LTC2983
67
2983fc
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Table 79. Example Thermistor Temperature Values
BYTE 1 BYTE 2 BYTE 3
B23 B22 B21 B20 B19 B18 B17 B16 B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
Temperature 2
13
2
12
2
11
2
10
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
2
–1
2
–2
2
–3
2
–4
2
–5
2
–6
2
–7
2
–8
2
–9
2
–10
457.5 0 0 0 0 0 1 1 1 0 0 1 0 0 1 1 0 0 0 0 0 0 0 0 0
400.2 0 0 0 0 0 1 1 0 0 1 0 0 0 0 0 0 1 1 0 0 1
1 0 0
372.3 0 0 0 0 0 1 0 1 1 1 0 1 0 0 0 1 0 0 1 1 0 0 1 1
320.1 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 1 1 0 0 1 1 0
290.55 0 0 0 0 0 1 0 0 1 0 0 0 1 0 1 0 0 0 1 1 0 0 1 1
249.32 0 0 0 0 0 0 1 1 1 1 1 0 0 1 0 1 0 1 0 0 0 1 1 1
240.3 0 0 0 0 0 0 1 1 1 1 0 0 0 0 0 1 0 0 1 1 0 0 1 1
230 0 0 0 0 0
0 1 1 1 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0
215.3 0 0 0 0 0 0 1 1 0 1 0 1 1 1 0 1 0 0 1 1 0 0 1 1
200 0 0 0 0 0 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0
CUSTOM THERMISTORS
Table 80. Custom Thermistor Channel Assignment Data
CONFIGURATION
FIELD
DESCRIPTION # BITS BINARY
DATA
MEMORY
ADDRESS 210
MEMORY
ADDRESS 211
MEMORY
ADDRESS 212
MEMORY
ADDRESS 213
(1) Thermistor Type Custom Table 5 11011 1 1 0 1 1
(2) Sense Resistor
Channel Pointer
CH
4
5 00100 0 0 1 0 0
(3) Sensor
Configuration
Single-Ended 3 100 1 0 0
(4) Excitation Current 1µA 4 0011 0 0 1 1
Not Used Set These Bits
to 0
3 00 0 0 0
(5) Custom Thermistor
Data Pointer
Start Address
= 20
6 010100 0 1 0 1 0 0
(5) Custom Thermistor
Length-1
Length –1 = 9 6 001001 0 0 1 0 0 1
In this example, a custom thermistor tied to CH5, with a
sense resistor on CH3/4, is programmed with the channel
assignment data shown in Table 80 (refer to Figure 24
for similar format). In this case the custom data begins
at memory location 0x2C8 (starting address is 20). The
starting address (offset from 0x250) is entered in the
custom thermistor data pointer field of the channel as-
signment data. The table data length –1 (9 in this case)
is entered into the custom thermistor data length field of
the thermistor channel assignment word.
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