing discrete logic with a programmable solution. The wide I/O count makes it suitable as a host MCU for human-machine interface (HMI) boards and small appliances.
When designing with this device, note that OTP memory prevents firmware field updates; for production runs requiring firmware revision flexibility, consider the pin-compatible PIC18F452 flash variant. Decoupling the 5V rail with 100 nF ceramic capacitors placed within 5 mm of each supply pin minimizes switching noise on the internal analog sections.
This page synthesizes distributor pricing, drop-in-compatible alternatives, and practical design notes for the PIC18C452T-E/PT that are not found in a single manufacturer datasheet, accelerating your sourcing and design decisions.
Alternatives de remplacement direct pour PIC18C452T-E/PT — 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 PIC18C452T-E/PT (même facteur de forme et même empreinte) — différant par ADC, Operating Temperature, Package, Timers, Serial Interfaces.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC18F452-I/PT
✅ Remplacement direct✓ En stock
$5.84 / unité
Voir la fiche technique →PIC18F452T-I/PT
✅ Remplacement direct✓ En stock
$5 / unité
Voir la fiche technique →PIC18C452-I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC18C452T-I/PT
✅ Remplacement direct✓ En stock
$5.27 / unité
Voir la fiche technique →PIC18C452T-E/L
✅ Remplacement direct✓ En stock
$13.1 / unité
Voir la fiche technique →PIC18F452T-E/PT
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PIC18C452T-E/PT Valeurs maximales et caractéristiques électriques
| Architecture | 8-bit RISC (PIC18C) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 32 KB |
| Data RAM | 1536 bytes |
| Instruction Width | 16-bit |
| Largeur du bus de données | 8-bit |
| Fréquence d'horloge maximale | 40 MHz |
| Performance | 10 MIPS |
| Supply Voltage (Vdd) | 5 V |
| I/O Pins | 34 |
| ADC | 10-bit, multi-channel |
| Timers | Timer0 (8/16-bit), Timer1 (16-bit), Timer2 (8-bit), Timer3 (16-bit) |
| CCP Modules | 2 |
| External Interrupts | 3 |
| Hardware Multiplier | 8-bit x 8-bit, single-cycle |
| Parallel Slave Port (PSP) | Yes |
| Température de fonctionnement | -40C to +125C (automotive E grade) |
| Boîtier | 44-pin TQFP (PT) |
| Type de montage | Surface Mount |
Configuration des broches de PIC18C452T-E/PT
| Broche 1 | MCLR/VPP — Master clear reset (active low) or ICSP programming voltage input |
| Broche 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Broche 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Broche 4 | RA2/AN2/VREF- — PORTA bit 2 / analog input 2 / ADC VREF- |
| Broche 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / ADC VREF+ |
| Broche 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Broche 7 | RA5/AN4 — PORTA bit 5 / analog input 4 |
| Broche 8 | RE0/RD/AN5 — PORTE bit 0 / parallel slave port read / analog input 5 |
| Broche 9 | RE1/WR/AN6 — PORTE bit 1 / PSP write / analog input 6 |
| Broche 10 | RE2/CS/AN7 — PORTE bit 2 / PSP chip select / analog input 7 |
| Broche 11 | VDD — +5V digital supply |
| Broche 12 | VSS — Digital ground |
| Broche 13 | OSC1/CLKI — Crystal oscillator input or external clock input |
| Broche 14 | OSC2/CLKO — Crystal oscillator output or clock output |
| Broche 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output or clock input |
| Broche 16 | RC1/CCP2 — PORTC bit 1 / CCP2 PWM/capture/compare |
| Broche 17 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM/capture/compare |
| Broche 18 | RC3/SCK/SCL — PORTC bit 3 / MSSP SPI clock / I2C clock |
| Broche 19 | RC4/SDI/SDA — PORTC bit 4 / MSSP SPI data in / I2C data |
| Broche 20 | RC5/SDO — PORTC bit 5 / MSSP SPI data out |
| Broche 21 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| Broche 22 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| Broche 23 | RD0/PSP0 — PORTD bit 0 / parallel slave port bit 0 |
| Broche 24 | RD1/PSP1 — PORTD bit 1 / parallel slave port bit 1 |
| Broche 25 | RD2/PSP2 — PORTD bit 2 / parallel slave port bit 2 |
| Broche 26 | RD3/PSP3 — PORTD bit 3 / parallel slave port bit 3 |
| Broche 27 | RD4/PSP4 — PORTD bit 4 / parallel slave port bit 4 |
| Broche 28 | RD5/PSP5 — PORTD bit 5 / parallel slave port bit 5 |
| Broche 29 | RD6/PSP6 — PORTD bit 6 / parallel slave port bit 6 |
| Broche 30 | RD7/PSP7 — PORTD bit 7 / parallel slave port bit 7 |
| Broche 31 | VSS — Digital ground |
| Broche 32 | VDD — +5V digital supply |
| Broche 33 | RB0/INT0 — PORTB bit 0 / external interrupt 0 |
| Broche 34 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| Broche 35 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| Broche 36 | RB3/CCP2 — PORTB bit 3 / CCP2 alternate output |
| Broche 37 | RB4 — PORTB bit 4 / interrupt-on-change |
| Broche 38 | RB5 — PORTB bit 5 / interrupt-on-change |
| Broche 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Broche 40 | RB7/PGD — PORTB bit 7 / ICSP data |
| Broche 41 | VDD — +5V digital supply |
| Broche 42 | VSS — Digital ground |
| Broche 43 | NC — Not connected (per datasheet - physically present, electrically no-connect on PIC18C452) |
| Broche 44 | NC — Not connected (per datasheet - physically present, electrically no-connect on PIC18C452) |
Applications typiques
PIC18C452T-E/PT convient pour 6 applications: Industrial Control Systems, Automotive Body & Powertrain Subsystems, Instrumentation & Sensor Acquisition, Consumer Appliance Controllers, Human-Machine Interface (HMI) Boards, Motor Control (Low-Voltage DC/BLDC).
Industrial Control Systems
The PIC18C452T-E/PT's 32KB program memory, 1536 bytes RAM, and 34 I/O pins make it well suited to industrial control boards that read sensors, drive actuators, and run PID control loops. The 10 MIPS throughput supports deterministic control loops at sub-millisecond periods, while the hardware 8x8 multiplier accelerates filter math for digital PID implementations. The automotive-grade E temperature rating guarantees operation in factory-floor enclosures up to +125C junction temperature.
Recommandé
Automotive Body & Powertrain Subsystems
Automotive body controllers, instrument clusters, HVAC modules, and simple powertrain controllers rely on the PIC18C452T-E/PT's extended temperature grade (-40C to +125C), 10 MIPS throughput, and integrated CAN-friendly peripherals. The OTP EPROM provides a measure of firmware protection against reverse engineering. The 10-bit ADC handles sensor inputs for temperature, pressure, and throttle position, while the two CCP modules drive PWM outputs for motor control and lighting intensity modulation.
Recommandé
Instrumentation & Sensor Acquisition
Test and measurement front-ends use the PIC18C452T-E/PT's 10-bit multi-channel ADC, 1536 bytes RAM, and three external interrupts to sample analog signals and respond to threshold events. The single-cycle 8x8 hardware multiplier accelerates digital filter math for moving averages and weighted-window compensation. With 34 I/O pins available, the chip can scan a matrix of buttons while driving a character LCD without external I/O expanders.
Recommandé
Consumer Appliance Controllers
Appliance mainboards for washing machines, dishwashers, ovens, and small HVAC units benefit from the PIC18C452T-E/PT's combination of low cost, ample program memory (32KB), and rich peripheral set including two CCP modules for motor and heater PWM control. The PIC18C RISC architecture executes most instructions in a single cycle, simplifying cycle-count planning for time-sensitive I/O such as triac-fired heater zero-crossing detection.
Recommandé
Human-Machine Interface (HMI) Boards
Simple HMI panels with LCDs, keypads, and rotary encoders pair naturally with the PIC18C452T-E/PT's 34 I/O pins, 10-bit ADC for backlight or trim-pot sensing, and hardware interrupts for encoder quadrature decoding. The 1536-byte RAM buffer is sufficient to hold 4x20 character LCD display strings plus a debounced keypad history. Automotive E temperature grade ensures reliable operation in dashboards and outdoor equipment enclosures.
Recommandé
Motor Control (Low-Voltage DC/BLDC)
The PIC18C452T-E/PT's two CCP modules generate complementary PWM outputs for low-voltage DC motor, BLDC, and stepper drivers up to a few hundred watts. With 10 MIPS throughput, the firmware can sample current sensors via the 10-bit ADC and adjust PWM duty within a 1 kHz control loop without timing pressure. Automotive temperature grade makes it appropriate for electric bike controllers, window lift modules, and small fan drives.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC18C452T-E/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC18F452-I/PT | PIC18F452T-I/PT | PIC18C452-I/PT | PIC18F452T-E/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-44 (PT) | TQFP-44 (PT) - same | TQFP-44 (PT) - same | TQFP-44 (PT) - same | TQFP-44 (PT) - same |
| Program Memory Type | OTP EPROM 32KB | Flash 32KB | Flash 32KB | OTP EPROM 32KB | Flash 32KB |
| Data RAM | 1536 bytes | 1536 bytes | 1536 bytes | 1536 bytes | 1536 bytes |
| Maximum Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Performance (MIPS) | 10 MIPS | 10 MIPS | 10 MIPS | 10 MIPS | 10 MIPS |
| I/O Pins | 34 | 34 | 34 | 34 | 34 |
| ADC | 10-bit multi-channel | 10-bit multi-channel | 10-bit multi-channel | 10-bit multi-channel | 10-bit multi-channel |
| Temperature Grade | Automotive E (-40C to +125C) | Industrial I (-40C to +85C) | Industrial I (-40C to +85C) | Industrial I (-40C to +85C) | Automotive E (-40C to +125C) |
| CCP Modules | 2 | 2 | 2 | 2 | 2 |
| In-Circuit Reprogramming | No (OTP EPROM) | Yes (Flash) | Yes (Flash) | No (OTP EPROM) | Yes (Flash) |
| Lifecycle Status | Obsolete | Mature / Active | Mature / Active | Obsolete | Mature / Active |
Principaux différenciateurs
- Same die as PIC18F452 with flash upgrade path (vs PIC18F452-I/PT)
- Automotive extended temperature grade (-40C to +125C) (vs PIC18C452-I/PT)
- Larger program memory than PIC16F predecessors (vs PIC16F877-I/P)
Notes de conception
Place 100 nF ceramic decoupling capacitors within 5 mm of each VDD pin (pins 11, 32, 41) and a single 10 uF bulk tantalum or ceramic on the 5V rail. For analog noise-sensitive designs (ADC), add a separate 100 nF + 10 uF pair on AVdd/Vss if the board separates digital and analog supplies, even though the PIC18C452 family typically shares AVdd and Vdd internally. Keep total supply current budget under 250 mA peak to avoid internal LDO heating.
Route the 40 MHz crystal traces (OSC1 pin 13, OSC2 pin 14) short and symmetric to minimize skew. Keep the MCLR/VPP trace short and isolated; if the design uses ICSP, place a 10 kOhm pull-up and a 100 nF + diode reset network to allow in-circuit programming without disturbing run-time reset. The 44-pin TQFP at 0.8 mm pitch tolerates standard 4-layer PCB routing; use 0.15 mm/0.30 mm (6/12 mil) traces with 0.2 mm clearance.
Be aware that OTP EPROM devices cannot be field-updated. If your design uses the C variant to lock firmware, you will need a separate factory programming step via ICSP, and any silicon revision requires new tooling. Plan upgrade paths by reserving board space for an optional flash variant (PIC18F452) footprint. Confirm CONFIG bits (oscillator, watchdog, brown-out, code protection) for each board variant before firmware release.
Informations de conformité
RoHS status marked [DATA_NEEDED] - manufacturer datasheet for this obsolete part does not explicitly state RoHS compliance on the verified product page. The E temperature grade designation refers to operating range, not AEC-Q100 automotive qualification. Lead-free manufacturing is assumed for tape-and-reel T-suffix TQFP parts.