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参数资料
| 型号： | MCP7940NT-I/MNY |
| 厂商： | Microchip Technology |
| 文件页数： | 1/14页 |
| 文件大小： | 0K |
| 描述： | IC RTCC 64B SRAM GP I2C 8TDFN |
| 标准包装： | 3,300 |
| 类型： | 时钟/日历 |
| 特点： | 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） |
| 数据格式： | YY-MM-DD-dd |
| 接口： | I²C，2 线串口 |
| 电源电压： | 1.8 V ~ 5.5 V |
| 电压 - 电源，电池： | 1.3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN 裸露焊盘 |
| 供应商设备封装： | 8-TDFN（2x3） |
| 包装： | 带卷 (TR) |
2011 Microchip Technology Inc.
DS25010C-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 I2C Real-Time Clock/Calendar
with SRAM and Battery Switchover
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相关代理商/技术参数 |
参数描述 |
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| MCP79410 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:I2C? Real-Time Clock/Calendar with EEPROM, SRAM, Unique ID and Battery Switchover |
| MCP79410_13 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Battery-Backed I2Ca?￠ Real-Time Clock/Calendar with EEPROM and Unique ID |
| MCP79410-I/MNY | 制造商:Microchip Technology Inc 功能描述:I2C GP RTCC, 1KB EE, 64B SRAM, ID - Rail/Tube |
| MCP79410-I/MS | 功能描述:实时时钟 I2C GP RTCC 1Kb EE 64B SRAM ID 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 |
| MCP79410-I/P | 制造商:Microchip Technology Inc 功能描述:I2C GP RTCC, 1KB EE, 64B SRAM, ID - Rail/Tube 制造商:Microchip Technology Inc 功能描述:RTCC 12C 1K EE 64B SRAM 8PDIP |
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