参数资料
型号: EVAL-ADUC812QSZ
厂商: Analog Devices Inc
文件页数: 44/57页
文件大小: 0K
描述: BOARD EVALUATION FOR ADUC812
产品培训模块: Process Control
标准包装: 1
系列: QuickStart™ 套件
类型: MCU
适用于相关产品: ADuC812
所含物品: 评估板、电源、缆线、软件和说明文档
REV.
–49–
ADuC812
12 MHz
Variable Clock
Parameter
Min
Max
Min
Max
Unit
EXTERNAL DATA MEMORY WRITE CYCLE
tWLWH
WR Pulsewidth
400
6tCK – 100
ns
tAVLL
Address Valid after ALE Low
43
tCK –40
ns
tLLAX
Address Hold after ALE Low
48
tCK –35
ns
tLLWL
ALE Low to
RD or WR Low
200
300
3tCK –50
3tCK +50
ns
tAVWL
Address Valid to
RD or WR Low
203
4tCK – 130
ns
tQVWX
Data Valid to
WR Transition
33
tCK –50
ns
tQVWH
Data Setup before
WR
433
7tCK – 150
ns
tWHQX
Data and Address Hold after
WR
33
tCK –50
ns
tWHLH
RD or WR High to ALE High
43
123
tCK –40
6tCK – 100
ns
MCLK
ALE (O)
PSEN (O)
WR (O)
PORT 2 (O)
tWHLH
tWLWH
tLLWL
tAVWL
tLLAX
tAVLL
tQVWX
tQVWH
tWHQX
A0–A7
DATA
A16–A23
A8–A15
Figure 53. External Data Memory Write Cycle
F
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