为什么我无法编程pic16f54？

我的任务是创建一个PIC16F54的编程适配器板，以便芯片可以使用带有MPLAB-X IPE的ICD 3进行编程（v2.15）。芯片将被编程出电路，目前有第三方程序员。我已经检查并复查，我正在正确地将ICD 3连接到PIC。我似乎无法让芯片编程。编程说明书上说需要两个电源，一个用于VDD（5.0V），一个用于VPP（12V）。我试图用ICD 3作为VDD上的5V电源，用单独的电源（12V）为VPP供电。至于程序/验证模式，ICSPCLK和ICSPDAT通过ICD 3中的内部下拉电阻被拉低，然后VDD管脚应该从VIL到VDD，通过ICD 3的5V电源。然后VPP从VIL到VIHH使用外部12V电源。我连接了ICD 3，然后打开12V电源并尝试编程，但它总是通知我“未能编程设备”。我附上了电路布线的示意图（对不起MS Paint）。我的电路丢失了什么东西还是布线错了？在MPLAB X IPE上需要更改一些设置吗？注意：由于私有原因，我无法与您共享代码，但是PIC使用第三方硬件正确地执行了程序。



      以下为原文

    I have been tasked with creating a programming adapter board for a PIC16F54 so the chips can be programmed using an ICD 3 with MPLAB-X IPE (v2.15). The chips will be programmed out of circuit, currently with a third party programmer. I've checked and rechecked that I am wiring the ICD 3 to the PIC correctly. I cannot seem to get the chip to program.

The programming specification sheet says two power supplies are needed, one for VDD (5.0V) and one for VPP (12V). I'm trying to use the ICD 3 for the 5V supply on VDD, and a separate power supply (12V) to power VPP.

As for program/verify mode, ICSPCLK and ICSPDAT are pulled low via internal pull-down resistors in the ICD 3, then the VDD pin should go from VIL to VDD, through the 5V supply from the ICD 3. Then VPP goes from VIL to VIHH using the external 12V supply. I connect the ICD 3 then turn on the 12V supply and try to program, but it always notifies me 'Failed to program device'. I've attached the schematic of how I am wiring the circuit (sorry for MS Paint).

Is my circuit missing something or wired wrong? Is there some setting I need to change on MPLAB X IPE? Any help would be appreciated.

Note: I am unable to share the code with you for proprietary reasons, but the PICs do program correctly with the 3rd party hardware.
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