PT7C4302WEX Pericom Semiconductor, PT7C4302WEX Datasheet - Page 13

• Manufacturer Part Number: PT7C4302WEX
• Description: IC REAL TIME CLK/CALENDAR 8-SOIC
• Manufacturer: Pericom Semiconductor
• Type: Clock/Calendarr

Specifications of PT7C4302WEX

• Memory Size: 31B
• Time Format: Binary
• Date Format: Binary
• Interface: 3-Wire Serial
• Voltage - Supply: 1.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PT7C4302WEXTR

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AC Electrical Characteristics
T
Note:
1. Measured at V
2. Measured at V
3. Load capacitance = 50pF.
PT0225(08/09)
Data to CLK Setup
CLK to Data Hold
CLK to Data Delay
CLK Low Time
CLK High Time
CLK Frequency
CLK Rise and Fall
RST to CLK Setup
CLK to RST Hold
RST Inactive Time
RST to I/O High-Z
SCLK to I/O High-Z
A
Figure 6 a Timing diagram: Read data transfer
= -40 °C to +85 °C. Unless otherwise specified.
Parameter
IH
OH
= 2.0V or V
= 2.4V or V
t
t
t
t
t
t
t
t
t
t
t
t
DC
CDH
CDD
CL
CH
CLK
R
CC
CCH
CWH
CDZ
CCZ
,t
IL
OL
F
= 0.8V and 10ns maximum rise and fall time.
= 0.4V.
Sym
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
=2.0V
=5.0V
=2.0V
=5.0V
=2.0V
=5.0V
=2.0V
=5.0V
=2.0V
=5.0V
=2.0V
=5.0V
=2.0V
=5.0V
=2.0V
=5.0V
=2.0V
=5.0V
=2.0V
=5.0V
=2.0V
=5.0V
=2.0V
=5.0V
1000
1000
Min
200
280
250
250
240
50
70
60
0
4
1
4
1
-
-
-
-
-
-
-
-
-
13
Real-time Clock Module (3-wire Interface)
Typ
Figure 6 b Timing diagram: Write data transfer
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
2000
Max
800
200
500
280
280
0.5
2.0
70
70
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Unit
kHz
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
1,2,3
1
1
1
1
1
1
1
1
1
1
1
Data Sheet
PT7C4302
Ver: 2