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參數(shù)資料
| 型號(hào)： | PT7C43390WEX |
| 廠商： | Pericom |
| 文件頁(yè)數(shù)： | 12/23頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC REAL TIME CLOCK 8SOIC |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類(lèi)型： | 時(shí)鐘/日歷 |
| 特點(diǎn)： | 警報(bào)器，閏年，方波輸出 |
| 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： | 1.3 V ~ 5.5 V |
| 電壓 - 電源，電池： | 1.1 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類(lèi)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-SOIC |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱(chēng)： | 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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