DS1347 Maxim, DS1347 Datasheet - Page 16

• Manufacturer Part Number: DS1347
• Description: The DS1347 SPI-compatible real-time clock (RTC) contains a real-time clock/calendar and 31 x 8 bits of static random-access memory (SRAM)
• Manufacturer: Maxim

PROCESS: CMOS
Low-Current, SPI-Compatible Real-Time Clock
Figure 4. Crystal PCB Layout
16
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GUARD RING
*
* *
VIA CONNECTION
GROUND PLANE
Chip Information
VIA CONNECTION
GROUND PLANE
SM WATCH CRYSTAL
VIA CONNECTION
**
* *
V
CC
PLANE
*
*
*
LAYER 1 TRACE
SM CAP
0.1µF
For the latest package outline information and land patterns
(footprints), go to www.maxim-ic.com/packages. Note that a
“+”, “#”, or “-” in the package code indicates RoHS status only.
Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
PACKAGE
8 TDFN-EP
TYPE
*
*
*
PACKAGE
*
T833+2
CODE
Package Information
**
**
LAYER 2 LOCAL GROUND PLANE
CONNECT ONLY TO PIN 4
GROUND PLANE VIA
OUTLINE
21-0137
NO.
*
*
*
*
PATTERN NO.
GROUND PLANE
VIA CONNECTION
90-0059
LAND