- 您现在的位置：买卖IC网 > PDF目录67987 > MCP7940N-I/SN REAL TIME CLOCK, PDSO8 PDF资料下载
参数资料
| 型号： | MCP7940N-I/SN |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | REAL TIME CLOCK, PDSO8 |
| 封装： | 3.90 MM, ROHS COMPLIANT, PLASTIC, SOIC-8 |
| 文件页数： | 1/36页 |
| 文件大小： | 551K |
| 代理商： | MCP7940N-I/SN |
当前第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页
2011 Microchip Technology Inc.
DS25010A-page 1
MCP7940N
Device Selection Table
Features:
Real-Time Clock/Calendar (RTCC), Battery
Backed:
- Hours, Minutes, Seconds, Day of Week, Day,
Month and Year
- Dual alarm with single output
On-Chip Digital Trimming/Calibration:
- Range -127 to +127 ppm
- Resolution 1 ppm
Programmable Open-Drain Output Control:
- CLKOUT with 4 selectable frequencies
- Alarm output
64 Bytes SRAM, Battery Backed
Automatic VCC Switchover to VBAT Backup
Supply
Power-Fail Time-Stamp for Battery Switchover
Low-Power CMOS Technology:
- Dynamic Current: 400
A max read
- Battery Backup Current: <700nA @ 1.8V
100 kHz and 400 kHz Compatibility
ESD Protection >4,000V
Packages include 8-Lead SOIC, TSSOP, 2x3
TDFN, MSOP
Pb-Free and RoHS Compliant
Temperature Ranges:
- Industrial (I): -40°C to +85°C
Description:
The MCP7940N series of low-power Real-Time Clocks
(RTC) uses digital timing compensation for an accurate
clock/calendar, a programmable output control for
versatility, a power sense circuit that automatically
switches to the backup supply. Using a low-cost 32.768
kHz crystal, it tracks time using several internal regis-
ters. For communication, the MCP7940N uses the
I2C bus.
The clock/calendar automatically adjusts for months
with fewer than 31 days, including corrections for
leap years. The clock operates in either the 24-hour
or 12-hour format with an AM/PM indicator and
settable alarm(s) to the second, minute, hour, day of
the week, date or month. Using the programmable
CLKOUT, frequencies of 32.768, 8.192 and 4.096
kHz and 1 Hz can be generated from the external
crystal.
The device is fully accessible through the serial
interface while VCC is between 1.8V and 5.5V, but can
operate down to 1.3V for timekeeping and SRAM
retention only.
The RTC series of devices are available in the standard
8-lead SOIC, TSSOP, MSOP and 2x3 TDFN packages.
Package Types
Part Number
SRAM
(Bytes)
MCP7940N
64
X1
X2
VBAT
VSS
VCC
MFP
SCL
SDA
1
2
3
4
8
7
6
5
MSOP
SOIC, TSSOP
X1
X2
VBAT
VSS
1
2
3
4
8
7
6
5
VCC
MFP
SCL
SDA
TDFN
X1
X2
VBAT
VSS
MFP
SCL
SDA
VCC
8
7
6
5
1
2
3
4
Low-Cost I
2C Real-Time Clock/Calendar
with SRAM and Battery Switchover
相关PDF资料 |
PDF描述 |
|---|---|
| MCP7940N-I/MS | REAL TIME CLOCK, PDSO8 |
| MCP7940NT-I/ST | REAL TIME CLOCK, PDSO8 |
| MCP7940NT-I/SN | REAL TIME CLOCK, PDSO8 |
| MCP7940NT-I/MS | REAL TIME CLOCK, PDSO8 |
| MCP79411-I/SN | REAL TIME CLOCK, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP7940NT | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Low-Cost I2C? Real-Time Clock/Calendar with SRAM and Battery Switchover |
| MCP7940NT-E/MNY | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Low-Cost I2C Real-Time Clock/Calendar with SRAM and Battery Switchover |
| MCP7940NT-E/MS | 制造商:Microchip Technology Inc 功能描述:I2C GP RTCC, 64B SRAM, EXT - Tape and Reel 制造商:Microchip Technology Inc 功能描述:IC RTCC 64B SRAM GP I2C 8MSOP |
| MCP7940NT-E/SN | 功能描述:实时时钟 I2C GP RTCC 64B SRAM EXT RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| MCP7940NT-E/ST | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Low-Cost I2C Real-Time Clock/Calendar with SRAM and Battery Switchover |
发布紧急采购，3分钟左右您将得到回复。