- 您現在的位置：買賣IC網 > PDF目錄363887 > W42C32 (Cypress Semiconductor Corp.) Spread Spectrum Frequency Timing Generator PDF資料下載
參數資料
| 型號： | W42C32 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | Spread Spectrum Frequency Timing Generator |
| 中文描述： | 擴頻頻率定時發生器 |
| 文件頁數： | 2/8頁 |
| 文件大小： | 131K |
| 代理商： | W42C32 |
W42C32-05
2
Pin Definitions
[1]
Pin Name
CLKOUT
Pin No.
8
Pin
Type
O
Pin Description
Output Modulated Frequency
:
Frequency is set using FS0:2
(refer to
Table 1).
REFOUT
16
O
Reference Output:
A buffered version of the input frequency.
Crystal Connection or External Reference Frequency Input:
This pin has dual func-
tions. It can be used as either an external crystal connection, or as an external reference
frequency input.
X1
2
I
X2
3
I
Crystal Connection:
If using an external reference, this pin must be left unconnected.
Spread Spectrum Control (active LOW):
Pulling this input signal HIGH turns the internal
modulating waveform off. This pin has an internal pull-down resistor.
SSON#
13
I
FS0
6
I
Frequency Selection Bit 0:
This pin selects the frequency and spreading characteristics.
Refer to
Table 1
. This pin has an internal pull-up resistor.
FS1
14
I
Frequency Selection Bit 1:
This pin selects the frequency and spreading characteristics.
Refer to
Table 1
. This pin has an internal pull-up resistor.
FS2
15
I
Frequency Selection Bit 2:
This pin selects the frequency and spreading characteristics.
Refer to
Table 1
(note the V
DD
specification). This pin has an internal pull-up resistor.
Power-down (active LOW):
Enabling power-down reduces current consumption and
disables the clock outputs. This pin has an internal pull-up resistor.
Reference Clock Selection Input:
Pulling this signal LOW turns the REFOUT clock
output on. This pin has an internal pull-up resistor.
Reset:
A reset starts the spread spectrum modulating frequency at the beginning point
of the modulation profile. This pin has an internal pull-down resistor. To reset the spread
spectrum modulating frequency, pull this pin from LOW to HIGH.
Power Connection:
Connected to either 3.3V or 5.0V power supply. V
DD
and AV
DD
must
be the same voltage level.
PD#
1
I
REFEN#
9
I
RESET
12
I
VDD
11
P
AVDD
10
P
Analog Power Connection:
Connected to either 3.3V or 5.0V power supply. V
DD
and
AV
DD
must be the same voltage level.
Ground Connection:
Connect to the common system ground plane.
Analog Ground Connection:
Connect to the common system ground plane.
GND
4
G
AGND
5
G
TEST
7
I
Three-state Input:
Pulling this input pin and REFEN# pin HIGH, CLKOUT will be
three-stated. This pin has an internal pull-down resistor.
[2]
Notes:
1.
2.
Pull-up resistors not CMOS level.
Pulling PD# and REFEN# input pins HIGH, REFOUT will be three-stated.
相關PDF資料 |
PDF描述 |
|---|---|
| W455F05 | 4 Mbit Uniform Sector, Serial Flash Memory |
| W455F10 | 4 Mbit Uniform Sector, Serial Flash Memory |
| W455F20 | 4 Mbit Uniform Sector, Serial Flash Memory |
| W45B012 | 4 Mbit Uniform Sector, Serial Flash Memory |
| W45B012P | 4 Mbit Uniform Sector, Serial Flash Memory |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W42C32-05 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Spread Spectrum Frequency Timing Generator |
| W42C32-05MG | 制造商:Cypress Semiconductor 功能描述:PREMIS EMI REDUCTION SSCGS |
| W42C32-05MGT | 制造商:Cypress Semiconductor 功能描述:DRIVER-CLOCK DRIVER |
| W42C70-01G | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:IC-SM-ZERO DELAY BUFFER |
| W42WUM/EGW | 制造商:Kingbright Corporation 功能描述:LED Bi-Color Green/Red 565nm/627nm 2-Pin |
發布緊急采購，3分鐘左右您將得到回復。