MCZ14467EG FREESCALE [Freescale Semiconductor, Inc], MCZ14467EG Datasheet - Page 6

• Manufacturer Part Number: MCZ14467EG
• Description: Low-Power CMOS Ionization Smoke Detector IC
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

MC14467-1
6
HYSTERESIS (Internal)
LOW BATTERY OUT
SAMPLE (Internal)
OSCILLATOR
DETECT OUT
(Pins 13 & 14)
(Pins 10 & 11)
Notes:
1. Horn modulation is self-completing. When going from smoke to no smoke, the alarm condition will terminate only when horn is off.
2. Comparators are strobed on once per clock cycle (1.67 s for no smoke, 40 ms for smoke).
3. Low battery comparator information is latched only during LED pulse.
4. ~ 100 mVp–p swing.
(Pin 12)
Smoke
(Pin 1)
(Pin 4)
HORN
(Pin 5)
LED
Standby
No Smoke/
No Low Battery
24 Clock Cycles
(40 s)
24 Clock Cycles (0.96 s)
Smoke/no Low Battery
Figure 7. Timing Diagram
Battery Test
(Note 3)
Smoke/Low Battery
40 m s
Suppressed Chirp
24 Clock Cycles
(Note 1)
10 m s
No Smoke/low Battery
Freescale Semiconductor
(Note 3)
Cycles (10.0 s)
1.67 s
6 Clock
Sensors