2010-2012 Microchip Technology Inc.
DS41412F-page 69
PIC18(L)F2X/4XK22
5.0
MEMORY ORGANIZATION
There are three types of memory in PIC18 Enhanced
microcontroller devices:
Program Memory
Data RAM
Data EEPROM
As Harvard architecture devices, the data and program
memories
use
separate
buses;
this
allows
for
concurrent access of the two memory spaces. The data
EEPROM, for practical purposes, can be regarded as
a peripheral device, since it is addressed and accessed
through a set of control registers.
Additional detailed information on the operation of the
Flash program memory is provided in Section 6.0
Data
EEPROM
is
discussed separately in Section 7.0 “Data EEPROM
5.1
Program Memory Organization
PIC18 microcontrollers implement a 21-bit program
counter, which is capable of addressing a 2-Mbyte
program memory space. Accessing a location between
the upper boundary of the physically implemented
memory and the 2-Mbyte address will return all ‘0’s (a
NOP
instruction).
This family of devices contain the following:
PIC18(L)F23K22, PIC18(L)F43K22: 8 Kbytes of
Flash Memory, up to 4,096 single-word instructions
PIC18(L)F24K22, PIC18(L)F44K22: 16 Kbytes of
Flash Memory, up to 8,192 single-word instructions
PIC18(L)F25K22, PIC18(L)F45K22: 32 Kbytes of
Flash Memory, up to 16,384 single-word instruc-
tions
PIC18(L)F26K22, PIC18(L)F46K22: 64 Kbytes of
Flash Memory, up to 37,768 single-word
instructions
PIC18 devices have two interrupt vectors. The Reset
vector address is at 0000h and the interrupt vector
addresses are at 0008h and 0018h.
The program memory map for PIC18(L)F2X/4XK22
devices is shown in Figure 5-1. Memory block details
are shown in Figure 20-2.
相关PDF资料
PIC18F46K80-I/ML MCU PIC 64KB FLASH 44QFN
PIC32MX130F064D-I/TL IC MCU 32BIT 64KB FLASH 44-VTLA
PIC32MX130F064D-I/ML IC MCU 32BIT 64KB FLASH 44-QFN
PIC18LF46K80-I/ML MCU PIC ECAN 64KB FLASH 44QFN
AT89S51-24JI IC 8051 MCU 4K FLASH 44PLCC
AT89S51-24JC IC 8051 MCU 4K FLASH 44PLCC
AT89S51-24AI IC 8051 MCU 4K FLASH 44TQFP
AT89S51-24AC IC 8051 MCU 4K FLASH 44 TQFP
相关代理商/技术参数
PIC18F26J53-I/SO 功能描述:8位微控制器 -MCU 64KB Flash 4KB RAM 12MIPS nanoWatt RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC18F26J53-I/SP 功能描述:8位微控制器 -MCU 64KB FLASH 4KBRAM 12 MIPS nanoWatt RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC18F26J53-I/SS 功能描述:8位微控制器 -MCU 64KB 4KBRAM 12MIPS nanoWatt RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC18F26J53T-I/ML 功能描述:8位微控制器 -MCU USB 64KB Flash 4KB RAM 12 MIPS 12b ADC RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC18F26J53T-I/SO 功能描述:8位微控制器 -MCU USB 64KB Flash 4KB RAM 12 MIPS 12b ADC RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC18F26J53T-I/SS 功能描述:8位微控制器 -MCU USB 64KB Flash 4KB RAM 12 MIPS 12b ADC RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC18F26K20-E/ML 功能描述:8位微控制器 -MCU 64KBFlash 3968 RAM25 I/O 8B Family PbFree RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC18F26K20-E/SO 功能描述:8位微控制器 -MCU 64KBFlash 3968 RAM25 I/O 8B Family PbFree RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT