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PIR Detector Miniaturized Module
General Description
• Optional communication interfaces: I 2 C for
Network Mode or I/O for Stand-alone Mode
Holtek’s human body infrared detector ����������
micro ����
mod�
ules, the HT7M21xx series, come fully integrated
with optical lenses, a passive infrared (PIR) sensor
and DSP algorithms. These modules include a wide
range of features such as low power consumption,
an I2C communication interface and DSP algorithms
which improve the reliability of the PIR detector.
Their application range includes home security and
surveillance system as well as basic industrial safety
detection.
• Adjustable sensing sensitivity – Network Mode
• Customisable trigger modes: Single/Continuous –
Network Mode
• Adjustable trigger output time: 16-bit×100ms –
Network Mode
• Low voltage detection: 2.0/2.2/2.4/2.7/3.0/3.3/3.6/
4.0V options – Network Mode
• Supports external optical sensors (eg. photo
transistors)
• Integrated temperature sensor with temperature
compensation
Features
• Quick stabilisation: ready for stable operation
within 12 seconds after power on
• Operating voltage: 2.7V ~ 5.5V
• Operating temperature: -10 ~ 60°C
• Low power consumption:
♦♦ Operating mode (Moving objects to be detected)
< 1.5mA
♦♦
Applications
• Security Monitoring Systems
Standby with detecting mode < 50μA (Operating
voltage 3.3V)
• Intelligent Lighting Control
• Home Appliances Energy-saving Control
• Intelligent signal recognition algorithm
• Office and Factory Equipment Automation
Block Diagram
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Mode Selection
The MODE/ACT (MODE/DT) pin is used to select the Network or Stand-alone mode. When a pull-low resistor is
externally connected between the MODE/ACT (MODE/DT) pin to the ground, the Stand-alone mode is selected.
Otherwise, the Network mode is selected if a pull-high resistor or no resistor is externally on this pin.
Network Application Circuit – Network Mode
VDD
VDD
HT7M21xx
MCU
FTS
Photo transistor
SCL
SDA
I²C Interface
150K
VSS
MODE/ACT
Interface & Pin Assignment – Network Mode
Pin #
Function
Description
1
VSS
2
VDD
Negative power supply, GND
Positive power supply
3
SDA
Serial Data Input/Output for I2C interface
4
SCL
Serial Clock Input for I2C interface
5
FTS
Photo transistor signal
6
VSS
Negative power supply, GND
7
MODE/ACT
8
TP1
Mode Selection/Motion Detection Output
No connection (Test pin)
Note: When the HT7M21xx selects Network mode and the internal enable bit ACTEN is high, the MODE/ACT
pin will output a high pulse signal with a width of 30 seconds.
Stand-alone Application Circuit – Stand-alone Mode
VDD
VCC
VDD
FTS
Photo transistor
150K
VSS
STATUS
MODE/ACT
TRO
RA=1.8K
RT
HT7M21xx
CT=0.22uF
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Interface & Pin Assignment – Stand-alone Mode
Pin #
Function
1
VSS
Negative power supply, GND
Description
2
VDD
Positive power supply
3
STATUS
4
TRO
PIR trigger output
5
FTS
Photo transistor signal
6
VSS
Negative power supply, GND
7
MODE/DT
8
TP1
Warm-up/Detecting/Low voltage status
Mode & Duration time Selection
No connection (Test pin)
The default configurations for the Stand-alone Mode are as follow:
1. Continuous trigger mode
2. The TRO pin will output a high pulse signal when an available trigger is detected. The high pulse duration is
determined by the external pull-low resistance of (RA+RT) together with the capacitance of CT with a fixed value
of 0.22μF.
External capacitance CT = 0.22uF*, VDD = 3.3V
RA+RT Resistance (Ω)
1.8K
2.2K
2.7K
3K
3.3K
3.6K
3.9K
TRO output duration time *
3sec.
10sec.
38sec.
1mins.
3mins.
5mins.
10mins.
Note: (a) The TRO output high duration is 30 seconds in default if there is no external capacitor CT.
(b) The value of the resistance, capacitance and TRO output duration time in the above table is used for ref�
erence only.
3. The STATUS pin will output various types of signals corresponding to the device in the warm-up mode, standby
detection mode or low operating voltage mode where the operating voltage is lower than 2.7V respectively.
(a) Warm-up mode: A toggle output with a frequency of 2.5Hz will be output on the STATUS pin.
STATUS
(f=2.5Hz)
(b) Standy detection mode: A signal composed of a low pulse of 10ms and a high pulse of 4s will continuously
be output on the STATUS pin.
4s
4s
STATUS
10ms
Output signal
10ms
10ms
(c) Low voltage mode: Two low pulses with a width of 10ms will first be output on the STATUS pin and the
time duration between these two low pulses is 80ms. Then a high pulse with the width of 1 second will con�
secutively be output. Such an output signal will continuously be output on the STATUS pin.
1s
STATUS
80ms
10ms
Rev. 1.20
1s
1s
80ms
10ms
Output signal
10ms
3
80ms
10ms
10ms
10ms
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Light Sensing
If there is an external component such as a photo transistor, micro solar cell or CDS device connected to the FTS
pin, the PIR module output function will be enabled when the voltage on the FTS pin is greater than 0.24×VDD.
Otherwise, the PIR module output function will be enabled in default.
A pull-high resistor with a value of 680kΩ is internally connected to the FTS pin in the PIR module. If the voltage
on the FTS pin is greater than 0.24×VDD as the internal pull-high resistor and external component are all taken into
account, the PIR module output function will be enabled. The voltage threshold to enable the PIR module output
function is fixed as 0.24×VDD in the Stand-alone mode. If the device is in the Network mode, the voltage threshold
can be adjusted by configuring the LUMI[6:0] field in the HT7M21xx device using the I2C interface.
Detection Range
With regard to the HT7M2126, the horizontal view angle is 121°, the Pitch Angle is 77° and the detection distance
has about 3.5~6 meters of visual range, as shown below.
SIDE VIEW
TOP VIEW
Horizontal
Vertical
HT7M21xx: Lenses FOV (Field of View)
In addition to the HT7M2126, the HT7M21xx series include the HT7M2136, the HT7M2156 and the HT7M2176,
etc. Different modules will support different detection distances (far or close) as well as different horizontal and
vertical viewing angles (narrow or wide).
Part Number
Viewing Angle H/V
Center Distance
Lens Color
HT7M2126
121° 77°
3.5 ~ 6 meters
Nature
HT7M2127
121° 77°
2.8 ~ 5 meters
Black
HT7M2136
91° 10°
5.5 ~ 8 meters
Nature
HT7M2156
10° 20°
8 ~ 12 meters
Nature
HT7M2176
86° 75°
5 ~ 7.5 meters
Nature
Absolute Maximum Ratings
Supply Voltage...........................................................................................................................VSS-0.3V to VSS+6.0V
Input Voltage............................................................................................................................. VSS-0.3V to VDD+0.3V
Storage Temperature...............................................................................................................................-40˚C to 80˚C
Operating Temperature...........................................................................................................................-10˚C to 60˚C
IOL Total............................................................................................................................................................. 150mA
IOH Total............................................................................................................................................................ -100mA
Total Power Dissipation................................................................................................................................... 500mW
Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maximum Ratings”
may cause substantial damage to these devices. Functional operation of these devices at other conditions
beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may
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affect devices reliability.
Electrical Characteristics
Symbol
Parameter
Ta=25°C
Test Conditions
VDD
Conditions
—
—
Min.
Typ.
Max.
Unit
VDD
Operating Voltage
2.7
3.3
5.5
V
IDD1
Operating Current
3.3V Moving objects to be detected
—
1.2
2.0
mA
IDD2
Operating Current
3.3V
Standby with detection mode,
the ACC wake-up time is 4ms.
—
30
50
μA
TPIR
PIR Stabilization Time
3.3V
—
—
12
—
s
VIL
Input Low Voltage (I/O)
—
—
0
—
0.2VDD
V
VIH
Input High Voltage (I/O)
—
—
0.8VDD
—
VDD
V
6
12
—
10
25
—
-2
-4
—
-5
-8
—
-5%
680
+5%
kΩ
+5%
V
IOL
I/O Port Sink Current
IOH
I/O Port Source Current
RPH
Pull-high Resistance (FTS)
VLVD
Low Voltage Detector Voltage
3.3V
5V
3.3V
5V
VOL=0.1VDD
VOH=0.9VDD
—
—
—
LVDEN = 1, VLVD = 2.0V
2.0
LVDEN = 1, VLVD = 2.2V
2.2
LVDEN = 1, VLVD = 2.4V
2.4
LVDEN = 1, VLVD = 2.7V
LVDEN = 1, VLVD = 3.0V
2.7
-5%
3.0
LVDEN = 1, VLVD = 3.3V
3.3
LVDEN = 1, VLVD = 3.6V
3.6
LVDEN = 1, VLVD = 4.0V
4.0
A.C. Characteristics – I2C Interface
Symbol
fSCL
Parameter
Clock Frequency
mA
mA
Ta=25°C
Test Conditions
Conditions
VDD
Min.
Typ.
Max.
Unit
—
—
—
—
400
kHz
1.3
—
—
μs
0.6
—
—
μs
tBUF
Bus Free Time
—
Time in which the bus must be free
before a new transmission can start
tHD: STA
Start Condition Hold Time
—
After this period, the first clock
pulse is generated
tLOW
SCL Low Time
—
—
1.3
—
—
μs
tHIGH
SCL High Time
—
—
0.6
—
—
μs
0.6
—
—
μs
ns
—
Time only relevant for repeated
START condition
tSU: STA
Start Condition Setup Time
tHD: DAT
Data Hold Time
—
—
0
—
—
tSU: DAT
Data Setup Time
—
—
100
—
—
ns
tR
SDA and SCL Rise Time
—
Note
—
—
0.3
μs
tF
SDA and SCL Fall Time
—
Note
—
—
0.3
μs
tSU: STO
Stop Condition Set-up time
—
—
0.6
—
—
μs
tAA
Output Valid from Clock
—
—
—
—
0.9
μs
tSP
Input Filter Time Constant
(SDA and SCL Pins)
—
—
—
50
ns
Noise suppression time
Note: These parameters are periodically sampled but not 100% tested.
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Temperature Sensor Characteristics
Symbol
Parameter
Ta=25°C
Test Conditions
VDD
Analog Voltage
—
VREFO
Bandgap Output voltage
3V
Min.
Conditions
VDD
—
Typ.
Max.
Unit
2.7
—
5.5
V
No Load
-3%
1.04
+3%
V
VTPS
Temperature Sensor Voltage
—
Bypass pre-buffer
-10%
0.91
+10%
V
Tslope
Temperature Sensor Slope
—
Bypass pre-buffer
—
3.12
—
mV/°C
Power-on Reset Characteristics
Symbol
Ta=25°C
Test Conditions
Parameter
VDD
Conditions
Min.
Typ.
Max.
Unit
VPOR
VDD Start Voltage to Ensure Power-on Reset
—
—
—
—
100
mV
RRVDD
VDD Rising Rate to Ensure Power-on Reset
—
—
0.035
—
—
V/ms
tPOR
Minimum Time for VDD Stays at VPOR to
Ensure Power-on Reset
—
—
1
—
—
ms
VDD
tPOR
RRVDD
VPOR
Time
Timing Diagrams
I2C Timing
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PIR Module Outline Dimensions
HT7M2126 – Dimensions in mm (Typical Value)
HT7M2127 – Dimensions in mm (Typical Value)
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HT7M2136 – Dimensions in mm (Typical Value)
HT7M2156 – Dimensions in mm (Typical Value)
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HT7M2176 – Dimensions in mm (Typical Value)
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Appendix A – Communication Protocol
Protocol definitions
Module I2C Address Defined
I C Address
2
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
IICA6
IICA5
IICA4
IICA3
IICA2
IICA1
IICA0
R/W
1
0
0
1
1
0
0
x
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
D7
D6
D5
D4
Register Pointer
HOST_CMD
Bit 7~4
Pointer Bit
D7~D4: Writable bits, must be fixed at “0”
Bit 7~4 must always be cleared or written to “0”. This device has additional registers that are
reserved for test and calibration. If these registers are accessed, the device may not perform
according to the specification.
Bit 3~0
Pointer Bits:
0000 = Config standby with detecting mode
0001 = Configuration register (CONFIG)
0010 = Config module address
0011 = Config Trig time interval
0100 = EEPROM access
0101 = PIR A/D RAW data
0110 = Optical sensor A/D RAW data
0111 = Temperature sensor A/D RAW data
1000 = Trig register
1001 = Manufacture ID
1010 = Device ID/Revision register
1011 = Test result inquire
1100 = Reset test result
1xxx = RFU (Note)
Note: Some registers contain calibration codes and should not be accessed. Accessing these registers could cause
permanent sensor decalibration.
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Bit Assignment Summary for all Registers
For User Mode
Register
Msb/
Pointer
Lsb
(hex)
Bit Assigment
7
6
5
4
3
2
1
0
Temp7
Temp6
Temp5
Temp4
Temp3
Temp2
Temp1
Temp0
00H
R/W
Msb
Lsb
—
—
—
—
—
—
ACC1
ACC0
01H
R/W
Msb
VLVD2
VLVD1
VLVD0
LVDEN
PirEN
D10
Trig mode
ACTEN
Lsb
Threshold2
Threshold1
Threshold0
PGAC4
PGAC3
PGAC2
PGAC1
PGAC0
02H
R/W
Msb
Lumi6
Lumi5
Lumi4
Lumi3
Lumi2
Lumi1
Lumi0
LUMIEN
Lsb
Madd6
Madd5
Madd4
Madd3
Madd2
Madd1
Madd0
D0
03H
R/W
Msb
Titv15
Titv14
Titv13
Titv12
Titv11
Titv10
Titv9
Titv8
Lsb
Titv7
Titv6
Titv5
Titv4
Titv3
Titv2
Titv1
Titv0
04H
R/W
Msb
Dbit7
Dbit6
Dbit5
Dbit4
Dbit3
Dbit2
Dbit1
Dbit0
Lsb
—
EEOK
R/W
—
EEADD3
EEADD2
EEADD1
EEADD0
05H
R
Msb
—
—
—
—
PirRAW11
PirRAW10
PirRAW9
PirRAW8
Lsb
PirRAW7
PirRAW6
PirRAW5
PirRAW4
PirRAW3
PirRAW2
PirRAW1
PirRAW0
06H
R
Msb
—
—
—
—
LumiRAW11
LumiRAW10
LumiRAW9
LumiRAW8
Lsb
LumiRAW7
LumiRAW6
LumiRAW5
LumiRAW4
LumiRAW3
LumiRAW2
LumiRAW1
LumiRAW0
07H
R
Msb
—
—
—
—
TsRAW11
TsRAW10
TsRAW9
TsRAW8
Lsb
TsRAW7
TsRAW6
TsRAW5
TsRAW4
TsRAW3
TsRAW2
TsRAW1
TsRAW0
08H
R
Msb
Ini
—
—
—
—
—
—
LVD
Lsb
BLumi
—
—
—
—
Fnoise
Fagtrg
Ftrg
09H
R
Msb
0
0
0
0
0
1
0
0
Lsb
1
1
0
1
1
0
0
1
0AH
R
Msb
Ver15
Ver14
Ver13
Ver12
Ver11
Ver10
Ver9
Ver8
Lsb
Ver7
Ver6
Ver5
Ver4
Ver3
Ver2
Ver1
Ver0
“—”: Unimplemented, read as "0".
0. Config standby with detecting mode
• Config Register → ADDRESS: 00H
Bit
15
14
13
12
11
10
9
8
Name
Temp7
Temp6
Temp5
Temp4
Temp3
Temp2
Temp1
Temp0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit
7
6
5
4
3
2
1
0
Name
—
—
—
—
—
—
ACC1
ACC0
R/W
—
—
—
—
—
—
R/W
R/W
Bit 15~8
Temp7~ Temp0: Current Temperature (°C)
Bit 7~2
Unimplemented, read as “0”
Bit 1~0
ACC1~ACC0: Define the preiod of standby with detecting mode
00: 4ms (Default)
01: 8ms
10: 16ms
11: 32ms
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1. Sensor Config Register – CONFIG
• Sensor Config Register → ADDRESS: 01H
Bit
15
14
13
12
11
10
9
8
Name
VLVD2
VLVD1
VLVD0
LVDEN
PirEN
D10
Trig mode
ACTEN
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
7
6
5
Bit
Name
R/W
Threshold2 Threshold1 Threshold0
R/W
R/W
R/W
4
3
2
1
0
PGAC4
PGAC3
PGAC2
PGAC1
PGAC0
R/W
R/W
R/W
R/W
R/W
Bit 15~13
VLVD2~VLVD0: Select LVD Voltage
000: 2.0V
001: 2.2V
010: 2.4V
011: 2.7V (Default)
100: 3.0V
101: 3.3V
110: 3.6V
111: 4.0V
Bit 12
LVDEN
1: Turn on the low voltage detection function (Default)
0: Turn off the low voltage detection function
Bit 11
PirEN
1: Enable PIR detect (Default)
0: Disable PIR detect
Bit 10
D10: Reserved bit
1: Not use, reserve for test mode
0: Not use, reserve for test mode (Default)
Bit 9
Trig mode
1: Continuous trigger (Default)
0: Single trigger
Bit 8
ACTEN
1: Enable ACT pin function (Default)
0: Disable ACT pin function
Bit 7~5
Threshold2~Threshold0
000: Threshold Trigger 1 (offset ± 0.2), (Default)
001: Threshold Trigger 2 (offset ± 0.3)
010: Threshold Trigger 3 (offset ± 0.4)
011: Threshold Trigger 4 (offset ± 0.5)
100: Threshold Trigger 5 (offset ± 0.6)
101: Threshold Trigger 6 (offset ± 0.7)
110: Threshold Trigger 7 (offset ± 0.8)
111: Threshold Trigger 8 (offset ± 0.9)
Note: lower sensitivity when at high threshold trigger.
Bit 4~0
PGAC4~PGAC0
OPA2 Gain Control: gain = 32 + (PGAC × 2), Default gain = 64
Note: Higher sensitivity when at high magnification
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1
2
3
4
5
6
7
8
1
0
0
1
1
0
0
W
1
2
3
4
5
6
7
8
0
0
0
0
0
0
0
1
SCL
SDA
S
Address Byte
A
C
K
Configuration Pointer
HT7M21xx
1
2
3
4
5
6
7
8
0
1
1
1
1
1
0
0
1
2
3
4
0
1
5
6
7
8
0
0
0
A
C
K
HT7M21xx
SCL
SDA
MSB Data
A
C
K
0
0
HT7M21xx
0
LSB Data
A
C
K
P
HT7M21xx
Note: This is an example routine: (See Appendix B: “Source Code”)
i2c_start();// send START command
i2c_write(AddressByte & 0xFE); // WRITE Command
// also, make sure bit 0 is cleared ‘0’
i2c_write(0x01);// Write CONFIG Register
i2c_write(0x7c);
// Write config data
i2c_write(0x10);
// Write config data
i2c_stop();// send STOP command
• Reading the CONFIG Register
SCL
SDA
S
1
2
3
4
5
6
7
1
0
0
1
1
0
0 W
Address Byte
SCL
SDA
S
8
2
3
4
5
6
7
8
0
0
0
0
0
0
0
1
Configuration Pointer
HT7M21xx
1
2
3
4
5
6
7
8
1
0
0
1
1
0
0
R
Address Byte
A
C
K
1
A
C
K
HT7M21xx
1
2
3
4
5
6
7
8
0
1
1
1
1
1
0
0
HT7M21xx
MSB Data
A
C
K
A
C
K
1
2
0
0
HT7M21xx
3
0
4
1
5
6
7
8
0
0
0
0
LSB Data
N
A
K
P
HT7M21xx
Note: 1. It is not necessary to select the register pointer if it was set from the previous read/write.
2. This is an example routine: (See Appendix B: “Source Code”)
i2c_start();// send START command
i2c_write(AddressByte & 0xFE); // WRITE Command
// also, make sure bit 0 is cleared ‘0’
i2c_write(0x01); // Write CONFIG Register
i2c_start(); // send Repeat START command
i2c_write(AddressByte | 0x01); // READ Command
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//
UpperByte = i2c_read(ACK); //
//
LowerByte = i2c_read(NAK); //
//
also, make sure bit 0 is set ‘1’
READ 8 bits
and Send ACK bit
READ 8 bits
and Send NAK bit
2. Config Module Address – Madd
• CONGIF MODULE ADDRESS → ADDRESS: 02H
Bit
15
14
13
12
11
10
9
8
Name
Lumi6
Lumi5
Lumi4
Lumi3
Lumi2
Lumi1
Lumi0
LUMIEN
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit
7
6
5
4
3
2
1
0
Name
Madd6
Madd5
Madd4
Madd3
Madd2
Madd1
Madd0
D0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Lumi6~Lumi0
Bit 15~9
These bits define the photo transistor A/D conversion thresholds for threshold triggering of
brightness setting.
When the value is larger, environment needs more dark (Default 1Fh).
LUMIEN
Bit 8
1: Enable Brightness detection and make it associate with PIR detect
PIR detection will be started when the brightness less than Lumi setting which is the brightness
value of the corresponding.
0: Disable Brightness detection and make it associate with PIR detect
Madd6~Madd0: Config Module I2C Address
Bit 7~1
The Address can not be changed, must be fixed as 4Ch.
D0: Reserved bit.
Bit 0
Note: Address is MSB 7 bits, bit 0 reserved.
1
2
3
4
5
6
7
8
1
0
0
1
1
0
0
W
1
2
3
4
5
6
7
8
0
0
0
0
0
0
0
1
SCL
SDA
S
Address Byte
A
C
K
Configuration Pointer
HT7M21xx
1
2
3
4
5
6
7
8
0
0
0
0
0
0
0
0
1
2
3
4
0
1
5
6
7
8
1
0
0
A
C
K
HT7M21xx
SCL
SDA
MSB Data
Rev. 1.20
A
C
K
0
HT7M21xx
14
1
0
LSB Data
A
C
K
P
HT7M21xx
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Note: This is an example routine: (See Appendix B: “Source Code”)
i2c_start(); // send START command
i2c_write(AddressByte & 0xFE); // WRITE Command
// also, make sure bit 0 is cleared ‘0’
i2c_write(0x02);// Write MADD Register
i2c_write(0x00); // Write data
i2c_write(0x54); // Write data
i2c_stop(); // send STOP command
i2c_start(); // send START command
i2c_write(0x54& 0xFE);// WRITE Command MUST use the new address
……
3. Trig Time Interval
• MODULE TRIG TIME INTERVAL → ADDRESS: 03H
Bit
15
14
13
12
11
10
9
8
Name
Titv15
Titv14
Titv13
Titv12
Titv11
Titv10
Titv9
Titv8
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit
7
6
5
4
3
2
1
0
Name
Titv7
Titv6
Titv5
Titv4
Titv3
Titv2
Titv1
Titv0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit 15~0
Titv15~Titv0
Trigger flags keep time: [Titv15:Titv0]×100ms (default 10 seconds)
Note: Ftrg flag keep time that can be used for delay switching of the lighting control products. Because
of the PIR signal characteristics, we recommend to set retention time above 500ms, otherwise
there will be a single detection trigger repeat status when using single trigger function. While the
continuity trigger that will not have this condition.
4. EEPROM ACCESS
• MODULE EEPROM ACCESS → ADDRESS: 04H
Bit
15
14
13
12
11
10
9
8
Name
Dbit7
Dbit6
Dbit5
Dbit4
Dbit3
Dbit2
Dbit1
Dbit0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit
7
6
5
4
3
2
1
0
Name
—
EEOK
R/W
—
EEADD3
EEADD2
EEADD1
EEADD0
R/W
—
R/W
R/W
—
R/W
R/W
R/W
R/W
Bit 15~8
Dbit7~Dbit0: EEPROM data
Bit 7
Unimplemented, read as 0
Bit 6
EEOK
1: Read /Write EEPROM Finish, need to clr by user
0: Read /Write command not execute yet or failed
Bit 5
R/W: EEPROM Read/Write Control
1: Read EEPROM
0: Write EEPROM
Bit 4
Rev. 1.20
Unimplemented, read as 0
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EEADD3~EEADD0: EEPROM Address
Bit 3~0
Note: 0000~1111 Addresses for custom defined.
Note: This is an example routine: (See Appendix B: “Source Code”)
i2c_start(); // send START command
i2c_write(AddressByte & 0xFE); // WRITE Command
// also, make sure bit 0 is cleared ‘0’
i2c_write(0x04);// Write EEPROM Register
i2c_write(0x05);// Write data(Write mode,Write address 0x05)
i2c_write(0xAA);// Write data(Write data 0xAA)
i2c_stop();// send STOP command
i2c_start();//
i2c_write(AddressByte & 0xFE); //
//
i2c_write(0x04);//
i2c_write(0x25);//
i2c_write(0x00);//
i2c_stop();
send START command
WRITE Command
also, make sure bit 0 is cleared ‘0’
Write EEPROM Register
Write data(Read mode,read address 0x05)
Write data(Write any data will not affect result)
i2c_start();//
i2c_write(AddressByte & 0xFE); //
//
i2c_write(0x04);//
i2c_start();//
i2c_write(AddressByte | 0x01); //
//
UpperByte = i2c_read(ACK); //
//
LowerByte = i2c_read(NAK); //
//
send START command
WRITE Command
also, make sure bit 0 is cleared ‘0’
Write EEPROM Register
send Repeat START command
READ Command
also, make sure bit 0 is set ‘1’
READ 8 bits (UpperByte = 0x25)
and Send ACK bit
READ 8 bits (LowerByte = 0xAA)
and Send NAK bit
5. PIR RAW DATA
• PIR A/D CONVERSION RAW DATA → ADDRESS: 05H
Bit
15
14
13
12
11
10
9
8
Name
—
—
—
—
PirRAW11
PirRAW10
PirRAW9
PirRAW8
R/W
—
—
—
—
R
R
R
R
Bit
7
6
5
4
3
2
1
0
Name
PirRAW7
PirRAW6
PirRAW5
PirRAW4
PirRAW3
PirRAW2
PirRAW1
PirRAW0
R/W
R
R
R
R
R
R
R
R
Bit 15~12
Unimplemented read as 0
Bit 11~0
PirRAW11~PirRAW0: Pir Signal A/D Conversion Raw data
Note: Can be used for developed recognition algorithms or for custom define recognition function.
Recommended polling time is greater than 4ms.
Note: This is an example routine: (See Appendix B: “Source Code”)
i2c_start();// send START command
i2c_write(AddressByte & 0xFE); // WRITE Command
// also, make sure bit 0 is cleared ‘0’
i2c_write(0x05);// Write PIRRAW Register
i2c_start();// send Repeat START command
i2c_write(AddressByte | 0x01); // READ Command
// also, make sure bit 0 is set ‘1’
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UpperByte = i2c_read(ACK); //
//
LowerByte = i2c_read(NAK); //
//
READ 8 bits (UpperByte = High 4bit)
and Send ACK bit
READ 8 bits (LowerByte = Low 8bit)
and Send NAK bit
6. Optical Sensor RAW DATA
• Optical Sensor A/D CONVERSION RAW DATA → ADDRESS: 06H
Bit
15
14
13
12
Name
—
—
—
—
R/W
—
—
—
—
Bit
Name
R/W
Bit 15~12
Bit 11~0
7
6
5
11
10
9
8
LumiRAW11 LumiRAW10 LumiRAW9 LumiRAW8
R
4
3
R
R
R
2
1
0
LumiRAW7 LumiRAW6 LumiRAW5 LumiRAW4 LumiRAW3 LumiRAW2 LumiRAW1 LumiRAW0
R
R
R
R
R
R
R
R
Unimplemented read as 0
LumiRAW11~LumiRAW0: Optical Sensor Signal A/D Conversion Raw Data
Note: To Read the environment brightness value that can be used to setting brightness threshold
value.
(To read special brightness and then to write in lumi (02H Msb) registers)
Note: This is an example routine: (See Appendix B: “Source Code”)
i2c_start();// send START command
i2c_write(AddressByte & 0xFE); // WRITE Command
// also, make sure bit 0 is cleared ‘0’
i2c_write(0x06); // Write PHORAW Register
i2c_start();// send Repeat START command
i2c_write(AddressByte | 0x01); // READ Command
// also, make sure bit 0 is set ‘1’
UpperByte = i2c_read(ACK); // READ 8 bits (UpperByte = High 4bit)
// and Send ACK bit
LowerByte = i2c_read(NAK); // READ 8 bits (LowerByte = Low 8bit)
// and Send NAK bit
7. Temperature RAW DATA
• Temperature Sensor A/D CONVERSTION RAW DATA → ADDRESS: 07H
Bit
15
14
13
12
11
10
9
8
Name
—
—
—
—
TsRAW11
TsRAW10
TsRAW9
TsRAW8
R/W
—
—
—
—
R
R
R
R
Bit
7
6
5
4
3
2
1
0
Name
TsRAW7
TsRAW6
TsRAW5
TsRAW4
TsRAW3
TsRAW2
TsRAW1
TsRAW0
R/W
R
R
R
R
R
R
R
R
Bit 15~12
Unimplemented read as 0
Bit 11~0
TsRAW11~TsRAW0: Temperature Signal A/D Conversion Raw data
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• Temperature sensor Specifications
Symbol
Parameter
Condition
Min.
Typ.
Max.
Unit
—
2.7
—
5.5
V
No load @ 3V
-3%
1.04
+3%
V
Temperature Sensor Voltage
—
-10%
0.91
+10%
V
Temp. sensor Slope
—
—
3.12
—
mV/°C
VDD
Analog Voltage
VREFO
Bandgap output voltage
VTPS
Tslope
Note: This is an example routine: (See Appendix B: “Source Code”)
i2c_start();// send START command
i2c_write(AddressByte & 0xFE); // WRITE Command
// also, make sure bit 0 is cleared ‘0’
i2c_write(0x07); // Write TSRAW Register
i2c_start(); // send Repeat START command
i2c_write(AddressByte | 0x01); // READ Command
// also, make sure bit 0 is set ‘1’
UpperByte = i2c_read(ACK); // READ 8 bits (UpperByte = High 4bit)
// and Send ACK bit
LowerByte = i2c_read(NAK); // READ 8 bits (LowerByte = Low 8bit)
// and Send NAK bit
8. Module Status
• MODULE STATUS → ADDRESS: 08H
Bit
15
14
13
12
11
Name
Ini
—
—
—
—
R/W
R
—
—
—
—
10
9
8
—
—
LVD
—
—
R
Bit
7
6
5
4
3
2
1
0
Name
BLumi
—
—
—
—
Fnoise
Fagtrg
Ftrg
R/W
R
—
—
—
—
R
R
R
Bit 15
Ini
1: module initialing/module initial failed
0: module initial ok
Bit 14~9
Unimplemented read as 0
Bit 8
LVD
1: Low Voltage Detect
0: No Low Voltage Detect
Bit 7
BLumi
1: Night, darkness detected
0: Day, brightness detected
Bit 6~3
Unimplemented read as 0
Bit 2
Fnoise
1: PIR noise detected
0: No PIR noise detected
Bit 1
Fagtrg
1: PIR trig again (notice: This bit can be trig when Trig mode = 1)
0: No PIR trig again
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Ftrg
Bit 0
1: PIR Trigged
0: No PIR Trigged
Note: This is an example routine: (See Appendix B: “Source Code”)
i2c_start();// send START command
i2c_write(AddressByte & 0xFE); // WRITE Command
// also, make sure bit 0 is cleared ‘0’
i2c_write(0x08); // Write PIRRAW Register
i2c_start(); // send Repeat START command
i2c_write(AddressByte | 0x01); // READ Command
// also, make sure bit 0 is set ‘1’
UpperByte = i2c_read(ACK); // READ 8 bits (UpperByte = MSB)
// and Send ACK bit
LowerByte = i2c_read(NAK); // READ 8 bits (LowerByte =LSB)
// and Send NAK bit
9. Manufacture ID
• MANUFACTURE ID (MID) → ADDRESS: 09H
Bit
15
14
13
12
11
10
9
8
Name
0
0
0
0
0
1
0
0
R/W
R
R
R
R
R
R
R
R
Bit
7
6
5
4
3
2
1
0
Name
1
1
0
1
1
0
0
1
R/W
R
R
R
R
R
R
R
R
Bit 15~0
Manufacture ID = 0x04D9
Note: This is an example routine: (See Appendix B: “Source Code”)
i2c_start();// send START command
i2c_write(AddressByte & 0xFE); // WRITE Command
// also, make sure bit 0 is cleared ‘0’
i2c_write(0x09); // Write MID Register
i2c_start(); // send Repeat START command
i2c_write(AddressByte | 0x01); // READ Command
// also, make sure bit 0 is set ‘1’
UpperByte = i2c_read(ACK); // READ 8 bits (UpperByte = 0x04)
// and Send ACK bit
LowerByte = i2c_read(NAK); // READ 8 bits (LowerByte = 0xd9)
// and Send NAK bit
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10. Firmware Version
• Firmware Version → ADDRESS: 0AH
Bit
15
14
13
12
11
10
9
8
Name
Ver15
Ver14
Ver13
Ver12
Ver11
Ver10
Ver9
Ver8
R/W
R
R
R
R
R
R
R
R
Bit
7
6
5
4
3
2
1
0
Name
Ver7
Ver6
Ver5
Ver4
Ver3
Ver2
Ver1
Ver0
R/W
R
R
R
R
R
R
R
R
Bit 15~0
Ver15~Ver0: Firmware Version
Note: This is an example routine: (See Appendix B: “Source Code”)
i2c_start();// send START command
i2c_write(AddressByte & 0xFE); // WRITE Command
// also, make sure bit 0 is cleared ‘0’
i2c_write(0x0a); // Write PID Register
i2c_start(); // send Repeat START command
i2c_write(AddressByte | 0x01); // READ Command
// also, make sure bit 0 is set ‘1’
UpperByte = i2c_read(ACK); // READ 8 bits (UpperByte = 0x02)
// and Send ACK bit
LowerByte = i2c_read(NAK); // READ 8 bits (LowerByte = 0x00)
// and Send NAK bit
• EEPROM Planning
The storage area is used to record the user-defined data
00h: user define
01h: user define
02h: user define
03h: user define
04h: user define
05h: user define
06h: user define
07h: user define
08h: user define
09h: user define
0Ah: user define
0Bh: user define
0Ch: user define
0Dh: user define
0Eh: user define
0Fh: user define
Note: EEPROM 16×8
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Appendix B
/*****************************************************************
FileName: I2C.c
Processor:HT66F60 Microcontrollers
Complier: IDE-3000 V7.71 V2 compiler
Company: holtek semiconductor .Inc
#include <HT66F60.h> // This code is developed for HT66F
//It can be modified to be used with any HTmicro With GPIO
/** PRIVATE PROTOTYPES**********************************/
void i2c_init(void);
void i2c_start(void);
void i2c_stop(void);
unsigned char i2c_wait_ack ()
void i2c_ack()
void i2c_nack()
unsigned char i2c_write( unsigned char txd );
unsigned char i2c_read( unsigned char ack );
#define SDA_IN() _pcc3=1
#define SDA_OUT() _pcc3=0
#define SDA_PUH() _pcpu3 = 1
#define IIC_SDA
_pc3 //SDA
#define READ_SDA _pc3 //SDA
#define SCL_IN() _pcc4 = 1
#define SCL_OUT() _pcc4 = 0
#define SCL_PUH() _pcpu4 = 1
#define IIC_SCL
_pc4 //SCL
#define READ_SCL _pc4
/*****************************************************************
* Function Name: i2c_init
* Return Value: void
* Parameters: Set IO status
* Description: This function sets up
* HT66F device for use with a IO simulate I2C
*****************************************************************/
void i2c_init(void) {
SCL_OUT();//scl set output
SDA_OUT();//sda set output
SCL_PUH();
SDA_PUH();}
/********************************************************************
* Function Name: i2c_start
* Return Value: void
* Parameters: void
* Description: Send I2C Start Command
********************************************************************/
void i2c_start(void) {
SDA_OUT();//sda output setting
IIC_SDA=1;
IIC_SCL_H(); //IIC_SCL=1;
_delay(4);
IIC_SDA=0; //START:when CLK is high,DATA change form high to low
_delay(4);
IIC_SCL_L();}
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/********************************************************************
* Function Name: i2c_stop
* Return Value: void
* Parameters: void
* Description: Send I2C Stop command
********************************************************************/
void i2c_stop(void) {
SDA_OUT(); //sda output
IIC_SCL_L(); //IIC_SCL=0;
IIC_SDA=0; //STOP:when CLK is high DATA change form low to high
_delay(4);
IIC_SCL_H();
IIC_SDA=1;
_delay(4);
}
/********************************************************************
* Function Name: i2c_write
* Return Value:
* Parameters: Single data byte for I2C2 bus.
* Description: This routine writes a single byte to the
* I2C2 bus.
********************************************************************/
void i2c_write( unsigned char txd ) {
uint8 t,buf;
SDA_OUT();
IIC_SCL_L();//IIC_SCL=0;
for(t=0;t<8;t++)
{
buf=txd&0x80;
IIC_SDA = buf>>7;//IIC_SDA=(txd&0x80)>>7;
txd<<=1;
_delay(2);
IIC_SCL_H();//IIC_SCL=1;
_delay(2);
IIC_SCL_L();//IIC_SCL=0;
_delay(2);
}
}
/********************************************************************
* Function Name: i2c_read
* Return Value: read iic data
* Parameters: ack = 1 and nak = 0
* Description: Read a byte from I2C bus and ACK/NAK device
********************************************************************/
unsigned char i2c_read( unsigned char ack ) {
unsigned char i,receive=0;
SDA_IN();
for(i=0;i<8;i++ )
{
IIC_SCL_L();//IIC_SCL=0;
_delay(2);
IIC_SCL_H();//IIC_SCL=1;
receive<<=1;
if(READ_SDA)receive++;
_delay(2);
}
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if (ack)
i2c_ack();
else
i2c_nack();
return receive;
//send ACK
//send ACK
}
/********************************************************************
* Function Name: i2c_wait_ack
* Return Value: 1:get ack success ,0:get ack failed
* Parameters:
* Description: wait ack from i2c bus
********************************************************************/
unsigned char i2c_wait_ack ()
{
uint8 ucErrTime=0;
SDA_IN();
IIC_SDA=1;_delay(1);
IIC_SCL_H();//IIC_SCL=1;
_delay(1);
while(READ_SDA)
{
ucErrTime++;
if(ucErrTime>50)
{
IIC_Stop();
return 1;
}
_delay(1);
}
IIC_SCL_L(); //IIC_SCL=0;
return 0;
}
/********************************************************************
* Function Name: i2c_ack
* Return Value:
* Parameters:
* Description: generate ack to i2c bus
********************************************************************/
void i2c_ack()
{
IIC_SCL_L(); //IIC_SCL=0;
SDA_OUT();
IIC_SDA=0;
_delay(2);
IIC_SCL_H(); //IIC_SCL=1;
_delay(2);
IIC_SCL_L(); //IIC_SCL=0;
}
/********************************************************************
* Function Name: i2c_ nack
* Return Value:
* Parameters:
* Description: generate nack to i2c bus
********************************************************************/
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void i2c_nack()
{
IIC_SCL_L();
SDA_OUT();
IIC_SDA=1;
_delay(2);
IIC_SCL_H();
_delay(2);
IIC_SCL_L();
}
Rev. 1.20
//IIC_SCL=0;
//IIC_SCL=1;
//IIC_SCL=0;
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Copyright© 2016 by HOLTEK SEMICONDUCTOR INC.
The information appearing in this Data Sheet is believed to be accurate at the time
of publication. However, Holtek assumes no responsibility arising from the use of
the specifications described. The applications mentioned herein are used solely
for the purpose of illustration and Holtek makes no warranty or representation that
such applications will be suitable without further modification, nor recommends
the use of its products for application that may present a risk to human life due to
malfunction or otherwise. Holtek's products are not authorized for use as critical
components in life support devices or systems. Holtek reserves the right to alter
its products without prior notification. For the most up-to-date information, please
visit our web site at http://www.holtek.com.tw.
Rev. 1.20
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