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GPIO2D: GPIO2 data (D2) / GPIO status/control register (0x39FFF9)
GPIO1D: GPIO1 data (D1) / GPIO status/control register (0x39FFF9)
GPIO0D: GPIO0 data (D0) / GPIO status/control register (0x39FFF9)
Input/output data for GPIO[2:0] pins.
In output mode
Write "1": High level
Write "0": Low level
Read: Valid
In input mode
Read "1": High level
Read "0": Low level
Write: Invalid
When GPIOx is set as the output mode, writing "1" to GPIOxD drives the GPIOx pin high, and writing "0" drives
the GPIOx pin low. In input mode, the value "1" is read from GPIOxD when the input-voltage level on the GPIOx
pin is high, and the value "0" is read when the input-voltage level is low.
At initial reset, GPIOxD is set to "0" (low).
GPO6D: GPO6 data (D6) / GPIO status/control register (0x39FFF9)
GPO5D: GPO5 data (D5) / GPIO status/control register (0x39FFF9)
GPO4D: GPO4 data (D4) / GPIO status/control register (0x39FFF9)
GPO3D: GPO3 data (D3) / GPIO status/control register (0x39FFF9)
Sets the data to be output from the GPO[6:3] pins.
Write "1": High level
Write "0": Low level
Read: Valid
Writing "1" to GPOxD drives the GPOx pin high, and writing "0" drives the GPOx pin low.
The GPO[6:3] pins are shared with the LCD signal output pins listed below. These pins can only be used for
general-purpose output when a 4-bit LCD panel is selected.
GPO6: FPDAT3
GPO5: FPDAT2
GPO4: FPDAT1
GPO3: FPDAT0
At initial reset, GPOxD is set to "0" (low).
SP1A[7:0]: Scratch pad (D[7:0]) / Scratch pad register (0x39FFFA)
This is a readable/writable 8-bit general-purpose register. It does not affect the operation of the chip, including the
LCD controller itself.
At initial reset, SP1A is set to "0x0".
PMODEN: Enable portrait mode (D7) / Portrait mode register (0x39FFFB)
Switches the display to portrait mode.
Write "1": Portrait mode
Write "0": Landscape (normal) mode
Read: Valid
Setting PMODEN to "1" places the LCD controller in a type of portrait mode selected by PMODSEL
(D6/0x39FFFB), producing a display suitable for a 90-degree-rotated LCD panel. Setting PMODEN to "0" selects
normal landscape mode.
At initial reset, PMODEN is set to "0" (landscape mode).
S1C33L03 FUNCTION PART
VII LCD CONTROLLER BLOCK: LCD CONTROLLER
EPSON
A-1
B-VII
LCDC
B-VII-2-39
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