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參數(shù)資料
型號: MCP79400T-I/SN
廠商: Microchip Technology
文件頁數(shù): 10/15頁
文件大小: 0K
描述: IC RTCC 64B SRAM GP I2C 8SOIC
標準包裝: 3,300
類型: 時鐘/日歷
特點: 警報器,閏年,方波輸出,SRAM,唯一 ID
存儲容量: 64B
時間格式: HH:MM:SS(12/24 小時)
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
電壓 - 電源,電池: 1.3 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)
供應商設備封裝: 8-SOICN
包裝: 帶卷 (TR)
MCP7940X
DS25009C-page 4
2011 Microchip Technology Inc.
TABLE 1-2:
AC CHARACTERISTICS
Electrical Characteristics:
Industrial (I):
VCC = +1.8V to 5.5V
TA = -40°C to +85°C
Param.
No.
Symbol
Characteristic
Min.
Max.
Units
Conditions
1FCLK
Clock frequency
100
400
kHz
1.8V
VCC < 2.5V
2.5V
VCC 5.5V
2THIGH
Clock high time
4000
600
ns
1.8V
VCC < 2.5V
2.5V
VCC 5.5V
3TLOW
Clock low time
4700
1300
ns
1.8V
VCC < 2.5V
2.5V
VCC 5.5V
4TR
SDA and SCL rise time
1000
300
ns
1.8V
VCC < 2.5V
2.5V
VCC 5.5V
5TF
SDA and SCL fall time
1000
300
ns
1.8V
VCC < 2.5V
2.5V
VCC 5.5V
6THD:STA Start condition hold time
4000
600
ns
1.8V
VCC < 2.5V
2.5V
VCC 5.5V
7TSU:STA
Start condition setup time
4700
600
ns
1.8V
VCC < 2.5V
2.5V
VCC 5.5V
8THD:DAT Data input hold time
0
ns
9TSU:DAT Data input setup time
250
100
ns
1.8V
VCC < 2.5V
2.5V
VCC 5.5V
10
TSU:STO Stop condition setup time
4000
600
ns
1.8V
VCC < 2.5V
2.5V
VCC 5.5V
11
TAA
Output valid from clock
3500
900
ns
1.8V
VCC < 2.5V
2.5V
VCC 5.5V
12
TBUF
Bus free time: Time the bus
must be free before a new
transmission can start
4700
1300
ns
1.8V
VCC < 2.5V
2.5V
VCC 5.5V
13
TSP
Input filter spike suppression
(SDA and SCL pins)
—50
ns
14
TWC
Write cycle time (byte or
page)
—5
ms
15
Endurance
1M
cycles 25°C, VCC = 5.5V Page mode
Note 1: Not 100% tested.
2: The combined TSP and VHYS specifications are due to new Schmitt Trigger inputs, which provide improved
noise spike suppression. This eliminates the need for a TI specification for standard operation.
3: This parameter is not tested but ensured by characterization. For endurance estimates in a specific
application, please consult the Total Endurance Model which can be obtained from Microchip’s web site
at www.microchip.com.
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