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參數(shù)資料
| 型號： | W158HT |
| 廠商： | Silicon Laboratories Inc |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CLOCK CK98 SSCG CK98 56SSOP |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 類型： | * |
| PLL： | 帶旁路 |
| 輸入： | 晶體 |
| 輸出： | 時(shí)鐘 |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 1:24 |
| 差分 - 輸入:輸出： | 無/無 |
| 頻率 - 最大： | 133MHz |
| 除法器/乘法器： | 是/無 |
| 電源電壓： | 2.375 V ~ 3.465 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | * |
| 封裝/外殼： | * |
| 供應(yīng)商設(shè)備封裝： | * |
| 包裝： | * |
W158
... Document #: 38-07164 Rev. *A Page Page 10 of 12 of 12
2.5V AC Electrical Characteristics
TA = 0°C to +70°C, VDDQ3 = 3.3V±5%, VDDQ2= 2.5V±5%
fXTL = 14.31818 MHz
Spread Spectrum function turned off
AC clock parameters are tested and guaranteed over stated operating conditions using the stated lump capacitive load at the
clock output.[38]
Note:
38. Period, Jitter, offset, and skew measured on rising edge at 1.25V.
CPU Clock Outputs, CPU0:3 (Lump Capacitance Test Load = 20 pF)
Parameter
Description
Test Condition/Comments
CPU = 133 MHz
CPU = 100 MHz
Unit
Min.
Typ.
Max.
Min.
Typ.
Max.
tP
Period
Measured on rising edge at 1.25V
7.5
7.65
10
10.2
ns
tH
High Time
Duration of clock cycle above 2.0V
1.87
3.0
ns
tL
Low Time
Duration of clock cycle below 0.4V
1.67
2.8
ns
tR
Output Rise Edge Rate Measured from 0.4V to 2.0V
1
4
1
4
V/ns
tF
Output Fall Edge Rate
Measured from 2.0V to 0.4V
1
4
1
4
V/ns
tD
Duty Cycle
Measured on rising and falling edge at
1.25V
45
55
45
55
%
tJC
Jitter, Cycle-to-Cycle
Measured on rising edge at 1.25V.
Maximum difference of cycle time
between two adjacent cycles.
150
ps
tSK
Output Skew
Measured on rising edge at 1.25V
175
ps
fST
Frequency Stabili-
zation from Power-up
(cold start)
Assumes full supply voltage reached
within 1 ms from power-up. Short cycles
exist prior to frequency stabilization.
33
ms
Zo
AC Output Impedance
Average value during switching
transition. Used for determining series
termination value.
20
CPUdiv2 Clock Outputs, CPUdiv2_0:1 (Lump Capacitance Test Load = 20 pF)
Parameter
Description
Test Condition/Comments
CPU = 133 MHz
CPU = 100 MHz
Unit
Min.
Typ.
Max.
Min.
Typ.
Max.
tP
Period
Measured on rising edge at 1.25V
15
15.3
20
20.4
ns
tH
High Time
Duration of clock cycle above 2.0V
5.25
7.5
ns
tL
Low Time
Duration of clock cycle below 0.4V
5.05
7.3
ns
tR
Output Rise Edge Rate Measured from 0.4V to 2.0V
1
4
1
4
V/ns
tF
Output Fall Edge Rate
Measured from 2.0V to 0.4V
1
4
1
4
V/ns
tD
Duty Cycle
Measured on rising and falling edge at
1.25V
45
55
45
55
%
tJC
Jitter, Cycle-to-Cycle
Measured on rising edge at 1.25V.
Maximum difference of cycle time
between two adjacent cycles.
250
ps
tSK
Output Skew
Measured on rising edge at 1.25V
175
ps
fST
Frequency Stabili-
zation from Power-up
(cold start)
Assumes full supply voltage reached
within 1 ms from power-up. Short cycles
exist prior to frequency stabilization.
33
ms
Zo
AC Output Impedance
Average value during switching
transition. Used for determining series
termination value.
20
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