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X1226V8I 데이터 시트보기 (PDF) - Intersil

부품명X1226V8I Intersil
Intersil Intersil
상세내역4K (512 x 8), 2-Wire™ RTC
X1226V8I Datasheet PDF : 25 Pages
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X1226
once reaching the end of a section, will wrap around to
the start of the section. A read or write can begin at any
address in the CCR.
It is not necessary to set the RWEL bit prior to writing
the status register. Section 5 (status register) supports
a single byte read or write only. Continued reads or
writes from this section terminates the operation.
The state of the CCR can be read by performing a ran-
dom read at any address in the CCR at any time. This
returns the contents of that register location. Additional
registers are read by performing a sequential read.
The read instruction latches all Clock registers into a
buffer, so an update of the clock does not change the
time being read. A sequential read of the CCR will not
result in the output of data from the memory array. At
the end of a read, the master supplies a stop condition
to end the operation and free the bus. After a read of
the CCR, the address remains at the previous address
+1 so the user can execute a current address read of
the CCR and continue reading the next Register.
Table 1. Clock/Control Memory Map
Addr.
Type
Reg
Name
7
6
5
Bit
4
3
2
Range
1
0 (optional)
003F Status
SR BAT
AL1
AL0
0
0
RWEL
WEL
RTCF
01h
0037
RTC
Y2K
0
0036 (SRAM) DW
0
0
Y2K21 Y2K20 Y2K13
0
0
Y2K10 19/20 20h
0
0
0
0
DY2
DY1
DY0
0-6 00h
0035
YR Y23
Y22
Y21
Y20
Y13
Y12
Y11
Y10
0-99 00h
0034
MO
0
0
0
G20
G13
G12
G11
G10
1-12 00h
0033
DT
0
0
D21
D20
D13
D12
D11
D10
1-31 00h
0032
HR MIL
0
H21
H20
H13
H12
H11
H10
0-23 00h
0031
MN
0
M22
M21
M20
M13
M12
M11
M10
0-59 00h
0030
SC
0
S22
S21
S20
S13
S12
S11
S10
0-59 00h
0013 Control DTR
0
0
0
0
0
DTR2
DTR1
DTR0
00h
0012 (EEPROM) ATR
0
0
ATR5
ATR4
ATR3
ATR2
ATR1
ATR0
00h
0011
INT
IM
AL1E
AL0E
FO1
FO0
X
X
X
00h
0010
BL
BP2
BP1
BP0
0
0
0
0
0
00h
000F Alarm1 Y2K1 0
000E (EEPROM) DWA1 EDW1
0 A1Y2K21 A1Y2K20 A1Y2K13
0
0
0
0
0
DY2
0
A1Y2K10 19/20 20h
DY1
DY0
0-6 00h
000D
YRA1
Unused - Default = RTC Year value (No EEPROM) - Future expansion
000C
MOA1 EMO1
0
0
A1G20 A1G13 A1G12 A1G11 A1G10 1-12 00h
000B
DTA1 EDT1
0
A1D21 A1D20 A1D13 A1D12 A1D11 A1D10 1-31 00h
000A
HRA1 EHR1
0
A1H21 A1H20 A1H13 A1H12 A1H11 A1H10 0-23 00h
0009
MNA1 EMN1 A1M22 A1M21 A1M20 A1M13 A1M12 A1M11 A1M10 0-59 00h
0008
SCA1 ESC1 A1S22 A1S21 A1S20 A1S13 A1S12 A1S11 A1S10 0-59 00h
0007 Alarm0 Y2K0 0
0006 (EEPROM) DWA0 EDW0
0 A0Y2K21 A0Y2K20 A0Y2K13
0
0
0
0
0
DY2
0
A0Y2K10 19/20 20h
DY1
DY0
0-6 00h
0005
YRA0
Unused - Default = RTC Year value (No EEPROM) - Future expansion
0004
MOA0 EMO0
0
0
A0G20 A0G13 A0G12 A0G11 A0G10 1-12 00h
0003
DTA0 EDT0
0
A0D21 A0D20 A0D13 A0D12 A0D11 A0D10 1-31 00h
0002
HRA0 EHR0
0
A0H21 A0H20 A0H13 A0H12 A0H11 A0H10 0-23 00h
0001
MNA0 EMN0 A0M22 A0M21 A0M20 A0M13 A0M12 A0M11 A0M10 0-59 00h
0000
SCA0 ESC0 A0S22 A0S21 A0S20 A0S13 A0S12 A0S11 A0S10 0-59 00h
6
FN8098.3
May 8, 2006
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DESCRIPTION
The X1226 device is a Real Time Clock with clock/calendar, two polled alarms with integrated 512x8 EEPROM, oscillator compensation, and battery backup switch.

Real Time Clock/Calendar with EEPROM
FEATURES
• Real Time Clock/Calendar
   —Tracks Time in Hours, Minutes, and Seconds
   —Day of the Week, Day, Month, and Year
• 2 Polled Alarms (Non-volatile)
   —Settable on the Second, Minute, Hour, Day of the Week, Day, or Month
   —Repeat Mode (periodic interrupts)
• Oscillator Compensation On Chip
   —Internal Feedback Resistor and Compensation Capacitors
   —64 Position Digitally Controlled Trim Capacitor
   —6 Digital Frequency Adjustment Settings to ±30ppm
• Battery Switch or Super Cap Input
• 512 x 8 Bits of EEPROM
   —64-Byte Page Write Mode
   —8 Modes of Block Lock™ Protection
   —Single Byte Write Capability
• High Reliability
   —Data Retention: 100 Years
   —Endurance: 100,000 Cycles Per Byte
• 2-Wire™ Interface Interoperable with I2C
   —400kHz Data Transfer Rate
• Frequency Output (SW Selectable: Off, 1Hz, 4096Hz or 32.768kHz)
• Low Power CMOS
   —1.25µA Operating Current (Typical)
• Small Package Options
   —8 Ld SOIC and 8 Ld TSSOP
• Repetitive Alarms
• Temperature Compensation
• Pb-Free Plus Anneal Available (RoHS Compliant)

APPLICATIONS
• Utility Meters
• HVAC Equipment
• Audio/Video Components
• Set Top Box/Television
• Modems
• Network Routers, Hubs, Switches, Bridges
• Cellular Infrastructure Equipment
• Fixed Broadband Wireless Equipment
• Pagers/PDA
• POS Equipment
• Test Meters/Fixtures
• Office Automation (Copiers, Fax)
• Home Appliances
• Computer Products
• Other Industrial/Medical/Automotive

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