Datasheet > MK3233-01STR

MK3233-01STR

更新时间： 2024-11-09 22:13:23

品牌	Logo	应用领域
矽成 - ICSI		晶体外围集成电路光电二极管时钟
页数	文件大小	规格书
4页	72K
描述
Handheld System Clock Synthesizer

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MK3233-01STR 数据手册

MK3233

Handheld System Clock Synthesizer

_{ICR O}C_{LOC K}

Description

Features

• Input crystal frequency of 32.768 kHz

• Lowest power solution available

The MK3233 is the smallest size, lowest power system

clock synthesizer available. It is the ideal way to

generate clocks for smart cell phones, PDAs, and other

devices where low power is required. Using analog

Phase-Locked Loop (PLL) techniques, the device

operates from a single 32.768 kHz crystal to produce

the 32.768 kHz, CPU, and serial communications

output clocks.

• Operating temperature of -20 to 70 °C

• Output clock frequencies up to 50 MHz

• Three output clocks

• 3.3 V or 5.0 V operation

The device has multiple power down modes for the

CPU, communications, and 32.768 kHz clocks.

• Duty cycle of 45/55

• Eight selectable CPU frequencies

• CPU or Communication clock power down

• Separate battery supply pin for 32 kHz runs to 2V

• IDD less than 4µA when 32 kHz running

• Serial port clocks of 1.8432 MHz (-01 version) or

3.6864 MHz (-02 version)

The MK3233 can save board space and cost even if it

only replaces the 32 kHz oscillator circuitry and one

additional surface mount crystal or oscillator. The

extremely low IDD, the ease of surface mounting, the

upgradeability of CPU frequencies, and the power

down capability are added benefits in using the part.

• Packaged in 16 pin narrow SOIC

Block Diagram

VDD GND

CPUS0

CPUS1

CPUS2

CPU

Output

Buffer

Clock Synthesis

and Control

Circuitry

CPUCLK

PDCPU

PDCOMM

Communications

Clock Synthesis

and Control

Output

Buffer

1.843 or

3.686 MHz

VDD32

Circuitry

32.768 kHz

crystal

Crystal

Oscillator

clock

Output

Buffer

32.768 kHz

MDS 3233 F

Revision 11070

Printed 11/16/00

Integrated Circuit Systems, Inc.• 525 Race Street• San Jose • CA • 95126• (408) 295-9800 tel • www.icst.com

12 3 4

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