參數資料
型號: ADSP-2109
廠商: Analog Devices, Inc.
元件分類: 基準電壓源/電流源
英文描述: Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection
中文描述: 無電容,NMOS管,150mA的低壓差穩(wěn)壓器的反向電流保護
文件頁數: 24/36頁
文件大?。?/td> 333K
代理商: ADSP-2109
ADSP-2104/ADSP-2109
–24–
REV. 0
20 MHz
Parameter
Min
Max
Unit
Timing Requirement:
t
RDD
t
AA
t
RDH
Switching Characteristic:
t
RP
RD Pulse Width
t
CRD
CLKOUT High to RD Low
t
ASR
A0–A13, PMS, DMS, BMS Setup before
RD Low
t
RDA
A0–A13, PMS, DMS, BMS Hold after RD
Deasserted
t
RWR
RD High to RD or WR Low
RD Low to Data Valid
A0–A13, PMS, DMS, BMS to Data Valid
Data Hold from RD High
12
19.5
ns
ns
0
17
7.5
2.5
ns
ns
ns
22.5
3.5
ns
20
ns
Frequency Dependency
(CLKIN
20 MHz)
Parameter
Min
Max
Unit
Timing Requirement:
t
RDD
RD Low to Data Valid
t
AA
A0–A13, PMS, DMS, BMS to Data Valid
t
RDH
Data Hold from RD High
Switching Characteristic:
t
RP
RD Pulse Width
t
CRD
CLKOUT High to RD Low
t
ASR
A0–A13, PMS, DMS, BMS Setup before
RD Low
t
RDA
A0–A13, PMS, DMS, BMS Hold after RD
Deasserted
t
RWR
RD High to RD or WR Low
0.5t
CK
– 13 + w
0.75t
CK
– 18 + w
ns
ns
0
0.5t
CK
– 8 + w
0.25t
CK
– 5
ns
ns
0.25t
CK
+ 10
0.25t
CK
– 10
ns
0.25t
CK
– 9
0.5t
CK
– 5
ns
ns
NOT E
w = wait states
×
t
CK .
TIMNGPARAMETERS (ADSP-2104/ADSP-2109)
ME MORY RE AD
Figure 22. Memory Read
CLKOUT
A0 – A13
D
RD
WR
DMS, PMS
BMS
t
RDH
t
RWR
t
RP
t
ASR
t
CRD
t
AA
t
RDD
t
RDA
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