DS3234(2006) 查看數據表（PDF） - Maxim Integrated
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DS3234 Datasheet PDF : 20 Pages
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Extremely Accurate SPI Bus RTC with
Integrated Crystal and SRAM
Figure 1. Address Map for DS3234 Timekeeping Registers and SRAM
ADDRESS
READ/WRITE
MSB
BIT 7
BIT 6
BIT 5 BIT 4 BIT 3
BIT 2
BIT 1
LSB
BIT 0
FUNCTION
RANGE
00h
80h
01h
81h
02h
82h
03h
83h
04h
84h
0
10 Seconds
0
10 Minutes
0
12/24 AM/PM 10 hr
10 hr
0
0
0
0
0
0
0
10 Date
Seconds
Minutes
Hour
Day
Date
Seconds
Minutes
Hours
Day
Date
00–59
00–59
1-12 +AM /PM
00-23
1-7
01-31
05h
85h Century
0
0
10 Mo
06h
86h
10 Year
Month
Year
Month/
Century
Year
01-12 + Century
00-99
07h
87h
A1M1
10 Seconds
Seconds
Alarm 1
Seconds
00-59
08h
88h
A1M2
10 Minutes
AM/PM
09h
89h
A1M3 12/24
10 hr
10 hr
Minutes
Hour
Alarm 1
Minutes
Alarm 1
Hours
00-59
1-12 +AM /PM
00-23
0Ah
8Ah
A1M4 DY/DT
0
10 Date
Day
Date
Alarm 1 Day
Alarm 1 Date
1-7
01-31
0Bh
8Bh
A2M2
10 Minutes
0Ch
8Ch
A2M3
12/24 AM/PM 10 hr
10 hr
Minutes
Hour
Alarm 2
Minutes
Alarm 2
Hours
00-59
1-12 +AM /PM
00-23
0Dh
8Dh
A2M4 DY/DT
0
10 Date
Day
Date
Alarm 2 Day
Alarm 2 Date
0Eh
8Eh
EOSC BBSQW CONV RS2
RS1 INTCN A2IE A1IE
Control
0Fh
8Fh
OSF BB32kHz CRATE1 CRATE0 EN32kHz BSY
A2F
A1F
Control/
Status
1-7
01-31
—
—
10h
90h
SIGN
DATA DATA DATA DATA
DATA DATA DATA Crystal Aging
—
Offset
11h
91h
SIGN DATA DATA DATA DATA DATA DATA DATA Temp MSB
Read Only
12h
92h
DATA DATA
0
0
0
0
0
0
Temp LSB
Read Only
Disable
13h
93h
0
0
0
0
0
0
0
BB_TD
Temp
—
Conversions
14h–17h 94h–97h
—
—
—
—
—
—
—
—
Reserved
—
18h
98h
A7
A6
A5
A4
A3
A2
A1
A0
SRAM
Address
—
19h
99h
D7
D6
D5
D4
D3
D2
D1
D0
SRAM Data
—
Note: Unless otherwise specified, the registers’ state is not defined when power is first applied. Bits defined as 0 cannot be written
to 1 and will always read 0.
12 ____________________________________________________________________
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