HD404618 Datasheet, PDF (57/89 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer

HD404618 Series
Bit 3
80 SEG1
81 SEG2
82 SEG3
83 SEG4
84 SEG5
85 SEG6
86 SEG7
87 SEG8
88 SEG9
89 SEG10
90 SEG11
91 SEG12
92 SEG13
93 SEG14
94 SEG15
95 SEG16
COM4
Bit 2
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
COM3
Bit 1
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
COM2
Bit 0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
COM1
$050
$051
$052
$053
$054
$055
$056
$057
$058
$059
$05A
$05B
$05C
$05D
$05E
$05F
Bit 3
96 SEG17
97 SEG18
98 SEG19
99 SEG20
100 SEG21
101 SEG22
102 SEG23
103 SEG24
104 SEG25
105 SEG26
106 SEG27
107 SEG28
108 SEG29
109 SEG30
110 SEG31
111 SEG32
COM4
Bit 2
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
SEG32
COM3
Bit 1
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
SEG32
COM2
Bit 0
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
SEG32
COM1
$060
$061
$062
$063
$064
$065
$066
$067
$068
$069
$06A
$06B
$06C
$06D
$06E
$06F
Figure 36 Configuration of LCD RAM Area
LCD Control Register (LCR: $013): Three-bit write-only register which controls LCD blanking, the
turning on and off of the LCD’s power supply division resistor, and display in watch and subactive modes
(see table 27).
• Blank/display
Blank: Segment signals are turned off regardless of LCD RAM data setting.
Display: LCD RAM data is output as segment signals.
• Power switch on/off
Off: The power switch is off.
On: The power switch is on and V₁ is V_CC.
• Watch/subactive mode display
Off: In watch and subactive modes, all common and segment pins are grounded and the liquid crystal
power switch is turned off.
On: In watch and subactive modes, LCD RAM data is output as segment signals.
57