Rev. 1.20

15

June 17, 2016

HT7M2126/27/36/56/76

Note:Thisisanexampleroutine:(SeeAppendixB:“SourceCode”)

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

Triggerflagskeeptime:[Titv15:Titv0]×100ms(default10seconds)

Note:Ftrgflagkeeptimethatcanbeusedfordelayswitchingofthelightingcontrolproducts.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/WriteEEPROMFinish,needtoclrbyuser

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

Unimplemented, read as 0