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参数资料
| 型号： | CY2040-2 |
| 厂商： | Cypress Semiconductor Corp. |
| 英文描述： | 32 kHz and 24 MHz Clock Generator with Precision 32 kHz Input |
| 中文描述： | 32 kHz和24兆赫的精密时钟发生器，32 kHz输入 |
| 文件页数： | 2/7页 |
| 文件大小： | 67K |
| 代理商： | CY2040-2 |
CY2040-2/3
Document #: 38-07122 Rev. *A
Page 2 of 7
Pin Description
Pin #
1
2
3
Symbol
NC
32KPLLEN
PD24M#
Type
NC
I, PU
I, PU
Description
No connection (leave it floating).
OUT32KPLL (pin 14) output enable (OE). 1 = running, 0 = 3-state. Weak pull-up.
Power down pin to turn off OUT32M, OUT32KPLL, PLL, post divider and 24-MHz
crystal oscillator. Active Low. 1 = running, 0 = power down. Weak pull-up.
3.3V supply for the 32 kHz oscillator circuit (Vbatt).
3.3V supply for the 24 MHz oscillator and PLL circuits (V
DD
).
Crystal connection input for OSC1.
Recommend using C
Load
= 6 pF crystal with ESR <= 55 k
.
Oscillator output pin connected to crystal OSC1.
No connection (leave it floating).
No connection (leave it floating).
Power supply ground.
Crystal connection input for OSC2. Recommend to use C
Load
= 10pF crystal with
ESR <= 20
. Can be left floating if 24M crystal is not used (CY2040-2).
Oscillator output pin connected to crystal OSC2. Leave this pin unconnected if 24M
crystal is not used (CY2040-2).
3.3V 32 kHz buffered output of the reference crystal.
32 kHz output. Can be enabled/disabled by 32KPLLEN pin.
3.3V 24 MHz buffered output: either 32 kHz
×
750 (-2) or from 24.0 MHz OSC2 (-3).
Power supply ground.
4
5
6
V32K
[1]
V24M
[1]
XIN32K
P
P
I
7
8
9
10
11
XOUT32K
NC
NC
VSS
Xin24M
O
NC
NC
P
I
12
OUT24M
O
13
14
15
16
OUT32K
OUT32KPLL
OUT24M
VSS
O
O
O
P
Device Configuration
Device
Input Crystals
Output Frequency
CY2040-2
32.000 kHz crystal with C
Load
= 6pF and ESR <= 55 k
.
OUT32K = 32.000 kHz; OUT24M = 24.000 MHz,
OUT32KPLL=32.000kHz
CY2040-3
32.768 kHz crystal with C
Load
= 6pF and ESR <= 55 k
.
24.000 MHz crystal with C
Load
= 10pF and ESR <= 20
.
OUT32K = 32.768 kHz; OUT24M = 24.000 MHz,
OUT32KPLL = 32.768 kHz
Note:
1.
The two power supply pins, V32K and V24M, should be shorted externally.
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相关代理商/技术参数 |
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| CY2040-3 | 制造商:CYPRESS 制造商全称:Cypress Semiconductor 功能描述:32 kHz and 24 MHz Clock Generator with Precision 32 kHz Input |
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