AT91F40416 ATMEL Corporation, AT91F40416 Datasheet - Page 18

• Manufacturer Part Number: AT91F40416
• Description: At91 Arm(r) Thumb(r) Microcontroller
• Manufacturer: ATMEL Corporation

RTC Time/Calendar Valid Register
Name:
Access:
• NVSEC: Non-Valid Second
0 = No invalid data was detected when programming the RTC_SEC register.
1 = Invalid data was detected when programming the RTC_SEC registers.
• NVMIN: Non-Valid Minute
0 = No invalid data was detected when programming the RTC_MIN register.
1 = Invalid data was detected when programming the RTC_MIN registers.
• NVHOUR: Non-Valid Hour
0 = No invalid data was detected when programming the RTC_HOUR Register.
1 = Invalid data was detected when programming the RTC_HOUR Registers.
• NVDAY: Non-Valid Day
0 = No invalid data was detected when programming the RTC_DAY Register.
1 = Invalid data was detected when programming the RTC_DAY Register.
• NVDATE: Non-Valid Date
0 = No invalid data was detected when programming the RTC_DATE Register.
1 = Invalid data was detected when programming the RTC_DATE Register.
The Century, Year, Month field must be programmed before programming the date because the NVDATE could be set
incorrectly. For example, if RTC_CENTURY = 19, RTC_YEAR = 98, RTC_MONTH = 02 (FEB) and the user attempts to
enter 29 into RTC_DATE.
• NVMONTH: Non-Valid Month
0 = No invalid data was detected when programming the RTC_MONTH Register.
1 = Invalid data was detected when programming the RTC_MONTH Register.
• NVYEAR: Non-Valid Year
0 = No invalid data was detected when programming the RTC_YEAR Register.
1 = Invalid data was detected when programming the RTC_YEAR Register.
• NVCENT: Non-Valid Century
0 = No invalid data was detected when programming the RTC_CENT Register.
1 = Invalid data was detected when programming the RTC_CENT Register.
These flags are reset only when the data to be programmed is correct.
18
Bit
BaseAdr
Read/Write
Initial value
RTC
RTC_TC_VALID
Read-only
NVCENT
7
R
0
NVYEAR
6
R
0
NVMONTH
5
R
0
NVDATE
4
R
0
NVDAY
3
R
0
NVHOUR
2
R
0
NVMIN
1
R
0
NVSEC
0
R
0
1302B–07/01