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PT7C4372A Datasheet(PDF) 7 Page - Pericom Semiconductor Corporation

Part # PT7C4372A
Description  Real-time Clock Module
Download  30 Pages
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Manufacturer  PERICOM [Pericom Semiconductor Corporation]
Direct Link  http://www.pericom.com
Logo PERICOM - Pericom Semiconductor Corporation

PT7C4372A Datasheet(HTML) 7 Page - Pericom Semiconductor Corporation

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12-07-0001
PT0150-8
07/04/12
7
PT7C4372A/4372C
Real-time Clock Module (I
2C Bus)
Registers
Allocation of registers
Addr.
Function
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
Second
-
*5
S40
S20
S10
S8
S4
S2
S1
1
Minutes
-
M40
M20
M10
M8
M4
M2
M1
2
Hours
-
-
H20 or
P, /A
H10
H8
H4
H2
H1
3
Days of the week
-
-
-
-
-
W4
W2
W1
4
Days
-
-
D20
D10
D8
D4
D2
D1
5
Months
-
-
-
M10
M8
M4
M2
M1
6
Years
Y80
Y40
Y20
Y10
Y8
Y4
Y2
Y1
7
Time Trimming
/XSL
F6
F5
F4
F3
F2
F1
F0
8
Alarm_A: Minute
-
AM40
AM20
AM10
AM8
AM4
AM2
AM1
9
Alarm_A: Hour
-
-
AH20 or
AP, /A
AH10
AH8
AH4
AH2
AH1
A
Alarm_A: Day
-
AW6
AW5
AW4
AW3
AW2
AW1
AW0
B
Alarm_B: Minute
-
BM40
BM20
BM10
BM8
BM4
BM2
BM1
C
Alarm_B: Hour
-
-
BH20 or
BP, /A
BH10
BH8
BH4
BH2
BH1
D
Alarm_B: Day
-
BW6
BW5
BW4
BW3
BW2
BW1
BW0
E
Control 1
AALE
BALE
SL2
SL1
TEST
*2
CT2
CT1
CT0
F
Control 2
-
-
/12, 24
ADJ or
XSTP
*3
/CLEN
CTFG
AAFG
BAFG
Caution points:
*1. All bits marked with "-" are read-only bits. Their value when read is always "0".
*2. The TEST bit is used by the manufacturer for testing. Be sure to set "0" for this bit.
*3. ADJ is for write and XTSP is for read operation. The XTSP bit is set to “0” by writing data into the control register 2 for
normal oscillation. When XSTP is set to “1”, the Time Trimming register, Control 1 register, /CLEN and TEST bits are reset
to “0”.
*4. All bits marked with "-" are read-only bits. Their value when read is always "0".


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