NCV7001
http://onsemi.com
5
PIN DESCRIPTION
Pin No. Symbol Description
1 RDLY Determines the low voltage reset delay and watchdog enable and disable delay.
2 NTEST Low = test, high = normal operation.
3 INN1 Minus input to channel 1 comparator.
4 INP1 Plus input to channel 1 comparator.
5 INN2 Minus input to channel 2 comparator.
6 INP2 Plus input to channel 2 comparator.
7 INP3 Plus input to channel 3 comparator.
8 INN3 Minus input to channel 3 comparator.
9 INP4 Plus input to channel 4 comparator.
10 INN4 Minus input to channel 4 comparator.
11 THOLD Variable threshold adjustment.
12 GND Ground.
13 NOUT4 Inverted output of comparator 4.
14 NOUT3 Inverted output of comparator 3.
15 WDLY Determines watchdog timing.
16 OLE Disables outputs. High = normal operation. Low = forces all outputs and comparators high.
17 WD1 Watchdog input.
18 V
CC
5.0 V input to IC.
19 WD2 Watchdog input.
20 NLVI Reset output (in reset when low).
21 LVI Reset output (in reset when high).
22 WDO Watchdog output (low for valid watchdog signal).
23 NOUT2 Inverted output of comparator 2.
24 NOUT1 Inverted output of comparator 1.
Table 1. Wheel Speed Output Functionality
Sensor NTEST OLE NOUTx
OPEN L L H
OPEN L H L
OPEN H L H
OPEN H H X
NORMAL L L H
NORMAL L H H
NORMAL H L H
NORMAL H H X
†X = Do not care (dependent on presence of sensor signal).
