PIC18C452T-E/PT - 8-Bit MCU 32KB EPROM 5V TQFP-44 | Microchip
料号： PIC18C452T-E/PT ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 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 概述
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.
直接替换替代料： PIC18C452T-E/PT ——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： PIC18C452T-E/PT （相同外形与封装尺寸） ——差异在于 ADC, Operating Temperature, Package, Timers, Serial Interfaces.
快速对比工具——选择替代料号进行并排对比：
PIC18F452-I/PT
✅ 直接替换✓ 有现货
$5.84 / 个
查看数据手册 →PIC18F452T-I/PT
✅ 直接替换✓ 有现货
$5 / 个
查看数据手册 →PIC18C452-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC18C452T-I/PT
✅ 直接替换✓ 有现货
$5.27 / 个
查看数据手册 →PIC18C452T-E/L
✅ 直接替换✓ 有现货
$13.1 / 个
查看数据手册 →PIC18F452T-E/PT
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC18C452T-E/PT 最大额定值与电气特性
| Architecture | 8-bit RISC (PIC18C) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 32 KB |
| Data RAM | 1536 bytes |
| Instruction Width | 16-bit |
| 数据总线宽度 | 8-bit |
| 最大时钟频率 | 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 |
| 工作温度 | -40C to +125C (automotive E grade) |
| 封装 | 44-pin TQFP (PT) |
| 安装类型 | Surface Mount |
PIC18C452T-E/PT 引脚配置
| 引脚 1 | MCLR/VPP — Master clear reset (active low) or ICSP programming voltage input |
| 引脚 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| 引脚 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| 引脚 4 | RA2/AN2/VREF- — PORTA bit 2 / analog input 2 / ADC VREF- |
| 引脚 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / ADC VREF+ |
| 引脚 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| 引脚 7 | RA5/AN4 — PORTA bit 5 / analog input 4 |
| 引脚 8 | RE0/RD/AN5 — PORTE bit 0 / parallel slave port read / analog input 5 |
| 引脚 9 | RE1/WR/AN6 — PORTE bit 1 / PSP write / analog input 6 |
| 引脚 10 | RE2/CS/AN7 — PORTE bit 2 / PSP chip select / analog input 7 |
| 引脚 11 | VDD — +5V digital supply |
| 引脚 12 | VSS — Digital ground |
| 引脚 13 | OSC1/CLKI — Crystal oscillator input or external clock input |
| 引脚 14 | OSC2/CLKO — Crystal oscillator output or clock output |
| 引脚 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output or clock input |
| 引脚 16 | RC1/CCP2 — PORTC bit 1 / CCP2 PWM/capture/compare |
| 引脚 17 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM/capture/compare |
| 引脚 18 | RC3/SCK/SCL — PORTC bit 3 / MSSP SPI clock / I2C clock |
| 引脚 19 | RC4/SDI/SDA — PORTC bit 4 / MSSP SPI data in / I2C data |
| 引脚 20 | RC5/SDO — PORTC bit 5 / MSSP SPI data out |
| 引脚 21 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| 引脚 22 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| 引脚 23 | RD0/PSP0 — PORTD bit 0 / parallel slave port bit 0 |
| 引脚 24 | RD1/PSP1 — PORTD bit 1 / parallel slave port bit 1 |
| 引脚 25 | RD2/PSP2 — PORTD bit 2 / parallel slave port bit 2 |
| 引脚 26 | RD3/PSP3 — PORTD bit 3 / parallel slave port bit 3 |
| 引脚 27 | RD4/PSP4 — PORTD bit 4 / parallel slave port bit 4 |
| 引脚 28 | RD5/PSP5 — PORTD bit 5 / parallel slave port bit 5 |
| 引脚 29 | RD6/PSP6 — PORTD bit 6 / parallel slave port bit 6 |
| 引脚 30 | RD7/PSP7 — PORTD bit 7 / parallel slave port bit 7 |
| 引脚 31 | VSS — Digital ground |
| 引脚 32 | VDD — +5V digital supply |
| 引脚 33 | RB0/INT0 — PORTB bit 0 / external interrupt 0 |
| 引脚 34 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| 引脚 35 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| 引脚 36 | RB3/CCP2 — PORTB bit 3 / CCP2 alternate output |
| 引脚 37 | RB4 — PORTB bit 4 / interrupt-on-change |
| 引脚 38 | RB5 — PORTB bit 5 / interrupt-on-change |
| 引脚 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| 引脚 40 | RB7/PGD — PORTB bit 7 / ICSP data |
| 引脚 41 | VDD — +5V digital supply |
| 引脚 42 | VSS — Digital ground |
| 引脚 43 | NC — Not connected (per datasheet - physically present, electrically no-connect on PIC18C452) |
| 引脚 44 | NC — Not connected (per datasheet - physically present, electrically no-connect on PIC18C452) |
典型应用
PIC18C452T-E/PT 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： PIC18C452T-E/PT ——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 | 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 |
关键差异点
- Same die as PIC18F452 with flash upgrade path （对比 PIC18F452-I/PT)
- Automotive extended temperature grade (-40C to +125C) （对比 PIC18C452-I/PT)
- Larger program memory than PIC16F predecessors （对比 PIC16F877-I/P)
设计说明
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.
合规信息
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.