MAX17050EVKIT# Maxim Integrated, MAX17050EVKIT# Datasheet - Page 41

• Manufacturer Part Number: MAX17050EVKIT#
• Description: Power Management IC Development Tools MAX17050 Eval Kit
• Manufacturer: Maxim Integrated
• Type: Voltage Protectionr
• Series: MAX17047, MAX17050r

Specifications of MAX17050EVKIT#

• Rohs: yes
• Product: Evaluation Kits
• Tool Is For Evaluation Of: MAX17050
• Input Voltage: 2.5 V to 4.5 V
• Interface Type: I2C
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Part # Aliases: 90-BT07K#D00
• For Use With: MAX17050

The MaxMinTemperature register maintains the maxi-
mum and minimum Temperature register values since
the last fuel-gauge reset or until cleared by host software.
Each time the Temperature register updates, it is com-
pared against these values. If the reading is larger than
the maximum or less than the minimum, the correspond-
ing values are replaced with the new reading. At power-
up, the MaxTemperature value is set to 80h (minimum)
and the MinTemperature value is set to 7Fh (maximum).
Therefore, both values are changed to the Temperature
register reading after the first update. Host software can
reset this register by writing it to its power-up value of
807Fh. The maximum and minimum temperatures are
each stored as two’s complement 8-bit values with 1NC
resolution.
register format.
The TGAIN and TOFF registers adjust the gain and offset
of the temperature measurement A/D on the AIN pin to
convert the result to a temperature value by the following
equation:
Figure 60. MaxMinTemperature Register Format (Output)
Figure 61. TGAIN Register Format (Input)
Maxim Integrated
TGAIN Register (2Ch)/TOFF Register (2Dh)
TGAIN Register/16384) + (TOFF Register O 2)
MSb
MSb
S
Temperature Register = (AIN Register O
S
MaxMinTemperature Register (1Ah)
MAX
Figure 60
2
14
6
MAX
2
MSB—ADDRESS 2Ch
13
MSB—ADDRESS 1Ah
5
shows the MaxMinTemperature
MAX
2
12
4
MAX
2
11
3
MAX
2
10
2
2
MAX
9
1
LSb
2
MAX
LSb
8
ModelGauge m3 Fuel Gauge
0
Both these registers are signed two’s complement. These
registers allow for accurate temperature conversions when
using a variety of external NTC thermistors (see
Figure 61
shows the TOFF register format.
The device has a 256-word linear memory space con-
taining all user-accessible registers. All registers are
16 bits wide and are read and written as 2-byte values.
When the MSB of a register is read, the MSB and LSB
are latched simultaneously and held for the duration of
the Read Data command. This prevents updates to the
LSB during the read, ensuring synchronization between
the 2 register bytes.
All locations are volatile RAM and lose their data in the
event of power loss. Data is retained during device
shutdown. Each register has a power-on-reset value that
it defaults to at power-up. Word addresses designated
as reserved return an undetermined when read. These
locations should not be written.
MSb
2
0
MSb
UNITS: +1NC
2
7
UNITS: +1NC/64
S
MAX17047/MAX17050
MIN
2
shows the TGAIN register format and
6
6
MIN
2
LSB—ADDRESS 2Ch
5
LSB—ADDRESS 1Ah
5
MIN
2
4
4
MIN
2
3
3
IC Memory Map
MIN
2
2
2
2
MIN
1
1
LSb
2
MIN
LSb
Figure 62
0
Table
0
4).
41