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CY2291
Document #: 38-07189 Rev. *C Page 5 of 12
Electrical Characteristics, Commercial 3.3V
Parameter Description Conditions Min. Typ. Max. Unit
V
OH
HIGH-Level Output Voltage I
OH
= 4.0 mA 2.4 V
V
OL
LOW-Level Output Voltage I
OL
= 4.0 mA 0.4 V
V
OH–32
32.768-kHz HIGH-Level
Output Voltage
I
OH
= 0.5 mA V
BATT
0.5
V
V
OL–32
32.768-kHz LOW-Level
Output Voltage
I
OL
= 0.5 mA 0.4 V
V
IH
HIGH-Level Input Voltage
[9]
Except crystal pins 2.0 V
V
IL
LOW-Level Input Voltage
[9]
Except crystal pins 0.8 V
I
IH
Input HIGH Current V
IN
= V
DD
–0.5V <1 10 μA
I
IL
Input LOW Current V
IN
= +0.5V <1 10 μA
I
OZ
Output Leakage Current Three-state outputs 250 μA
I
DD
V
DD
Supply Current
[10]
Commercial
V
DD
= V
DD
Max., 3.3V operation 50 65 mA
I
DDS
V
DD
Power Supply Current
in Shutdown Mode
[10]
Shutdown active,
excluding V
BATT
CY2291/CY2291F 10 50 μA
I
BATT
V
BATT
Power Supply Current V
BATT
= 3.0V 5 15 μA
Electrical Characteristics, Industrial 5.0V
Parameter Description Conditions Min. Typ. Max. Unit
V
OH
HIGH-Level Output Voltage I
OH
= 4.0 mA 2.4 V
V
OL
LOW-Level Output Voltage I
OL
= 4.0 mA 0.4 V
V
OH–32
32.768-kHz HIGH-Level
Output Voltage
I
OH
= 0.5 mA V
BATT
0.5
V
V
OL–32
32.768-kHz LOW-Level
Output Voltage
I
OL
= 0.5 mA 0.4 V
V
IH
HIGH-Level Input Voltage
[9]
Except crystal pins 2.0 V
V
IL
LOW-Level Input Voltage
[9]
Except crystal pins 0.8 V
I
IH
Input HIGH Current V
IN
= V
DD
–0.5V < 1 10 μA
I
IL
Input LOW Current V
IN
= +0.5V < 1 10 μA
I
OZ
Output Leakage Current Three-state outputs 250 μA
I
DD
V
DD
Supply Current
[10]
Industrial
V
DD
= V
DD
Max., 5V operation 75 110 mA
I
DDS
V
DD
Power Supply Current
in Shutdown Mode
[10]
Shutdown active,
excluding V
BATT
CY2291I/CY2291FI 10 100 μA
I
BATT
V
BATT
Power Supply Current V
BATT
= 3.0V 5 15 μA
Electrical Characteristics, Industrial 3.3V
Parameter Description Conditions Min. Typ. Max. Unit
V
OH
HIGH-Level Output Voltage I
OH
= 4.0 mA 2.4 V
V
OL
LOW-Level Output Voltage I
OL
= 4.0 mA 0.4 V
V
OH–32
32.768-kHz HIGH-Level
Output Voltage
I
OH
= 0.5 mA V
BATT
0.5
V
V
OL–32
32.768-kHz LOW-Level
Output Voltage
I
OL
= 0.5 mA 0.4 V
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