Datasheet

Sensors
Freescale Semiconductor 11
MC146010
A
rchived by Freescale Semiconductor, Inc., 2009
Archive Information Archive Information
Table 4. MC146010 Test Mode Logic Table
Pin Function Type Logic Description
Pin 16, TEST Test Mode 1 Trigger Input None Set a –Ve voltage to the pin and source 100 μA from
the pin to start Test Mode 1.
Pin 12, OSC CAP Clock Input Input 0 Internal clock low
1 Internal clock high
Pin 5, V
DD
Chip Power
Pin 14, V
SS
Chip Ground
Pin 11, LED Built-in-Test for HUSH
Timer
Output Output pulse active low for 8 Clocks every 128
Clocks.
Pin 4, STROBE Analog Ground Output Output low when pin 12 is low.
Pin 6, IRED IRED Output 0 Output low when pin 12 is low.
1 Output high (3.0 V) when pin 12 is high.
Pin 3, DETECT Smoke Sensing Input Input NO SMK: V
DD
-2.5 V – (1/Hi Gain)
SMK: V
DD
-2.5 V –(1/Low Gain)
HI SMK: V
DD
-2.5 V – (2/Low Gain)
Pin 8, BRASS Smoke Latch Indicator Output 0 Output low when smoke latch not set.
1 Output high when smoke latch set.
Pin 9, SILVER Photo-Comparator
Indicator
Output 0 Output low when photo comparator not set.
1 Output high when photo comparator set.
Pin 7, I/O Photo-Amp Routing
Enable
Input 0 Disable the function of Pin 1, 2, 10 and 15 in Test
Mode 1.
1 Enable photoamplifier output routed to the pins and
enable pins 1, 2, 10 and 15 in test Mode 1.
Pin 15, LOW_BATT Low Battery Trip Point Input Control photo amp. Gain and output routing
Pin 10, FEEDBACK Feedback Input Control hysteresis