GU128X64-800B
3
6. Description of Bus and Signals
This module has serial and 2 types of parallel interface.
Type of interface can be selected by jumper settings. Refer to 11 on page # 18 for details.
6.1 Parallel Interface
Data Line Function
D0 ～ D7
Data Bus (Input / Output)
WR (R/W) Parallel #1: Write Signal, Parallel #2: R/W (Input)
RD (ENCK) Parallel #1: Read Signal, Parallel #2: ENCK (Input)
CSS
Chip Select (Input)
C/D Command / Data Select Signal (Input)
C/D = "1" … Command C/D = "0" … Data
FRP
Frame Pulse Signal (Output)
RESET
RESET="0"… Reset (Input)
Vcc Power Supply
GND Ground
6.2 Serial Interface
Data Line Function
RXD Serial Input
TXD Serial Output
SCK
Clock (Input)
CSS Chip Select (Input)
C/D Command / Data Select Signal (Input)
C/D = "1" … Command C/D = "0" … Data
FRP Frame Pulse Signal (Output)
RESET
RESET="0"… Reset (Input) Active Low
Vcc Power Supply
GND Ground
7. Block Diagram
D0
～
D7
RD(ENCK)
WR(R/W)
C/D
CSS
FRP
Parallel
Controller
Graphic
RAM
Protection
Circuit
Display Data
Writing Signal
Operation
Detection Signal
Scan Control
Detection Signal
BD-VFD
Vcc
GND
DC/DC
Converter
Filament(AC)
Anode & Grid(DC)
Serial
C/D
SCK
RXD
TXD
:
ara
e
CSS
RESET
FRP
RESET
