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CY28378
...................... Document #: 38-07519 Rev. ** Page 15 of 21
IDDPD3
3.3V Shutdown Current
VDD_CORE/VDDQ3 = 3.465V
25
mA
AC Electrical Specifications[2]
Parameter
Output
Description
Test Conditions
Min.
Max.
Unit
t1
All
Output Duty Cycle[3]
t1A/(t1B)
45
55
%
t2
CPUT/C
Rise Time
Measured at 20% to 80% of Voh
175
800
ps
t2
48MHz, REF
Rising Edge Rate
Between 0.4V and 2.4V
0.5
2.0
V/ns
t2
PCI, 3V66,
Rising Edge Rate
Between 0.4V and 2.4V
1.0
4.0
V/ns
t3
CPUT/C
Fall Time
Measured at 80% to 20% of Voh
175
800
ps
t3
48MHz, REF
Falling Edge Rate
Between 2.4V and 0.4V
0.5
2.0
V/ns
t3
PCI, 3V66
Falling Edge Rate
Between 2.4V and 0.4V
0.7
4.0
V/ns
t4
CPUT/C
CPU-CPU Skew
Measured at Crossover
150
ps
t5
3V66 [0:1]
3V66-3V66 Skew
Measured at 1.5V
500
ps
t6
PCI
PCI-PCI Skew
Measured at 1.5V
500
ps
t7
3V66,PCI
3V66-PCI Clock Skew
3V66 leads. Measured at 1.5V
1.0
4.5
ns
t8
CPUT/C
Cycle-Cycle Clock Jitter
Measured at Crossover t8 = t8A – t8B
with all outputs running
600
ps
t9
3V66
Cycle-Cycle Clock Jitter
Measured at 1.5V t9 = t9A – t9B
600
ps
t9
48MHz
Cycle-Cycle Clock Jitter
Measured at 1.5V t9 = t9A – t9B
600
ps
t9
PCI
Cycle-Cycle Clock Jitter
Measured at 1.5V t9 = t9A – t9B
600
ps
t9
REF
Cycle-Cycle Clock Jitter
Measured at 1.5V t9 = t9A – t9B
1000
ps
CPUT/C, PCI
Settle Time
CPU and PCI clock stabilization from
power-up
3
ms
tRFM
CPUT/C
Rise/Fall Matching
Measured with test loads[4, 5]
30
VOVS
CPUT/C
Overshoot
Measured with test loads[5]
Voh + 0.2
V
VUDS
CPUT/C
Undershoot
Measured with test loads[5]
–0.2
V
VOH
CPUT/C
High-level Output Voltage Measured with test loads[5]
0.65
0.74
V
VOL
CPUT/C
Low-level Output Voltage
Measured with test loads[5]
0.0
0.05
V
VOX
CPUT/C
Crossover Voltage
Measured with test loads[5]
250
550
mv
Notes:
2. All parameters specified with loaded outputs.
3. Duty cycle is measured at 1.5V when VDD = 3.3V. When VDD = 2.5V, duty cycle is measured at 1.25V.
4. Determined as a fraction of 2*(Trp – Trn)/(Trp +Trn) Where Trp is a rising edge and Trp is an intersecting falling edge.
5. The test load is Rs = 33.2W, Rp = 49.9W in test circuit.
DC Electrical Specifications (continued)
Parameter
Description
Condition
Min.
Max.
Unit
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