FDC37C935FR View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

FDC37C935FR

Plug and Play Compatible Ultra I/OÔ Controller with Fast IR

SMSC -> Microchip 

ADD

0

1

2

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Table 66A - Time, Calendar and Alarm 1 Bytes

REGISTER FUNCTION

BCD RANGE

Register 0: Seconds

00-59

Register 1: Seconds Alarm

00-59

Register 2: Minutes

00-59

Register 3: Minutes Alarm

00-59

Register 4: Hours

01-12 am

(12 hour mode)

81-92 pm

(24 hour mode)

00-23

Register 5: Hours Alarm

01-12 am

(12 hour mode)

81-92 pm

(24 hour mode)

00-23

Register 6: Day of Week

01-07

Register 7: Day of Month

01-31

Register 8: Month

01-12

Register 9: Year

00-99

BINARY RANGE

00-3B

00-3B

00-3B

00-3B

01-0C

81-8C

00-17

01-0C

81-8C

00-17

01-07

01-1F

01-0C

00-63

ADDRESS

40h

41h

42h

43h

44h

45h

46h

47h

Table 66B - Century Byte and Alarm 2 Bytes

DECIMAL

BCD

REGISTER FUNCTION

RANGE

RANGE

Register 0: Century Byte

0-99

00-99

Register 1: Seconds Alarm 2

0-59

00-59

Register 2: Minutes Alarm 2

0-59

00-59

12-hr

1-12

01-12 AM

Register 3: Hours Alarm 2 mode

81-92 PM

24-hr

0-23

00-23

mode

Register 4: Day of Week Alarm 2

1-7

01-07

Register 5: Date of Month Alarm 2

1-31

01-31

Register 6: Month Alarm 2

1-12

01-12

Register 7: Year Alarm 2

0-99

00-99

BINARY RANGE

00-63

00-3B

00-3B

01-0C AM

81-8C PM

00-17

01-07

01-1F

01-0C

00-63

Alarm 2 Function

Alarm 2 can only be used as a wake-up alarm to

turn on power to the system when the system is

powered off. There are two bits used to control

alarm 2. The Alarm 2 wake-up function is

enabled via the Alarm 2 Enable bit, AL2_EN, in

the Soft Power Enable Register 2. The alarm 2

Remember Enable bit, AL2_REM_EN, in the

RTC Control Register 1, is used to power-up the

150

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