PT7C4363 Datasheet, PDF (9/22 Pages) Pericom Semiconductor Corporation – Real-time Clock Module (I2C Bus)

Data Sheet
PT7C4363
Real-time Clock Module (I²C Bus)
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e) Time count
• STOP
STOP
Read / Write
Data
0 _{RTC source clock runs.}
Description
Default
1 ^{All RTC divider chain flip-flops are asynchronously set to logic 0; the RTC clock is stopped}
(SQW at 32.768 kHz is still available)
f) Test
• TEST1
TEST1
Read / Write
Data
0 Normal mode.
1 EXT_CLK test mode.
Description
Default
• TESTC
TESTC
Read / Write
Data
Description
0 _{Power-on reset override facility is disabled; set to logic 0 for normal operation.}
1 _{Power-on reset override may be enabled}
Default
3. Time Counter
Time digit display (in BCD code):
• Second digits: Range from 00 to 59 and carried to minute digits when incremented from 59 to 00.
• Minute digits: Range from 00 to 59 and carried to hour digits when incremented from 59 to 00.
• Hour digits: See description on the /12, 24 bit. Carried to day and day-of-the-week digits when incremented from 11 p.m. to
12 a.m. or 23 to 00.
Addr.
Description
D7
D6
D5
D4
D3
D2
D1
D0
(hex)
02
Seconds
(default)
OSF^*1
1
S40
S20
S10
S8
S4
S2
S1
Undefined Undefined Undefined Undefined Undefined Undefined Undefined
03
Minutes
(default)
×
M40
M20
M10
M8
M4
M2
M1
0
Undefined Undefined Undefined Undefined Undefined Undefined Undefined
04
Hours
(default)
×
×
H20
H10
H8
H4
H2
H1
0
0
Undefined Undefined Undefined Undefined Undefined Undefined
*1 Note: Indicate clock integrity. When the bit is 1, the clock integrity is no longer guaranteed and the time need be adjusted.
PT0207(07/05)
9
Ver: 0