BQ32000 Datasheet, PDF (12/20 Pages) Texas Instruments – REAL-TIME CLOCK (RTC)

bq32000
SLUS900B – DECEMBER 2008 – REVISED JUNE 2009................................................................................................................................................... www.ti.com
Address
Name
Initial Value
Description
0x04
DATE
00XXXXXXb
Clock date
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.
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.
(1) 10_DATE and 1_DATE must form a valid date, 01 to 31, dependent on month and year.
Address
Name
Initial Value
Description
D7
0
0
RSVD
10_MONTH
1_MONTH
0x05
MONTH
000XXXXXb
Clock month
MONTH Register
D6
RSVD
r/w
0
0
D5
D4
D3
10_MONTH
r/w
0
X
X
0
UC
UC
D2
D1
1_MONTH
r/w
X
X
UC
UC
D0
BIT(S)
Name
Read/Write
X
Initial
UC
Cycle
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.
Address
Name
Initial Value
Description
D7
X
UC
10_YEAR
1_YEAR
0x06
YEARS
XXXXXXXXb
Clock year
YEARS Register
D6
D5
D4
D3
D2
D1
D0
BIT(S)
10_YEAR
1_YEAR
Name
r/w
r/w
Read/Write
X
X
X
X
X
X
X
Initial
UC
UC
UC
UC
UC
UC
UC
Cycle
BCD of tens of years. The 10_YEAR bits are the BCD representation of the tens of years on the clock. Valid values are 0
to 9. If invalid data is written to 10_YEAR, the clock will update with invalid data in 10_YEAR until the counter rolls over;
thereafter, the data in 10_YEAR is valid.
BCD of year. The 1_YEAR bits are the BCD representation of the years on the clock. Valid values are 0 to 9. If invalid
data is written to 1_YEAR, the clock will update with invalid data in 1_YEAR until the counter rolls over; thereafter, the
data in 1_YEAR is valid.
12
Submit Documentation Feedback
Product Folder Link(s): bq32000
Copyright © 2008–2009, Texas Instruments Incorporated