参数资料
型号: PT7C4302WEX
厂商: Pericom
文件页数: 6/13页
文件大小: 0K
描述: IC RTC NVSRAM 8SOIC
标准包装: 1
类型: 时钟/日历
特点: 闰年,NVSRAM,方波输出,涓流充电器
存储容量: 31B
时间格式: HH:MM:SS(12/24 小时)
数据格式: YY-MM-DD-dd
接口: 3 线串口
电源电压: 1.2 V ~ 5.5 V
电压 - 电源,电池: 1.5 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: PT7C4302WEXDKR
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12-07-0001
PT0225-4
07/04/12
2
PT7C4302
Real-time Clock Module (3-wire Interface)
Function Block
Shift Registers
Address
Decoder
Address
Register
I /O
Interface
(3-wires)
SCLK
I/O
PT7C4302
OSC
X1
X2
C
D
C
G
Time Counter
(Sec,Min,Hour,Day,Date,Month,Year)
31 x 8
RAM
Power Manager
VCC1
VCC2
RST
32.768
kHz
Counter
Chain
Note: CD=CG=11pF
Maximum Ratings
Storage Temperature…………………………………...-65℃ to +150℃
Ambient Temperature with Power Applied......................-40℃ to +85℃
Supply Voltage to Ground Potential (Vcc to GND) ……………..-0.3V to +6.5V
DC Input (All Other Inputs except Vcc & GND)………………..-0.3V to +6.5V
DC Output Voltage (SDA, /INTA, /INTB pins)………………...-0.3V to +6.5V
Power Dissipation ........................................320mW (Depend on package)
Recommended Operating Conditions
Symbol
Description
Min
Type
Max
Unit
VCC1
Backup power voltage
1.5
-
5.5
V
VCC2
Timing data and RAM data maintaining voltage
1.2
-
5.5
Timing data writing voltage
1.5
-
5.5
Timing data reading voltage
1.5
-
5.5
RAM data writing voltage
3.0
-
5.5
RAM data reading voltage
1.5
-
5.5
VIH
Input high level
2
-
VCC+0.3
VIL
Input low level
-0.3
-
0.3
TA
Operating temperature
-40
-
85
C
Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the
device. This is a stress rating only and functional
operation of the device at these or any other
conditions above those indicated in the operational
sections of this specification is not implied.
Exposure to absolute maximum rating conditions
for extended periods may affect reliability.
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