RA8870
Version 1.1 Brief Specification
Character/Graphic TFT LCD Controller
Pin Name
VRH
I/O
A
Pin#
64
Pin Description
DAC Reference Voltage Output
This is a reference voltage output of DAC. For normal operation, it
only need add a 0.2uF capacitor to ground.
ADC Reference Voltage
This pin is the reference voltage input of ADC. The reference
voltage could be generated by RA8870 or from external circuit.
IO VDD
3.3V IO power input.
LDO VDD
3.3V power source for LDO. The internal LDO will generate the
1.8V power output.
LDO GND
Ground signal for internal LDO.
LDO Output
1.8V power generated by internal LDO. It must connect bypass
capacities to prevent power noise.
LDO Capacitor Input
It must connect 1uF bypass capacities to prevent power noise.
CORE VDD
Core VDD is 1.8V.The core power input that connect to LDO_OUT.
It must connect 1uF bypass capacities to prevent power noise.
ADC VDD
ADC 3.3V power signals. Please connect this signal to 3.3V.
ADC GND
ADC ground signal. Please connect this signal to ground.
DAC VDD
DAC 3.3V power signal. Please connect this signal to 3.3V.
DAC GND
DAC ground signal. Please connect this signal to ground.
ADC_VREF
A
98
6,
45,
113
1,
72
71,
128
73
VDD
P
LDO_VDD
P
LDO_GND
P
LDO_OUT
P
LDO_CAP
P
4
43,
112
95,
96
97
66
70
5,
9,
44,
94,
111
CORE_VDD
P
ADC_VDD
ADC_GND
DAC_VDD
DAC_GND
P
P
P
P
GND
P
GND
IO Cell/Core ground signals.
RAiO
TECHNOLOGY INC.
8/9
www.raio.com.tw
RAIO [ RAIO TECHNOLOGY INC. ]
