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PIC12C508A-04/P 参数 Datasheet PDF下载

PIC12C508A-04/P图片预览
型号: PIC12C508A-04/P
PDF下载: 下载PDF文件 查看货源
内容描述: 8引脚, 8位CMOS微控制器 [8-Pin, 8-Bit CMOS Microcontrollers]
分类和应用: 微控制器和处理器外围集成电路光电二极管PC可编程只读存储器时钟
文件页数/大小: 113 页 / 1604 K
品牌: MICROCHIP [ MICROCHIP ]
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PIC12C5XX  
4.2  
Data Memory Organization  
FIGURE 4-2: PIC12C508, PIC12C508A AND  
PIC12CE518 REGISTER FILE  
MAP  
Data memory is composed of registers, or bytes of  
RAM. Therefore, data memory for a device is specified  
by its register file. The register file is divided into two  
functional groups: special function registers and  
general purpose registers.  
File Address  
INDF(1)  
00h  
TMR0  
PCL  
01h  
02h  
03h  
04h  
05h  
06h  
07h  
The special function registers include the TMR0  
register, the Program Counter (PC), the Status  
Register, the I/O registers (ports), and the File Select  
Register (FSR). In addition, special purpose registers  
are used to control the I/O port configuration and  
prescaler options.  
STATUS  
FSR  
OSCCAL  
GPIO  
The general purpose registers are used for data and  
control information under command of the instructions.  
For the PIC12C508, PIC12C508A and PIC12CE518,  
the register file is composed of 7 special function  
registers and 25 general purpose registers (Figure 4-  
2).  
General  
Purpose  
Registers  
For the PIC12C509, PIC12C509A, PIC12CR509A,  
and PIC12CE519 the register file is composed of 7  
special function registers, 25 general purpose  
registers, and 16 general purpose registers that may  
be addressed using a banking scheme (Figure 4-3).  
1Fh  
Note 1: Not a physical register. See Section 4.8  
4.2.1  
GENERAL PURPOSE REGISTER FILE  
The general purpose register file is accessed either  
directly or indirectly through the file select register FSR  
(Section 4.8).  
FIGURE 4-3: PIC12C509, PIC12C509A, PIC12CR509A AND PIC12CE519 REGISTER FILE MAP  
FSR<6:5>  
File Address  
00h  
00  
01  
INDF(1)  
TMR0  
PCL  
20h  
01h  
02h  
03h  
04h  
05h  
Addresses map  
back to  
addresses  
in Bank 0.  
STATUS  
FSR  
OSCCAL  
GPIO  
06h  
07h  
General  
Purpose  
Registers  
2Fh  
0Fh  
10h  
1Fh  
30h  
General  
Purpose  
Registers  
General  
Purpose  
Registers  
3Fh  
Bank 0  
Bank 1  
Note 1: Not a physical register. See Section 4.8  
DS40139E-page 14  
1999 Microchip Technology Inc.  
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