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4-4.
MENU CONTROL SECTION
Menu control consists of IC201(microcomputer) mainly and processes the following.
4-4-1.
Watch of Various Keys
1C201 watches various keys of front panel and door panel. Keys are all L active.
Example) PRINT key
1C201 pin 64
PRINT key condition
L
Pushed
H
Not pushed
4-4-2. LCD (Liquid Crystal Display) Control
1C201 displays menu and message on the LCD according to key operation. Main terminal functions of LCD are as follows.
DB(7:0)
Input and output data bus
Vied+
LED power supply voltage
Vled—
4-4-3.
EEPROM Control
IC201 loads or saves set menu contents to EEPROM (IC202).
Main terminal functions of EEPROM are as follows.
E(2:0)
ran
E(2:0)
Address input
EEPROM
SCLK
Serial CLK
WMODE
1C202
4-4-4.
D/A Converter Control
1C201 outputs BRIGHTNESS, CONTRAST and voltage level of LCD character density by controlling A/D converter
(IC203). Main terminal functions of A/D converter are as follows.
Serial data output
Serial data input
Serial CLK
D/A output start
Analog output
4-8
UP-980(UC)
UP-980CE(C E)
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