UPD78F9418AGK-9EU Renesas Electronics America, UPD78F9418AGK-9EU Datasheet - Page 227

• Manufacturer Part Number: UPD78F9418AGK-9EU
• Manufacturer: Renesas Electronics America

Specifications of UPD78F9418AGK-9EU

• Lead Free Status / Rohs Status: Supplier Unconfirmed

14.8.4 Four-time-slice display example
the segment signals (S0 to S27) and the common signals (COM0 to COM3) of the
Subseries chip. This example displays data "123456.78901234" in the LCD panel. The contents of the display data
memory (addresses FA00H to FA1BH) correspond to this display.
it is necessary to apply the select or deselect voltage to the S16 and S17 pins according to Table 14-10 at the timing
of the common signals COM0 to COM3; see Figure 14-19 for the relationship between the segment signals and LCD
segments.
must contain 1101.
the select voltage is applied to S16 at the timing of COM0, an alternate rectangle waveform, +V
to turn on the corresponding LCD segment.
Figure 14-20 shows how the 14-digit LCD panel having the display pattern shown in Figure 14-19 is connected to
The following description focuses on numeral "6." ( ) displayed in the ninth digit. To display "6." in the LCD panel,
According to Table 14-10, it is determined that the display data memory location (FA16H) that corresponds to S16
Figure 14-21 shows examples of LCD drive waveforms between the S16 signal and each common signal. When
Remark
n = 0 to 13
Figure 14-19. Four-Time-Slice LCD Display Pattern and Electrode Connections
S
2n+1
S
Table 14-10. Select and Deselect Voltages (COM0 to COM3)
2n
CHAPTER 14 LCD CONTROLLER/DRIVER
Common
COM0
COM1
COM2
COM3
User’s Manual U13952EJ3V1UD
Segment
Deselect
COM2
Select
Select
Select
COM0
S16
Select
Select
Select
Select
S17
COM1
COM3
PD789407A or 789417A
LCD
/ V
LCD
, is generated
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