OCinside.de PC Forum > Antworten in LCD Display 40x2

Review of postings for LCD Display 40x2 (the latest posts first)
ocinside	Erstellt: 11:13 am 4. Dez. 2004
	Yes, this looks great (except that you've no backlight) and the description of the second "E" signal is only available with some ! 40x4 or 40x2 displays, so don't care about it. BTW thanks for your flowers and good luck
Nimbus	Erstellt: 17:45 am 3. Dez. 2004
	Hello! I just got a 2x40 char LCD Display (Model DMC402 with Bezel Uses the standard controller HD44780) I just wonder if I have to make any changes in your "new soldering guides for 20x2 and 20x4 LC displays" to make ite work, or if I just can and solder away as the guide tells me (great how-to by the way) Thanks for any help! / Johan This is what the manual for the Display tells me (if you need more info, just tell me): Pin Number Symbol 1 Vss 2 Vcc 3 Vee 4 RS 5 R/W 6 E 7 DB0 8 DB1 9 DB2 10 DB3 11 DB4 12 DB5 13 DB6 14 DB7 Pin Descriptions: DB4 ~ DB7 Input/Output MPU 4 lines of high order data bus. Bi-directional transfer of data between MPU and module is done through these lines. Also DB7 can be used as a busy flag. These lines are used as data in 4 bit operation. DB0 ~ DB3 Input/Output MPU 4 lines of low order data bus. Bi-directional transfer of data between MPU and module is done through these lines. In 4 bit operation, these are not used and should be grounded. E Input MPU Enable - Operation start signal for data read/write. R/W Input MPU Signal to select Read or Write “0”: Write “1”: Read RS Input MPU Register Select “0”: Instruction register (Write) : Busy flag; Address counter (Read) “1”: Data register (Write, Read) Vee Power Supply Terminal for LCD drive power source. Vcc Power Supply +5V Vss Power Supply 0V (GND) E1 Input MPU Enable 1 - Operation start signal for data Read/Write of upper 2 lines. Applicable to DMC 40457 series only. [not mine!] E2 Input MPU Enable 2 - Operation start signal for data Read/Write of lower 2 lines. Applicable to DMC 40457 series only. [not mine!]