參數(shù)資料
型號: PP-MOD1V2
英文描述: ISP INTERFACE MODULE
中文描述: ISP的接口模塊
文件頁數(shù): 27/48頁
文件大小: 3471K
代理商: PP-MOD1V2
ISP Interface Module Version 1.00 27/06/01
20
6.2 Microcontrollers requiring the SCK2 signal
The SCK2 signal may be required during programming for the microcontrollers listed in figure
37 below.
Microcontroller
Description
1
ATmega163(L)
The SCK2 signal is only required if the target device is
running on ‘Internal RC Oscillator’ and there is no external
oscillator on the Target System.
Applying the SCK2 signal to the microcontroller XTAL1 pin
allows the device to be programmed at a much higher SPI
frequency (e.g. 700 KHz) than would be possible when
running of the Internal Oscillator (150 kHz). This makes the
overall programming cycle much faster.
The Programming Project must swap from Internal Oscillator
to External Oscillator, program the device and then swap
back to Internal Oscillator.
The SCK2 signal may be required if the CKSEL bits have
been incorrectly programmed on this device.
2
ATtiny12
The SCK2 signal may be required if the CKSEL bits have
been incorrectly programmed on this device.
Figure 39
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