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參數(shù)資料
| 型號(hào)： | CY2039 |
| 英文描述： | Clocks and Buffers |
| 中文描述： | 時(shí)鐘和緩沖器 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大小： | 208K |
| 代理商： | CY2039 |
High Accuracy EPROM Programmable
PLL Die for Crystal Oscillators
CY2037
Cypress Semiconductor Corporation
3901 North First Street
San Jose
CA 95134
408-943-2600
March 9, 2001
2.7
Features
Benefits
EPROM-programmable die for in-package program-
ming of crystal oscillators
High resolution PLL with 12 bit multiplier and 10 bit di-
vider
EPROM-programmable capacitor tuning array with
Shadow register
Twice programmable die (CY2037A and CY2037-2).
Enables quick turnaround of custom oscillators
Lowers inventory costs through stocking of blank parts
Enables synthesis of highly accurate and stable output clock
frequencies with zero or low PPM
Enables fine-tuning of output clock frequency by adjusting
C
Load
of the crystal
Enables reprogramming of programmed part, to correct errors,
and control excess inventory
Enables programming of output frequency after packaging
Lowers cost of oscillator as PLL can be programmed to a high
frequency using a low-frequency, low-cost crystal
Duty cycle centered at 1.4V or V
DD
/2
Provides flexibility to service most TTL or CMOS applications
Services most PC, networking, and consumer applications
Simple 4-wire programming interface
On-chip oscillator runs from 10–30 MHz fundamental
tuned crystal
EPROM-selectable TTL or CMOS duty cycle levels
Operating frequency
—1–133 MHz at 5V
—1–100 MHz at 3.3V
—1–66.6 MHz at 2.7V
Sixteen selectable post-divide options, using either
PLL or reference oscillator output
Programmable PWR_DWN or OE pin (CY2037A and
CY2037-2)
Frequency Select (CY2037-3)
Provides flexibility in output configurations and testing
Enables low-power operation or output enable function
Enables two frequency options for meeting different industry
standards, i.e., PAL/NTSC.
Provides flexibility for system applications, through selectable
instantaneous or synchronous change in outputs
Suitable for most PC, consumer, and networking applications
Programmable asynchronous or synchronous OE and
PWR_DWN modes (CY2037 and CY2037-2)
Low Jitter outputs typically
—< ± 100 ps (pk-pk) at 5V and f>33 MHz
—< ± 125 ps (pk-pk) at 3.3V and f>33 MHz
3.3V or 5V operation
Small Die
Controlled rise and fall times and output slew rate
Lowers inventory cost as same die services both applications
Enables encapsulation in small-size, surface mount packages
Has lower EMI than oscillators
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY2040 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:32 kHz and 24 MHz Clock Generator with Precision 32 kHz Input |
| CY2040-2 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:32 kHz and 24 MHz Clock Generator with Precision 32 kHz Input |
| CY2040-3 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:32 kHz and 24 MHz Clock Generator with Precision 32 kHz Input |
| CY2040WAF | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Clocks and Buffers |
| CY2040ZC-3 | 制造商:Cypress Semiconductor 功能描述: |
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