SC9827
PIN DESCRIPTION
Pin no.
1
2
3
4
5，12
6
7
8
9
10
11
13
14~16
17
18
19
20
21~28
29
42
58
87
99
30
31
32
41
57
89
100
33~40
43~54
55
56
59
60
LA[0:7]
LA[8:19]
CAS#
VPP
DRAS0#
DWE#
O
O
O
I
O
O
Address bus.
Address bus.
Column address filter to dynamic memory (low active).
5V power supply.
Row address filter to dynamic memory.
Writable dynamic memory (low active).
REV:1.0
2009.03.26
Page 4 of 7
VSS
I
Main ground.
XIN
XOUT
I
O
27MHz crystal oscillator input, the duty is 50%.
Input clock crystal oscillator output.
V
CC
I
Main power supply 2.5V
Pin name
VSSV
VDAC
YDAC
VCCV
VSSA
RSET
VREF
COMP
VCM
MIC2
VDDA
AUX03
AUX0[5:7]
LWR#
LOE#
CS0#
CS3#
LD[0:7]
I/O
I
O
O
I
I
O
O
O
O
I
I
I/O
I/O
O
O
O
O
I/O
Analog ground.
Video DAC V port output.
Video DAC Y port output.
Analog power supply. 2.5V
Analog ground.
Reset the internal current of generator; connect with a 510Ω
resistor to ground.
Output reference voltage, connect a 0.01μF high frequency filter
capacitor to VSSA.
Compensation capacitance for low-pass filter on VDAC. Connect
to a 0.01μF high-frequency bypass capacitor to VSSA.
ADC analog reference voltage, connect to a 0.01μF high
frequency filter capacitor to VSSA.
Microphone input.
Analog 5.0V power supply.
General-purpose programmable I/O.
General-purpose programmable I/O.
RISC interface writable (low active).
RISC static memory output (low active).
Chip select 0 for SRAM.
Chip select 3 for SRAM.
Data bus.
Function
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