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FM31256 Scheda tecnica(PDF) 9 Page - List of Unclassifed Manufacturers

Il numero della parte FM31256
Spiegazioni elettronici  Integrated Processor Companion with Memory
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Produttore elettronici  ETC1 [List of Unclassifed Manufacturers]
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FM31256 Scheda tecnica(HTML) 9 Page - List of Unclassifed Manufacturers

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FM3104/16/64/256
Rev 0.2
May 2003
Page 9 of 22
Register Map
The RTC and processor companion functions are accessed via 25 special function registers mapped to a separate 2-
wire device ID. The interface protocol is described below. The registers contain timekeeping data, control bits, or
information flags. A description of each register follows the summary table below.
Register Map Summary Table
Nonvolatile =
Battery-backed =
Data
Address
D7
D6
D5
D4
D3
D2
D1
D0
Function
Range
Serial Number Byte 7
Serial Number 7
FFh
Serial Number Byte 6
Serial Number 6
FFh
Serial Number Byte 5
Serial Number 5
FFh
Serial Number Byte 4
Serial Number 4
FFh
Serial Number Byte 3
Serial Number 3
FFh
Serial Number Byte 2
Serial Number 2
FFh
Serial Number Byte 1
Serial Number 1
FFh
Serial Number Byte 0
Serial Number 0
FFh
10h
Counter 2 MSB
Event Counter 2 MSB
FFh
0Fh
Counter 2 LSB
Event Counter 2 LSB
FFh
0Eh
Counter 1 MSB
Event Counter 1 MSB
FFh
0Dh
Counter 1 LSB
Event Counter 1 LSB
FFh
0Ch
RC
CC
C2P
C1P
Event Count Control
0Bh
SNL
-
-
WP1
WP0
VBC
VTP1
VTP0
Companion Control
0Ah
WDE
-
-
WDT4
WDT3
WDT2
WDT1
WDT0
Watchdog Control
09h
WTR
POR
LB
-
WR3
WR2
WR1
WR0
Watchdog Restart/Flags
08h
10 years
years
Years
00-99
07h
00
0
10 mo
months
Month
1-12
06h
00
10 date
date
Date
1-31
05h
0
000
0
day
Day
1-7
04h
00
10 hours
hours
Hours
0-23
03h
0
10 minutes
minutes
Minutes
0-59
02h
0
10 seconds
seconds
Seconds
0-59
01h
/OSCEN
reserved
CALS
CAL4
CAL3
CAL2
CAL1
CAL0
CAL/Control
00h
reserved
CF
reserved
reserved
reserved
CAL
W
R
RTC Control
18h
17h
11h
16h
15h
14h
13h
12h


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