参数资料
型号: AT80C51RA2-SLSUM
厂商: Atmel
文件页数: 62/84页
文件大小: 0K
描述: IC 8051 MCU ROMLESS 44PLCC
标准包装: 972
系列: 80C
核心处理器: 8051
芯体尺寸: 8-位
速度: 40/20MHz
连通性: UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 32
程序存储器类型: ROMless
RAM 容量: 512 x 8
电压 - 电源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 44-LCC(J 形引线)
包装: 管件
2007-2012 Microchip Technology Inc.
DS70292G-page 67
dsPIC33FJ32GP302/304, dsPIC33FJ64GPX02/X04, AND dsPIC33FJ128GPX02/X04
FIGURE 4-9:
DATA ACCESS FROM PROGRAM SPACE ADDRESS GENERATION
0
Program Counter
23 bits
1
PSVPAG
8 bits
EA
15 bits
Program Counter(1)
Select
TBLPAG
8 bits
EA
16 bits
Byte Select
0
1/0
User/Configuration
Table Operations(2)
Program Space Visibility(1)
Space Select
24 bits
23 bits
(Remapping)
1/0
0
Note 1: The Least Significant bit (LSb) of program space addresses is always fixed as ‘0’ to maintain
word alignment of data in the program and data spaces.
2: Table operations are not required to be word aligned. Table read operations are permitted
in the configuration memory space.
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