CY2277A
Maximum Ratings
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Junction Temperature............................................... +150qC
Supply Voltage..................................................–0.5 to +7.0V
Input Voltage............................................ –0.5V to VDD + 0.5
Storage Temperature (Non-Condensing)....–65qC to +150qC
Operating Conditions[6]
Package Power Dissipation.............................................. 1W
Static Discharge Voltage............................................ >2000V
(per MIL-STD-883, Method 3015, like VDD pins tied together)
Parameter
AVDD, VDDQ3
VDDCPU
Description
Analog and Digital Supply Voltage
Min.
Max.
Unit
V
3.135
3.465
2.5V CPU Supply Voltage (-1,-1M, -3, -7M)
2.5V CPU Supply Voltage (-12, -12M, -12I)
3.3V CPU Supply Voltage
2.375
2.375
3.135
2.9
2.625
3.465
V
VDDQ2
2.5V IOAPIC Supply Voltage (-1,-1M, -3, -7M)
2.5V IOAPIC Supply Voltage (-12, -12M, -12I)
3.3V IOAPIC Supply Voltage
2.375
2.375
3.135
2.9
2.625
3.465
V
TA
TA
CL
Operating Temperature, Commercial
Operating Temperature, Industrial
0
70
85
qC
qC
pF
–40
Max. Capacitive Load on
CPUCLK, USBCLK/IOCLK, REF1, IOAPIC
PCICLK, SDRAM
10
30, 20
20
20
30
45
REF0
f(REF)
tPU
Reference Frequency, Oscillator Nominal Value
14.318
14.318
MHz
ms
Power-up time for all VDD's to reach minimum specified voltage (power
ramps must be monotonic)
0.05
50
Electrical Characteristics (-1, -3, -12)
Parameter
VIH
Description
Test Conditions
Min. Max. Unit
High-level Input Voltage
Low-level Input Voltage
Low-level Input Voltage
High-level Output Voltage[7] VDDQ2 = VDDCPU = 2.375V
Low-level Output Voltage[7] VDDQ2 = VDDCPU = 2.375V
High-level Output Voltage[7] VDDQ3, AVDD, VDDCPU = 3.135V
Except Crystal Inputs
Except Crystal Inputs
SMBus inputs only
2.0
V
V
V
V
VIL
0.8
0.7
VILiic
VOH
IOH = 18 mA CPUCLK 2.0
OH = 18 mA IOAPIC
I
VOL
IOL = 29 mA CPUCLK
IOL = 29 mA IOAPIC
0.4
V
V
VOH
IOH = 32 mA CPUCLK 2.4
I
OH = 36 mA SDRAM
IOH = 32 mA PCICLK
I
I
OH = 26 mA USBCLK
OH = 26 mA IOCLK
IOH = 36 mA REF0
OH = 26 mA REF1
I
VOL
Low-level Output Voltage[7] VDDQ3, AVDD, VDDCPU = 3.135V
IOL = 24 mA CPUCLK
IOL = 29 mA SDRAM
0.4V
V
I
I
I
OL = 26 mA PCICLK
OL = 21 mA USBCLK
OL = 21 mA IOCLK
IOL = 29 mA REF0
OL = 21 mA REF1
I
Rev 1.0,November 25, 2006
Page 6 of 18
SPECTRALINEAR [ SPECTRALINEAR INC ]
