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10.Other features
10.1 CG RAM
The display module equips CG RAM as user's are 320 bit = (5x8 bit /char) x 8 chars of store
user definable character fonts. The character fonts consists of 5 x 7 dots with underline. The
number 1~36 corresponds to character fonts.
CG RAM address CG RAM data (character pattern)
Character code
DB5 DB4 DB3 DB2 DB1 DB0 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 0 0 * * * 1 2 3 4 5
0 0 0 0 0 1 * * * 6 7 8 9 10
0 0 0 0 1 0 * * * 11 12 13 14 15
0 0 0 0 1 1 * * * 16 17 18 19 20
0 0 0 1 0 0 * * * 21 22 23 24 25
0 0 0 1 0 1 * * * 26 27 28 29 30
0 0 0 1 1 0 * * * 31 32 33 34 35
00H
or
(08H)
0 0 0 1 1 1 * * * 0 0 36 0 0
0 0 1 0 0 0 * * * 1 2 3 4 5
0 0 1 0 0 1 * * * 6 7 8 9 10
0 0 1 0 1 0 * * * 11 12 13 14 15
0 0 1 0 1 1 * * * 16 17 18 19 20
0 0 1 1 0 0 * * * 21 22 23 24 25
0 0 1 1 0 1 * * * 26 27 28 29 30
0 0 1 1 1 0 * * * 31 32 33 34 35
01H
or
(09H)
0 0 1 1 1 1 * * * 0 0 36 0 0
REMARKS; "*": Don't care "0": Turned off "1": Turned on.
Dot assignment
1 2 3 4 5
6 7 8 9 10
11 12 13 14 15
16 17 18 19 20
21 22 23 24 25
26 27 28 29 30
31 32 33 34 35
36
Dot 36 is for underline.
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10.2 Power-on reset
Internal status of the module is initialized, when the controller detects the rising of power
supply up. The status are as follows:
1. Display clear
Fills the DD RAM with 20Hex (Space code).
During executing of "Display Clear" (Max 100 µs), the busy flag(BF) is "1".
2. Sets the address counter to 0H.
Sets the address counter to point the DD RAM.
3. Display ON/OFF
D=0: Display OFF
C=0: Cursor OFF
B=0: Blink OFF
4. Entry Mode Set
I/D=1 : Increment(+1)
S=0 : No display shift
5. Function Set
IF=1: 8-bit interface
6. Brightness Control
BR0=BR1=0: 100%
Remarks
There is a possibility that reset doesn't work by slow start power supply causes.
Therefore the initializing by commands needed.
10.3 CPU interface
The display module is capable to communicate with M68 bus systems such as 8-bit or 4-bit
data. The module is able to connected to bus of M68 type CPU.
10.3.1 4-Bit CPU interface
If 4-bit interface is used, the 8-bit instruction is written nibble by nibble: the high-order nibble
being written first, followed by low-order nibble. It is not necessary to check the busy flag
between writing separate nibbles of individual instructions.
See "9.7.1 Function Set Command" for more information.
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10.4 Jumper
Some jumpers are prepared on the PCB board, to set operating mode of the display module. A
soldering iron is required to short jumper.
No2 and No3 of jumper ‘JP2’ is used to reset of module.
You can reset the module by shorting No2 and No3 of the jumper ‘JP2’ for some interval
which is longer than 10us.
The following figure shows the location of each jumper.
Location
J
P
2
J
P
1
1
2
3
IC9
Parts Side
IC8
The following table shows the function of No 1 and No 2 of JP2.
CU40045-UW1J is no reset inputs from 12th hole of 16 through holes and M68 CPU bus
interface. Reset input signal is active when it is low.
Table of No 1 and No 2 of JP2 setting
No 1 and No 2 of JP2 No 12 of CN1
Open NC
short RESET
NC: no connection
JP1 is for factory use only.

CU40045-UW1J

Mfr. #:
Manufacturer:
Noritake
Description:
Vacuum Fluorescent Displays - VFD U-VERSION 40X4 137.4 X 23.2 DISP
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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