Datasheet

AT89S53
4-240
Flash Programming and Verification Waveforms - Parallel Mode
Serial Downloading Waveforms
SERIAL CLOCK INPUT
SERIAL DATA INPUT
SCK/P1.7
MOSI/P1.5
MISO/P1.6
SERIAL DATA OUTPUT
0
1
2
3
4
5
6
7
MSB
MSB
LSB
LSB