0x7FFF9 0x3FFF9 Time Keeping Seconds | Cypress CY14B104K, CY14B104M

PRELIMINARY

CY14B104K, CY14B104M

Table 5. Register Map Detail

Description

CY14B104K

CY14B104M

0x7FFFF

0x3FFFF

Time Keeping - Years

10s

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.

0x7FFFE

0x3FFFE

Time Keeping - Months

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.

0x7FFFD

0x3FFFD

Time Keeping - Date

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.

0x7FFFC

0x3FFFC

Time Keeping - Day

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.

0x7FFFB

0x3FFFB

Time Keeping - Hours

10s

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.

0x7FFFA

0x3FFFA

Time Keeping - Minutes

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.

0x7FFF9

0x3FFF9

Time Keeping - Seconds

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 #: 001-07103 Rev. *K

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