我并不惊讶,古董设备的数据表与最近的和活跃的图片格式不同。许多较新的PIC16设备(如PIC16F68),具有相同的编程引脚,所以从引脚4开始,你有MCLR/VPP,然后顺时针方向,你有Vdd的PIN 1,VSS的PIN 20(最高数字引脚),SPDAT的PIN 19,SPCK的18。这遵循与PIKIT SIP连接器相同的引脚顺序。似乎18引脚设备(如PIC16F628 A)具有与PIC16F84A相同的引脚,这使得从旧处理器升级到新处理器更容易。我不知道您所说的Vdd不需要什么。VDD意味着CMOS器件的功率轨(具有漏极),而Vcc应用于具有收集器的双极器件。
以上来自于百度翻译
以下为原文
I'm not surprised that the data sheet for an antique device differs in format from those for more recent and active
PICs. Many newer
PIC16 devices (such as
PIC16F684), have the same pins for programming, so starting at pin
4 you have
MCLR/Vpp, then going clockwise you have pin
1 for
Vdd, pin
20 (the highest number pin) for
Vss, pin
19 for
SPDAT, and
18 for
SPCLK. This follows the same pin order as the
PICkit SIP connector. It seems that
18 pin devices (such as
PIC16F628A) have the same pinout as
PIC16F84A. This makes upgrading from old to new processors easier.
I don't know what you mean about
Vdd not needed.
Vdd signifies the power rail for CMOS devices (which have drains), while
Vcc applies to bipolar devices which have collectors.
我并不惊讶,古董设备的数据表与最近的和活跃的图片格式不同。许多较新的PIC16设备(如PIC16F68),具有相同的编程引脚,所以从引脚4开始,你有MCLR/VPP,然后顺时针方向,你有Vdd的PIN 1,VSS的PIN 20(最高数字引脚),SPDAT的PIN 19,SPCK的18。这遵循与PIKIT SIP连接器相同的引脚顺序。似乎18引脚设备(如PIC16F628 A)具有与PIC16F84A相同的引脚,这使得从旧处理器升级到新处理器更容易。我不知道您所说的Vdd不需要什么。VDD意味着CMOS器件的功率轨(具有漏极),而Vcc应用于具有收集器的双极器件。
以上来自于百度翻译
以下为原文
I'm not surprised that the data sheet for an antique device differs in format from those for more recent and active
PICs. Many newer
PIC16 devices (such as
PIC16F684), have the same pins for programming, so starting at pin
4 you have
MCLR/Vpp, then going clockwise you have pin
1 for
Vdd, pin
20 (the highest number pin) for
Vss, pin
19 for
SPDAT, and
18 for
SPCLK. This follows the same pin order as the
PICkit SIP connector. It seems that
18 pin devices (such as
PIC16F628A) have the same pinout as
PIC16F84A. This makes upgrading from old to new processors easier.
I don't know what you mean about
Vdd not needed.
Vdd signifies the power rail for CMOS devices (which have drains), while
Vcc applies to bipolar devices which have collectors.
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