Datasheet

ANAG VISION
ANAG VISION
THIS DATA SHEET IS FOR REFERENCE ONLY.
THE COLOR OF THE DISPLAY MAY VARY SLIGHTLY DEPENDING ON DIFFERENT PRODUCTION
LOTS AND AMBIENT LIGHT. WE RESERVE THE RIGHT TO CHANGES AND IMPROVMENTS WITHOUT
PRIOR NOTICE.
ΤΟΟΣΕ
ΙΥΝΙ
CONNECTING AV CHARACTER MODULES
POWER SUPPLY / INTERFACE TO MCU / INFOMATION ON CHARACTER IC AND LED BACKLIGHT
POWER SUPPLY FOR LCD MODULE
1.SINGLE SUPPLY VOLTAGE TYPES (INTERNAL N.V.)
2. DUAL SUPPLY VOLTAGE TYPES
+5V
+5V
VDD
LCM V0
VSS
VDD
LCM V0
VSS
VDD
VDD
GNDGND
VR
VR
VDD-V0
VEE
VDD-V0: LCD DRIVING VOLTAGE
R: 10K - 20K
VDD-V0: LCD DRIVING VOLTAGE
R: 10K - 20K
VDD-V0
D0-D7
R/W
LCM
RS
E
ADDRESS
LATCH
DB4-DB7
R/W
RS
LCM
E
3. INTERFACE TO 4-BIT MPU (HMCS43C)
1. INTERFACE TO Z-80 MPU
2. INTERFACE TO 6800 MCU
4. INTERFACE TO 8051 MCU
INTERFACE TO MCU
AD
A1-A7
M
U
X
C
D
R
Q
Z80
D0-D7
IRQ
RD
WR
RS
E
LCM
R/W
D0-D7
D0-D7 D0-D7
R/W
R/W
LCM
6800 MPU
RSRS
O 2
VMA
ADDRESS
DECODER
E
A15
A14
A13
AD0-AD7
8051 MPU
ALE
WR
RD
A15
A14
A13
HMCS43C
D15
D14
D13
R10-R13
ADDRESS
DECODER
CHARACTER BLOCK DIAGRAM AND LED BACKLIGHT
THERE ARE THREE POSSIBILITIES TO USE LED BACKLIGHT IN ANAG VISION CHARACTER MODULES.
DRIVING THE LED THROUGH A CURRENT LIMITING RESISTANCE (RA) WHICH IS ALREADY
INCLUDED IN THE LCM, BY EXTERNAL 5V TO J1 AND J2 BETWEEN PIN 1 AND PIN 2.
PROVIDING 5V BY PIN 15 AND 16 OF THE INTERFACE TO DRIVE THE LED, J15 AND J16 MUST BE
SHORTENED AND RA = 3~7 OHMS IN THIS CASE.
PROVIDING 4.2V BY DIRECT CONNECTION TO THE LED THROUGH A CURRENT LIMITING RESISTANCE.
USAGE OF LED BACKLIGHT
CHARACTER BLOCK IC DIAGRAM
DATA REGISTER (DR) IS REGULARLY USED FOR TEMPORARY STORAGE OF DATA READ/WRITE
FROM/INTO DD RAM AND CG RAM.
INSTRUCTION REGISTER (IR) IS USED FOR STORING INSTRUCTION CODES AND ADDRESS
INFORMATION OF THE DISPLAY DATA (DD) RAM AND CHARACTER GENERATOR (CG) RAM.
BUSY FLAG (BF) IS "1" WHEN THE LCM IS IN INTERNAL OPERATION AND CANNOT ACCEPT THE
NEXT INSTRUCTION OR DATA.
CHARACTER GENERATOR (CG) ROM GENERATES CHARACTER PATTERNS FROM 8-BIT CODE.
THE CG ROM PROVIDES 192 CHARACTER PATTERNS.
CHARACTER GENERATOR (CG) RAM ALLOWES THE USER TO DESIGN AND REWRITE
CHARACTER PATTERNS ACCORDING THE PROGRAM.
ADDRESS COUNTER (AC) IS USED TO GIVE THE ADDRESS INFORMATION OF THE DD RAM AND
CG RAM.
DISPLAY DATA (DD) RAM IS USED TO STORE THE DISPLAY DATA EXPRESSED BY 8-BIT
CHARACTER CODE. THE CAPACITY IS 80 X 8 BITS AND 80 CHARACTERS CAN BE STORED.
CURSOR AND BLINK CONTROL GENERATES THE CURSOR AND BLINK.
D0-D3
R/W
RS
LCM
E
D4-D7
VDD
V0
VSS
I/O
B
U
F
F
E
R
BUSY
FLAG
DR
IR
D
E
C
O
D
E
R
AC
DD RAM
CG
RAM
P TO S REGISTER
CURSOR
AND
BLINK
CKT
COM
DRIVING
CIRCUIT
TIMING CONTROL CIRCUIT
CG
RAM
DRIVIN CIRCUIT
POWER SUPPLY FOR LCD MODULE/INTERFACE TO MCU
CHARACTER BLOCK DIAGRAM AND LED BACKLIGHT