M41T82ZM6F STMicroelectronics, M41T82ZM6F Datasheet - Page 44

• Manufacturer Part Number: M41T82ZM6F
• Description: IC RTC SERIAL W/BATT SW 8-SOIC
• Manufacturer: STMicroelectronics
• Type: Clock/Calendar/Alarmr

Specifications of M41T82ZM6F

• Memory Size: 32B
• Time Format: HH:MM:SS:hh (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.38 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-7828-2; M41T82ZM6F

Clock operation
3.15
3.16
Table 17.
1. All other control bits power-up in an undetermined state.
2. M41T83 only
3. BMB0-BMB4, RB0, RB1
4. With battery backup
5. UC = unchanged
Table 18.
1. All other control bits power-up in an undetermined state.
2. M41T83 only
3. With battery backup
4. UC = unchanged
44/61
Initial
power-up
Subsequent
power-up
Initial
power-up
Subsequent
power-up
Condition
Condition
(4)(5)
(3)(4)
(1)
(1)
FT/RST pin, frequency test and reset output pin (M41T82
only)
On the M41T82, the 512 Hz frequency test signal and the reset output share the same pin,
FT/RST. When the FT bit (bit 6 of register 08h) is a 1, the 512 Hz test signal is activated on
the pin. With FT a 0 and V
enabled when V
At power-up, FT will be 0 leaving the pin functioning as the reset output.
Initial power-on defaults
Upon initial application of power to the device, the register bits will initially power-on in the
state indicated in
Initial power-on default values (part 1)
Initial power-up default values (part 2)
RPT11
UC
ST CB1 CB0 OUT FT
0
-15
UC
0
UC
0
HT OF TE
1
1
UC
0
UC
1
CC
Table 17
UC
fails, the FT bit will be cleared and the output will go low to assert reset.
1
0
0
TI/TP
0
0
UC
(2)
CC
0
and
DCS
ACS
UC
good (above V
Doc ID 12578 Rev 12
0
Table
TIE
UC
0
Digital
(2)
calib.
UC
0
18.
TD1 TD0 RS0 RS1-3
UC
1
Analog
calib.
RST
UC
UC
0
1
), the output will be high. If the 512 Hz is
UC
1
OFIE
UC
0
(2)
UC
0
Watch-
dog
0
0
OTP
UC
(3)
(2)
0
A1IE
A2IE
UC
UC
0
0
(2)
(2)
M41T82-M41T83
SQWE
RPT21-
UC
25
UC
0
1
(2)
AL2E
ABE
UC
UC
0
0