HIP0082 Intersil Corporation, HIP0082 Datasheet - Page 8

• Manufacturer Part Number: HIP0082
• Description: Quad Power Drivers with Serial Diagnostic Interface
• Manufacturer: Intersil Corporation

There is no need in normal operation to read the Direct
Comparator output bits, except to directly read the fault state
when CS goes low or to cross-check on the filtered OL and
SG fault data. If the Direct Comparator data is ignored, then
only 16 bits of SPI data is read. In this case the last 3 bits in
the 16 bit sequence is the first 3 bits of Direct Comparator
data which can be ignored.
Data read from a SPI interface starts with the first clock
pulse. The CS and R/W inputs cannot be changed while
reading data from the shift register. And, as noted, an inter-
nal low on the shift register input causes low data bits to fol-
low the 21 bits of diagnostic data.
While the Write/Store operation calls for 6 bits of data, a SPI
write will output 8 bits. The first 2 bits transmitted should be
dummy bits. The 3-bit is the Test bit which should be low for
normal operation. The Test bit is used to facilitate testing in
the manufacturing process and is not recommended for
other use. The 6 programmable bits are described in the
section on Diagnostic Write Operation.
Pin Descriptions
V
charge pump is used to boost the Power MOSFET gate
drive. This allows a single 5V supply to satisfy all logic and
drive requirements.
CC
R/W
TXD
CLK
CS
and GND - 5V Supply and Ground connections. A
ZZ = HIGH IMPEDANCE
CLK
ZZZZZ
TXD
R/W
CS
t
CSLCLK
ZZZZ
t
CSLDV
t
RWLCLK
FSB
FIGURE 3. SERIAL INTERFACE WRITE OPERATION
FIGURE 2. SERIAL INTERFACE TIMING DIAGRAM
t
RWLDZ
T
d
t
_OL1
CLKL
HIP0082, HIP0084
f
CLK
T
d
_OL2
t
DVCLKL
t
CLKH
T
8
d
_OL3
OUT1 - OUT4 - Low-side output drivers with 0.62
and OUT2) or 0.57
outputs are provided with over current shutdown and over
voltage clamping. Additionally, open-load and short-to-
ground detection is carried out when the outputs are ON.
IN1 - IN4 - Active-low CMOS logic inputs which control the
output stages OUT1 - OUT4. These inputs are provided with
pull-up resistors.
RST - Active-low logic-level reset input with internal pull-up
resistor.
CLK - Clock input for synchronous serial interface with inter-
nal pull-up resistor. This input must be high when CS transi-
tions from high to low.
CS - Active-low chip select input for serial interface. This
input has an internal pull-up resistor.
R/W - Read/write control pin for serial interface. This input
controls whether the TXD pin is an input or output. This input
has an internal pull-up resistor.
TXD - Bidirectional data pin for serial interface. When R/W is
high diagnostic data can be read from HIP0082. When R/W
is low, 6 bits may be written to the internal program register.
t
RWHDV
T
d
_OL4
t
RWHCLK
ISC
(OUT3 and OUT4) on resistance. The
TEST
t
pCLKD
t
CSHDZ
ZZZZ
t
CLKCSH
ZZ
(OUT1