20ll04da1 Pacer Components, 20ll04da1 Datasheet - Page 8

• Manufacturer Part Number: 20ll04da1
• Description: Vacuum Fluorescent Display Module
• Manufacturer: Pacer Components

2*20 VF Display Module
4.9 Serial Data Input Stream
4.10 Connection Example
4.11 Outer Dimensions
4.12 Pattern Details
RXD
DTR
During MARK level of DTR, it is usually prohibited to receive the next following data. We recommend that a user
should check whether DTR output signal is going to SPACE level, before sending data.
TBUSY is the decoding and execution time of micro-controller in this module. Each control command and character
code have different T
Therefore a user must check the DTR signal before sending any data.
(Example of non parity, 8-bit data, 1 stop bit)
Power Supply
(+5~+24V
Signal Name
TXD
START
DC
(POS Terminal)
)
b
Host / DTE
0
D-sub 9P
Pin #3
b
Pin No. (Male)
1
BUSY
GND
V
interval. During power-on-reset and self test mode, the T
CC
D-sub 25P
T
SU
b
Pin #2
7
=20us/Min.
STOP
20LL04DA1 (Rev. 5.0)
Shield cable is recommended.
Page 8 of 41
T
BUSY
START
T
HOLD
=0us/Min.
b
0
Pin no.
b
Pin #2
Pin #6
Pin #8
1
8-pin Header (Male)
VFD Module / DCE
Unit: mm
Tolerances unless otherwise specified:
BUSY
-. Mounting Holes: +/-0.3
-. Length < 10.0: +/-0.5
-. Length > 10.0: +/-1.0
(20LL04DA1)
is set to MARK level.
Signal Name
RXD
GND
SPACE (+12V
MARK (-12V
SPACE
MARK
V
CC
DC
DC
)
)