0xFFFF9 0x7FFF9 Time Keeping Seconds | Cypress CY14B108K, CY14B108M

PRELIMINARY

CY14B108K, CY14B108M

Table 5. Register Map Detail

Description

CY14B108K

CY14B108M

0xFFFFF

0x7FFFF

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.

0xFFFFE

0x7FFFE

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.

0xFFFFD

0x7FFFD

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.

0xFFFFC

0x7FFFC

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.

0xFFFFB

0x7FFFB

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.

0xFFFFA

0x7FFFA

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.

0xFFFF9

0x7FFF9

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 to 59.

Document #: 001-47378 Rev. **

Page 12 of 29

[+] Feedback