3. TECHNICAL BRIEF
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3.5.1 Interconnection with external devices
A. RTC block interface
Countered by external X-TAL
The X-TAL oscillates 32.768KHz
B. LCD module interface
The LCD module is controlled by AD6527 and MV8620.
In operating mode, the AD6527 controls the LCD module through LCD_CS, LCD_RS,
L_DATA[15:00], LCD_BACKLIGT, LCD_RESET, LCD_WR, 2V8_MM.
Signals Description
LCD_CS LCD driver IC chip enable.
LCD_RESET(GPIO 15) This pin resets LCD driver IC.
LCD_RS This pin select Command or Data.
L_DATA[15:00] The pins carry LCD data.
LCD_WR LCD data write enable signal.
2V8_MM 2.8V voltage is supplied to LCD driver IC.
LCD_BACKLIGHT
This pin controls LCD backlight level.
(GPO_23)
Table 3-2. LCD CONTRON SIGNALS DISCRIPTION
Figure 3-8.
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