SC9827
PIN DESCRIPTION
Pin no.
Pin name
I/O
I
Function
1
VSSV
VDAC
YDAC
VCCV
VSSA
Analog ground.
2
3
O
O
I
Video DAC V port output.
Video DAC Y port output.
Analog power supply. 2.5V
Analog ground.
4
5，12
I
Reset the internal current of generator; connect with a 510Ω
resistor to ground.
6
7
8
9
RSET
VREF
COMP
VCM
O
O
O
O
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.
10
11
MIC2
VDDA
I
I
Analog 5.0V power supply.
13
AUX03
AUX0[5:7]
LWR#
I/O
I/O
O
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.
14~16
17
18
LOE#
O
19
CS0#
O
20
CS3#
O
Chip select 3 for SRAM.
21~28
29
LD[0:7]
I/O
Data bus.
42
VCC
I
Main power supply 2.5V
58
87
99
30
XIN
I
27MHz crystal oscillator input, the duty is 50%.
Input clock crystal oscillator output.
31
XOUT
O
32
41
VSS
I
Main ground.
57
89
100
33~40
43~54
55
LA[0:7]
LA[8:19]
CAS#
O
O
O
I
Address bus.
Address bus.
Column address filter to dynamic memory (low active).
5V power supply.
56
VPP
59
DRAS0#
DWE#
O
O
Row address filter to dynamic memory.
Writable dynamic memory (low active).
60
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.0
2009.03.26
Page 4 of 7
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