参数资料
型号: PP-MOD1V2
英文描述: ISP INTERFACE MODULE
中文描述: ISP的接口模块
文件页数: 29/48页
文件大小: 3471K
代理商: PP-MOD1V2
ISP Interface Module Version 1.00 27/06/01
22
6.4 Enabling the PIM SCK2 Output Signal with a PPM
The following section details how to use the SCK2 signal generator on the PIM with a PPM
(PRO101/104/108) programmer.
Fig 42 – PPM connected to Target System via PIM producing SCK2 signal
To enable the PIM SCK2 signal:
Set the PIM jumper LK3 to position 2-3.
Connect the SCK2 signal from the PIM to the XTAL1 pin of your target microcontroller.
In your EQTools project, select the <Pre-Program State Machine> tab and select the
<AVR + PPM Int Module Rev2 + SCK Osc>
state machine and then re-compile your
project.
If you now run the programming project, the desired frequency should now be output on
the PIM SCK2 pin of J1 and J5 during the programming operation.
The SCK2 signal is gated by the PPM Output 1 signal (OP1) and so will only be present
during a programming cycle and will be OFF at all other times.
If you wish to manually ENABLE/DISABLE the SCK2 output for test purposes, this can
be achieved by asserting pin 3 of IC U3 HIGH.
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