upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 819

• Manufacturer Part Number: upd70f3422gj-gae-qs-ax
• Description: 32-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

LCD Controller/Driver (LCD-C/D)
Chapter 22
From this, it can be seen that 1101
must be prepared in the display control
B
register SEGREG028 and 1111
must be prepared in SEGREG029.
B
Examples of the LCD drive waveforms between SEG28 and the COM0 and
COM1 signals are shown in Figure 22-8 on page 821 (for the sake of simplicity,
waveforms for COM2 and COM3 have been omitted).
When SEG28 is at the selection level at the COM0 selection timing, it can be
seen that the +V
/–V
AC square wave, which is the LCD illumination
LCD
LCD
(ON) level, is generated.
Preliminary User’s Manual U17566EE1V2UM00
819