RA8875L3N 查看數據表（PDF） - RAIO
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RA8875L3N Datasheet PDF : 9 Pages
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Version 1.0
RA8875
Character / Graphic TFT LCD Controller
5-4 Serial Flash / ROM Interface
Pin Name
SFCL
SFDI/SIO0
SFDO/SIO1
SFCS0#
SFCS1#
I/O Pin Description
O
External Serial Flash/ROM Clock
Serial flash/ROM SPI I/F clock.
External Flash/ROM SPI Data Input
I/O Single mode: Data input for serial flash/ROM SPI I/F.
Dual mode: The signal is used as bi-direction data #0(SIO0).
External Flash/ROM SPI Data Output
I/O Single mode: Data output for serial flash/ROM SPI I/F.
Dual mode: The signal is used as bi-direction data #1(SIO1).
O
External Flash/ROM SPI Chip Select 0
Chip select pin for serial flash/ROM SPI I/F #0.
O
External Flash/ROM SPI Chip Select 1
Chip select pin for serial flash/ROM SPI I/F #1.
5-5 Touch Interface
Pin Name
YN
YP
XN
XP
ADC_VREF
I/O Pin Description
A
YN Signal for Touch Panel
4-wire TP YN Control Signal.
A
YP Signal for Touch Panel
4-wire TP YP Control Signal.
A
XN Signal for Touch Panel
4-wire TP XN Control Signal.
A
XP Signal for Touch Panel
4-wire TP XP Control Signal.
TP ADC Reference Voltage
A This pin is the reference voltage for ADC as 0.5 VDD. The reference
voltage could be generated by RA8875(default) or from external circuit.
5-6 KeySCAN Interface
Pin Name
KOUT[3:0]/
(GPO[3:0])
KIN[4:0]/
(GPI[4:0])
GPOX
GPIX
I/O Pin Description
Keypad Strobe Line or GPOs(General Purpose Output)
O
Keypad matrix strobe lines outputs with open-drain. (Default).
They could be programmed as GPOs by register setting , if don’t use,
please keep floating.
Keypad Data Line or GPIs (General Purpose Input)
I
Keypad data inputs(Default), please add pull-up resister.
They could be programmed as GPIs by register setting, if don’t use,
please connect it to GND.
0 Extra GPO(General Purpose Output)
Additional GPO signal. if don’t use, please keep floating.
I Extra GPI(General Purpose Input)
Additional GPI signal, if don’t use, please connect it to GND.
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