欢迎访问ic37.com |
会员登录 免费注册
发布采购

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 ]
 浏览型号PIC12C508A-04/P的Datasheet PDF文件第42页浏览型号PIC12C508A-04/P的Datasheet PDF文件第43页浏览型号PIC12C508A-04/P的Datasheet PDF文件第44页浏览型号PIC12C508A-04/P的Datasheet PDF文件第45页浏览型号PIC12C508A-04/P的Datasheet PDF文件第47页浏览型号PIC12C508A-04/P的Datasheet PDF文件第48页浏览型号PIC12C508A-04/P的Datasheet PDF文件第49页浏览型号PIC12C508A-04/P的Datasheet PDF文件第50页  
PIC12C5XX  
8.12  
In-Circuit Serial Programming  
FIGURE 8-16: TYPICAL IN-CIRCUIT SERIAL  
PROGRAMMING  
The PIC12C5XX microcontrollers with EPROM pro-  
gram memory can be serially programmed while in the  
end application circuit. This is simply done with two  
lines for clock and data, and three other lines for power,  
ground, and the programming voltage. This allows cus-  
tomers to manufacture boards with unprogrammed  
devices, and then program the microcontroller just  
before shipping the product. This also allows the most  
recent firmware or a custom firmware to be pro-  
grammed.  
CONNECTION  
To Normal  
Connections  
External  
Connector  
Signals  
PIC12C5XX  
+5V  
0V  
VDD  
VSS  
VPP  
MCLR/VPP  
The device is placed into a program/verify mode by  
holding the GP1 and GP0 pins low while raising the  
MCLR (VPP) pin from VIL to VIHH (see programming  
specification). GP1 becomes the programming clock  
and GP0 becomes the programming data. Both GP1  
and GP0 are Schmitt Trigger inputs in this mode.  
GP1  
GP0  
CLK  
Data I/O  
VDD  
After reset, a 6-bit command is then supplied to the  
device. Depending on the command, 14-bits of pro-  
gram data are then supplied to or from the device,  
depending if the command was a load or a read. For  
complete details of serial programming, please refer to  
the PIC12C5XX Programming Specifications.  
To Normal  
Connections  
A typical in-circuit serial programming connection is  
shown in Figure 8-16.  
DS40139E-page 46  
1999 Microchip Technology Inc.  
 复制成功!