●DEVICE OVERVIEW
●This document contains device specific information for the following four devices:
●1\. PIC18C242
●2\. PIC18C252
●3\. PIC18C442
●4\. 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
●• 8 x 8 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: capture is 16-bit, max. resolution 6.25 ns (TCY/16)
● - Compare is 16-bit, max. resolution 100 ns (TCY)
● - PWM output: PWM resolution is 1- to 10-bit.
● 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 (supports all 4 SPI modes)
● - 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
