DF2211NP24V Renesas Technology / Hitachi Semiconductor, DF2211NP24V Datasheet - Page 406

• Manufacturer Part Number: DF2211NP24V
• Description: H8S/2200 Series, 2212 Group, USB, RTC, HSS TNP-64B; Vcc= 2.7 to 3.6 volts, Temp= -20 to 75 C; Package: PVQN0064LB-A
• Manufacturer: Renesas Technology / Hitachi Semiconductor

11.3.3
RHRDR counts the BCD-coded hour value on the carry generated once per hour by RMINDR.
This register is initialized to H'00 by a STBY input or the RST bit in RTCCR1, but not initialized
by a RES input. The setting range is either decimal 0 to 11 or 0 to 23 by the selection of the 12/24
bit in RTCCR1.
Bit
7
6
5
4
3
2
1
0
Note: * Initial value after RES.
Rev.7.00 Dec. 24, 2008 Page 352 of 698
REJ09B0074-0700
Bit Name
BSY
—
HR11
HR10
HR03
HR02
HR01
HR00
Hour Data Register (RHRDR)
Initial Value* R/W
—
0
—
—
—
—
—
—
R
—
R/W
R/W
R/W
R/W
R/W
R/W
Description
RTC Busy
This bit is set to 1 when the RTC is updating (operating)
the values of second, minute, hour, and day-of-week data
registers. When this bit is 0, the values of second, minute,
hour, and day-of-week data registers must be adopted.
Reserved
This bit is always read as 0.
Counting Ten’s Position of Hours
Counts on 0 to 2 for ten’s position of hours.
Counting One’s Position of Hours
Counts on 0 to 9 once per hour. When a carry is
generated, 1 is added to the ten’s position.