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PIC18F258-E/PQTP 数据表(PDF) 9 Page - Microchip Technology |
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PIC18F258-E/PQTP 数据表(HTML) 9 Page - Microchip Technology |
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9 / 402 page  © 2006 Microchip Technology Inc. DS41159E-page 7 PIC18FXX8 1.0 DEVICE OVERVIEW This document contains device specific information for the following devices: • PIC18F248 • PIC18F258 •PIC18F448 •PIC18F458 These devices are available in 28-pin, 40-pin and 44-pin packages. They are differentiated from each other in four ways: 1. PIC18FX58 devices have twice the Flash program memory and data RAM of PIC18FX48 devices (32 Kbytes and 1536 bytes vs. 16 Kbytes and 768 bytes, respectively). 2. PIC18F2X8 devices implement 5 A/D channels, as opposed to 8 for PIC18F4X8 devices. 3. PIC18F2X8 devices implement 3 I/O ports, while PIC18F4X8 devices implement 5. 4. Only PIC18F4X8 devices implement the Enhanced CCP module, analog comparators and the Parallel Slave Port. All other features for devices in the PIC18FXX8 family, including the serial communications modules, are identical. These are summarized in Table 1-1. Block diagrams of the PIC18F2X8 and PIC18F4X8 devices are provided in Figure 1-1 and Figure 1-2, respectively. The pinouts for these device families are listed in Table 1-2. TABLE 1-1: PIC18FXX8 DEVICE FEATURES Features PIC18F248 PIC18F258 PIC18F448 PIC18F458 Operating Frequency DC – 40 MHz DC – 40 MHz DC – 40 MHz DC – 40 MHz Internal Program Memory Bytes 16K 32K 16K 32K # of Single-Word Instructions 8192 16384 8192 16384 Data Memory (Bytes) 768 1536 768 1536 Data EEPROM Memory (Bytes) 256 256 256 256 Interrupt Sources 17 17 21 21 I/O Ports Ports A, B, C Ports A, B, C Ports A, B, C, D, E Ports A, B, C, D, E Timers 4 4 4 4 Capture/Compare/PWM Modules 1 1 1 1 Enhanced Capture/Compare/ PWM Modules —— 1 1 Serial Communications MSSP, CAN, Addressable USART MSSP, CAN, Addressable USART MSSP, CAN, Addressable USART MSSP, CAN, Addressable USART Parallel Communications (PSP) No No Yes Yes 10-bit Analog-to-Digital Converter 5 input channels 5 input channels 8 input channels 8 input channels Analog Comparators No No 2 2 Analog Comparators VREF Output N/A N/A Yes Yes Resets (and Delays) POR, BOR, RESET Instruction, Stack Full, Stack Underflow (PWRT, OST) POR, BOR, RESET Instruction, Stack Full, Stack Underflow (PWRT, OST) POR, BOR, RESET Instruction, Stack Full, Stack Underflow (PWRT, OST) POR, BOR, RESET Instruction, Stack Full, Stack Underflow (PWRT, OST) Programmable Low-Voltage Detect Yes Yes Yes Yes Programmable Brown-out Reset Yes Yes Yes Yes CAN Module Yes Yes Yes Yes In-Circuit Serial Programming™ (ICSP™) Yes Yes Yes Yes Instruction Set 75 Instructions 75 Instructions 75 Instructions 75 Instructions Packages 28-pin SPDIP 28-pin SOIC 28-pin SPDIP 28-pin SOIC 40-pin PDIP 44-pin PLCC 44-pin TQFP 40-pin PDIP 44-pin PLCC 44-pin TQFP |
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