volkanaft (31.08.2005 15:44, просмотров: 1) ответил Al Volovich на Я не пойму, какой обратный ход у ЖКИ?
из описания SED1335 Display flicker may occur if there is more than one
consecutive access that cannot be ignored within a frame.
The microprocessor can minimize this either by performing
these accesses intermittently, or by continuously
checking the status flag (D6) and waiting for it to become
HIGH.
11.2.1. Display status indication output
When CS, A0 and RD are LOW, D6 functions as the
display status indication output. It is HIGH during the
TV-mode vertical retrace period or the LCD-mode horizontal
retrace period, and LOW, during the period the
controller is writing to the display. By monitoring D6 and
writing to the data memory only during retrace periods,
the display can be updated without causing screen flicker.
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