Pin Description I/O Hi Hi-z Remarks
67 I2CLK D.I/O Active - -
68 MODE D.I - - -
69 R2 D.I - - -
70 (NO USE) D.O - - -
71 VBACK/P0.7 D.I - - -
72 LCD_SEGMENT D.O Active - -
73 LCD_SEGMENT D.O Active - -
74 LCD_SEGMENT D.O Active - -
75 LCD_SEGMENT D.O Active - -
76 LCD_SEGMENT D.O Active - -
77 VDDLI - - - -
78 LCD_SEGMENT D.O Active - -
79 LCD_SEGMENT D.O Active - -
80 LCD_SEGMENT D.O Active - -
81 LCD_SEGMENT D.O Active - -
82 LCD_SEGMENT D.O Active - -
83 LCD_SEGMENT D.O Active - -
84 LCD_SEGMENT D.O Active - -
85 VSS - - - -
86 VDD - - - -
87 LCD_SEGMENT D.O Active - -
88 (NO USE) D.O - -
89 Power Select D.O Low Power - -
90 LCD_SEGMENT D.O Active - -
91 LCD_SEGMENT D.O Active - -
92 LCD_SEGMENT D.O Active - -
93 LCD_SEGMENT D.O Active - -
94 LCD_SEGMENT D.O Active - -
95 LCD_SEGMENT D.O Active - -
96 LCD_SEGMENT D.O Active - -
97 LCD_SEGMENT D.O Active - -
98 LCD_SEGMENT D.O Active - -
99 LCD_SEGMENT D.O Active - -
100 LCD_SEGMENT D.O Active - -
27. EEPROM LAYOUT (BASE UNIT)
27.1. Scope
The purpose of this section is to describe the layout of the EEPROM (IC4) for the KX-TCD420
Base Unit.
The EEPROM contains hardware, software, and user specific parameters. Some parameters are
set during production of the base e.g. crystal frequency adjustment at address 0000 and 0001,
some are set by the user configuration e.g. ringer volume at address 0220, and some are set
during normal use of the phone e.g. meter pulse billing at address 0140..015F.
67
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