RF5C15 View Datasheet(PDF) - RICOH Co.,Ltd.

Part Name

Description

Manufacturer

RF5C15

REAL-TIME CLOCK

RICOH Co.,Ltd. 

RP/RF/RJ5C15

ADDRESS MAPPING

MODE

A3 to A0

Description

BANK 0

D3

D2

D1

D0

Description

BANK 1

D3

D2

D1

D0

0 1-second counter

1 10-second counter ×

Clock output select

register

×

Adjust

×

×

×

ADJ

2 1-minute counter

1-minute alarm register

3 10-minute counter ×

10-minute alarm register ×

4 1-hour counter

1-hour alarm register

5 10-hour counter

×

×

10-hour alarm register

×

×

6 Day-of-the-week counter ×

Day-of-the-week alarm register ×

7 1-day counter

1-day alarm register

8 10-day counter

×

×

10-day alarm register

×

×

9 1-month counter

×

×

×

×

A 10-month counter ×

×

×

12/24 select register

×

×

×

B 1-year counter

Leap year counter

×

×

C 10-year counter

×

×

×

×

D MODE register Timer EN Alarm EN × BANK1/0

Timer EN Alarm EN × BANK1/0

E TEST register

Test 3 Test 2 Test 1 Test 0

Test 3 Test 2 Test 1 Test 0

F RESET controller, etc. 1Hz ON 16Hz ON Timer RESET Alarm RESET

1Hz ON 16Hz ON Timer RESET Alarm RESET

*) “x” means “Don't care” for Write ; always “0” for Read.

• Clock Output Select Register (BANK 1, Address 0h)

D3

D2

D1

D0

×

0

0

0

×

0

0

1

×

0

1

0

×

0

1

1

×

1

0

0

×

1

0

1

×

1

1

0

×

1

1

1

Clock Output

“Z”

16.384kHz

1.024kHz

128Hz

16Hz

1Hz

1/60Hz

“L”

*) “x” means “Don't care” for Write ; always “0” for Read.

Remarks

High impedance

duty 50%

duty 50%

duty 50%

duty 50%

duty 50% When the second counter counts up.

duty 50% When the second counter counts up.

6

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