參數(shù)資料
型號: DS80C390-QNR
廠商: DALLAS SEMICONDUCTOR
元件分類: Microcontroller
英文描述: 8-BIT, 40 MHz, MICROCONTROLLER, PQCC68
封裝: PLASTIC, LCC-68
文件頁數(shù): 29/58頁
文件大小: 5486K
代理商: DS80C390-QNR
DS80C390
35 of 58
110199
MULTIPLEXED EXTERNAL PROGRAM MEMORY READ CYCLE
MOVX CHARACTERISTICS (Multiplexed address/data bus)
PARAMETER
SYMBOL
MIN
MAX
UNITS STRETCH
VALUES
CST (MD2:0)
tLHLL2
0.375 tMCS -5
ns
CST = 0
0.5 tMCS -5
1
≤ C
ST
≤ 3
MOVX ALE Pulse Width
1.5 tMCS -10
ns
4
≤ C
ST
≤ 7
tAVLL2
0.125 tMCS -5
ns
CST = 0
0.25tMCS -5
1
≤ C
ST
≤ 3
Port 0 MOVX Address,
4
CE0
,
4
PCE0
Valid to
ALE Low
1.25 tMCS -10
4
≤ C
ST
≤ 7
tLLAX2
0.125 tMCS -5
ns
0
≤ C
ST
≤3
Address Hold after MOVX
Read/Write
1.125 tMCS -5
ns
4
≤ C
ST
≤ 7
RD
Pulse Width
tRLRH
0.5 tMCS -5
ns
CST =0
CST
t
MCS -10
1
≤ C
ST
≤ 7
WR
Pulse Width
tWLWH
0.5 tMCS -5
ns
CST =0
CST
t
MCS -10
1
≤ C
ST
≤ 7
RD
Low to Valid Data In
tRLDV
0.5 tMCS -20
ns
CST =0
CST
t
MCS -20
1
≤ C
ST
≤ 7
Data Hold after Read
tRHDX
0
ns
Data Float after Read
tRHDZ
0.25 tMCS -5
ns
CST = 0
0.5tMCS -5
1
≤ C
ST
≤ 3
1.5 tMCS -5
4
≤ C
ST
≤ 7
ALE Low to Valid Data In
tLLDV
0.625 tMCS -20
ns
CST = 0
(CST+0.25)
t
MCS -40
1
≤ C
ST
≤ 3
(CST+1.25)
t
MCS -40
4
≤ C
ST
≤ 7
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