PD17202AGF-011_15 Datasheet, PDF (19/30 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLER WITH LCD CONTROLLER/DRIVER AND KEY SCAN CIRCUIT FOR FPC (FRONT PANEL CONTROLLER)

(3) On execution of display data input
µPD17202AGF-011
CLOCK
41 or 40 clocks + 4 clocks
Clock
DATA
LOAD
BLANK
Display data + command
Valid
2 ms MIN.
70 µs MIN.
Input
data
2 ms MIN.
Less than 2 ms
Invalid
Valid
Invalid
BLANK pin
Valid :
Invalid :
The device operates within 50 µs after the value of the BLANK pin has been changed.
If the clock is input to the CLOCK pin, however, the higher the clock frequency, the slower
the operation (example: operates within 1 ms at 43 kHz).
The device does not operate even if the value of the BLANK pin has been changed. If
the value of the pin is changed during this period, the device operates after the pin value
has become valid.
(4) On execution of key data output
CLOCK
DATA
LOAD
INT
4 clocks
Command
30 clocks
2 ms MIN.
70 µs MIN.
Key data
1 clock
100 µs MIN.
Input
data
70 µs MIN.
2 ms MIN.
Less than 2 ms
Less than 100 µs
BLANK
Valid
Invalid
Valid
Invalid
Invalid
BLANK pin
Valid :
Invalid :
The device operates within 50 µs after the value of the BLANK pin has been changed.
If the clock is input to the CLOCK pin, however, the higher the clock frequency, the slower
the operation (example: operates within 1 ms at 43 kHz).
The device does not operate even if the value of the BLANK pin has been changed. If
the value of the pin is changed during this period, the device operates after the pin value
has become valid.
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