zinahe
Newbie level 6
pcd8544 5 rows
Hey everybody,
I've encountered a very strange problem while trying to interface to a Nokia 3310 LCD using my parallel port. Everything seems to be working, except instead of 6 rows of 8 pixels high, I'm getting 5 rows of 8 pixels high and two messed-up rows of 5 pixels and 3 pixels high at the top and bottom of the display. It looks as if the whole addressing scheme is shifted upwards by five pixels
I have done the following checks:
- I'm running the LCD with 3.3V
- I've studied all the signals using a logic analyzer and confirmed that they are according to the specs on the datasheet
- I've replaced two additional display units with identical results
I really appreciate any help I can get.
[edit] I didn't mention that I have connected the SCE (Serial Chip Enable) terminal directly to the ground, so that the chip is always enabled. [/edit]
Zinahe A
Hey everybody,
I've encountered a very strange problem while trying to interface to a Nokia 3310 LCD using my parallel port. Everything seems to be working, except instead of 6 rows of 8 pixels high, I'm getting 5 rows of 8 pixels high and two messed-up rows of 5 pixels and 3 pixels high at the top and bottom of the display. It looks as if the whole addressing scheme is shifted upwards by five pixels
I have done the following checks:
- I'm running the LCD with 3.3V
- I've studied all the signals using a logic analyzer and confirmed that they are according to the specs on the datasheet
- I've replaced two additional display units with identical results
I really appreciate any help I can get.
[edit] I didn't mention that I have connected the SCE (Serial Chip Enable) terminal directly to the ground, so that the chip is always enabled. [/edit]
Zinahe A