DS1678S Maxim Integrated Products, DS1678S Datasheet - Page 22

• Manufacturer Part Number: DS1678S
• Description: IC RECORDER REALTIME EVENT 8SOIC
• Manufacturer: Maxim Integrated Products
• Type: Time Event Recorderr

Specifications of DS1678S

• Memory Size: 32B
• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

2-WIRE SERIAL COMMUNICATION WITH DS1678 Figure 4
2-WIRE COMMUNICATION TIMING DIAGRAM Figure 5
SDA
SCL
STOP
S D A
S D A
S C L
S C L
S D A
S D A
S D A
S C L
S C L
S C L
t
BU F
START
W rite to M e m o ry A d d re s s P o in te r
W rite to M e m o ry L o c a tio n (S in g le B y te )
S ta rt
S ta rt
R e a d S in g le B y te fro m C u rre n t M e m o ry A d d re s s P o in te r L o c a tio n
R e a d M u ltip le B y te s fro m C u rre n t M e m o ry A d d re s s P o in te r L o c a tio n
R e a d S in g le B y te fro m N e w M e m o ry A d d re s s P o in te r L o c a tio n
S ta rt
S ta rt
S ta rt
S D A
S C L
S
S
S
S
S
1
1
1
1
1
t
H D:STA
D e v ic e A d d re s s B y te
D e vic e A d d re s s B y te
0
0
t
0
0
0
L OW
D e v ic e A d d re s s B y te
D e v ic e A d d re s s B y te
D e v ic e A d d re s s B y te
0
0
0
0
0
D 7
1
1
1
1
1
D 6
t
R
t
0
0
H D:D AT
0
0
0
D 5
D a ta B yte
1
1
1
1
1
D 4
0
0
0
0
0
D 3
W
W
R d
R d
W
D 2
D S 16 78
D S 16 78
D S 16 78
D S 16 78
D S 16 78
t
A C K
A C K
HIG H
A C K
A C K
A C K
A
A
A
A
A
D 1
A 7
A 7
A 7
D 7
D 7
D 0
t
F
M e m o ry A d d re s s B yte
M a s te r
A 6
M e m o ry A d d re s s B yte
A 6
N A C K
A 6
D 6
D 6
M e m o ry A d d re s s B y te
N
t
SU:D AT
A 5
A 5
M o s t S ig n ific a n t
D 5
D 5
A 5
S to p
D a ta B y te
D a ta B y te
A 4
A 4
P
A 4
22 of 26
D 4
D 4
A 3
A 3
A 3
D 3
D 3
t
SU :ST A
A 2
A 2
D 2
D 2
A 2
REPEATED
START
A 1
A 1
D 1
D 1
A 1
A 0
A 0
D 0
D 0
A 0
D S 1 67 8
D S 1 67 8
D S 16 78
M a s te r
M a s te r
N A C K
A C K
A C K
A C K
A C K
A
t
N
A
A
HD :ST A
A
D 7
D 7
S to p
S to p
R e p e a te d
S ta rt
P
P
R
D 6
D 6
1
L e a s t S ig n ific a n t
D 5
D 5
D a ta B yte
0
D a ta B yte
D 4
D 4
0
D 3
D e vic e A d d re s s
D 3
1
D 2
D 2
B yte
0
D 1
D 1
1
D 0
D 0
D S 1 67 8
M a s te r
N A C K
0
A C K
t
N
SU :ST O
A
R d
D S 16 78
S to p
S to p
A C K
P
P
A