MAX6900 Maxim, MAX6900 Datasheet

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MAX6900

Manufacturer Part Number
MAX6900
Description
I2C-Compatible RTC in a TDFN
Manufacturer
Maxim
Datasheet

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The MAX6900, I
(RTC) in a 6-pin TDFN package contains a real-time
clock/calendar and 31-byte
dom access memory (SRAM). The real-time clock/cal-
endar provides seconds, minutes, hours, day, date,
month, and year information. The end of the month 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 24hr or 12hr for-
mat with an AM/PM indicator.
19-1942; Rev 3; 6/03
I
of Maxim Integrated Products, Inc., or one of its sublicensed
Associated Companies, conveys a license under the Philips I
Patent Rights to use these components in an I
ed that the system conforms to the I
as defined by Philips.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
SPI is a trademark of Motorola, Inc.
2
MAX6900
MAX6901
MAX6902
C is a trademark of Philips Corp. Purchase of I
PART
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V
________________________________________________________________ Maxim Integrated Products
CC
X1
X2
C™-bus-compatible real-time clock
I
3-wire
SPI™ compatible
2
C compatible
1
2
3
SERIAL BUS
General Description
MAX6900
TDFN
Pin Configuration
2
8-bit wide of static ran-
C Standard Specification
6 SDA
5 SCL
4
Applications
GND
2
C system, provid-
2
C components
I
2
SRAM
31
31
31
C-Compatible RTC in a TDFN
8
8
8
2
C
o Real-Time Clock Counts Seconds, Minutes,
o Leap Year Compensation Valid up to Year 2100
o Fast (400kHz) I
o 31
o Uses Standard 32.768kHz, 12.5pF Load, Watch
o Ultra-Low 225nA (typ) Timekeeping Current
o Single-Byte or Multiple-Byte (Burst Mode) Data
o 6-Pin 3mm x 3mm x 0.8mm TDFN Surface-Mount
o No External Crystal Bias Resistors or Capacitors
FUNCTION
MAX6900ETT-T
Related Real-Time Clock Products
ALARM
Hours, Date, Month, Day, and Year
2.0V to 5.5V
Crystal
Transfer for Read or Write of Clock Registers or
SRAM
Package
Required
Polled
Polled
PART
8 SRAM for Scratchpad Data Storage
V
µC
CC
Typical Operating Circuit
RPU = t
RPU
-40°C to +85°C
2
TEMP RANGE
V
C-Bus-Compatible Interface from
CC
r
/C
FREQUENCY
bus
Ordering Information
OUTPUT
RPU
32kHz
0.01µF
5
6
SCL
SDA
MAX6900
PIN-
PACKAGE
6 TDFN
V
GND
V
CC
CC
1
4
X1
X2
PIN-PACKAGE
2
3
Features
6 TDFN
8 TDFN
8 TDFN
CRYSTAL
MARK
TOP
AEU
1

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