RX
-
8025
SA
/
NB
Page - 9 ETM10E-04
8.2.5. Clock precision adjustment register (Reg 7)
Address
Function bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
7 Digital Offset TEST
F6 F5 F4 F3 F2 F1 F0
(Default) (0) (0) (0) (0) (0) (0) (0) (0)
• The binary encoded settings in the seven bits from F6 to F0 are used to set the precision of the clock generated
from the 32768-Hz internal oscillator up to ±189 × 10
−6
in the forward (ahead) or reverse (behind) direction, in
units of ± 3.05 × 10
−6
. (Only the clock precision can be adjusted. The 32.768-kHz output from the FOUT pin is
not affected.)
• When not using this function, be sure to set "0" for bits F6 to F0.
TEST is used by the manufacturer for testing. Be sure to write "0" to this bit.
∗ For details, see "8.3. Clock Precision Adjustment Function".
8.2.6. Alarm_W register (Reg 8 to A)
Address
Function bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
8
Alarm_W ; Minute
WM40
WM20
WM10
WM8 WM4 WM2 WM1
9
Alarm_W ; Hour
WH20
WP , /A
WH10
WH8 WH4 WH2 WH1
A
Alarm_W ; Day
WW6
WW5
WW4
WW3
WW2
WW1
WW0
• The Alarm W function is used, along with the WALE and WAFG bits, to set alarms for specified day, hour, and
minute values.
• When the Alarm_W setting matches the current time, /INTB pin is set to "L" and the WALE bit is set to "1".
Note: If the current date/time is used as the Alarm_W setting, the alarm will not occur until the counter counts up
to the current date/time (i.e., an alarm will occur next time, not immediately).
• During 24-hour clock operation, the "Alarm_W ; Hours" register's bit 5 (WH20, WP, /A) functions as WH20
(two-digit hour display), and during 12-hour clock operation it functions as an AM/PM indicator.
• When the Alarm_W function's day values (WW6 to WW0) are all "0" Alarm W does not occur.
∗ For details, see "8.5. Alarm W Function".
8.2.7. Alarm_ D register (Reg B and C)
Address
Function bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
B
Alarm_D ; Minute
DM40
DM20
DM10
DM8 DM4 DM2 DM1
C
Alarm_D ; Hour
DH20
DP , /A
DH10
DH8 DH4 DH2 DH1
• The Alarm D function is used, along with the DALE and DAFG bits, to set alarms for specified hour and minute
values.
• When the Alarm_D setting matches the current time, /INTA pin is set to "L" and the DALE bit is set to "1".
Note: If the current time is used as the Alarm_D setting, the alarm will not occur until the counter counts up to the
current time (i.e., an alarm will occur next time, not immediately).
• During 24-hour clock operation, the "Alarm_D ; Hours" register's bit 5 (DH20, DP, /A) functions as DH20 (two-digit
hour display), and during 12-hour clock operation it functions as an AM/PM indicator.
∗ For details, see "8.6. Alarm D Function".
To Next Page
Loading...
