参数资料
型号: PT7C43390WEX
厂商: Pericom
文件页数: 13/23页
文件大小: 0K
描述: IC REAL TIME CLOCK 8SOIC
标准包装: 1
类型: 时钟/日历
特点: 警报器,闰年,方波输出
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: 1.3 V ~ 5.5 V
电压 - 电源,电池: 1.1 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-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOIC
包装: 标准包装
其它名称: PT7C43390WEXDKR
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PT0280(08/09)
Ver: 3
20
Data Sheet
PT7C43390
2-Wire Real-time Clock Module
AC Electrical Characteristics
Input pulse voltage
0.1 ×VDD to 0.9 ×VDD
Input pulse rise/fall time
20 ns
Output determination voltage
0.5 ×VDD
Output load
100 pF +pull-up resistor 1 k
Timing Chart
VDD = 1.3 to 5.5 V
VDD = 3.0 to 5.5 V
Parameter
Symbol
Min.
Typ.
Max.
Min.
Typ.
Max.
Unit
SCL clock frequency
fSCL
0
-
100
0
-
400
kHz
SCL clock “L” time
tLOW
4.7
-
1
-
s
SCL clock “H” time
tHIGH
4
-
0.9
-
s
SDA output delay time*1
tPD
-
3.5
-
0.9
s
Start condition setup time
tSU. STA
4.7
-
0.6
-
s
Start condition hold time
tHD. STA
4
-
0.6
-
s
Data input setup time
tSU. DAT
250
-
100
-
ns
Data input hold time
tHD. DAT
0
-
0
-
ns
Stop condition setup time
tSU. STO
4.7
-
s
SCL and SDA rise time
tR
-
1
-
0.3
s
SCL and SDA fall time
tF
-
0.3
-
0.3
s
Bus release time
tBUF
4.7
-
1.3
-
s
Noise suppression time
tI
-
100
-
50
ns
*1. Since the output format of the SDA pin is Nch open-drain output, the SDA output delay time is determined by the values of
the load resistance (RL) and load capacity (CL) outside the IC. Therefore, use this value only as a reference value.
Output Load Citcuit
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