CY2291I View Datasheet(PDF) - Cypress Semiconductor
Part Name
Description
MFG CO.
CY2291I Datasheet PDF : 14 Pages
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CY2291
Maximum Ratings
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Supply Voltage ............................................... –0.5V to +7.0V
DC Input Voltage............................................ –0.5V to +7.0V
Storage Temperature ................................. –65°C to +150°C
Operating Conditions[5]
Max. Soldering Temperature (10 sec) ..........................260°C
Junction Temperature...................................................150°C
Package Power Dissipation...................................... 750 mW
Static Discharge Voltage.............................................>2000V
(per MIL-STD-883, Method 3015)
Parameter
VDD
VDD
VBATT
TA
CLOAD
CLOAD
fREF
tPU
Description
Part Numbers
Supply Voltage, 5.0V operation
All
Supply Voltage, 3.3V operation
All
Battery Backup Voltage
All
Commercial Operating Temperature, Ambient CY2291/CY2291F
Industrial Operating Temperature, Ambient
CY2291I/CY2291FI
Max. Load Capacitance 5.0V Operation
All
Max. Load Capacitance 3.3V Operation
All
External Reference Crystal
All
External Reference Clock[6, 7, 8]
All
Power-up time for all VDD's to reach minimum specified voltage (power
ramps must be monotonic)
Min.
4.5
3.0
2.0
0
−40
10.0
1
0.05
Max.
5.5
3.6
5.5
+70
+85
25
15
25.0
30
50
Unit
V
V
V
°C
°C
pF
pF
MHz
MHz
ms
Electrical Characteristics, Commercial 5.0V
Parameter
Description
Conditions
Min. Typ. Max. Unit
VOH
VOL
VOH–32
HIGH-Level Output Voltage
LOW-Level Output Voltage
32.768-kHz HIGH-Level
Output Voltage
IOH = 4.0 mA
IOL = 4.0 mA
IOH = 0.5 mA
2.4
VBATT
0.5
V
0.4
V
V
VOL–32
VIH
VIL
IIH
IIL
IOZ
IDD
32.768-kHz LOW-Level
Output Voltage
HIGH-Level Input Voltage[9]
LOW-Level Input Voltage[9]
IOL = 0.5 mA
Except crystal pins
Except crystal pins
Input HIGH Current
Input LOW Current
Output Leakage Current
VDD Supply Current[10]
Commercial
VIN = VDD–0.5V
VIN = +0.5V
Three-state outputs
VDD = VDD Max., 5V operation
2.0
<1
<1
75
0.4
V
V
0.8
V
10
µA
10
µA
250 µA
100 mA
IDDS
IBATT
iVnDSDhPuotdwoewrnSMupopdley[1C0u] rrent
VBATT Power Supply
Current
Shutdown active,
excluding VBATT
VBATT = 3.0V
CY2291/CY2291F
10
50
µA
5
15
µA
Notes:
5. Electrical parameters are guaranteed by design with these operating conditions, unless otherwise noted.
6. External input reference clock must have a duty cycle between 40% and 60%, measured at VDD/2.
7. Please refer to application note “Crystal Oscillator Topics” for information on AC-coupling the external input reference clock.
8. The oscillator circuit is optimized for a crystal reference and for external reference clocks up to 20 MHz. For external reference clocks above 20 MHz, it is
recommended that a 150Ω pull-up resistor to VDD be connected to the Xout pin.
9. Xtal inputs have CMOS thresholds.
10. Load = Max., VIN = 0V or VDD, Typical (–104) configuration, CPUCLK = 66 MHz. Other configurations will vary. Power can be approximated by the following
formula (multiply by 0.65 for 3V operation): IDD=10+0.06•(FCPLL+FUPLL+2•FSPLL)+0.27•(FCLKA+FCLKB+FCLKC+FCLKD+FCPUCLK+FCLKF+FXBUF).
Document #: 38-07189 Rev. *A
Page 4 of 14
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