STEVAL-IFS003V1 STMicroelectronics, STEVAL-IFS003V1 Datasheet - Page 19

• Manufacturer Part Number: STEVAL-IFS003V1
• Description: BOARD STLM75/STDS75/ST72F651
• Manufacturer: STMicroelectronics

Specifications of STEVAL-IFS003V1

• Design Resources: STEVAL-IFS003V1 Gerber Files STEVAL-IFS003V1 Schematic STEVAL-IFS003V1 Bill of Materials
• Sensor Type: Temperature
• Sensing Range: -55°C ~ 125°C
• Interface: I²C
• Voltage - Supply: 7.5 V ~ 19 V
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: ST72F651, STDS75, STLM75
• Silicon Manufacturer: ST Micro
• Silicon Core Number: STLM75/STDS75 And ST72F651AR6
• Kit Application Type: Sensing - Temperature
• Application Sub Type: Temperature Sensor
• Kit Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sensitivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-6238

STDS75
3.1.5
Note:
3.2
Note:
Hysteresis temperature register (T
T
programmable lower trip-point temperature for the thermal alarm in two’s complement
format (see
0000).
The format of this register is the same as that of the temperature register. The 4 LSBs of the
T
position contains the sign bit for the digital temperature and bit 14 contains the temperature
MSB.
The resolution setting for the A/D conversion determines how many bits of the T
are used by the thermal alarm. For example, for 9-bit conversions, the hysteresis
temperature is defined by the 9 MSBs of the T
cares.”
Table 9.
These are comparable formats to the DS75 and LM75.
Power-up default conditions
The STDS75 always powers up in the following default states:
●
●
●
●
●
●
●
After power-up these conditions can be reprogrammed via the serial interface.
Keys:
STDS75
HYS
HYS
Bytes
Bits
Thermostat mode = comparator mode
Polarity = active-low
Fault tolerance = 1 fault (i.e., relevant bits set to '0' in the configuration register)
T
T
Register pointer = 00 (temperature register)
Conversion resolution = 9-bit (i.e., RC0 = 0 and RC1 = 0 in the configuration register;
see
register is a two-byte (16-bit) READ/WRITE register that stores the user-
register are hardwired to zero, so data written to these bits is ignored. The MSB
OS
HYS
TMSB = temperature MSB
TLSB = temperature LSB
Table 7 on page
SB = two’s complement sign bit
TD = temperature data
= 80 °C
MSB
= 75 °C
SB
15
Table
T
OS
TMSB TD TD TD TD TD TD
and T
9). This register defaults to 75 °C at power-up (i.e., 0100 1011 0000
14
HYS
13
MS byte
17)
register format
12
THSB
Doc ID 13297 Rev 8
11
10
9
HYS
HYS
8
)
register, and all remaining bits are “Don’t
9-bit
LSB
7
10-bit
LSB
6
11-bit
LSB
TLSB
5
Functional description
LS byte
12-bit
LSB
4
3 2 1
0 0 0
HYS
register
19/39
LSB
0
0