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MCP7940NT-E/MSVAO中文資料微芯科技數(shù)據(jù)手冊(cè)PDF規(guī)格書
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廠商型號(hào) |
MCP7940NT-E/MSVAO |
功能描述 | Battery-Backed I2C Real-Time Clock/Calendar with SRAM |
文件大小 |
727.62 Kbytes |
頁面數(shù)量 |
58 頁 |
生產(chǎn)廠商 | Microchip Technology |
企業(yè)簡(jiǎn)稱 |
Microchip【微芯科技】 |
中文名稱 | 微芯科技股份有限公司官網(wǎng) |
原廠標(biāo)識(shí) | ![]() |
數(shù)據(jù)手冊(cè) | |
更新時(shí)間 | 2025-3-2 23:00:00 |
人工找貨 | MCP7940NT-E/MSVAO價(jià)格和庫存,歡迎聯(lián)系客服免費(fèi)人工找貨 |
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General Description
The MCP7940N Real-Time Clock/Calendar (RTCC)
tracks time using internal counters for hours, minutes,
seconds, days, months, years, and day of week.
Alarms can be configured on all counters up to and
including months. For usage and configuration, the
MCP7940N supports I2C communications up to
400 kHz.
The open-drain, multi-functional output can be
configured to assert on an alarm match, to output a
selectable frequency square wave, or as a general
purpose output.
The MCP7940N is designed to operate using a
32.768 kHz tuning fork crystal with external crystal
load capacitors. On-chip digital trimming can be used
to adjust for frequency variance caused by crystal
tolerance and temperature.
SRAM and timekeeping circuitry are powered from the
back-up supply when main power is lost, allowing the
device to maintain accurate time and the SRAM
contents. The times when the device switches over to
the back-up supply and when primary power returns
are both logged by the power-fail time-stamp.
Timekeeping Features
? Real-Time Clock/Calendar (RTCC):
- Hours, Minutes, Seconds, Day of Week, Day,
Month, Year
- Leap year compensated to 2399
- 12/24 hour modes
? Oscillator for 32.768 kHz Crystals:
- Optimized for 6-9 pF crystals
? On-Chip Digital Trimming/Calibration:
- ±1 PPM resolution
- ±129 PPM range
? Dual Programmable Alarms
? Versatile Output Pin:
- Clock output with selectable frequency
- Alarm output
- General purpose output
? Power-Fail Time-Stamp:
- Time logged on switchover to and from Battery mode
Low-Power Features
? Wide Voltage Range:
- Operating voltage range of 1.8V to 5.5V
- Backup voltage range of 1.3V to 5.5V
? Low Typical Timekeeping Current:
- Operating from VCC: 1.2 μA at 3.3V
- Operating from battery backup: 925 nA at 3.0V
? Automatic Switchover to Battery Backup
供應(yīng)商 | 型號(hào) | 品牌 | 批號(hào) | 封裝 | 庫存 | 備注 | 價(jià)格 |
---|---|---|---|---|---|---|---|
Microchip(微芯) |
23+ |
NA/ |
8735 |
原廠直銷,現(xiàn)貨供應(yīng),賬期支持! |
詢價(jià) | ||
MICROCH |
2020+ |
DFN |
80000 |
只做自己庫存,全新原裝進(jìn)口正品假一賠百,可開13%增 |
詢價(jià) | ||
Microchip |
24+ |
8SOIC |
10000 |
全新原廠原裝,進(jìn)口正品現(xiàn)貨,正規(guī)渠道可含稅!! |
詢價(jià) | ||
Microchip |
21+ |
25000 |
原廠原包 深圳現(xiàn)貨 主打品牌 假一賠百 可開票! |
詢價(jià) | |||
MICROCHIP |
24+ |
SOP8 |
3385 |
市場(chǎng)最低 原裝現(xiàn)貨 假一罰百 可開原型號(hào) |
詢價(jià) | ||
MICROCHIP(美國微芯) |
2447 |
SOIC-8 |
31500 |
3300個(gè)/圓盤一級(jí)代理專營品牌!原裝正品,優(yōu)勢(shì)現(xiàn)貨, |
詢價(jià) | ||
Microchip Technology |
22+ |
NA |
500000 |
萬三科技,秉承原裝,購芯無憂 |
詢價(jià) | ||
MICROCHIP TECHNOLOGY |
2022+ |
原廠原包裝 |
8600 |
全新原裝 支持表配單 中國著名電子元器件獨(dú)立分銷 |
詢價(jià) | ||
MICROCHIP/微芯 |
23+ |
N/A |
5000 |
原裝分貨 強(qiáng)勢(shì)渠道 |
詢價(jià) | ||
MicrochipTechnology |
24+ |
原廠原裝 |
6000 |
進(jìn)口原裝正品假一賠十,貨期7-10天 |
詢價(jià) |