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5.2 FRONT PANEL DRIVER IC FOR VIR (PT6312)
5.2.1 General Description
Operating Supply Voltage Range (TA=25 , VSS=0V)
Parameter
Operating Supply Voltage range 1
Operating Supply Voltage range 2
Absolute maximum ratings (Ta=25 , VSS=0 V,0)
Parameter
Applied voltage 1
Applied boltage 1
Input Voltage
Power dissipation
Operating Temperature
Storage Temperature
Pin Description
Pin
Name
Power supply pin 1
VDD
Oscillation pin
OSC
GND pin
VSS
Serial data input
SI
Serial data output
SO
Serial Clock input
SCK
Serial Chip select
CS
High with standing
voltage output pin
S1~S11
for segment
Power supply pin 2
VEE
High with standing
voltage output pin
G1~G6
for grid
High with standing
S12/G11
voltage output pin
~S16/G7
for segment / grid
L1~L4
Output pin for LED
K1~K4
Key data input pin
SW1~SW4
General - purpose
input pin
℃
Symbol
Min.
4.5
VDD
VEE - 32
VEE
℃
Symbol
VDD
VEE
VIN
PD
TOPR
TSTG
Pin No .
I/O
Function
Connected to the power supply of the system
14, 38
I
Connected to the oscillation capacitor
44
I/O
Connected to the ground of the system
7, 43
I
Serial data input starting from MSB
6
I
Serial data output starting from MSB
5
Serial data read at rising edge
8
I
Serial initialization at "L", effective at "H"
9
I
Output pin for segment
O
Output: Pch open drain + pull - down resistance
15~25
Pull - down resistance connection for FLP driver
27
I
Output pin for grid
O
37~32
Output: Pch open drain + pull - down resistance
Segment / grid output selectable pin
O
26,
Output: Pch open drain + pull - down resistance
28~31
42~39
O
Output pin for LED; output is CMOS output
10~13
I
Data input pin for key scanning
1~4
I
General - purpose input pin
Input data sent to icrocomputer in serial fromat
ＤＶＤ Ｓｅｒｖｉｃｅ Ｍａｎｕａｌ
Typ.
Max.
5.0
5.5
VEE - 30
VEE - 0
Limits
-0.3 ~ 7.0
VDD+0.3 ~ VDD -35
-0.3 ~ VDD +0.3
850*1
-25 ~ 75
-55 ~ 125
Unit
V
V
Unit
V
V
V
MV
℃
℃
１９
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