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Description
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The MAX6909/MAX6910 are I²C*-compatible real-time
clocks (RTCs) with a microprocessor supervisor, optional
trickle charger (MAX6910 only), backup power
source, and NV RAM controller. The MAX6909/MAX6910 provide alarm outputs to indicate a crystal failure,
a switchover to battery power, and time and date
indication. The NV RAM is 31 bytes of static RAM that
are available for scratchpad storage. The MAX6909/MAX6910 are controlled through a 2-wire serial bus.
The real-time clock/calendar provides seconds, minutes,
hours, day, date, month, and year information.
The date is automatically adjusted for months with
fewer than 31 days, including corrections for leap year
up to the year 2100. The clock operates in either the
24-hour or 12-hour format with an AM/PM indicator. A
time/date-programmable ALARM output completes the
features list for the real-time clock section of the
MAX6909/MAX6910. The alarm function can also be
used in a polled mode by periodically reading the
alarm out status bit in the minutes register. A crystal fail
output, CX FAIL-bar, indicates loss of accurate timekeeping
due to crystal problems.
A built-in µP supervisor with an open-drain reset
ensures the µP powers up in a known state. A reset
threshold is available for 3V or 3.3V supplies. The piezo
transducer output, PZT, is register selectable for one of
four frequencies, can be turned on and off through a
register bit, or selected to go on when the ALM-bar, alarm
output, goes active.
The MAX6909/MAX6910 are available in a 20-pin QSOP
package and operate over the -40°C to +85°C temperature
range.
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| MAX6909 |
Free
Sample |
Buy |
Status |
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Package:
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TYPE PINS FOOTPRINT
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DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis |
MAX6909EO30+
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N/A
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No Longer Available
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QSOP;20 pin;54 mm²
Outline Drawing: 21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20+2*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis
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MAX6909EO33+
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N/A
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No Longer Available
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QSOP;20 pin;54 mm²
Outline Drawing: 21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20+2*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis
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MAX6909EO30
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N/A
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No Longer Available
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QSOP;20 pin;54 mm²
Outline Drawing: 21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20-2*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis
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MAX6909EO30-T
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N/A
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No Longer Available
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Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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MAX6909EO33
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N/A
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No Longer Available
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QSOP;20 pin;54 mm²
Outline Drawing: 21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20-2*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis
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MAX6909EO33-T
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N/A
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No Longer Available
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Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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MAX6909EO30+T
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N/A
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No Longer Available
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Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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MAX6909EO33+T
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N/A
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No Longer Available
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Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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| MAX6910 |
Free
Sample |
Buy |
Status |
|
Package:
|
TYPE PINS FOOTPRINT
|
| |
DRAWING CODE/VAR *
|
|
Temp |
RoHS/Lead-Free?
Materials Analysis |
MAX6910EO30+
|
|
N/A
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No Longer Available
|
QSOP;20 pin;54 mm²
Outline Drawing: 21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20+2*
|
-40°C to +85°C
|
RoHS/Lead-Free: Lead Free
Materials Analysis
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MAX6910EO33+
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N/A
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No Longer Available
|
QSOP;20 pin;54 mm²
Outline Drawing: 21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20+2*
|
-40°C to +85°C
|
RoHS/Lead-Free: Lead Free
Materials Analysis
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MAX6910EO30
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N/A
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No Longer Available
|
QSOP;20 pin;54 mm²
Outline Drawing: 21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20-2*
|
-40°C to +85°C
|
RoHS/Lead-Free: No
Materials Analysis
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MAX6910EO30-T
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N/A
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No Longer Available
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Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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MAX6910EO33
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N/A
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No Longer Available
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QSOP;20 pin;54 mm²
Outline Drawing: 21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20-2*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis
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MAX6910EO33-T
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N/A
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No Longer Available
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Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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MAX6910EO30+T
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N/A
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No Longer Available
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Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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MAX6910EO33+T
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N/A
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No Longer Available
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Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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