X1228 Datasheet PDF - Intersil Corporation

www.Datasheet-PDF.com

X1228
Intersil Corporation

Part Number X1228
Description Real Time Clock/Calendar/CPU Supervisor
Page 29 Pages


X1228 datasheet pdf
Download PDF
X1228 pdf
View PDF for Mobile


No Preview Available !

® NOT RDENaSCtEaEOWESMDhIMSEeELeS1NtIG2D0NE2SD8 FOR
X1228
4K (512 x 8), 2-WireRTC
May 18, 2006
FN8100.4
Real Time Clock/Calendar/CPU
Supervisor 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
• CPU Supervisor Functions
— Power-On Reset, Low Voltage Sense
— Watchdog Timer (SW Selectable: 0.25s, 0.75s,
1.75s, off)
• Battery Switch or Super Cap Input
• 512 x 8 Bits of EEPROM
— 64-Byte Page Write Mode
www.DataSheet4U.com
— 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
— 14 Ld SOIC and 14 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
BLOCK DIAGRAM
32.768kHz
X1
X2
PHZ/IRQ
Select
SCL
SDA
Serial
Interface
Decoder
RESET
Control
Decode
Logic
8
OSC Compensation
Oscillator
Frequency 1Hz
Divider
Timer
Calendar
Logic
Control/
Registers
(EEPROM)
Status
Registers
(SRAM)
Alarm
Watchdog
Timer
Low Voltage
Reset
Time
Keeping
Registers
(SRAM)
Compare
Alarm Regs
(EEPROM)
4K
EEPROM
ARRAY
Battery
Switch
Circuitry
VCC
VBACK
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005, 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.



No Preview Available !

X1228
Ordering Information
PART NUMBER
X1228S14-4.5A
X1228S14Z-4.5A (Note)
X1228S14I-4.5A
PART
MARKING
X1228S AL
X1228S ZAL
X1228S AM
VCC RANGE
(V)
2.7 to 5.5
VTRIP
4.63V ± 112mV
TEMP RANGE
(°C)
PACKAGE
0 to 70
14 Ld SOIC
0 to 70
14 Ld SOIC (Pb-free)
-40 to 85 14 Ld SOIC
PKG. DWG. #
MDP0027
MDP0027
MDP0027
X1228S14IZ-4.5A (Note) X1228S ZAM
-40 to 85 14 Ld SOIC (Pb-free)
MDP0027
X1228V14-4.5A
X1228V AL
0 to 70
14 Ld TSSOP
M14.173
X1228V14Z-4.5A (Note) X1228V ZAL
0 to 70
14 Ld TSSOP (Pb-free) M14.173
X1228V14I-4.5A
X1228V AM
-40 to 85 14 Ld TSSOP
M14.173
X1228V14IZ-4.5A (Note) X1228V ZAM
-40 to 85 14 Ld TSSOP (Pb-free) M14.173
X1228S14
X1228S
4.38V ± 112mV
0 to 70
14 Ld SOIC
MDP0027
X1228S14Z (Note)
X1228S Z
0 to 70
14 Ld SOIC (Pb-free)
MDP0027
X1228S14I
X1228S I
-40 to 85 14 Ld SOIC
MDP0027
X1228S14IZ (Note)
X1228S ZI
-40 to 85 14 Ld SOIC (Pb-free)
MDP0027
X1228V14
X1228V
0 to 70
14 Ld TSSOP
M14.173
X1228V14Z (Note)
X1228V Z
0 to 70
14 Ld TSSOP (Pb-free) M14.173
X1228V14I
X1228V I
-40 to 85 14 Ld TSSOP
M14.173
X1228V14IZ (Note)
X1228V ZI
-40 to 85 14 Ld TSSOP (Pb-free) M14.173
X1228S14-2.7A
X1228S AN
2.85V ± 100mV
0 to 70
14 Ld SOIC
MDP0027
X1228S14Z-2.7A (Note) X1228S ZAN
0 to 70
14 Ld SOIC (Pb-free)
MDP0027
X1228S14I-2.7A
X1228S AP
-40 to 85 14 Ld SOIC
MDP0027
X1228S14IZ-2.7A (Note) X1228S ZAP
-40 to 85 14 Ld SOIC (Pb_free)
MDP0027
X1228V14-2.7A
X1228V AN
0 to 70
14 Ld TSSOP
M14.173
X1228V14Z-2.7A (Note) X1228V ZAN
0 to 70
14 Ld TSSOP (Pb-free) M14.173
X1228V14I-2.7A
X1228V AP
-40 to 85 14 Ld TSSOP
M14.173
X1228V14IZ-2.7A (Note) X1228V ZAP
-40 to 85 14 Ld TSSOP (Pb-free) M14.173
X1228S14-2.7*
X1228S F
2.65V ± 100mV
0 to 70
14 Ld SOIC
MDP0027
X1228S14Z-2.7* (Note)
X1228S ZF
0 to 70
14 Ld SOIC (Pb-free)
MDP0027
X1228S14I-2.7
X1228S G
-40 to 85 14 Ld SOIC
MDP0027
X1228S14IZ-2.7 (Note)
X1228S ZG
-40 to 85 14 Ld SOIC (Pb-free)
MDP0027
X1228V14-2.7
X1228V F
0 to 70
14 Ld TSSOP
M14.173
X1228V14Z-2.7 (Note)
X1228V ZF
0 to 70
14 Ld TSSOP (Pb-free) M14.173
X1228V14I-2.7
X1228V G
-40 to 85 14 Ld TSSOP
M14.173
X1228V14IZ-2.7 (Note)
X1228V ZG
-40 to 85 14 Ld TSSOP (Pb-free) M14.173
*Add "T1" suffix for tape and reel.
Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate
termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
2 FN8100.4
May 18, 2006



No Preview Available !

X1228
PIN DESCRIPTIONS
14 Ld TSSOP/SOIC
X1
X2
NC
NC
NC
RESET
VSS
1
2
3
4
5
6
7
14 VCC
13 VBACK
12 PHZ/IRQ
11 NC
10 NC
9 SCL
8 SDA
NC = No internal connection
PIN ASSIGNMENTS
Pin Number
SOIC/TSSOP Symbol
1 X1
2 X2
6 RESET
7 VSS
8 SDA
9 SCL
12 PHZ/IRQ
13 VBACK
14 VCC
Brief Description
X1. The X1 pin is the input of an inverting amplifier. An external 32.768kHz quartz crystal
is used with the X1228 to supply a timebase for the real time clock. The recommended crystal
is a Citizen CFS206-32.768KDZF. Internal compensation circuitry is included to form a
complete oscillator circuit. Care should be taken in the placement of the crystal and the layout
of the circuit. Plenty of ground plane around the device and short traces to X1 are highly
recommended. See Application section for more recommendations.
X2. The X2 pin is the output of an inverting amplifier. An external 32.768kHz quartz crystal
is used with the X1228 to supply a timebase for the real time clock. The recommended crystal
is a Citizen CFS206-32.768KDZF. Internal compensation circuitry is included to form a
complete oscillator circuit. Care should be taken in the placement of the crystal and the layout
of the circuit. Plenty of ground plane around the device and short traces to X2 are highly
recommended. See Application section for more recommendations.
RESET Output – RESET. This is a reset signal output. This signal notifies a host
processor that the watchdog time period has expired or that the voltage has dropped below
a fixed VTRIP threshold. It is an open drain active LOW output. Recommended value for the
pullup resistor is 5kΩ. If unused, tie to ground.
VSS.
Serial Data (SDA). SDA is a bidirectional pin used to transfer data into and out of the
device. It has an open drain output and may be wire ORed with other open drain or open
collector outputs. The input buffer is always active (not gated).
An open drain output requires the use of a pull-up resistor. The output circuitry controls the
fall time of the output signal with the use of a slope controlled pull-down. The circuit is
designed for 400kHz 2-wire interface speeds.
Serial Clock (SCL). The SCL input is used to clock all data into and out of the device. The
input buffer on this pin is always active (not gated).
Programmable Frequency/Interrupt Output – PHZ/IRQ. This is either an output from the
internal oscillator or an interrupt signal output. It is a CMOS output.
When used as frequency output, this signal has a frequency of 32.768kHz, 4096Hz, 1Hz
or inactive.
When used as interrupt output, this signal notifies a host processor that an alarm has
occurred and an action is required. It is an active LOW output.
The control bits for this function are FO1 and FO0 and are found in address 0011h of the
Clock Control Memory map. See “Programmable Frequency Output Bits—FO1, FO0” on
page 14.
VBACK. This input provides a backup supply voltage to the device. VBACK supplies power
to the device in the event the VCC supply fails. This pin can be connected to a battery, a
Supercap or tied to ground if not used.
VCC.
3 FN8100.4
May 18, 2006



No Preview Available !

X1228
ABSOLUTE MAXIMUM RATINGS
Temperature Under Bias ................... -65°C to +135°C
Storage Temperature ........................ -65°C to +150°C
Voltage on VCC, VBACK and PHZ/IRQ
pin (respect to ground) ............................-0.5V to 7.0V
Voltage on SCL, SDA, X1 and X2
pin (respect to ground) ............... -0.5V to 7.0V or 0.5V
above VCC or VBACK (whichever is higher)
DC Output Current .............................................. 5 mA
Lead Temperature (Soldering, 10 sec) .............. 300°C
Stresses above those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only and the functional operation
of the device at these or any other conditions above
those indicated in the operational sections of this
specification is not implied. Exposure to absolute max-
imum rating conditions for extended periods may
affect device reliability.
DC OPERATING CHARACTERISTICS (Temperature = -40°C to +85°C, unless otherwise stated.)
Symbol
VCC
VBACK
VCB
VBC
Parameter
Main Power Supply
Backup Power Supply
Switch to Backup Supply
Switch to Main Supply
Conditions
Min
Typ
Max
Unit
2.7 5.5 V
1.8 5.5 V
VBACK -0.2
VBACK
VBACK -0.1
VBACK +0.2
V
V
Notes
OPERATING CHARACTERISTICS
Symbol
ICC1
Parameter
Read Active Supply
Current
ICC2
Program Supply Current
(nonvolatile)
ICC3
IBACK
ILI
ILO
VIL
Main Timekeeping
Current
Timekeeping Current –
(Low Voltage Sense and
Watchdog Timer
disabled
Input Leakage Current
Output Leakage Current
Input LOW Voltage
VIH
VHYS
VOL1
VOL2
VOH2
Input HIGH Voltage
Schmitt Trigger Input
Hysteresis
Output LOW Voltage for
SDA and RESET
Output LOW Voltage for
PHZ/IRQ
Output HIGH Voltage for
PHZ/IRQ
Conditions
VCC = 2.7V
VCC = 5.0V
VCC = 2.7V
VCC = 5.0V
VCC = 2.7V
VCC = 5.0V
VBACK = 1.8V
VBACK = 3.3V
VCC related level
VCC = 2.7V
VCC = 5.5V
VCC = 2.7V
VCC = 5.5V
VCC = 2.7V
VCC = 5.5V
Min
-0.5
VCC x 0.7 or
VBACK x 0.7
.05 x VCC or
.05 x VBACK
VCC x 0.7
VCC x 0.7
Typ
1.25
1.5
Max
400
800
2.5
3.0
10
20
Unit
µA
µA
mA
mA
µA
µA
µA
µA
Notes
1, 5, 7, 14
2, 5, 7, 14
3, 7, 8, 14, 15
3, 6, 9, 14, 15
“See Perfor-
mance Data”
10
10
VCC x 0.2 or
VBACK x 0.2
VCC + 0.5 or
VBACK + 0.5
µA
µA
V
V
V
10
10
13
13
13
0.4
0.4
VCC x 0.3
VCC x 0.3
V
V
11
11
V 12
4 FN8100.4
May 18, 2006



X1228 datasheet pdf
Download PDF
X1228 pdf
View PDF for Mobile


Related : Start with X122 Part Numbers by
X1226 Real Time Clock/Calendar with EEPROM X1226
Xicor
X1226 pdf
X1226 Real Time Clock/Calendar X1226
Intersil Corporation
X1226 pdf
X1227 Real Time Clock/Calendar/CPU Supervisor with EEPROM X1227
Xicor
X1227 pdf
X1227 RTC Real TimeClock/Calendar/ CPU Supervisor X1227
Intersil Corporation
X1227 pdf
X1228 Real Time Clock/Calendar/CPU Supervisor with EEPROM X1228
Xicor
X1228 pdf
X1228 Real Time Clock/Calendar/CPU Supervisor X1228
Intersil Corporation
X1228 pdf

Index :   0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z   

This is a individually operated, non profit site. If this site is good enough to show, please introduce this site to others.
Since 2010   ::   HOME   ::   Contact