CY2291
Document #: 38-07189 Rev. *C Page 5 of 12
Electrical Characteristics, Commercial 3.3V
Parameter Description Conditions Min. Typ. Max. Unit
VOH HIGH-Level Output Voltage IOH = 4.0 mA 2.4 V
VOL LOW-Level Output Voltage IOL = 4.0 mA 0.4 V
VOH–32 32.768-kHz HIGH-Level
Output Voltage IOH = 0.5 mA VBATT
0.5 V
VOL–32 32.768-kHz LOW-Level
Output Voltage IOL = 0.5 mA 0.4 V
VIH HIGH-Level Input Voltage[9] Except crystal pins 2.0 V
VIL LOW-Level Input Voltage[9] Except crystal pins 0.8 V
IIH Input HIGH Current VIN = VDD–0.5V <1 10 μA
IIL Input LOW Current VIN = +0.5V <1 10 μA
IOZ Output Leakage Current Three-state outputs 250 μA
IDD VDD Supply Current[10]
Commercial VDD = VDD Max., 3.3V operation 50 65 mA
IDDS VDD Power Supply Current
in Shutdown Mode[10] Shutdown active,
excluding VBATT
CY2291/CY2291F 10 50 μA
IBATT VBATT Power Supply CurrentVBATT = 3.0V 5 15 μA
Electrical Characteristics, Industrial 5.0V
Parameter Description Conditions Min. Typ. Max. Unit
VOH HIGH-Level Output Voltage IOH = 4.0 mA 2.4 V
VOL LOW-Level Output Voltage IOL = 4.0 mA 0.4 V
VOH–32 32.768-kHz HIGH-Level
Output Voltage IOH = 0.5 mA VBATT
0.5 V
VOL–32 32.768-kHz LOW-Level
Output Voltage IOL = 0.5 mA 0.4 V
VIH HIGH-Level Input Voltage[9] Except crystal pins 2.0 V
VIL LOW-Level Input Voltage[9] Except crystal pins 0.8 V
IIH Input HIGH Current VIN = VDD–0.5V < 1 10 μA
IIL Input LOW Current VIN = +0.5V < 1 10 μA
IOZ Output Leakage Current Three-state outputs 250 μA
IDD VDD Supply Current[10]
Industrial VDD = VDD Max., 5V operation 75 110 mA
IDDS VDD Power Supply Current
in Shutdown Mode[10] Shutdown active,
excluding VBATT
CY2291I/CY2291FI 10 100 μA
IBATT VBATT Power Supply CurrentVBATT = 3.0V 5 15 μA
Electrical Characteristics, Industrial 3.3V
Parameter Description Conditions Min. Typ. Max. Unit
VOH HIGH-Level Output Voltage IOH = 4.0 mA 2.4 V
VOL LOW-Level Output Voltage IOL = 4.0 mA 0.4 V
VOH–32 32.768-kHz HIGH-Level
Output Voltage IOH = 0.5 mA VBATT
0.5 V
VOL–32 32.768-kHz LOW-Level
Output Voltage IOL = 0.5 mA 0.4 V
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