MAX6902(2003) 查看數據表（PDF） - Maxim Integrated
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MAX6902 Datasheet PDF : 18 Pages
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SPI-Compatible RTC in a TDFN
FUNCTION
REGISTER ADDRESS
A7 A6 A5 A4 A3 A2 A1 A0
VALUE
REGISTER DEFINITION
D7 D6 D5 D4 D3 D2 D1 D0
RAM
RAM 0 RD 1 0 0 0 0 0 1
/W
•
•
•
•
•
•
RAM 30 RD 1 1 1 1 1 0 1
/W
RAM DATA 0 x x x x x x x x
•
•
•
•
•
•
RAM DATA 30 x x x x x x x x
RAM BURST RD 1 1 1 1 1 1 1
/W
Note: *POR STATE defines power-on reset state of register contents.
Figure 2. Register Address Definition (Sheet 3 of 3)
Table 2. Register Address and Description
WRITE (HEX)
01
03
05
07
09
0B
0D
0F
13
15
17
19
1B
1D
1F
21
23
25
3F
READ (HEX)
81
83
85
87
89
8B
8D
8F
93
95
97
99
9B
9D
9F
A1
A3
A5
BF
DESCRIPTION
Seconds
Minutes
Hours
Date
Month
Day
Year
Control
Century
Alarm Configuration
Reserved
Seconds Alarm Threshold
Minutes Alarm Threshold
Hours Alarm Threshold
Date Alarm Threshold
Month Alarm Threshold
Day Alarm Threshold
Year Alarm Threshold
Clock Burst
POR CONTENTS (HEX)
00
00
00
01
01
01
70
00
19
00
07
7F
7F
BF
3F
1F
07
FF
Not applicable
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