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16-pin, 300-mil, SOIC package
VDD32 Supply
The
ICS9134-06
and
ICS9134-07
have a separate power sup-
ply for the 32.768 kHz oscillator circuitry. This allows the
32 kHz clock to run from a battery or other source while the
main power to the chip is disconnected. The VDD32 supply is
guaranteed to operate down to +2.0V, with the clock consuming
less than 10碌A(chǔ) at +3.3V with the main VDD at 0V.
The frequencies and power-down options in the
ICS9134-06
and
ICS9134-07
are mask programmable. Customer specific
masks can be made and prototypes delivered within 6-8 weeks
from receipt of order. Integrated Circuit Systems also offers
standard versions, such as that described in this data sheet.
Applications
Notebook/Palmtop Computers: The
ICS9134-06
and
ICS9134-07
work with +3.3V and +5V and a single
32.768 kHz crystal, making it the ideal solution for generating
clocks in portables with minimum board space. The user can
save power by using this single part instead of oscillators or
other frequency generators. The
ICS9134-06
and
ICS9134-07
further reduce the current consumption by having the ability to
completely shut down the individual clocks when not in use, while
still maintaining the separately powered 32.768 kHz clock.
Block Diagram
VDD32
32.768 kHz
crystal
32.768 kHz
Reference
Clock
Clock
Generator
1
Clock
Generator
2
CPUCLK
14.318 MHz
Clock
Generator
3
Peripheral
Clocks
Fir is a trademark of Picopower Corporation.
9134-06 9134-07 RevC111695