iC-TW3 SENSOR SIGNAL CONDITIONER WITH
TEMPERATURE COMPENSATION AND LINE DRIVER
Rev B1, Page 22/24
EEPROM address
1-wire address
16
22
28
16 + 128 = 144
22 + 128 = 150
28 + 128 = 156
0
1
255
gainA
gainB
ofsA
ofsB
ofsZ
gainA
gainB
ofsA
ofsB
ofsZ
gainA
gainB
ofsA
ofsB
ofsZ
3 breakpoint look-up table
EEPROM address
1-wire address
16
22
106
16 + 128 = 144
22 + 128 = 150
106 + 128 = 234
0
1
255
gainA
gainB
ofsA
ofsB
ofsZ
gainA
gainB
ofsA
ofsB
ofsZ
gainA
gainB
ofsA
ofsB
ofsZ
16 breakpoint look-up table
Figure 7: Temperature LUT memory map
TEST MODES
TEST_CLK
Adr 0x0E; Bit 1
Function
R/W
The iC-TW3 posses two registers 0x0E and 0x10
which provide access to basic testing functionality. The
PD_CELSIUS bit allows powering off the internal tem-
perature sensor. If powered down, the temperature
sensor output value can be forced to a desired value
by writing to register 0x40. The user can then test the
compensation circuit without cycling the device tem-
perature.
Code
0
1
Clock is not driven on any pin (default)
Clock is driven on pin NERR
Table 43: Internal clock oscillator
CLKDIV
Adr 0x0E; Bit 2
Function
R/W
Code
PD_CELSIUS
Adr 0x0E; Bit 0
R/W
1
0
fsystem = fosc (default)
fsystem = fosc / 2
Code
Function
0
1
Temperature sensor enabled (default)
Temperature sensor disabled
Table 44: Internal clock divider selection
Table 42: Temperature sensor power control
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