参数资料
型号: USB-EA-CONVZ
厂商: Analog Devices Inc
文件页数: 3/68页
文件大小: 0K
描述: SUPPORT BOARD ADUC8XX
标准包装: 1
类型: 仿真器
适用于相关产品: ADuC8xx
所含物品: 模块
REV. B
–11–
ADuC824
12.58 MHz Core_Clk
Variable Core_Clk
Parameter
Min
Max
Min
Max
Unit
Figure
EXTERNAL DATA MEMORY WRITE CYCLE
tWLWH
WR Pulsewidth
377
6tCORE – 100
ns
5
tAVLL
Address Valid after ALE Low
39
tCORE – 40
ns
5
tLLAX
Address Hold after ALE Low
44
tCORE – 35
ns
5
tLLWL
ALE Low to
WR Low
188
288
3tCORE – 50
3tCORE + 50
ns
5
tAVWL
Address Valid to
WR Low
188
4tCORE – 130
ns
5
tQVWX
Data Valid to
WR Transition
29
tCORE – 50
ns
5
tQVWH
Data Setup before
WR
406
7tCORE – 150
ns
5
tWHQX
Data and Address Hold after
WR
29
tCORE – 50
ns
5
tWHLH
WR High to ALE High
39
119
tCORE – 40
tCORE + 40
ns
5
t
LLAX
A0–A7
CORE_CLK
ALE (O)
PSEN (O)
PORT 0 (O)
PORT 2 (O)
WR (O)
t
WHLH
t
WHQX
t
WLWH
t
QVWX
t
QVWH
t
LLWL
t
AVWL
t
AVLL
A16–A23
A8–A15
DATA
Figure 5. External Data Memory Write Cycle
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