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ISL12026IVZ датащи(PDF) 7 Page - Intersil Corporation

номер детали ISL12026IVZ
подробное описание детали  Real Time Clock/Calendar with I2C Bus??and EEPROM
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производитель  INTERSIL [Intersil Corporation]
домашняя страница  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL12026IVZ датащи(HTML) 7 Page - Intersil Corporation

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7
FN8231.8
October 28, 2008
Description
The ISL12026 device is a Real Time Clock with clock/
calendar, two polled alarms with integrated 512x8 EEPROM,
oscillator compensation and battery backup switch.
The oscillator uses an external, low-cost 32.768kHz crystal.
All compensation and trim components are integrated on the
chip. This eliminates several external discrete components
and a trim capacitor, saving board area and component cost.
The Real Time Clock keeps track of time with separate
registers for Hours, Minutes and Seconds. The Calendar has
separate registers for Date, Month, Year and Day-of-week.
The calendar is correct through 2099, with automatic leap
year correction.
The Dual Alarms can be set to any Clock/Calendar value for
a match. For instance, every minute, every Tuesday, or 5:23
AM on March 21. The alarms can be polled in the Status
Register or can provide a hardware interrupt (IRQ/FOUT
Pin). There is a pulse mode for the alarms allowing for
repetitive alarm functionality.
The IRQ/FOUT pin may be software selected to provide a
frequency output of 1Hz, 4096Hz, or 32,768Hz or inactive.
The device offers a backup power input pin. This VBAT pin
allows the device to be backed up by battery or SuperCap.
The entire ISL12026 device is fully operational from 2.7V to
5.5V and the clock/calendar portion of the ISL12026 device
remains fully operational down to 1.8V (Standby Mode).
The ISL12026 device provides 4k bits of EEPROM with 8
modes of BlockLock™ control. The BlockLock™ allows a
safe, secure memory for critical user and configuration data,
while allowing a large user storage area.
Pin Descriptions
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). The pull-up resistor on this pin must use the same
voltage source as VDD.
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).
This open drain output requires the use of a pull-up resistor.
The pull-up resistor on this pin must use the same voltage
source as VDD. The output circuitry controls the fall time of the
output signal with the use of a slope controlled pull-down. The
circuit is designed to comply with 400kHz I2C interface speed.
VBAT
This input provides a backup supply voltage to the device.
VBAT supplies power to the device in the event the VDD
supply fails. This pin can be connected to a battery, a
SuperCap or tied to ground if not used.
IRQ/FOUT (Interrupt Output/Frequency Output)
This dual function pin can be used as an interrupt or
frequency output pin. The IRQ/FOUT mode is selected via
the frequency out control bits of the INT register.
• Interrupt Mode. The pin provides an interrupt signal
output. This signal notifies a host processor that an alarm
has occurred and requests action. It is an open drain
active low output.
• Frequency Output Mode. The pin outputs a clock signal
which is related to the crystal frequency. The frequency
output is user selectable and enabled via the I2C bus. It is
an open drain output.
FIGURE 5. IDD3 vs VDD
FIGURE 6.
ΔF
OUT vs ATR SETTING
Typical Performance Curves (Continued)Temperature is +25°C unless otherwise specified.
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
1.82.3
2.83.3
3.84.3
4.8
5.3
VDD (V)
-40
-20
0
20
40
60
80
-32 -28 -24 -20 -16 -12 -8 -4 0
4
8 12 16 20 24 28
ATR SETTING
ISL12026, ISL12026A


Аналогичный номер детали - ISL12026IVZ

производительномер деталидатащиподробное описание детали
logo
Intersil Corporation
ISL12026IVZ INTERSIL-ISL12026IVZ Datasheet
381Kb / 24P
   Real Time Clock/Calendar with EEPROM
ISL12026IVZ INTERSIL-ISL12026IVZ Datasheet
560Kb / 24P
   Real Time Clock/Calendar with I2C Bus??and EEPROM
logo
Renesas Technology Corp
ISL12026IVZ RENESAS-ISL12026IVZ Datasheet
1,002Kb / 24P
   Real Time Clock/Calendar with I2C Bus??and EEPROM
logo
Intersil Corporation
ISL12026IVZ-T INTERSIL-ISL12026IVZ-T Datasheet
381Kb / 24P
   Real Time Clock/Calendar with EEPROM
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Аналогичное описание - ISL12026IVZ

производительномер деталидатащиподробное описание детали
logo
Intersil Corporation
ISL12025 INTERSIL-ISL12025 Datasheet
423Kb / 27P
   Real-Time Clock/Calendar with I2C Bus and EEPROM
ISL12029_1012 INTERSIL-ISL12029_1012 Datasheet
580Kb / 29P
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Renesas Technology Corp
ISL12028 RENESAS-ISL12028 Datasheet
1Mb / 29P
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logo
Intersil Corporation
ISL12028 INTERSIL-ISL12028_10 Datasheet
584Kb / 29P
   Real Time Clock/Calendar with I2C Bus??and EEPROM
ISL12028_1011 INTERSIL-ISL12028_1011 Datasheet
586Kb / 29P
   Real Time Clock/Calendar with I2C Bus??and EEPROM
ISL12026 INTERSIL-ISL12026_10 Datasheet
560Kb / 24P
   Real Time Clock/Calendar with I2C Bus??and EEPROM
logo
Renesas Technology Corp
ISL12026 RENESAS-ISL12026 Datasheet
1,002Kb / 24P
   Real Time Clock/Calendar with I2C Bus??and EEPROM
logo
Intersil Corporation
ISL12029 INTERSIL-ISL12029_10 Datasheet
580Kb / 30P
   Real Time Clock/Calendar with I2C Bus??and EEPROM
logo
Renesas Technology Corp
ISL12025 RENESAS-ISL12025 Datasheet
1Mb / 28P
   Real-Time Clock/Calendar with I2C Bus??and EEPROM
ISL12029 RENESAS-ISL12029 Datasheet
1Mb / 29P
   Real Time Clock/Calendar with I2C Bus™ and EEPROM
December 16, 2010
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