參數(shù)資料
型號: MB91F725RPMC-GSE1
廠商: FUJITSU LTD
元件分類: 微控制器/微處理器
英文描述: RISC MICROCONTROLLER, PQFP144
封裝: 20 X 20 MM, 1.70 MM HEIGHT, 0.50 MM PITCH, LEAD FREE, PLASTIC, LQFP-144
文件頁數(shù): 11/120頁
文件大?。?/td> 4549K
代理商: MB91F725RPMC-GSE1
MB91725 Series
108
DS07-16914-1E
(12) External bus I/F (Asynchronous mode) timing (target value)
(TA : Recommended operating conditions, VCC
= AVCC = 5.0 V±10%, VSS = AVSS = 0.0 V)
(external load capacitance 50 pF)
* : If the bus is expanded by automatic wait insertion or RDY input, add time (tcyc
× the number of expanded cycles)
to the rated value.
Parameter
Symbol
Pin name
Condi-
tions
Value
Unit
Remarks
Min
Max
Cycle time
tCYC
SYSCLK
31.25
ns
Address setup
→ RDX ↑ time
tASRH
RDX
A00 to A21
2
× tCYC -
12
2
× tCYC +
12
ns
RWT=1,
set RWT to 1 or more.*
RDX
↑ →
Address hold
tRHAH
tCYC - 12
tCYC
+ 12
ns
Set RDCS to 1 or more.
Data setup
→ RDX ↑ time
tDSRH
RDX
D16 to D31
18
+ tCYC
ns
RWT=1,
set RWT to 1 or more.
RDX
↑ →
data hold
tRHDH
0
ns
Address setup
→ WRnX ↑
time
tASWH
WR0X,
WR1X
A00 to A21
tCYC - 12
tCYC
+ 12
ns
WWT
= 0*
WRnX
↑ →
Address hold
tWHAH
tCYC - 12
tCYC
+ 12
ns
Set WRCS to 1 or more.
Data setup
→ WRnX ↑
time
tDSWH
WR0X,
WR1X
D16 to D31
tCYC - 16
tCYC
+ 16
ns
WWT
= 0*
WRnX
↑ →
Data hold
tWHDH
tCYC - 16
tCYC
+ 16
ns
Set WRCS to 1 or more.
Address setup
→ ASX ↑ time
tMASASH
ASX
D16 to D31
tCYC - 16
tCYC
+ 16
ns
ASCY
= 0
ASX
↑ →
Address hold
tMASHAH
tCYC - 16
tCYC
+ 16
ns
In multiplex mode, set as
follows:
Set CSWR and
CSRD to 2 or more.
ASCY must satisfy
the following condi-
tions because of set-
ting ADCY>ASCY
and protocol violation
prevention.
ADCY
+ 1 ≤ ACS + CSRD
ADCY
+ 1 ≤ ACS + CSWR
ASCY
+ 1 ≤ ACS + CSRD
ASCY
+ 1 ≤ ACS + CSWR
Refer to Hardware Manual
for details.
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