BQ32002 Datasheet, PDF (15/29 Pages) Texas Instruments – BQ32002 Real-Time Clock (RTC)

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BQ32002
SLUSA96B – AUGUST 2010 – REVISED APRIL 2016
Address
Name
Initial Value
Description
0x04
DATE
00XXXXXXb
Clock date
Table 8. DATE Register
D7
D6
D5
D4
D3
D2
D1
D0
BIT(S)
RSVD
10_DATE
1_DATE
Name
r/w
r/w
r/w
Read/Write
0
0
X
X
X
X
X
X
Initial
0
0
UC
UC
UC
UC
UC
UC
Cycle
RSVD
10_DATE
1_DATE
Reserved. The RSVD bits should always be written as 0.
BCD of tens of date. The 10_DATE bits are the BCD representation of the tens of date on the clock. Valid values are 0 to
3⁽¹⁾. If invalid data is written to 10_DATE, the clock will update with invalid data in 10_DATE until the counter rolls over;
thereafter, the data in 10_DATE is valid. Time keeping registers can take up to 1 second to update after the RTC
switches from backup power supply to main power supply.
BCD of date. The 1_DATE bits are the BCD representation of the date on the clock. Valid values are 0 to 9⁽¹⁾. If invalid
data is written to 1_DATE, the clock will update with invalid data in 1_DATE until the counter rolls over; thereafter, the
data in 1_DATE is valid. Time keeping registers can take up to 1 second to update after the RTC switches from backup
power supply to main power supply.
(1) 10_DATE and 1_DATE must form a valid date, 01 to 31, dependent on month and year.
Address
Name
Initial Value
Description
0x05
MONTH
000XXXXXb
Clock month
Table 9. MONTH Register
D7
D6
D5
D4
D3
RSVD
10_MONTH
r/w
r/w
0
0
0
X
X
0
0
0
UC
UC
D2
D1
1_MONTH
r/w
X
X
UC
UC
D0
BIT(S)
Name
Read/Write
X
Initial
UC
Cycle
RSVD
10_MONTH
1_MONTH
Reserved. The RSVD bits should always be written as 0.
BCD of tens of month. The 10_MONTH bits are the BCD representation of the tens of month on the clock. Valid values
are 0 to 1⁽¹⁾. If invalid data is written to 10_MONTH, the clock will update with invalid data in 10_MONTH until the
counter rolls over; thereafter, the data in 10_MONTH is valid.
BCD of month. The 1_MONTH bits are the BCD representation of the month on the clock. Valid values are 0 to 9⁽¹⁾. If
invalid data is written to 1_MONTH, the clock will update with invalid data in 1_MONTH until the counter rolls over;
thereafter, the data in 1_MONTH is valid.
(1) 10_MONTH and 1_MONTH must form a valid date, 01 to 12.
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