UPD78F9418AGK-9EU Renesas Electronics America, UPD78F9418AGK-9EU Datasheet - Page 217

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

Specifications of UPD78F9418AGK-9EU

• Lead Free Status / Rohs Status: Supplier Unconfirmed

14.8 Display Modes
14.8.1 Static display example
the segment signals (S0 to S23) and the common signal (COM0) of the PD789407A or 789417A Subseries chip.
This example displays data "12.3" in the LCD panel. The contents of the display data memory (addresses FA00H to
FA17H) correspond to this display.
panel, it is necessary to apply the select or deselect voltage to the S8 to S15 pins according to Table 14-7 at the
timing of the common signal COM0; see Figure 14-9 for the relationship between the segment signals and LCD
segments.
FA0FH) must be 10110111.
S11 at the timing of COM0, an alternate rectangle waveform, +V
LCD segment.
together to increase the driving capacity.
Figure 14-10 shows how the three-digit LCD panel having the display pattern shown in Figure 14-9 is connected to
The following description focuses on numeral "2." (
According to Table 14-7, it is determined that the bit-0 pattern of the display data memory locations (FA08H to
Figure 14-11 shows the LCD drive waveforms of S11 and S12, and COM0. When the select voltage is applied to
COM1 to COM3 are supplied with the same waveform as for COM0. So, COM0 to COM3 may be connected
Remark
Common
COM0
n = 0 to 2
Segment
S
8n+6
S
Figure 14-9. Static LCD Display Pattern and Electrode Connections
8n+4
Select
S8
Table 14-7. Select and Deselect Voltages (COM0)
S
8n+7
S
8n+3
CHAPTER 14 LCD CONTROLLER/DRIVER
Deselect
S9
User’s Manual U13952EJ3V1UD
S
S
S
S
8n+2
8n+5
8n+1
8n
Select
S10
) displayed in the second digit. To display "2." in the LCD
Select
S11
LCD
/ V
LCD
Deselect
COM0
S12
, is generated to turn on the corresponding
Select
S13
Select
S14
Select
S15
215