UPD78F9418AGK-9EU Renesas Electronics America, UPD78F9418AGK-9EU Datasheet - Page 223

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

Specifications of UPD78F9418AGK-9EU

• Lead Free Status / Rohs Status: Supplier Unconfirmed

14.8.3 Three-time-slice display example
the segment signals (S0 to S26) and the common signals (COM0 to COM2) of the
Subseries chip. This example displays data "123456.789" in the LCD panel. The contents of the display data memory
(addresses FA00H to FA1AH) correspond to this display.
panel, it is necessary to apply the select or deselect voltage to the S9 to S11 pins according to Table 14-9 at the
timing of the common signals COM0 to COM2; see Figure 14-15 for the relationship between the segment signals and
LCD segments.
must contain x110.
in the 1/2 and 1/3 bias methods, respectively. When the select voltage is applied to S9 at the timing of COM1 or
COM2, an alternate rectangle waveform, +V
Figure 14-16 shows how the nine-digit LCD panel having the display pattern shown in Figure 14-15 is connected to
The following description focuses on numeral "6." (
According to Table 14-9, it is determined that the display data memory location (FA09H) that corresponds to S9
Figures 14-17 and 14-18 show examples of LCD drive waveforms between the S9 signal and each common signal
Remark
n = 0 to 8
Figure 14-15. Three-Time-Slice LCD Display Pattern and Electrode Connections
S
3n+2
;; ;;
;;
;;
Table 14-9. Select and Deselect Voltages (COM0 to COM2)
S
3n+1
Common
COM0
COM1
COM2
;
;
CHAPTER 14 LCD CONTROLLER/DRIVER
S
LCD
Segment
3n
User’s Manual U13952EJ3V1UD
/ V
LCD
, is generated to turn on the corresponding LCD segment.
Deselect
Select
Select
S9
) displayed in the fourth digit. To display "6." in the LCD
Select
Select
Select
S10
;;
;;
;;
Select
Select
S11
;;;
;;;
COM2
COM0
;;
;;
;;
;;
PD789407A or 789417A
COM1
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