ZEPIR000101ZCOG Zilog, ZEPIR000101ZCOG Datasheet - Page 11

• Manufacturer Part Number: ZEPIR000101ZCOG
• Description: BOARD COMPUTER SGL EPIR ZDOT
• Manufacturer: Zilog
• Series: Zdots® SBCr

Specifications of ZEPIR000101ZCOG

• Sensor Type: Motion, PIR (Pyroelectric Infrared)
• Sensing Range: 5m x 5m, 60 Degree Detection Pattern
• Interface: UART or Hardware
• Sensitivity: Adjustable
• Voltage - Supply: 2.7 V ~ 3.6 V
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: ZEPIR0AAS01SBCG
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 269-4711

UM022305-1110
Ambient Light Threshold (AMBIENT Potentiometer)
In various lighting control applications, the decision of when to turn ON the lights can depend
on the current ambient light level in addition to detecting motion. A CDS photocell is provided
on the kit to demonstrate this function. When light shines on the photocell, its resistance
decreases providing a lower voltage to the light gate (LG) signal on the ZMOTION
Module. When the module detects this voltage to be below 1.0 V in Hardware Mode or the
programmed threshold in Serial Mode, the MOTION LED (/MD signal) will not activate when
motion is detected. The AMBIENT potentiometer (R6) sets the amount of ambient light
required to cross the threshold.
Sensitivity (SENS Potentiometer)
The amount of motion required to trigger the MOTION LED (/MD signal) can be adjusted using
the SENS potentiometer (R3). This also has the effect of controlling the range that the detector
can ‘see’—lower sensitivity reduces the range of the detection pattern. The SENS
potentiometer provides a voltage between 0 V and 1.8 V to the TXD/SNS signal on the
ZMOTION
potentiometer is used only in Hardware Interface Mode. In Serial Interface Mode, the
sensitivity is set via commands sent over the serial interface.
/MD Output Delay Time (DELAY Potentiometer)
The amount of time that the MOTION LED (/MD signal) is activated can be controlled by the
DELAY (R4) potentiometer. You can set this time between 2 seconds and 15 minutes. This
feature is typically used in power control applications where the amount of time that a device is
activated needs to be controlled. The potentiometer provides a voltage between 0 V and 1.8 V
to the RXD/DELAY input on the ZMOTION
longer activation time.
8. During this stabilization time, the module still accepts commands over the serial
9. Send the follow commands to the module to put it into a convenient testing mode
10. Create some motion in front of the ZMOTION
11. Also notice that an uppercase ‘M’ was transmitted from the module.
12. Test other commands and status listed in PS0284. This has a complete list and
interface.
(without the quotations or comma):
Blue LED turns on for 2 seconds.
description of all commands supported.
TM
Detection Module. A higher voltage means lower sensitivity. The SENS
‘C’, ‘M’
‘K’, ‘A’
‘M’, ‘Y’
Configure the MD/RST pin as MD (causes the Blue LED to turn on
Enable ASCII command mode.
Send motion status automatically over the serial interface
when motion is detected.
(without polling).
TM
Detection Module. A higher voltage gives a
ZMOTION
TM
Detection Module and observe that the
TM
Detection Module Evaluation Kit
TM
User Manual
Detection
11