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參數(shù)資料
| 型號(hào)： | MK3235-01SLFTR |
| 元件分類： | 時(shí)鐘產(chǎn)生/分配 |
| 英文描述： | 14.3 MHz, OTHER CLOCK GENERATOR, PDSO16 |
| 封裝： | SOIC-16 |
| 文件頁(yè)數(shù)： | 2/4頁(yè) |
| 文件大?。?/td> | 67K |
| 代理商： | MK3235-01SLFTR |
MK3235
Handheld System Clock Synthesizer
MDS 3235 D
2
Revision 092397
Printed 11/16/00
Integrated Circuit Systems, Inc.525 Race StreetSan JoseCA95126(408)295-9800telwww.icst.com
I C R O
C LOC K
Pin Assignment
Number
Name
Type
Description
1
X2
O
Crystal connection. Connect to 32.768 kHz crystal.
2
X1
I
Crystal connection. Connect to 32.768 kHz crystal.
3
VDD32
P
Separate power supply connection for 32.768kHz clock. Will operate to 2.0V.
4
VDD
P
Connect to +3.3V or +5V. Must be the same voltage as pin 14.
5
GND
P
Connect to ground.
6
COMMCLK
O
Serial communications (1.84 on -01 version, or 3.68MHz on -02 version) clock output.
7
32K
O
32.768 kHz square wave clock output.
8
PDCOMM
I
Power Down serial Communications and 14.3M clock outputs (stop low) when low.
9
GND
P
Connect to ground.
10
PD
I
Powers Down everything but 32kHz oscillator internally. 32kHz output buffer is off.
11
14.3M
O
14.318 MHz output clock.
12
GND
P
Connect to ground.
13
PD14
I
Power Down 14.318MHz clock output (stops low) when low.
14
VDD
P
Connect to +3.3V or +5V. Must be the same voltage as pin 4.
15
GND
P
Connect to ground.
16
GND
P
Connect to ground.
Pin Descriptions
Type: I = Input, O = output, P = power supply connection
Power Down status: Output clocks will stop in a low state when powered down
1
8
9
16
2
3
4
5
6
7
10
11
12
13
14
15
GND
PDCOMM
PD14
14.3M
PD
GND
VDD
GND
32K
X2
GND
COMMCLK
VDD32
VDD
X1
External Components
The MK3235 requires a minimum number of external components for proper operation. Decoupling
capacitors of 0.1F should be connected between VDD and GND, and VDD32 and GND, as close to the
MK3235 as possible. A series resistor should be used on the VDD32 supply. A series termination resistor of
33
may be used for each clock output, except the 32.768 kHz. For tuning the real time clock output, use
a 32.768 kHz crystal with a load capacitance of 12.5pF, and connect a 20pF±5% (NPO dielectric)
capacitor between each crystal pin and ground. The 32.768 kHz crystal must be connected as close to the
chip as possible. Consult MicroClock for a recommended external circuit schematic.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MK3235-01STR | 14.3 MHz, OTHER CLOCK GENERATOR, PDSO16 |
| MK3721S | 28 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| MK3721DLF | 28 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| MK3721STR | 28 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| MK3722GLF | 27 MHz, OTHER CLOCK GENERATOR, PDSO16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MK3235-01STR | 制造商:ICS 制造商全稱:ICS 功能描述:Handheld System Clock Synthesizer |
| MK3235-02S | 制造商:ICS 制造商全稱:ICS 功能描述:Handheld System Clock Synthesizer |
| MK3235-02STR | 制造商:ICS 制造商全稱:ICS 功能描述:Handheld System Clock Synthesizer |
| MK3242F | 制造商:Ohmite Mfg Co 功能描述: |
| MK3243F | 制造商:Ohmite Mfg Co 功能描述: |
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