參數(shù)資料
型號(hào): PT7C4302WEX
廠商: Pericom
文件頁(yè)數(shù): 6/13頁(yè)
文件大小: 0K
描述: IC RTC NVSRAM 8SOIC
標(biāo)準(zhǔn)包裝: 1
類型: 時(shí)鐘/日歷
特點(diǎn): 閏年,NVSRAM,方波輸出,涓流充電器
存儲(chǔ)容量: 31B
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: 3 線串口
電源電壓: 1.2 V ~ 5.5 V
電壓 - 電源,電池: 1.5 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(yīng)商設(shè)備封裝: 8-SOIC
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: 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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