
[AK09912]
MS1547-E-02 2014/7
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3. Table of Contents
1. Features .............................................................................................................................. 1
2. Overview .............................................................................................................................. 2
3. Table of Contents ................................................................................................................. 3
4. Circuit Configuration ............................................................................................................ 5
4.1. Block Diagram .............................................................................................................. 5
4.2. Block Function .............................................................................................................. 5
4.3. Pin Function .................................................................................................................. 6
5. Overall Characteristics ........................................................................................................ 7
5.1. Absolute Maximum Ratings .......................................................................................... 7
5.2. Recommended Operating Conditions .......................................................................... 7
5.3. Electrical Characteristics .............................................................................................. 7
5.3.1. DC Characteristics ................................................................................................. 7
5.3.2. AC Characteristics ................................................................................................. 8
5.3.3. Analog Circuit Characteristics ................................................................................ 9
5.3.4. 4-wire SPI ............................................................................................................. 10
5.3.5. I2C Bus Interface .................................................................................................. 11
6. Function Explanation ......................................................................................................... 14
6.1. Power States ............................................................................................................... 14
6.2. Reset Functions .......................................................................................................... 14
6.3. Operation Mode .......................................................................................................... 15
6.4. Description of Each Operation Mode ......................................................................... 16
6.4.1. Power-down Mode ............................................................................................... 16
6.4.2. Single Measurement Mode .................................................................................. 16
6.4.3. Continuous Measurement Mode 1, 2, 3 and 4 .................................................... 17
6.4.4. External Trigger Measurement Mode .................................................................. 20
6.4.5. Self-test Mode ...................................................................................................... 20
6.4.6. Fuse ROM Access Mode ..................................................................................... 20
6.5. Temperature Sensor ................................................................................................... 21
6.6. Noise Suppression Filter (NSF) .................................................................................. 21
7. Serial Interface .................................................................................................................. 22
7.1. 4-wire SPI ................................................................................................................... 22
7.1.1. Writing Data.......................................................................................................... 22
7.1.2. Reading Data ....................................................................................................... 23
7.2. I2C Bus Interface ......................................................................................................... 24
7.2.1. Data Transfer ....................................................................................................... 24
7.2.2. WRITE Instruction ................................................................................................ 26
7.2.3. READ Instruction.................................................................................................. 27
7.3. High-speed Mode (Hs-mode) ..................................................................................... 28
8. Registers ........................................................................................................................... 29
8.1. Description of Registers ............................................................................................. 29
8.2. Register Map .............................................................................................................. 30
8.3. Detailed of Description of Register ............................................................................. 31
8.3.1. WIA: Who I Am ..................................................................................................... 31
8.3.2. RSV: Reserved .................................................................................................... 31
8.3.3. ST1: Status 1 ........................................................................................................ 31
8.3.4. HXL to HZH: Measurement Data ......................................................................... 32
8.3.5. TMPS: Temperature Data .................................................................................... 33
8.3.6. ST2: Status 2 ........................................................................................................ 33
8.3.7. CNTL1: Control 1 ................................................................................................. 34
8.3.8. CNTL2: Control 2 ................................................................................................. 34
8.3.9. CNTL3: Control 3 ................................................................................................. 35
8.3.10. TS1, TS2, TS3: Test ........................................................................................... 35
8.3.11. I2CDIS: I2C Disable ............................................................................................ 36
8.3.12. TS4: Test 4 ......................................................................................................... 36
8.3.13. ASAX, ASAY, ASAZ: Sensitivity Adjustment Values .......................................... 36
9. Example of Recommended External Connection ............................................................. 37