Description

Electronic Component Model: PIC18CF252

Product Category: IC Chips

This document contains device specific information for the following four devices: PIC18C242, PIC18C252, PIC18C442, PIC18C452.

These devices come in 28-pin and 40-pin packages. The 28-pin devices do not have a Parallel Slave Port (PSP) implemented and the number of Analog-to Digital (A/D) converter input channels is reduced to 5. An overview of features is shown in Table 1-1.

The following two figures are device block diagrams sorted by pin count: 28-pin for Figure 1-1 and 40-pin for Figure 1-2. The 28-pin and 40-pin pinouts are listed in Table 1-2 and Table 1-3, respectively.

High Performance RISC CPU:

• C compiler optimized architecture/instruction set - Source code compatible with the PIC16CXX instruction set
• Linear program memory addressing to 2 Mbytes
• Linear data memory addressing to 4 Kbytes
• Up to 10 MIPs operation: DC - 40 MHz osc./clock input, 4 MHz - 10 MHz osc./clock input with PLL active
• 16-bit wide instructions, 8-bit wide data path
• Priority levels for interrupts
• 8x8 Single Cycle Hardware Multiplier

Peripheral Features:

• High current sink/source 25 mA/25 mA
• Three external interrupt pins
• Timer0 module: 8-bit/16-bit timer/counter with 8-bit programmable prescaler
• Timer1 module: 16-bit timer/counter
• Timer2 module: 8-bit timer/counter with 8-bit period register (time-base for PWM)
• Timer3 module: 16-bit timer/counter
• Secondary oscillator clock option - Timer1/Timer3
• Two Capture/Compare/PWM (CCP) modules. CCP pins that can be configured as: Capture input, Compare, PWM output
• Max. PWM freq. @: 8-bit resolution = 156 kHz, 10-bit resolution = 39 kHz
• Master Synchronous Serial Port (MSSP) module. Two modes of operation: 3-wire SPI, I2C master and slave mode
• Addressable USART module: Supports interrupt on Address bit
• Parallel Slave Port (PSP) module

Analog Features:

• Compatible 10-bit Analog-to-Digital Converter module (A/D) with: Fast sampling rate, Conversion available during SLEEP, DNL = ±1 LSb, INL = ±1 LSb
• Programmable Low Voltage Detection (LVD) module: Supports interrupt-on-low voltage detection
• Programmable Brown-out Reset (BOR)

Special Microcontroller Features:

• Power-on Reset (POR), Power-up Timer (PWRT) and Oscillator Start-up Timer (OST)
• Watchdog Timer (WDT) with its own on-chip RC oscillator for reliable operation
• Programmable code protection
• Power saving SLEEP mode
• Selectable oscillator options including: 4X Phase Lock Loop (of primary oscillator), Secondary Oscillator (32 kHz) clock input
• In-Circuit Serial Programming (ICSP) via two pins

CMOS Technology:

• Low power, high speed EPROM technology
• Fully static design
• Wide operating voltage range (2.5V to 5.5V)
• Industrial and Extended temperature ranges
• Low power consumption

Specifications and features

• Device Overview: PIC18CF252
• Product Category: IC Chips
• Number of devices: 4
• Packages available: 28-pin and 40-pin
• No Parallel Slave Port (PSP) in 28-pin devices
• Reduced Analog-to-Digital (A/D) converter input channels in 28-pin devices
• High Performance RISC CPU
• Peripheral Features: High current sink/source, external interrupt pins, timer modules, Capture/Compare/PWM (CCP) modules, Master Synchronous Serial Port (MSSP) module, Addressable USART module, Parallel Slave Port (PSP) module
• Analog Features: 10-bit Analog-to-Digital Converter module (A/D), Programmable Low Voltage Detection (LVD) module, Programmable Brown-out Reset (BOR)
• Special Microcontroller Features: Power-on Reset (POR), Power-up Timer (PWRT), Oscillator Start-up Timer (OST), Watchdog Timer (WDT), Programmable code protection, Power saving SLEEP mode, Selectable oscillator options, In-Circuit Serial Programming (ICSP)
• CMOS Technology: Low power, high speed EPROM technology, Fully static design, Wide operating voltage range, Industrial and Extended temperature ranges, Low power consumption

Application Scenarios

The PIC18CF252 is suitable for various electronic applications that require a high-performance microcontroller with a wide range of peripheral features. Some possible application scenarios include:

• Industrial control systems
• Consumer electronics
• Automotive electronics
• Medical devices
• Communications systems

Comparison

• High performance RISC CPU with optimized architecture/instruction set
• Multiple peripheral features including high current sink/source, timer modules, Capture/Compare/PWM (CCP) modules, and more
• Analog features such as a 10-bit Analog-to-Digital Converter module (A/D)
• Special microcontroller features like Power-on Reset (POR) and Power-saving SLEEP mode
• CMOS technology for low power consumption and wide operating voltage range

• 28-pin devices do not have a Parallel Slave Port (PSP) implemented and have reduced Analog-to-Digital (A/D) converter input channels
• Limited availability of packages