Filter
Top Products
951
Chapter 49 Real-Time Clock
4.Registers
4. Registers
4.1 WTCR: RTC Control Register
This register is used to control behavior of the Real-time Clock module.
• WTCR: Address 04A2
H
(Access: Byte, Half-word)
(For attributes, refer to “Meaning of Bit Attribute Symbols (Page No.10)”.)
• bit15: Enable interrupt requests at 1-day intervals
When the hour counter overflows, this flag is set to “1”.
• bit14: 1-day interrupt request flag
• bit13: Enable interrupt requests at 1-hour intervals
When the minute counter overflows, this flag is set to “1”.
• bit12: 1-hour interrupt request flag
• bit11: Enable interrupt requests at 1-minute intervals
15 14 13 12 11 10 9 8 bit
INTE3 INT3 INTE2 INT2 INTE1 INT1 INTE0 INT0
00000000
Initial
value
0 0 0 0 0 0 0 0 When reset
R/W R(R1),W R/W R(R1),W R/W R(R1),W R/W R(R1),W Attribute
76543210bit
Reserved Reserved Reserved – RUN UPDT – ST
000–00–X
Initial
value
0 0 0 – 0 0 – X When reset
R/W0 R/W0 R/W0 RX/WX R/WX R(R0)/W RX/WX R/W Attribute
INTE3 Operation
0 No interrupt requests
1 Generate interrupt requests at 1-day (24 hour) intervals.
INT3
Status
Read Write
0 No interrupt requests Clear the flag.
1
Generate interrupt requests at 1-day (24 hour)
intervals.
Writing does not affect the operation.
INTE2 Operation
0 No interrupt requests
1 Generate interrupt requests at 1-hour intervals.
INT2
Status
Read Write
0 No interrupt requests Clear the flag.
1 Generate interrupt requests at 1-hour intervals. Writing does not affect the operation.
INTE1 Operation
0 No interrupt requests
1 Generate interrupt requests at 1-minute intervals.