HV623 View Datasheet(PDF) - Supertex Inc
Part Name
Description
View to exact match
HV623 Datasheet PDF : 10 Pages
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Function Table
Sequence Function
1
Shift Data
from HVOUT1 to 32
2
Shift Data
from HVOUT32 to 1
3
Load Shift Register
4
Load Counter
5
Counting/Voltage
Conversion
HV623
DIR Data-In CSI
(D1 - D7)
CSO
Shift Load
Clock Count
Count
Clock
VR
HVOUT
H
H
L
Output
L
L
L
L
H
L
H
Output
L
L
L
L
L
H
X
X
L
L
L
-
X
X
Pre-define by 1 or 2
L
L
L
-
X
X
L
L
Initiates
-
VRAMP
Timing Diagrams
(a) Basic System Timing
VR
Chip Select
Input (CSI)
Chip Select
Output (CSO)
Shift Clock
(SC)
Data In
(D1 - D7)
Load Count*
(LC)
Count Clock
(CC)
HV OUT
t CR
t RR
t HR
t FR
Load
First
Device
Load
Second
Device
Load
Last
Device
↑↓↑↓↑↓ ↑↓ ↑↓↑↓ ↑↓ ↑↓↑↓↑↓ ↑↓ ↑↓↑↓
↑↓
↑↓↑↓↑↓↑↓
Data from Data Bus (See Detailed Timing)
t DLCR
↑↑ ↑ ↑↑
↑
12 3 4 5
128
↑↑ ↑ ↑↑
↑
12 3 4 5
128
*HVOUT will clear to zero with load count.
12-128
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