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2.7 Miscellaneous
S1D13505
X23A-A-001-14
• The memory data bus, MD[15:0], is used to configure the chip at power-on.
• Three General Purpose Input/Output pins, GPIO[3:1], are available if the upper Memory
Address pins are not required for asymmetric DRAM support.
• Suspend power save mode can be initiated by either hardware or software.
• The SUSPEND# pin is used either as an input to initiate Suspend mode, or as a General Purpose
Output that can be used to control the LCD backlight. Power-on polarity is selected by an MD
configuration pin.
• Operating voltages from 2.7 volts to 5.5 volts are supported
• 128-pin QFP15 surface mount package
Epson Research and Development
Vancouver Design Center
Hardware Functional Specification
Issue Date: 01/02/02
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