Fermion TMF8801 ToF Distance Ranging Sensor (20-2500mm) - Datasheet
Table Of Contents
- Content Guide
- 1 General Description
- 2 Ordering Information
- 3 TMF8801 Module Description
- 4 Absolute Maximum Ratings
- 5 Electrical Characteristics
- 6 Typical Operating Characteristics
- 7 Functional Description
- 8 Register Description
- 8.1 APPID Register (Address 0x00)
- 8.2 APPREV_MAJOR Register (Address 0x01)
- 8.3 APPREQID Register (Address 0x02)
- 8.4 ENABLE Register (Address 0xE0)
- 8.5 INT_STATUS Register (Address 0xE1)
- 8.6 INT_ENAB Register (Address 0xE2)
- 8.7 ID Register (Address 0xE3)
- 8.8 REVID Register (Address 0xE4)
- 8.9 App0 Registers – appid=0xC0
- 8.9.1 CMD_DATA9 Register (Address 0x06)
- 8.9.2 CMD_DATA8 Register (Address 0x07)
- 8.9.3 CMD_DATA7 Register (Address 0x08)
- 8.9.4 CMD_DATA6 Register (Address 0x09)
- 8.9.5 CMD_DATA5 Register (Address 0x0A)
- 8.9.6 CMD_DATA4 Register (Address 0x0B)
- 8.9.7 CMD_DATA3 Register (Address 0x0C)
- 8.9.8 CMD_DATA2 Register (Address 0x0D)
- 8.9.9 CMD_DATA1 Register (Address 0x0E)
- 8.9.10 CMD_DATA0 Register (Address 0x0F)
- 8.9.11 COMMAND Register (Address 0x10)
- 8.9.12 PREVIOUS Register (Address 0x11)
- 8.9.13 APPREV_MINOR Register (Address 0x12)
- 8.9.14 APPREV_PATCH Register (Address 0x13)
- 8.9.15 STATUS Register (Address 0x1D)
- 8.9.16 REGISTER_CONTENTS Register (Address 0x1E)
- 8.9.17 TID Register (Address 0x1F)
- 8.9.18 Object Detection Results – If Register register_contents = 0x55 (commands 0x02, 0x03 or 0x04)
- RESULT_NUMBER Register (Address 0x20)
- RESULT_INFO Register (Address 0x21)
- DISTANCE_PEAK_0 Register (Address 0x22)
- DISTANCE_PEAK_1 Register (Address 0x23)
- SYS_CLOCK_0 Register (Address 0x24)
- SYS_CLOCK_1 Register (Address 0x25)
- SYS_CLOCK_2 Register (Address 0x26)
- SYS_CLOCK_3 Register (Address 0x27)
- STATE_DATA_0 Register (Address 0x28)
- STATE_DATA_1 Register (Address 0x29)
- STATE_DATA_2 Register (Address 0x2A)
- STATE_DATA_3 Register (Address 0x2B)
- STATE_DATA_4 Register (Address 0x2C)
- STATE_DATA_5 Register (Address 0x2D)
- STATE_DATA_6 Register (Address 0x2E)
- STATE_DATA_7 Register (Address 0x2F)
- STATE_DATA_8_XTALK_MSB Register (Address 0x30)
- STATE_DATA_9_XTALK_LSB Register (Address 0x31)
- STATE_DATA_10_TJ Register (Address 0x32)
- REFERENCE_HITS_0 Register (Address 0x33)
- REFERENCE_HITS_1 Register (Address 0x34)
- REFERENCE_HITS_2 Register (Address 0x35)
- REFERENCE_HITS_3 Register (Address 0x36)
- OBJECT_HITS_0 Register (Address 0x37)
- OBJECT_HITS_1 Register (Address 0x38)
- OBJECT_HITS_2 Register (Address 0x39)
- OBJECT_HITS_3 Register (Address 0x3A)
- 8.9.19 Calibration and Algorithm State Data Exchange
- FACTORY_CALIB_0 Register (Address 0x20)
- FACTORY_CALIB_1 Register (Address 0x21)
- FACTORY_CALIB_2 Register (Address 0x22)
- FACTORY_CALIB_3 Register (Address 0x23)
- FACTORY_CALIB_4 Register (Address 0x24)
- FACTORY_CALIB_5 Register (Address 0x25)
- FACTORY_CALIB_6 Register (Address 0x26)
- FACTORY_CALIB_7 Register (Address 0x27)
- FACTORY_CALIB_8 Register (Address 0x28)
- FACTORY_CALIB_9 Register (Address 0x29)
- FACTORY_CALIB_10 Register (Address 0x2A)
- FACTORY_CALIB_11 Register (Address 0x2B)
- FACTORY_CALIB_12 Register (Address 0x2C)
- FACTORY_CALIB_13 Register (Address 0x2D)
- STATE_DATA_WR_0 Register (Address 0x2E)
- STATE_DATA_WR_1 Register (Address 0x2F)
- STATE_DATA_WR_2 Register (Address 0x30)
- STATE_DATA_WR_3 Register (Address 0x31)
- STATE_DATA_WR_4 Register (Address 0x32)
- STATE_DATA_WR_5 Register (Address 0x33)
- STATE_DATA_WR_6 Register (Address 0x34)
- STATE_DATA_WR_7 Register (Address 0x35)
- STATE_DATA_WR_8 Register (Address 0x36)
- STATE_DATA_WR_9 Register (Address 0x37)
- STATE_DATA_WR_10 Register (Address 0x38)
- 8.9.20 Raw Histogram Output – If Register register_contents=0x80…0x93
- 8.9.21 Serial Number Readout – If Register register_contents=0x47
- 8.10 Bootloader Registers – appid=0x80
- 9 Application Information
- 10 Package Drawings & Markings
- 11 Tape & Reel Information
- 12 Soldering & Storage Information
- 13 Laser Eye Safety
- 14 Revision Information
- 15 Legal Information
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TMF8801
Functional Description
Datasheet • PUBLIC
DS000648 • v8-00 • 2021-Jul-08
69 │ 13
7 Functional Description
7.1 I²C Protocol
The TMF8801 is controlled by an I²C bus, one interrupt pin and two GPIO pins.
The device uses I²C serial communication protocol for communication. The device supports 7-bit chip
addressing and standard, fast mode and fast mode plus modes. Read and Write transactions comply
with the standard set by Philips (now NXP). For a complete description of the I²C protocol, please
review the NXP I²C design specification.
Internal to the device, an 8-bit buffer stores the register address location of the byte to read or write.
This buffer auto-increments upon each byte transfer and is retained between transaction events (i.e.
valid even after the master issues a STOP and the I²C bus is released). During consecutive Read
transactions, the future/repeated I²C Read transaction may omit the memory address byte normally
following the chip address byte; the buffer retains the last register address +1.
A Write transaction consists of a START, CHIP-ADDRESSWRITE, REGISTER-ADDRESSWRITE,
DATA BYTE(S), and STOP. Following each byte (9TH clock pulse) the slave places an
ACKNOWLEDGE/NOT- ACKNOWLEDGE (ACK/NACK) on the bus. If NACK is transmitted by the
slave, the master may issue a STOP.
A Read transaction consists of a START, CHIP-ADDRESSWRITE, REGISTER-ADDRESS,
RESTART, CHIP-ADDRESSREAD, DATA BYTE(S), and STOP. Following all but the final byte the
master places an ACK on the bus (9TH clock pulse). Termination of the Read transaction is indicated
by a NACK being placed on the bus by the master, followed by STOP.
The default I²C address is 0x41. The address can be changed after power-up. Use the enable pin to
enable only one device at a time to provide unique device addresses.
7.2 System Parameters
The on-chip microprocessor is a Cortex M0 µP.