Cypress CY14B256K manual Register Map Detail Time Keeping Years 0x7FFF 10s Years

										CY14B256K
Table 4. Register Map Detail
					Time Keeping - Years
	D7	D6		D5	D4	D3	D2		D1		D0
0x7FFF			10s Years					Years

Contains the lower two BCD digits of the year. Lower nibble (four bits) contains the value for years; upper nibble (four bits) contains the value for 10s of years. Each nibble operates from 0 to 9. The range for the register is 0–99.

				Time Keeping - Months
	D7	D6	D5	D4	D3	D2		D1	D0
0x7FFE	0	0	0	10s Month			Months
	Contains the BCD digits of the month. Lower nibble (four bits) contains the lower digit and operates from 0 to 9; upper
	nibble (one bit) contains the upper digit and operates from 0 to 1. The range for the register is 1–12.
				Time Keeping - Date
	D7	D6	D5	D4	D3	D2		D1	D0
0x7FFD	0	0	10s Day of Month			Day of Month
	Contains the BCD digits for the date of the month. Lower nibble (four bits) contains the lower digit and operates from 0
	to 9; upper nibble (two bits) contains the 10s digit and operates from 0 to 3. The range for the register is 1–31. Leap
	years are automatically adjusted for.
				Time Keeping - Day
	D7	D6	D5	D4	D3	D2		D1	D0
0x7FFC	0	0	0	0	0			Day of Week
	Lower nibble (three bits) contains a value that correlates to day of the week. Day of the week is a ring counter that counts
	from 1 to 7 then returns to 1. The user must assign meaning to the day value, because the day is not integrated with the
	date.
				Time Keeping - Hours
	D7	D6	D5	D4	D3	D2		D1	D0
0x7FFB	0	0	10s Hours				Hours
	Contains the BCD value of hours in 24 hour format. Lower nibble (four bits) contains the lower digit and operates from
	0 to 9; upper nibble (two bits) contains the upper digit and operates from 0 to 2. The range for the register is 0–23.
				Time Keeping - Minutes
	D7	D6	D5	D4	D3	D2		D1	D0
0x7FFA	0		10s Minutes				Minutes
	Contains the BCD value of minutes. Lower nibble (four bits) contains the lower digit and operates from 0 to 9; upper
	nibble (three bits) contains the upper minutes digit and operates from 0 to 5. The range for the register is 0–59.
				Time Keeping - Seconds
	D7	D6	D5	D4	D3	D2		D1	D0
0x7FF9	0		10s Seconds				Seconds
	Contains the BCD value of seconds. Lower nibble (four bits) contains the lower digit and operates from 0 to 9; upper
	nibble (three bits) contains the upper digit and operates from 0 to 5. The range for the register is 0–59.

Document Number: 001-06431 Rev. *H Page 12 of 28

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