ZMOT0BSB0A0BG Zilog, ZMOT0BSB0A0BG Datasheet - Page 32

• Manufacturer Part Number: ZMOT0BSB0A0BG
• Description: Microcontrollers (MCU) ZMB N. SDA02-54-P Py Fr AA 0.9 GI T1 Lens
• Manufacturer: Zilog

Specifications of ZMOT0BSB0A0BG

• Processor Series: ZMOTION
• Core: Z8FS040
• Number Of Timers: 2
• Operating Supply Voltage: 2.7 V to 3.6 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Program Memory Type: Flash
• Program Memory Size: 4 KB
• Package / Case: SOIC-8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PS028510-0111
PIR Stable (Bit 0)
Bit
Field
Control
Address
Engine Timer Tick (Bit 7)
Passive Infrared (PIR) sensor signal stabilized bit; controlled by the PIR engine.
After periods of non-use the PIR sensor will take some time to stabilize before it can be used reliably.
The amount of time is dependant on the PIR Sensor being used and environmental conditions and can
range from a few seconds up to a minute. To relieve the application software from having to assume
the worst case stabilization time, the PIR engine automatically monitors the DC offset of the PIR sensor
and sets this bit when it determines that it has become stable. This bit indicates that the PIR sensor has
stabilized after one of the following conditions:
• After initial power on (cold start).
• After re-enabling the Engine via PIR Enable Register.
• After returning from sleep mode.
PIR One Second Timer Tick
Set by the application; cleared by the PIR engine.
• This bit must be set to 1 one time per second by the user application to provide the engine with a one-
second tick to perform housekeeping operations relating to motion de tection. The engine will routinely
poll this bit to obtain a one-second tick. This bit is cleared by the engine.
0 = PIR sensor signal is not stable, motion detected events are not valid.
1 = PIR sensor signal is stable, motion detected events are valid.
0 = Cleared by the PIR engine.
1 = A one-second interval has occurred.
Timer Tick
Engine
R/W
7
Table 10. PIR Status/Control Register 1 (ePIR_SC1)
6
Frequency Response
5
Read/Write
4
ZMOTION™ Detection and Control Family
103H
3
PIR Scan
Rate
R/W
2
Product Specification
Standard API Register Set
Reserved Dual Pyro
1
0
Enable
R/W
0
25