首页>MCP7940N-I/SN>规格书详情
MCP7940N-I/SN集成电路(IC)实时时钟规格书PDF中文资料
厂商型号 |
MCP7940N-I/SN |
参数属性 | MCP7940N-I/SN 封装/外壳为8-SOIC(0.154",3.90mm 宽);包装为管件;类别为集成电路(IC) > 实时时钟;产品描述:IC RTC CLK/CALENDAR I2C 8-SOIC |
功能描述 | Battery-Backed I2C Real-Time Clock/Calendar with SRAM |
文件大小 |
727.62 Kbytes |
页面数量 |
58 页 |
生产厂商 | Microchip Technology Inc. |
企业简称 |
Microchip【微芯科技】 |
中文名称 | 微芯科技股份有限公司官网 |
原厂标识 | |
数据手册 | |
更新时间 | 2024-4-30 12:32:00 |
MCP7940N-I/SN规格书详情
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
MCP7940N-I/SN属于集成电路(IC) > 实时时钟。微芯科技股份有限公司制造生产的MCP7940N-I/SN实时时钟实时时钟 (RTC) 为几乎所有需要保持精确时间的电子设备提供时间和/或日期信息。时钟类型有二进制计数器、时钟/日历/监控器、历时计时器、幻时钟芯片、便携式系统控制器、温度记录器、时间事件记录器和计时器时钟外设。其包含 2 B 至 2 MB 不等的存储器,接口选项有 I2C、并行、串行、SPI、1 线式、2 线式、3 线式和 4 线式。
产品属性
- 产品编号:
MCP7940N-I/SN
- 制造商:
Microchip Technology
- 类别:
集成电路(IC) > 实时时钟
- 系列:
Automotive, AEC-Q100
- 包装:
管件
- 类型:
时钟/日历
- 特性:
警报器,闰年,方波输出,SRAM
- 存储容量:
64B
- 时间格式:
HH:MM:SS(12/24 小时)
- 日期格式:
YY-MM-DD-dd
- 接口:
I²C,2 线串口
- 电压 - 供电:
1.8V ~ 5.5V
- 电压 - 供电,电池:
1.3V ~ 5.5V
- 电流 - 计时(最大值):
1.2µA @ 3.3V
- 工作温度:
-40°C ~ 85°C
- 安装类型:
表面贴装型
- 封装/外壳:
8-SOIC(0.154",3.90mm 宽)
- 供应商器件封装:
8-SOIC
- 描述:
IC RTC CLK/CALENDAR I2C 8-SOIC
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
MICRO |
14+ |
SOP |
16000 |
询价 | |||
MICROCHIP |
21+ |
SOP8 |
10000 |
全新原装现货 |
询价 | ||
Microchip/Microchip Technology |
21+ |
SOP8 |
6366 |
优势代理渠道,原装正品,可全系列订货开增值税票 |
询价 | ||
MICROCHIP |
22+ |
SOP8 |
8600 |
全新正品现货 有挂就有现货 |
询价 | ||
MICROCHIP |
23+ |
SOP-8 |
26320 |
一级分销商 |
询价 | ||
MICROCHIP(美国微芯) |
2021+ |
SOIC-8 |
499 |
询价 | |||
MICROCHIP |
20+ |
SOIC-8 |
4520 |
原装正品现货 |
询价 | ||
MICROCH |
23+ |
SOP8 |
8560 |
受权代理!全新原装现货特价热卖! |
询价 | ||
MICROCHIP/微芯 |
23+ |
SOP-8 |
50000 |
只做原装正品 |
询价 | ||
MICROCHIP |
23/22+ |
NA |
10000 |
代理渠道.实单必成 |
询价 |