CY2291
4
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
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)
Operating Conditions[5]
Parameter
Description
Part Numbers
Min.
Max.
Unit
VDD
Supply Voltage, 5.0V operation
All
4.5
5.5
V
VDD
Supply Voltage, 3.3V operation
All
3.0
3.6
V
VBATT
Battery Backup Voltage
All
2.0
5.5
V
TA
Commercial Operating Temperature, Ambient
CY2291/CY2291F
0
+70
°C
Industrial Operating Temperature, Ambient
CY2291I/CY2291FI
−40
+85
°C
CLOAD
Max. Load Capacitance 5.0V Operation
All
25
pF
CLOAD
Max. Load Capacitance 3.3V Operation
All
15
pF
fREF
External Reference Crystal
All
10.0
25.0
MHz
External Reference Clock[6, 7, 8]
All
1
30
MHz
Electrical Characteristics, Commercial 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]
Commercial
VDD = VDD Max., 5V operation
75
100
mA
IDDS
VDD Power Supply Current
in Shutdown Mode[10]
Shutdown active,
excluding VBATT
CY2291/CY2291F
10
50
µA
IBATT
VBATT Power Supply
Current
VBATT = 3.0V
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 150
Ω pull-up resistor to V
DD 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).
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
