A list of I²C devices that I've come across when working with Sun and Alpha hardware. Not complete by any means. Mainly a way to discover which devices might be at a particular address.

To search these devices by I²C address, use I²C Address Lookup

Note, that an I²C bus translator can alter the apparent addresses of a device. For example, Sun Fire computers also use address 0x28 for the AT24C64 NVRAM/IDPROM, and addresses 0x58 to 0x77 for SPD memory and other EEPROM's via the SUNW,i2c-imax bridge/expander.

I²C references:

UM10204: I²C-bus specification and user manual
AN10216: I²C Manual
Bridge/Expander
Device Address range Product Page Data Sheet Notes
SUNW,i2c-imax 0x09, 0x0b, 0x0c, 0x12, 0x30 unknown unknown 1
Clock Generator
Device Address range Product Page Data Sheet Notes
ICS951601 0x6e unknown 951601-datasheet.pdf  
ICS9FG108 0x6e 8-output PCIe Gen1-2 Synthesizer | IDT 9fg108e-datasheet.pdf  
Controller
Device Address range Product Page Data Sheet Notes
PCF8584 Programmable PCF8584 :: NXP Semiconductors PCF8584.pdf  
Sun JBus I2C N/A unknown Fire_Reference_Manual.pdf, PIO_ref_manual.pdf 2
Mentor Graphics I²C, Sun Fire I²C, Marvell MV78230 I²C, Allwinner Sun4i I²C N/A unknown Mentor_Graphics_MI2CV.pdf  
DECchip 21272 Core Logic chipset I2C controller N/A unknown ds-0025a-te_tsunami_typhoon_21272_hrm.pdf 2
DAC
Device Address range Product Page Data Sheet Notes
PCF8591 0x48 to 0x4f PCF8591 :: NXP Semiconductors PCF8591.pdf  
TDA8444 0x40, 0x42, 0x44, 0x46, 0x48, 0x4a, 0x4c, 0x4e unknown TDA8444.pdf  
EEPROM
Device Address range Product Page Data Sheet Notes
AT24C01, AT24C02, AT24C04, AT24C08, AT24C16 0x50 to 0x57 unknown doc0180.pdf 3
AT24C32, AT24C64 0x50 to 0x57 unknown doc0336.pdf  
AT34C02 0x50 to 0x57 and 0x30 to 0x37 unknown doc0958.pdf  
PCF8582C 0x50 to 0x57 PCF8582C-2 :: NXP Semiconductors PCF8582C_2.pdf  
SPD memory 0x50 to 0x57 Memory Configurations: JESD21-C | JEDEC varies  
GPIO
Device Address range Product Page Data Sheet Notes
FM3560 0x37, 0x4e unknown FM3560.pdf  
PCF8574, PCF8574A 0x20 to 0x27, 0x38 to 0x3f PCF8574 :: NXP Semiconductors PCF8574_PCF8574A.pdf  
PCA9555 0x20 to 0x27 PCA9555 :: NXP Semiconductors PCA9555.pdf  
PCA9556 0x18 to 0x1f PCA9556PW :: NXP Semiconductors PCA9556.pdf  
PIC/Microcontroller
Device Address range Product Page Data Sheet Notes
PIC16F818/819 0x29 PIC16F819 - 8-bit PIC® Microcontrollers 39598F.pdf 4
Real-Time Clock
Device Address range Product Page Data Sheet Notes
DS1307 0x68 DS1307 64 x 8, Serial, I²C Real-Time Clock - Maxim DS1307.pdf  
Sensor/Hardware Monitor
Device Address range Product Page Data Sheet Notes
ADM1021 0x18 to 0x1a, 0x29 to 0x2b, 0x4c to 0x4e unknown ADM1021_0.pdf 5
ADM1021A 0x18 to 0x1a, 0x29 to 0x2b, 0x4c to 0x4e System Temperature Sensor ADM1021A-D.PDF  
ADM1023 0x18 to 0x1a, 0x29 to 0x2b, 0x4c to 0x4e System Temperature Sensor, ACPI-Compliant, High Accuracy ADM1023-D.PDF  
ADM1026 0x2c to 0x2f Thermal System Management Fan Controller ADM1026-D.PDF  
ADM1031 0x2c to 0x2f Intelligent Temperature Monitor and Dual PWM Fan Controller ADM1031-D.PDF  
ADM1032 0x4c, 0x4d System Temperature Sensor, Remote and Local ADM1032-D.PDF  
ADM9240 0x2c to 0x2f System Hardware Monitor ADM9240-D.PDF  
ADT7462 0x5b, 0x5c System Fan Controller with Flexible Temperature and Voltage Monitor ADT7462-D.PDF  
DS1780 0x2c to 0x2f DS1780 CPU Peripheral Monitor - Maxim DS1780.pdf  
DS75 0x48 to 0x4f DS75 Digital Thermometer and Thermostat - Maxim DS75.pdf  
G781 0x4c unknown EDS-781.pdf  
LM75 0x48 to 0x4f LM75 Digital Temperature Sensor and Thermal Watchdog with 2-Wire Interface - Maxim LM75.pdf  
LM75A 0x48 to 0x4f LM75A | Digital Output | Local Temperature Sensors | Description & parametrics lm75a.pdf  
LM76 0x48 to 0x4d LM76 +/0.5, 12-Bit + Dig Temp Sens & Therml Wndow Compartr w/2-Wire lm76.pdf  
LM77 0x48 to 0x4b LM77 ±1.5°C Temperature Sensor with Alert Function and I2C/SMBus Interface lm77.pdf  
LM81 0x2c to 0x2f Sensor Products - Monitoring and Fan control - LM81 lm81.pdf  
LM84 0x18 to 0x1a, 0x29 to 0x2b, 0x4c to 0x4e Temperature Sensors - Remote Temperature Sensors - LM84 lm84.pdf  
LM87 0x2c to 0x2f Sensor Products - Monitoring and Fan control - LM87 lm87.pdf  
MAX1617 0x18 to 0x1a, 0x29 to 0x2b, 0x4c to 0x4e MAX1617 Remote/Local Temperature Sensor with SMBus Serial Interface - Maxim MAX1617.pdf  
MAX1617A 0x18 to 0x1a, 0x29 to 0x2b, 0x4c to 0x4e MAX1617A Remote/Local Temperature Sensor with SMBus Serial Interface - Maxim MAX1617A.pdf  
NE1617ADS 0x18 to 0x1a, 0x29 to 0x2b, 0x4c to 0x4e NE1617ADS :: NXP Semiconductors NE1617A.pdf  
Smart Card Interface
Device Address range Product Page Data Sheet Notes
TDA8020HL 0x40, 0x42, 0x44, 0x46, 0x48, 0x4a, 0x4c, 0x4e Dual IC card interface|NXP TDA8020HL.pdf 6

Notes

1 Attaches 4 secondary buses on ports 0 to 3, contains filter bitmap, routing table, and address translation page table
2 Bit-bang via chipset GPIO pins
3 Address range depends on size of EEPROM
4 See also:

PIC16F818/819 Rev. A4 Silicon Errata Sheet
PIC16F818/819 Rev. B0 Silicon Errata Sheet
SSP Module Silicon Errata Sheet
Timer1 Module Data Sheet Errata
FLASH Memory Programming Specification
AN594 - Using the CCP Module(s) - wwwAppNoteDetails - Microchip
AN734 - Using the Mid-Range Enhanced Core PIC16 Devices' MSSP Module for Slave I2C Communication - wwwAppNoteDetails - Microchip


5 See also:

Analog Devices: Analog Dialogue: Measuring Temperatures On Computer Chips With Speed And Accuracy-A New Approach Using Silicon Sensors And Off-Chip Processing

6 See also:

Application Note: TDA8020HL/C2 Dual Smart Card Interface: AN10232
Address
(top 7 bits)		 Hexidecimal Decimal   Address
(top 7 bits)		 Hexidecimal Decimal
000 0000 0x00 0 100 0000 0x40 64
000 0001 0x01 1 100 0001 0x41 65
000 0010 0x02 2 100 0010 0x42 66
000 0011 0x03 3 100 0011 0x43 67
000 0100 0x04 4 100 0100 0x44 68
000 0101 0x05 5 100 0101 0x45 69
000 0110 0x06 6 100 0110 0x46 70
000 0111 0x07 7 100 0111 0x47 71
000 1000 0x08 8 100 1000 0x48 72
000 1001 0x09 9 100 1001 0x49 73
000 1010 0x0a 10 100 1010 0x4a 74
000 1011 0x0b 11 100 1011 0x4b 75
000 1100 0x0c 12 100 1100 0x4c 76
000 1101 0x0d 13 100 1101 0x4d 77
000 1110 0x0e 14 100 1110 0x4e 78
000 1111 0x0f 15 100 1111 0x4f 79
001 0000 0x10 16 101 0000 0x50 80
001 0001 0x11 17 101 0001 0x51 81
001 0010 0x12 18 101 0010 0x52 82
001 0011 0x13 19 101 0011 0x53 83
001 0100 0x14 20 101 0100 0x54 84
001 0101 0x15 21 101 0101 0x55 85
001 0110 0x16 22 101 0110 0x56 86
001 0111 0x17 23 101 0111 0x57 87
001 1000 0x18 24 101 1000 0x58 88
001 1001 0x19 25 101 1001 0x59 89
001 1010 0x1a 26 101 1010 0x5a 90
001 1011 0x1b 27 101 1011 0x5b 91
001 1100 0x1c 28 101 1100 0x5c 92
001 1101 0x1d 29 101 1101 0x5d 93
001 1110 0x1e 30 101 1110 0x5e 94
001 1111 0x1f 31 101 1111 0x5f 95
010 0000 0x20 32 110 0000 0x60 96
010 0001 0x21 33 110 0001 0x61 97
010 0010 0x22 34 110 0010 0x62 98
010 0011 0x23 35 110 0011 0x63 99
010 0100 0x24 36 110 0100 0x64 100
010 0101 0x25 37 110 0101 0x65 101
010 0110 0x26 38 110 0110 0x66 102
010 0111 0x27 39 110 0111 0x67 103
010 1000 0x28 40 110 1000 0x68 104
010 1001 0x29 41 110 1001 0x69 105
010 1010 0x2a 42 110 1010 0x6a 106
010 1011 0x2b 43 110 1011 0x6b 107
010 1100 0x2c 44 110 1100 0x6c 108
010 1101 0x2d 45 110 1101 0x6d 109
010 1110 0x2e 46 110 1110 0x6e 110
010 1111 0x2f 47 110 1111 0x6f 111
011 0000 0x30 48 111 0000 0x70 112
011 0001 0x31 49 111 0001 0x71 113
011 0010 0x32 50 111 0010 0x72 114
011 0011 0x33 51 111 0011 0x73 115
011 0100 0x34 52 111 0100 0x74 116
011 0101 0x35 53 111 0101 0x75 117
011 0110 0x36 54 111 0110 0x76 118
011 0111 0x37 55 111 0111 0x77 119
011 1000 0x38 56 111 1000 0x78 120
011 1001 0x39 57 111 1001 0x79 121
011 1010 0x3a 58 111 1010 0x7a 122
011 1011 0x3b 59 111 1011 0x7b 123
011 1100 0x3c 60 111 1100 0x7c 124
011 1101 0x3d 61 111 1101 0x7d 125
011 1110 0x3e 62 111 1110 0x7e 126
011 1111 0x3f 63 111 1111 0x7f 127

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