tc7mtx01fk TOSHIBA Semiconductor CORPORATION, tc7mtx01fk Datasheet - Page 9

• Manufacturer Part Number: tc7mtx01fk
• Description: Digital Temperature Compensation Ic
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Temperature Sensor
the output from the temperature sensor (after conversion to a digital value) and the 25°C temperature sensor
compensation data (stored at address 0FH) is used as the E
STB or by the Trig.1 input. On completion of operation, the sensor returns to its inactive state.
1. Measurement of ambient temperature and device temperature data
2. Calculation of 25° ° ° ° C temperature sensor compensation data
3. E
before Compensation
Temperature Data
The IC incorporates a temperature sensor which can detect temperatures with an accuracy of 1°C. The sum of
In Normal Operation Mode, the temperature sensor is inactive. The sensor is triggered by the rising edge of
The 25°C temperature sensor compensation data can be written to address 0FH of the E
(TC7MTX01FK)
(before compensation)
·
·
·
·
2
This instruction writes the 25°C address compensation data to address 0FH in the E
PROM Write
The ambient temperature of the test environment is measured.
Read the temperature data of TC7MTX01FK before compensation
If the ambient temperature is 25°C, the compensation data can be calculated as follows:
25°C temperature sensor compensation data = 3FH - temperature data before compensation
If the ambient temperature is not 25°C, add the difference between the ambient temperature and 25°C
to the result of the above calculation.
The following table shows 25°C temperature sensor compensation values corresponding to the ambient
temperature and the raw temperature data
7E
7D
7C
7B
7A
6E
6D
6C
6B
6A
82
81
80
7F
79
78
77
76
75
74
73
72
71
70
6F
69
25°C temperature sensor compensation values corresponding to the ambient temperature
21° C
BC
BD
CA
CB
CC
CD
CE
BA
BB
BE
BF
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
CF
D0
D1
D2
22° C
BC
BD
CA
CB
CC
CD
CE
BA
BB
BE
BF
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
CF
D0
D1
D2
D3
and the temperature data before compensation
23°C
CC
CD
BB
BC
BD
BE
BF
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
CA
CB
CE
CF
D0
D1
D2
D3
D4
Ambient Temperature in Test Environment
24° C
9
BC
BD
CA
CB
CC
CD
CE
BE
BF
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
CF
D0
D1
D2
D3
D4
D5
2
PROM address of the compensation data.
25° C
CC
CD
BD
BE
BF
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
CA
CB
CE
CF
D0
D1
D2
D3
D4
D5
D6
26° C
CA
CB
CC
CD
CE
BE
BF
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
CF
D0
D1
D2
D3
D4
D5
D6
D7
All values above are hexadecimal.
27° C
CA
CB
CC
CD
CE
CF
BF
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
D0
D1
D2
D3
D4
D5
D6
D7
D8
2
TC7MTX01FK
PROM as follows:
2
PROM.
28°C
CA
CB
CC
CD
CE
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
CF
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
2002-03-18
29° C
CA
CB
CC
CD
CE
CF
C1
C2
C3
C4
C5
C6
C7
C8
C9
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9