ZMOT0BSB1A0AG Zilog, ZMOT0BSB1A0AG Datasheet - Page 33

• Manufacturer Part Number: ZMOT0BSB1A0AG
• Description: Processors - Application Specialized ZMB Nic RE200B-P Pyr Nic. NCL-9(26) Lens
• Manufacturer: Zilog

Specifications of ZMOT0BSB1A0AG

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

PS028511-0112
Frequency Response (Bits 6–3)
PIR Scan Rate (Bit 2)
Frequency Response of PIR engine; controlled by Application
Range: 0h–Ch
• This value determines the frequency response of the motion detection system. Higher values allow
• The frequency of the signal that is presented to the PIR engine is largely dependent on the structure
Note: Lower programmed values also have the effect of reducing the relative range of detection.
PIR ADC conversion rate for the Pyroelectric Sensor; controlled by the application.
• The PIR engine performs the necessary ADC conversions on the PIR sensor input. Each conversion
• In NORMAL SCAN RATE Mode (PIR Scan Rate set to 0), the Z8FS040 ADC peripheral is set to
• When LOW SCAN RATE Mode is selected by setting this bit to a 1, CONTINUOUS CONVERSION
• In LOW SCAN RATE Mode, the ADC is disabled between conversions to reduce power consumption.
• Although the LOW SCAN RATE Mode provides the application with more processing power and the
• If the PIR Scan Rate bit is changed during engine operation, the engine will stop detecting motion for
lower frequencies to be accepted by the PIR engine. Lower values cause the Engine to ignore targets
that generate lower frequencies. These targets typically include horizontally oriented objects such as
pets.
of the PIR lens being used (number and dispersion of beams). A lens with several evenly distributed
beams provides better frequency response performance than a lens with an uneven beam
distribution. 
generates an interrupt that is processed by the PIR engine from the EPIR_ADC_ISR macro. The PIR
Scan Rate bit determines the rate at which the ADC conversions are generated.
CONTINUOUS CONVERSION Mode, which causes a conversion to be carried out automatically
every 256 system clocks. In this mode, the application is only required to execute the EPIR_ADC_ISR
macro for each ADC interrupt. The ADC continually runs and continuously generates interrupts.
Mode is disabled and the ADC is operated in SINGLE-SHOT Mode such that each conversion takes
5129 system clocks to complete. In this mode, the application software must initiate the ADC
conversion request (set bit 7 of ADCCTL0) and execute the EPIR_ADC_ISR macro once every 5mS.
Power consumption can be reduced further if the application software uses this mode in conjunction
with the CPU’s Halt or Stop modes. Alternately, this mode can be used to provide the application
software with additional CPU processing time.
opportunity for the system to reduce power consumption, the normal scan rate will provide better
sensitivity and range. While operating in LOW SCAN RATE Mode, sensitivity is reduced by
approximately 20%. The performance of Direction Detection may also be reduced in this mode. EMC
immunity is disabled while in LOW SCAN RATE Mode.
up to 200mS to avoid potential false motion detection. When changing the PIR SCAN RATE Mode,
the Advanced API registers must first be updated with the appropriate values.
0 = NORMAL SCAN RATE Mode
1 = LOW SCAN RATE Mode
ZMOTION™ Detection and Control Family
Product Specification
Standard API Register Set
26