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參數(shù)資料
| 型號(hào)： | SY87700ALHG TR |
| 廠商： | Micrel Inc |
| 文件頁(yè)數(shù)： | 7/16頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC CLOCK/DATA RECOVERY 32-TQFP |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 系列： | AnyRate® |
| 類(lèi)型： | 時(shí)鐘和數(shù)據(jù)恢復(fù)（CDR），多路復(fù)用器 |
| PLL： | 是 |
| 主要目的： | 以太網(wǎng)，SONET/SDH，ATM 應(yīng)用 |
| 輸入： | PECL |
| 輸出： | PECL |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 1:3 |
| 差分 - 輸入:輸出： | 是/是 |
| 頻率 - 最大： | 208Mbps |
| 電源電壓： | 3.15 V ~ 3.45 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 32-TQFP 裸露焊盤(pán) |
| 供應(yīng)商設(shè)備封裝： | 32-EPAD-TQFP |
| 包裝： | 帶卷 (TR) |
| 其它名稱(chēng)： | SY87700ALHGTR SY87700ALHGTR-ND |
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2011 Microchip Technology Inc.
DS25010C-page 15
MCP7940N
5.2.2
MFP
Pin 7 is a multi-function pin and supports the following
functions:
Use of the OUT bit in the Control register for
single bit I/O
Alarm Outputs – Available in VBAT mode
FOUT mode – driven from a FOSC divider – Not
available in VBAT mode
The internal control logic for the MFP is connected to
the switched internal supply bus, this allows operation
in VBAT mode. The Alarm Output is the only mode that
operates in VBAT mode, other modes are suspended.
5.2.3
VBAT
The MCP7940N features an internal switch that will
power the clock and the SRAM. In the event that the
VCC supply is not available, the voltage applied to the
VBAT pin serves as the backup supply. A low-value
series resistor is recommended between the external
battery and the VBAT pin to limit the current to the
internal switch circuit.
The VBAT trip point is the point at which the internal
switch operates the device from the VBAT supply and
is typically 1.5V (VTRIP specification D12) typical.
When VDD falls below 1.5V the system will continue to
operate the RTCC and SRAM using the VBAT supply.
The following conditions apply:
If the VBAT feature is not being used, the VBAT pin must
be connected to GND. For more information on VBAT
conditions see application note AN1365, “RTCC Best
Practices” (DS01365).
TABLE 5-2:
Supply
Condition
Read/Write
Access
Powered
By
VCC < VTRIP, VCC < VBAT
No
VBAT
VCC > VTRIP, VCC < VBAT
Yes
VCC
VCC > VTRIP, VCC > VBAT
Yes
VCC
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SY87700ALZG | 功能描述:計(jì)時(shí)器和支持產(chǎn)品 3.3V 32Mbps-175Mbps CDR (I Temp, Green/28 pin SOIC/bulk) RoHS:否 制造商:Micrel 類(lèi)型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時(shí)器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| SY87700ALZG TR | 功能描述:計(jì)時(shí)器和支持產(chǎn)品 3.3V 32Mbps-175Mbps CDR (I Temp, Green/28 pin SOIC/T+R) RoHS:否 制造商:Micrel 類(lèi)型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時(shí)器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| SY87700L | 制造商:MICREL 制造商全稱(chēng):Micrel Semiconductor 功能描述:3.3V 32-175Mbps AnyRate CLOCK AND DATA RECOVERY |
| SY87700L_06 | 制造商:MICREL 制造商全稱(chēng):Micrel Semiconductor 功能描述:3.3V 32-175Mbps AnyRate CLOCK AND DATA RECOVERY |
| SY87700LHG | 功能描述:計(jì)時(shí)器和支持產(chǎn)品 3.3V 32Mbps-175Mbps CDR (I Temp, Green/32 pin TQFP/bulk) RoHS:否 制造商:Micrel 類(lèi)型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時(shí)器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
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