st2032a Sitronix Technology Corporation, st2032a Datasheet - Page 35

• Manufacturer Part Number: st2032a
• Description: 8 Bit Microcontroller With 32k Bytes Rom
• Manufacturer: Sitronix Technology Corporation

Ver 2.4
Address Name
$03A
Bit 7: LPWR : LCD power ON/OFF bit
Bit 6: BLANK : LCD display ON/OFF bit
Bit 5: REV : LCD display reverse
Bit 4: SCAN : LCD segment keyboard-scan function
Bit 3~0: CTR[3~0] : LCD contrast control
LCTL
1 = LCD power OFF
0 = LCD power ON
1 = Disable LCD display (Common line is still scanning)
0 = Enable LCD display
1 = Reverse display
0 = Normal display
1 = Enable keyboard-scan signal in LCD waveforms
0 = Disable keyboard-scan signal
00xx = contrast level
0100 = contrast level
0101 = contrast level
0110 = contrast level
0111 = contrast level
1000 = contrast level
1001 = contrast level
1010 = contrast level
1011 = contrast level
1100 = contrast level
1101 = contrast level
1110 = contrast level
1111 = contrast level
R/W
R/W
Frame Rate = 64Hz
LPWR
Bit 7
12
12 (maximum)
11
10
9
8
7
6
5
4
3
2
1 (minimum)
TABLE 15-3 LCD Control Register (LCTL)
BLANK
Bit 6
Bit 5
REV
0xxx = contrast level
1000 = contrast level
1001 = contrast level
1010 = contrast level
1011 = contrast level
1100 = contrast level
1101 = contrast level
1110 = contrast level
1111 = contrast level
35/54
SCAN
Bit 4
Frame Rate = 85Hz
CTR[3]
Bit 3
CTR[2]
Bit 2
8 (maximum)
7
6
8
5
4
3
2
1 (minimum)
CTR[1]
Bit 1
CTR[0]
Bit 0
1000 0000
Default
ST2032A
9/13/07