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MCP7940N-ISLASHP規(guī)格書詳情
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 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價格 |
---|---|---|---|---|---|---|---|
Microchip Technology |
24+ |
8-MSOP |
35200 |
一級代理/放心采購 |
詢價 | ||
MICROCHIP/微芯 |
24+ |
N/A |
5000 |
原裝分貨 強勢渠道 |
詢價 | ||
MICROCHIP |
22+23+ |
MSOP8 |
8000 |
新到現(xiàn)貨,只做原裝進口 |
詢價 | ||
MICROCHIP(美國微芯) |
2021+ |
MSOP-8 |
499 |
詢價 | |||
Microchip |
24+ |
MSOP8 |
10000 |
只做原裝 |
詢價 | ||
Microchip |
25+ |
原廠原裝 |
16000 |
原裝優(yōu)勢絕對有貨 |
詢價 | ||
Microchip Technology |
2022+ |
8-MSOP |
38550 |
全新原裝 支持表配單 中國著名電子元器件獨立分銷 |
詢價 | ||
MICROCHIP(美國微芯) |
23+ |
MSOP-8 |
7087 |
原裝現(xiàn)貨,免費送樣,可開原型號稅票。提供技術(shù)支持 |
詢價 | ||
MICROCHIP(美國微芯) |
24+ |
MSOP8 |
7350 |
現(xiàn)貨供應(yīng),當天可交貨!免費送樣,原廠技術(shù)支持!!! |
詢價 | ||
Microchip |
24+ |
原封裝 |
44520 |
鄭重承諾只做原裝進口現(xiàn)貨 |
詢價 |