UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 396

• 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

15.7.2 Two-time-slice display example
the segment signals (SEG0 to SEG22) and the common signals (COM0 and COM1) of the 78K0/LC3 chip. This
example displays data "2345.6" in the LCD panel. The contents of the display data memory (FA40H to FA55H)
correspond to this display.
it is necessary to apply the select or deselect voltage to the SEG12 to SEG15 pins according to Table 15-6 at the
timing of the common signals COM0 and COM1; see Figure 15-13 for the relationship between the segment signals
and LCD segments.
SEG15 must contain xx10.
When the select voltage is applied to SEG15 at the timing of COM1, an alternate rectangle waveform, +V
generated to turn on the corresponding LCD segment.
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Figure 15-14 shows how the 6-digit LCD panel having the display pattern shown in Figure 15-13 is connected to
The following description focuses on numeral "3" (
According to Table 15-6, it is determined that the display data memory location (FA4FH) that corresponds to
Figure 15-15 shows examples of LCD drive waveforms between the SEG15 signal and each common signal.
Remark
n = 0 to 4
Figure 15-13. Two-Time-Slice LCD Display Pattern and Electrode Connections
SEG
SEG
4n+3
4n+2
Table 15-6. Select and Deselect Voltages (COM0 and COM1)
Common
COM0
COM1
Segment
CHAPTER 15 LCD CONTROLLER/DRIVER
User’s Manual U18698EJ1V0UD
Deselect
SEG12
SEG
Select
SEG
4n
4n+1
) displayed in the fourth digit. To display "3" in the LCD panel,
SEG13
Select
Select
Deselect
SEG14
Select
COM0
Deselect
SEG15
Select
COM1
LCD
/ V
LCD
, is