UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 399

• Manufacturer Part Number: UPD78F0413GA-GAM-AX
• Description: 8BIT UC, 32K FLASH, 1KB RAM, LCD
• Manufacturer: NEC

Specifications of UPD78F0413GA-GAM-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 30
• Ram Memory Size: 1024Byte
• Cpu Speed: 10MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 32KB
• Oscillator Type: External, Internal

15.7.3 Three-time-slice display example
the segment signals (SEG0 to SEG22) and the common signals (COM0 to COM2) of the 78K0/LC3 chip. This
example displays data "23456.78" in the LCD panel. The contents of the display data memory (addresses FA40H to
FA55H) correspond to this display.
it is necessary to apply the select or deselect voltage to the SEG6 to SEG8 pins according to Table 15-7 at the timing
of the common signals COM0 to COM2; see Figure 15-16 for the relationship between the segment signals and LCD
segments.
must contain x110.
signal in the 1/2 and 1/3 bias methods, respectively. When the select voltage is applied to SEG6 at the timing of
COM1 or COM2, an alternate rectangle waveform, +V
segment.
Figure 15-17 shows how the 8-digit LCD panel having the display pattern shown in Figure 15-16 is connected to
The following description focuses on numeral "6." (
According to Table 15-7, it is determined that the display data memory location (FA46H) that corresponds to SEG6
Figures 15-18 and 15-19 show examples of LCD drive waveforms between the SEG6 signal and each common
Remark
n = 0 to 6
SEG
Figure 15-16. Three-Time-Slice LCD Display Pattern and Electrode Connections
3n+2
Table 15-7. Select and Deselect Voltages (COM0 to COM2)
SEG
Common
COM0
COM1
COM2
3n+1
CHAPTER 15 LCD CONTROLLER/DRIVER
Segment
SEG
User’s Manual U18698EJ1V0UD
3n
Deselect
Select
Select
SEG6
LCD
) displayed in the third digit. To display "6." in the LCD panel,
/ V
LCD
, is generated to turn on the corresponding LCD
SEG7
Select
Select
Select
Select
Select
SEG8
COM2
COM0
COM1
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