參數(shù)資料
型號: TS68302
廠商: Atmel Corp.
英文描述: Integrated Multiprotocol Processor IMP
中文描述: 集成多協(xié)議處理器進出口
文件頁數(shù): 18/47頁
文件大小: 1149K
代理商: TS68302
18
TS68302
2117A–HIREL–11/02
Figure 10.
DMA Timing Diagram
Note:
1. If AS is negated before DS, the data bus could be three-stated (spec 126) before DS is negated.
2. See Figure 11 and Figure 12.
Table 10.
AC Electrical Specifications - External Master Internal Asynchronous Read/write Cycles
(2)
f = 16.67 MHz
Num.
Symbol
Parameter
Min
Max
Unit
100
t
RWVDSL
R/W valid to DS low
0
ns
101
t
DSLDIV
DS low to data in valid
30
ns
102
t
DKLDH
DTACK low to data in hold time
0
ns
103
t
ASVDSL
AS valid to DS low
0
ns
104
t
DKLDSH
DTACK low to DS high
0
ns
105
t
DSHDKH
DS high to DTACK high
45
ns
106
t
DSIASI
DS inactive to AS inactive
0
ns
107
t
DSHRWH
DS high to R/W high
0
ns
108
t
DSHDZ
DS high to data high impedance
45
ns
108A
t
DSHDH
DS high to data out hold time
0
ns
109
t
DSHDOH
DS high to data in hold time
(1)
0
ns
109A
t
DOVDKL
Data out valid to DTACK low
15
ns
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