RTC-4553AA

?  Automatic calendar function (year, month, day, day of the week, hour, minute,

second).

?  Automatic leap year correction. 

?  Builtin 30 x 4-bit S-RAM.

Absolute

Max.

rating

Specifications

(characteristics)

Operating

range

Frequency

characteristics

DC

characteristics

External

dimensions

(Unit:  mm)

R4553

A

123

4A

E

7

.

4

±

0

.

2

3

.

2

±

0

.

1

5

.

0

3

.

1

10.1

±

0.2

Terminal

connection

0.15

0.6

1.27

0.35

0.05 Min.

#1

#7

#14

#8

(GND=O V,  V

DD

=5 V 

±

 10 % , Ta=-30 

°

C to +70 

°

C)

L1 to L5 are test pin. Do not connect them to any terminals.

BLOCK

diagram

32.768 kHz

TP

OUT

S

OUT

SCK

S

IN

CS

1

CS

0

WR

OSC

Counter

Output

control

RAM

(120bit)

Input

control

Output  control

Shift register

Control circuit

Control

register

1

Control

register

2

Control

register

3

Sec.

Min.

Hou.

Day

of

Week

Day

Mon.

Year

No.

1

2

3

4

5

6

7

Pin terminal

GND

WR

S

IN

SCK

L1

L2

L3

No.

14

13

12

11

10

9

8

Pin terminal

TP

OUT

S

OUT

CS

1

CS

0

L5

L4

V

DD

RTC-4553

RTC-4553

(SOP 14-pin)

Metal may be exposed on the top or bottom of this product. This won’t affect any quality, reliability or electrical spec.

SERIAL-INTERFACE REAL TIME CLOCK MODULE WITH SRAM

RTC-4553

Item

Supply voltage

Input voltage

Output voltage

Storage temperature

Symbol

V

DD

V

IN

V

OUT

T

STG

Condition

V

DD

to GND

S

IN

,SCK

__

, W

__

R, CS

__

0

, CS

1

S

OUT

, T

POUT

____

Stored as bare 

product after

unpacking

Min.

-0.3

-55

Max.

+6.0

V

DD

+0.3

+125

Unit

V

°C

Item

Power voltage

Clock voltage

Operating temperature

Symbol

V

DD

V

CLK

T

OPR

Condition

—

—

No condensation

Min.

2.7

2.0

-30

Typ.

5.0

—

—

Max.

5.5

5.5

+70

Unit

V

V

?C

Item

Frequency tolerance

Oscillation start-up time

Frequency temperature 

characteristics

Frequency voltage 

characteristics

Aging

Symbol

?

f/fo

t

STA

T

op

f/V

fa

Condition

Ta=+25 

°

C,

V

DD

=5 V

AA

A

B

Ta=-10 

°

C to +70 

°

C, V

DD

=5 V

Reference at +25 

°

C

Ta=Fix, V

DD

=2 V to 5.5 V

Reference at 5 V

Ta=+25 °C, V

DD

=5 V, 

first year

Range

5±5

5±10

5±20

3.0 Max.

+10

-120

±5

Unit

x 10

-6

s

x 10

-6

x 10

-6

/

year  

Item

Current consumption

Output voltage

Off leak current

Input voltage

Input current

Symbol

I

DD1

I

DD2

V

OH

V

OL

I

OZH

I

OZL

V

IH

V

IL

I

IH

I

IL

Condition

SCK

___

=500 kHz

SCK

___

=O Hz

I

OH

=-400 μA

I

OL

=1.6 mA

V

OUT

=5.5 V

V

OUT

=0 V

—

V

IN

=5.5 V

V

IN

=0 V

Min.

—

V

DD

-0.

4

—

-2.0

4/5 V

DD  

—

-2.0

Typ.

—

1.0

—

Max.

100

3.0

—

0.4

2.0

—

1/5 V

DD

2.0

Unit

μA

V

μA

V

μA

?  Built-in crystal unit allows adjustment-free efficient operation.

?  Automatic calendar function (year, month, day, day of the week, hour, minute,

second).

?  Automatic leap year correction. 

?  Builtin 30 x 4-bit S-RAM.