HV623PG データシートの表示（PDF） - Supertex Inc
部品番号
コンポーネント説明
メーカー
HV623PG Datasheet PDF : 10 Pages
| |||
– OBSOLETE –
32-Channel 128-Level Amplitude Gray-Shade
Display Column Driver
HV623
Features
❏ 5V CMOS inputs
❏ Up to 80V modulation voltage
❏ Capable of 128 levels of gray shading
❏ 8.0MHz data throughput rate
❏ Pin-programmable shift direction (DIR)
❏ D/A conversion cycle time is 64µs
❏ Diodes in output structure allow usage
in energy recovery systems
❏ Integrated HVCMOS® technology
❏ Available in 3-sided 64-lead gullwing package
General Description
The HV623 is a 32-channel driver IC for gray shade display use.
It is designed to produce varying output voltages between 3 and
80 volts. This amplitude modulation at the output is facilitated by
an external ramp voltage VR. See Theory of Operation for detailed
explanation.
This device consists of a dual 16-bit shift registers, 32 data latches
and comparators, and control logic to preform 128 levels of gray
shading. There are 7 bits of data inputs. Data is shifted through the
shift registers at both edges of the clock, resulting a data transfer
rate of twice of the shift clock frequency. When the DIR pin is high,
CSI/CSO is the input/output for the chip select pulse. When DIR
is low, CSI/CSO is the output/input for the chip select pulse. The
DIR = HIGH also allows the HV623 to shift data in the counter-
clockwise direction when viewed from the top of the package.
When the DIR pin is low, data is shifted in the clockwise direction.
The output circuitry allows the energy which is stored in the output
capacitance to be returned to VPP through the body diode of the
output transistor.
Functional Block Diagram
VCTL
RCTL
1
2
Dual
16-bit
Shift Registers
31
32
DIR
I/O
Buffers
SC
SC
I/O
Buffers
Shift
Clock
Buffer
L/E Data
Latches
L/E Data
Latches
L/E Data
Latches
L/E Data
Latches
Data In
Buffers
7
Latches and 7
Comparators
7
Latches and 7
Comparators
See Output Stage Detail
GND
VR VPP
RS
F/F
Output
Stage
HVOUT 1
RS
F/F
Output
Stage
HVOUT 2
7
Latches and 7
Comparators
RS
F/F
Output
Stage
HVOUT 31
7
Latches and 7
Comparators
RS
F/F
Output
Stage
HVOUT 32
Clear
7
Count
Load
Clear
Pulse
Generator
Counter
CC
Reset
Counter
Load
Count
Buffer
Count
Clock
Buffer
CSI
CSO
SC
D7
D1
LC
CC
12/04/02
SC = Shift Clock
LC = Load Count
CC = Count Clock
CSI = Chip Select Input
CSO = Chip Select Output
*Strobe = twice the SC frequency
Supertex Inc. does not recommend the use of its products in life support applications and will not knowingly sell its products for use in such applications unless it receives an adequate "products liability
indemnification insurance agreement." Supertex does not assume responsibility for use of devices described and limits its liability to the replacement of devices determined to be defective due to
workmanship. No responsibility is assumed for possible omissions or inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications, refer to the
Supertex website: http://www.supertex.com. For complete liability information on all Supertex prod1ucts, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website.
Share Link: 