参数资料
| 型号： | PT7C43390WEX |
| 厂商： | Pericom |
| 文件页数： | 12/23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
2
Data Sheet
PT7C43390
2-Wire Real-time Clock Module
Pin Assignment
Pin Description
Pin no.
Pin
Description
Configuration
1
INT1
Interrupt 1 signal output pin
Depending on the mode set by INT1 register_1 and the status
register, it outputs low or a clock when the time is reached. It is
disabled by rewriting the status register.
Nch open-drain output (no
protective diode on the
side of VDD)
2
XOUT
3
XIN
Crystal oscillator connect pin (32,768 Hz)
(Cd built in, Cg external)
-
4
GND
Negative power supply pin (GND)
-
5
INT2
Interrupt 2 signal output pin
Depending on the mode set by INT1 register_2 and the status
register, it outputs low or clock when time is reached. It is disabled
by rewriting the status register.
Nch open-drain output (no
protective diode on the
side of VDD)
6
SCL
Serial clock input pin
Since signal processing is done on the SCL signal rising/ falling
edge, give great care to the rising/falling time and comply strictly
with the specifications.
CMOS input (no
protective diode on the
side of VDD)
7
SDA
Serial data I/O pin
Normally, it is pulled up to the VDD voltage by a resistor and
connected with another open-drain output or open-collector output
device via a wired-OR connection.
Nch open-drain output (no
protective diode on the
side of VDD)
CMOS input
8
VDD
Positive power supply pin
-
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