PT7C4302WEX Pericom Semiconductor, PT7C4302WEX Datasheet - Page 12

• 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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DC Electrical Characteristics
Unless otherwise specified, GND =0V, T
Note:1. I/O open, /RST set to a logic 0, and /EOSC bit = 0 (oscillator enabled).
PT0225(08/09)
Sym
V
V
V
V
V
V
V
V
V
I
I
I
I
R1
R2
R3
OZ
CC1
CC2
IL
CC1
CC2
IL1
IH1
IL2
IH2
OH
TD
OL
2.I/O pin open, /RST high, SCLK=2MHz at V
3./RST, SCLK, and I/O all have 40kΩ pull-down resistors to ground.
4./RST, I/O, and SCLK open. The /EOSC bit = 1 (oscillator disabled).
5.V
6.V
7.Typical values are at 25°C.
Backup power voltage
Timing data and RAM data
maintaining voltage
Timing data writing voltage
Timing data reading voltage
RAM data writing voltage
RAM data reading voltage
Current consumption
Current consumption
Low-level input voltage
High-level input voltage
Low-level input voltage
High-level input voltage
Low-level output voltage
High-level output voltage
Input leakage current
Output current when OFF
Trickle Charge Diode Voltage
Drop
Trickle charge resistors
CC2
CC1
= 0V.
= 0V.
Item
A
VCC1
VCC2
VCC1
VCC2
SCL, /RST
SCL, /RST
X1
X1
I/O
I/O
/RST,SCLK
I/O
-
-
-
-
= 25 °C, Oscillation frequency = 32.768kHz.
Pin
CC
= 5V; SCLK = 500kHz, V
-
-
-
-
-
-
OSC on, Note 2, 5
OSC on, Note 1, 5
OSC off, Note 4, 5, 7
OSC on, Note 2, 6
OSC on, Note 1, 6
OSC off, Note 4, 6
V
V
V
V
V
V
V
V
I
I
I
I
Note 3
Note 3
-
-
-
-
OH
OH
OH
OH
CC1
CC1
CC1
CC1
CC1
CC1
CC1
CC1
= 1.5mA, V
= 4.0mA, V
= -0.4mA, V
= -1.0mA, V
12
: 5V
: 2V
: 5V
: 2V
: 5V
: 2V
: 5V
: 2V
Real-time Clock Module (3-wire Interface)
Conditions
CC
CC
CC
CC
= 2V
= 5V
= 2V
= 5V
CC
= 2.0V, and /EOSC bit = 0 (oscillator enabled).
V
V
V
V
V
V
V
V
V
V
V
V
CC1
CC1
CC1
CC1
CC1
CC1
CC1
CC1
CC1
CC1
CC1
CC1
: 2V
: 5V
: 2V
: 5V
: 2V
: 5V
: 2V
: 5V
: 2V
: 5V
: 2V
: 5V
Min
2.0
1.4
2.0
1.4
1.5
1.2
1.5
1.5
3.0
1.5
1.6
2.4
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Typ
0.08
0.11
100
100
0.5
1.1
0.6
1.3
0.9
1.9
0.9
1.9
0.9
1.9
4.9
0.7
1
2
4
8
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Data Sheet
PT7C4302
0.425
Max
1.28
25.3
500
500
0.8
0.4
0.8
0.6
0.4
0.4
5.5
5.5
5.5
5.5
5.5
5.5
0.4
1.2
81
25
80
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Ver: 2
Unit
mA
mA
µA
nA
µA
µA
µA
µA
kΩ
V
V
V
V
V
V
V
V
V