參數(shù)資料
型號(hào)： MCP7940MT-I/SN
廠商： Microchip Technology
文件頁(yè)數(shù)： 1/19頁(yè)
文件大?。?/td> 0K
描述： IC RTCC I2C 64B SRAM 8-SOIC
標(biāo)準(zhǔn)包裝： 3,300
類型： 時(shí)鐘/日歷
特點(diǎn)： 警報(bào)器，閏年，方波輸出，SRAM
存儲(chǔ)容量： 64B
時(shí)間格式： HH:MM:SS（12/24 小時(shí)）
數(shù)據(jù)格式： YY-MM-DD-dd
接口： I²C，2 線串口
電源電壓： 1.8 V ~ 5.5 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 8-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 8-SOICN
包裝： 帶卷 (TR)
2012 Microchip Technology Inc.
Preliminary
DS22292A-page 1
MCP7940M
Device Selection Table
Features:
Real-Time Clock/Calendar (RTCC):
- 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
Low-Power CMOS Technology:
- Dynamic Current: 400
A max write
100 kHz and 400 kHz Compatibility
ESD Protection >4,000V
Packages include 8-Lead SOIC, TSSOP, 2x3
TDFN, MSOP and PDIP
Pb-Free and RoHS Compliant
Temperature Ranges:
- Industrial (I): -40°C to +85°C
Description:
The MCP7940M series of low-power Real-Time Clocks
(RTC) uses digital timing compensation for an accurate
clock/calendar and a programmable output control for
versatility. Using a low-cost 32.768 kHz crystal, it tracks
time
using
several
internal
registers.
For
communication, the MCP7940M 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 RTC series of devices are available in the standard
8-lead SOIC, TSSOP, MSOP, PDIP and 2x3 TDFN
packages.
Package Types
Part Number
SRAM
(Bytes)
MCP7940M
64
X1
X2
NC
VSS
1
2
3
4
8
7
6
5
VCC
MFP
SCL
SDA
PDIP
X1
X2
NC
VSS
VCC
MFP
SCL
SDA
1
2
3
4
8
7
6
5
MSOP
SOIC, TSSOP
X1
X2
NC
VSS
1
2
3
4
8
7
6
5
VCC
MFP
SCL
SDA
TDFN
X1
X2
NC
VSS
MFP
SCL
SDA
VCC
8
7
6
5
1
2
3
4
Low-Cost I2C Real-Time Clock/Calendar with SRAM
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MCP7940N_13 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Low-Cost I2Ca?￠ Real-Time Clock/Calendar with SRAM and Battery Switchover
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