S-35190A-J8T1G datasheet(11/53 Pages) SII

Part #	S-35190A-J8T1G

Description	3-WIRE REAL-TIME CLOCK

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Manufacturer	SII [Seiko Instruments Inc]

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3-WIRE REAL-TIME CLOCK

Rev.2.4_00

S-35190A

Seiko Instruments Inc.

11

Configuration of Register

1. Real-time data register

The real-time data register is a 7-byte register that stores the data of year, month, day, day of the week, hour, minute, and

second in the BCD code. To Write/Read real-time data 1 access, transmit/receive the data of year in B7, month, day, day

of the week, hour, minute, second in B0, in 7-byte. When you skip the procedure to access the data of year, month, day,

day of the week, Read/Write real-time data 2 access. In this case, transmit/receive the data of hour in B7, minute, second

in B0, in 3-byte.

Year data (00 to 99)

Month data (01 to 12)

Day data (01 to 31)

Hour data (00 to 23 or 00 to 11)

Minute data (00 to 59)

Second data (00 to 59)

Y80

Y40

Y4

Y8

Y10

Y20

Y2

Y1

B7

B0

M1

M2

M4

M8

M10

0

D1

D2

D4

D8

D10

D20

0

W1

W2

W4

0

H1

H4

H8

H10

H20

H2

0

m1

s2

s4

s8

s10

s20

s40

0

m8

m10

m20

m40

0

m4

m2

AM / PM

s1

Start bit of real-time data 2 data access

Start bit of real-time data 1 data access

Day of the week data (00 to 06)

B7

B0

B7

B0

B7

B0

B7

B0

B7

B0

B7

B0

Figure 14 Real-time Data Register

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S-35190A-J8T1G Datasheet(PDF) 11 Page - Seiko Instruments Inc

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