參數(shù)資料
型號(hào)： MCP7940MT-I/MNY
廠商： Microchip Technology
文件頁(yè)數(shù)： 16/19頁(yè)
文件大小： 0K
描述： IC RTCC I2C 64B SRAM 8-TDFN
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-WFDFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 8-TDFN（2x3）
包裝： 帶卷 (TR)
其它名稱： MCP7940MT-I/MNY-ND
MCP7940MT-I/MNYTR
MCP7940M
DS22292A-page 6
Preliminary
2012 Microchip Technology Inc.
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
PIN DESCRIPTIONS
FIGURE 2-1:
DEVICE PINOUTS
2.1
Serial Data (SDA)
This is a bidirectional pin used to transfer addresses
and data into and out of the device. It is an open-drain
terminal, therefore, the SDA bus requires a pull-up
resistor to VCC (typically 10 k
for 100 kHz, 2 k for
400 kHz). For normal data transfer, SDA is allowed to
change only during SCL low. Changes during SCL high
are reserved for indicating the Start and Stop
conditions.
2.2
Serial Clock (SCL)
This input is used to synchronize the data transfer from
and to the device.
2.3
X1, X2
External Crystal Pins.
2.4
MFP
Open-drain pin used for alarm and clock-out.
Pin Name
Pin Function
VSS
Ground
SDA
Bidirectional Serial Data
SCL
Serial Clock
X1
Xtal Input, External Oscillator Input
X2
Xtal Output
NC
Not Connected
MFP
Multi-Function Pin
VCC
+1.8V to +5.5V Power Supply
X1
X2
NC
VSS
VCC
MFP
SCL
SDA
1
2
3
4
8
7
6
5
SOIC/DFN/MSOP/TSSOP
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