STC micro STC8A8K64D4 Series - Page 62

STC8A8K64D4 Series Manual
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5.1.5 Download using U8-Mini tool, Support ISP online and offline download,
also support emulation
47u
104
P0.3
P0.4
P0.5
P0.6
P0.7
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
AGnd
AVref
AVcc
P5.4
Vcc
P5.5
Gnd
P0.2
P0.1
P0.0
P2.7
P2.6
P2.5
P2.4
P2.3
P2.2
P2.1
P2.0
P4.1
P3.7
P3.6
P3.5
P3.4
P3.3
P3.2
P3.1
P3.0
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2
3
4
5
6
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8
9
10
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STC8A8K64D4
Connect
to PC
U8W Mini: STC USB type
Offline/Online Programming Tool
ISP download steps:
1. Connect the U8-Mini and the target chip according to the connection method shown in the figure.
2. Click the "Download/Program" button in the STC-ISP download software
3. Start ISP download
Note: If the U8-Mini is used to power the target system, the total current of the target system cannot be greater than
200mA, otherwise the download will fail.
Note: At present, it has been found that when using the USB cable for ISP download, the USB cable is too thin and the
voltage drop on the USB cable is too large, resulting in insufficient power supply during the ISP download. Therefore,
please make sure to use the booster USB cable for ISP download.
To emulate using the U8-Mini, you must set the U8-Mini to pass-through mode firstly. The method for U8W/U8W-Mini to
realize the USB-to-serial pass-through mode is as follows:
1. Firstly, the U8W/U8W-Mini firmware must be upgraded to v1.37 and above.
2. After the U8W/U8W-Mini is powered on, it is in the normal download mode. At this time, press and hold the Key1
(download) button on the tool and do not release it, then press the Key2 (power) button again, and then release the Key2
(power) button. Release the Key1 (download) button again, and the U8W/U8W-Mini will enter the USB-to-serial pass-through
mode. (Press Key1Press Key2Release Key2Release Key1).
3. The U8W/U8W-Mini tool that enters the pass-through mode is just a simple USB to serial port and does not have the offline
download function. If you need to restore the original function of the U8W/U8W-Mini, you only need to press the Key2
(power) button again.