uja1023 NXP Semiconductors, uja1023 Datasheet - Page 33

• Manufacturer Part Number: uja1023
• Description: Uja1023 Lin-i/o Slave
• Manufacturer: NXP Semiconductors

Philips Semiconductors
UJA1023_4
Product data sheet
7.3.2 INH pin
Table 29.
[1]
[2]
[3]
The inhibit pin INH can be configured in three operation modes: ADC mode, Switch open
mode and External regulator mode (see
INH is in External regulator mode (high-side switch is on).
Operation
Power-on condition
(high-impedance)
High-impedance
Low-side open-state
Low-side close-state
High-side open-state (Cyclic
sense mode: off-state)
High-side close-state (Cyclic
sense mode: on-state)
Push-pull HIGH-state
Push-pull LOW-state
Input with pull-up
Input at threshold V
(typically 3 V)
Input at threshold V
(typically 1.5 V)
Capture edge at falling and
rising edge
Capture edge at falling edge X
Capture edge at rising edge X
X = don’t care.
The R
chosen to provide enough pull-up current for switches; thus no external pull-up resistor is needed. The
R
side driver to drive LEDs.
Refer to
This feature is used for diagnosis purposes to check the presence of a switch with integrated parallel
resistor (a useful resistor value is 3000
on(LS)
on
of the low-side driver is much smaller than the R
I/O pin operation
values of the high-side and the low-side switches can be found in
Table 17
th1
th2
where threshold TH3 is defined in Cyclic sense mode in case threshold TH2 is selected.
Rev. 04 — 5 July 2006
[1][2]
High-side
enable
0
0
0
0
1
1
1
1
1
X
X
X
1 %).
Low-side
enable
0
0
1
1
0
0
1
1
0
X
X
X
X
X
Section 7.2.4
on(HS)
PxOut
0
X
0
1
0
1
1
0
1
X
X
X
X
X
of the high-side driver, which enables the low
and
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Figure
Section
Input
threshold
0
X
X
X
X
X
X
X
X
0
1
X
X
X
11). After power-on the
[3]
10. The R
UJA1023
LIN-I/O slave
Edge
capture
none
X
X
X
X
X
X
X
X
X
X
both
fall
rise
on(HS)
33 of 48
value is