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参数资料
| 型号： | MK3230-02STR |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 80 MHz, OTHER CLOCK GENERATOR, PDSO16 |
| 封装： | 0.150 INCH, SOIC-16 |
| 文件页数： | 1/4页 |
| 文件大小： | 68K |
| 代理商： | MK3230-02STR |
MK3230
Portable System Clock Synthesizer
MDS 3230 F
1
Revision 022798
Printed 11/16/00
Integrated Circuit Systems, Inc.525 Race StreetSan JoseCA95126(408)295-9800telwww.icst.com
I C R O
C LOC K
Packaged in 16 pin narrow (0.150”) SOIC
Input crystal frequency of 32.768 kHz
Lowest power solution available
Lowest profile clock solution where height is critical
Output clock frequencies up to 80 MHz
Five output clocks
3.3V or 5.0V operation
Duty cycle of 45/55
Seven selectable CPU frequencies
CPU and peripheral clock power downs
Separate battery supply pin for 32 kHz
IDD less than 5A when 32 kHz running
Available with either 12MHz (-01) or 16MHz (-02)
keyboard clock output
14.3MHz output is not suitable for driving PLL for
CRT. Will drive all other functions
32kHz crystals require long startup (>500ms)
The MK3230 is the smallest size, lowest power system
clock synthesizer available. It is the ideal way to
generate clocks for portable computers, 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 32.768kHz, CPU, system, keyboard
controller, and floppy (or super I/O) controller output
clocks.
The device has two power down modes. From the CPU
decoding table (when FS0, FS1, and FS2 all are low),
the CPU and 14.3 MHz system clocks can be turned
off. Also, the keyboard and 24 MHz peripheral clocks
can be shut off from PD24+KBD (pin 10). The part has
a separate VDD32 pin for the 32 kHz clock, allowing
it to run at a different voltage (down to 2.0V) from the
rest of the chip, allowing it to run from a back-up
battery.
Description
Features
Crystal
Oscillator
VDD
GND
X1
X2
Clock Synthesis
and Control
Circuitry
CPUCLK
14.32 MHz
24.00 MHz
32.768 kHz
12 or 16 MHz
Output
Buffer
Output
Buffer
Output
Buffer
Output
Buffer
Output
Buffer
CPUS0
CPUS1
CPUS2
32.768 kHz
crystal
Block Diagram
VDD32
PD24+KBD
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MK3233 | 制造商:ICS 制造商全称:ICS 功能描述:Handheld System Clock Synthesizer |
| MK3233-01S | 制造商:ICS 制造商全称:ICS 功能描述:Handheld System Clock Synthesizer |
| MK3233-01STR | 制造商:ICS 制造商全称:ICS 功能描述:Handheld System Clock Synthesizer |
| MK3233-02S | 制造商:ICS 制造商全称:ICS 功能描述:Handheld System Clock Synthesizer |
| MK3233-02STR | 制造商:ICS 制造商全称:ICS 功能描述:Handheld System Clock Synthesizer |
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