ATA6832 ATMEL Corporation, ATA6832 Datasheet - Page 6

• Manufacturer Part Number: ATA6832
• Description: High Temperature Triple Half-bridge Driver with SPI and PWM
• Manufacturer: ATMEL Corporation

3.2
3.3
6
Bit 15 Bit 14
Bit 15
SI
H
H
H
H
Power-supply Fail
Open-load Detection
Bit 14
OCS
ATA6832
H
H
H
H
(OCS)
Bit 13
Bit 13
OLD
H
H
H
H
Bit 12
Bit 12
PH3
H
L
L
After power-on reset, the input register has the following status:
L
The following patterns are used to enable internal test modes of the IC. Do not use these pat-
terns during normal operation.
If undervoltage is detected at pin VS, the power-supply fail bit (PSF) in the output register is set
and all outputs are disabled. To detect an undervoltage, its duration has to last longer than the
undervoltage detection delay time t
voltage returns to the normal operational value. The PSF bit stays high until it is reset by the
SRR bit in the input register.
If the open-load detection bit (OLD) is set to low, a pull-up current for each high-side switch and
a pull-down current for each low-side switch is turned on (open-load detection current I
the current through the external load does not reach the open-load detection current, the corre-
sponding bit of the output in the output register is set to high.
Switching on an output stage with the OLD bit set to low disables the open-load function for this
output.
Bit 11
Bit 11
PL3
H
L
L
L
Bit 10
Bit 10
PH2
H
L
L
L
Bit 9
Bit 9
PL2
H
L
L
L
Bit 8
Bit 8
PH1
H
L
L
L
dUV
Bit 7
Bit 7
PL1
H
L
L
L
. The outputs are enabled immediately when the supply
(HS3)
Bit 6
Bit 6
HS3
L
L
L
L
(LS3)
Bit 5
Bit 5
LS3
L
L
L
L
(HS2)
Bit 4
Bit 4
HS2
L
L
L
L
(LS2)
Bit 3
Bit 3
LS2
L
L
L
L
(HS1)
Bit 2
Bit 2
HS1
L
L
L
L
4951A–AUTO–08/06
(LS1)
Bit 1
Bit 1
LS1
L
L
L
L
OUT1-3
(SRR)
Bit 0
Bit 0
SRR
L
L
L
L
). If