LCD 1602 or HD44780 mistake connect pin 1 to 5V

[eva_hk]

hi guys,I'm learning ee. I mistaken by connect HD44780's Gound pin to 5V power and the Chip heat up greately, Would that destroy it? Since from the beginning I never make it show any char at all that I don't know whether it is ruined or not?
I'm using LCD module on breakboard and 5V power from USB charger. I'm just trying to make it show any char by connecting LCD pins to 5V or Gnd. pin 1 to G,pin2 to 5V, pin 4 float, pin 5 to Gnd, pin 6 to 5V....would that work?

 

[Harald Kapp]

Would that destroy it? Since from the beginning I never make it show any char at all that I don't know whether it is ruined or not?

99.9 %: yes

I'm using LCD module on breakboard and 5V power from USB charger. I'm just trying to make it show any char by connecting LCD pins to 5V or Gnd. pin 1 to G,pin2 to 5V, pin 4 float, pin 5 to Gnd, pin 6 to 5V....would that work?

Most probably not, depending on the module construction. It is typical for such modules to be controlled by a series of commands and data via either a serial or a parallel connection to a microcontroller.
Check the module's datasheet for details.

 

[Minder]

Google search for the 2 part LCD PDF's by Julyan ILett.
They show how to do a static test of the HD module.
M.

 

[eva_hk]

static test? good idea if there's one.
how?

I read thru pdf not found.

 

[eva_hk]

Does anyone know what happens when LCD module's ground pin is connected to 5V?
Is it short circuit?
for more than 2 mins, the ic heat up to hurting high temperature but there's no smell of burnning plastic and the backlight LED is still working.

 

[eva_hk]

For an ordinary ic, say 555, if G pin is connected to 5V, when will happen?

 

[Minder]

static test? good idea if there's one.
how?

I read thru pdf not found.

Part 1 Page 5!
M.

 

[(*steve*)]

For an ordinary ic, say 555, if G pin is connected to 5V, when will happen?

It depends on what the other pins are connected to.

Reverse polarity on Vcc and ground, and the Co gets hot, probably dead chip.