参数资料
型号: ADUC845BCPZ8-3
厂商: ANALOG DEVICES INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 12.58 MHz, MICROCONTROLLER, QCC56
封装: 8 X 8 MM, LEAD FREE, MO-220-VLLD-2, LFCSP-56
文件页数: 105/108页
文件大小: 1940K
代理商: ADUC845BCPZ8-3
ADuC845/ADuC847/ADuC848
Rev. B | Page 96 of 108
Table 65. EXTERNAL DATA MEMORY READ CYCLE Parameter
12.58 MHz Core Clock
6.29 MHz Core Clock
Min
Max
Min
Max
Unit
tRLRH
RD Pulse Width
60
125
ns
tAVLL
Address Valid After ALE Low
60
120
ns
tLLAX
Address Hold After ALE Low
145
290
ns
tRLDV
RD Low to Valid Data In
48
100
ns
tRHDX
Data and Address Hold After RD
0
ns
tRHDZ
Data Float After RD
150
625
ns
tLLDV
ALE Low to Valid Data In
170
350
ns
tAVDV
Address to Valid Data In
230
470
ns
tLLWL
ALE Low to RD or WR Low
130
255
ns
tAVWL
Address Valid to RD or WR Low
190
375
ns
tRLAZ
RD Low to Address Float
15
35
ns
tWHLH
RD or WR High to ALE High
60
120
ns
04741-078
ALE (O)
PORT 0 (I/O)
PORT 2 (O)
tWHLH
tLLDV
tLLWL
tRLRH
tAVWL
tLLAX
tAVLL
tRLAZ
tRHDX
tRHDZ
tAVDV
A0 A7 (OUT)
DATA (IN)
A16 A23
A8 A15
tRLDV
PSEN (O)
RD (O)
Figure 73. External Data Memory Read Cycle
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