参数资料
型号: USB-EA-CONVZ
厂商: Analog Devices Inc
文件页数: 68/68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
–9–
ADuC824
12.58 MHz Core_Clk
Variable Core_Clk
Parameter
Min
Max
Min
Max
Unit
Figure
EXTERNAL PROGRAM MEMORY
tLHLL
ALE Pulsewidth
119
2tCORE – 40
ns
3
tAVLL
Address Valid to ALE Low
39
tCORE – 40
ns
3
tLLAX
Address Hold after ALE Low
49
tCORE – 30
ns
3
tLLIV
ALE Low to Valid Instruction In
218
4tCORE – 100
ns
3
tLLPL
ALE Low to
PSEN Low
49
tCORE – 30
ns
3
tPLPH
PSEN Pulsewidth
193
3tCORE – 45
ns
3
tPLIV
PSEN Low to Valid Instruction In
133
3tCORE – 105
ns
3
tPXIX
Input Instruction Hold after
PSEN
00
ns
3
tPXIZ
Input Instruction Float after
PSEN
54
tCORE – 25
ns
3
tAVIV
Address to Valid Instruction In
292
5tCORE – 105
ns
3
tPLAZ
PSEN Low to Address Float
25
ns
3
tPHAX
Address Hold after
PSEN High
0
ns
3
t
LHLL
t
AVLL
PCL
(OUT)
INSTRUCTION
(IN)
PCH
CORE_CLK
ALE (O)
PSEN (O)
PORT 0 (I/O)
PORT 2 (O)
t
LLPL
t
LLAX
t
PLAZ
t
PXIX
t
PXIZ
t
PLIV
t
LLIV
t
PLPH
t
PHAX
t
AVIV
Figure 3. External Program Memory Read Cycle
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