HD404328 Datasheet, PDF (63/96 Pages) Hitachi Semiconductor – 4 BIT SINGLE CHIP MICROCOMPUTER

HD404328 Series
Bit 3 Bit 2 Bit 1 Bit 0
80 SEG1 SEG1 SEG1 SEG1 $050
81 SEG2 SEG2 SEG2 SEG2 $051
82 SEG3 SEG3 SEG3 SEG3 $052
83 SEG4 SEG4 SEG4 SEG4 $053
84 SEG5 SEG5 SEG5 SEG5 $054
85 SEG6 SEG6 SEG6 SEG6 $055
86 SEG7 SEG7 SEG7 SEG7 $056
87 SEG8 SEG8 SEG8 SEG8 $057
88 SEG9 SEG9 SEG9 SEG9 $058
89 SEG10 SEG10 SEG10 SEG10 $059
90 SEG11 SEG11 SEG11 SEG11 $05A
91 SEG12 SEG12 SEG12 SEG12 $05B
COM4 COM3 COM2 COM1
Bit 3 Bit 2 Bit 1 Bit 0
92 SEG13 SEG13 SEG13 SEG13 $05C
93 SEG14 SEG14 SEG14 SEG14 $05D
94 SEG15 SEG15 SEG15 SEG15 $05E
95 SEG16 SEG16 SEG16 SEG16 $05F
96 SEG17 SEG17 SEG17 SEG17 $060
97 SEG18 SEG18 SEG18 SEG18 $061
98 SEG19 SEG19 SEG19 SEG19 $062
99 SEG20 SEG20 SEG20 SEG20 $063
100 SEG21 SEG21 SEG21 SEG21 $064
101 SEG22 SEG22 SEG22 SEG22 $065
102 SEG23 SEG23 SEG23 SEG23 $066
103 SEG24 SEG24 SEG24 SEG24 $067
COM4 COM3 COM2 COM1
Figure 39 Configuration of LCD RAM Area (for Dual-Port RAM)
LCD Control Register (LCR: $013): Three-bit write-only register which controls LCD blanking, the
turning on and off of the liquid-crystal display’s power supply division resistor, and display in watch and
subactive modes, as shown in table 29.
• 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.
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