PT7C4302 PERICOM [Pericom Semiconductor Corporation], PT7C4302 Datasheet - Page 12

• Manufacturer Part Number: PT7C4302
• Description: Real-time Clock Module (3-wire Interface)
• Manufacturer: PERICOM [Pericom Semiconductor Corporation]

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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).
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. VCC = VCC2, when VCC2 > VCC1 + 0.2V; VCC = VCC1, when VCC1 > VCC2.
6. VCC2 = 0V.
7. VCC1 = 0V.
8. Typical values are at 25°C.
PT0225(11/05)
Sym
V
V
V
V
V
V
V
V
I
I
I
I
R1
R2
R3
OZ
IL
CC
CC1
CC2
IH1
IH2
OH
TD
IL1
IL2
OL
Supply 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
Item
V
V
V
SCL, /RST
SCL, /RST
X1
X1
I/O
I/O
/RST, SCLK
I/O
-
-
-
-
A
CC1
CC1
CC2
= 25 °C, Oscillation frequency = 32.768kHz.
, V
Pin
CC2
CC
= 5V; SCLK = 500kHz, V
Note 5
OSC on, Note 2,6
OSC on, Note 1,6
OSC off, Note 4,6,8
OSC on, Note 2,7
OSC on, Note 1,7
OSC off, Note 4,7
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
: 5V
: 2V
: 5V
: 2V
: 5V
: 2V
: 5V
: 2V
12
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
2.0
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
0.4
1.2
81
25
80
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Ver: 0
Unit
mA
mA
µA
µA
µA
µA
µA
nA
kΩ
V
V
V
V
V
V
V
V