aduc831bcp-reel Analog Devices, Inc., aduc831bcp-reel Datasheet - Page 68

• Manufacturer Part Number: aduc831bcp-reel
• Description: Microconverter, 12-bit Adcs And Dacs With Embedded 62 Kbytes Flash Mcu
• Manufacturer: Analog Devices, Inc.

ADuC831
Parameter
EXTERNAL DATA MEMORY READ CYCLE
t
t
t
t
t
t
t
t
t
t
t
t
RLRH
AVLL
LLAX
RLDV
RHDX
RHDZ
LLDV
AVDV
LLWL
AVWL
RLAZ
WHLH
RD Pulsewidth
Address Valid after ALE Low
Address Hold after ALE Low
RD Low to Valid Data In
Data and Address Hold after RD
Data Float after RD
ALE Low to Valid Data In
Address to Valid Data In
ALE Low to RD or WR Low
Address Valid to RD or WR Low
RD Low to Address Float
RD or WR High to ALE High
PORT 0 (I/O)
PORT 2 (O)
PSEN (O)
ALE (O)
RD (O)
M
CLK
t
AVLL
Figure 71. External Data Memory Read Cycle
A16–A23
A0–A7
(OUT)
t
AVDV
t
LLAX
t
AVWL
t
LLWL
t
LLDV
Min
400
43
48
0
200
203
43
–68–
t
RLAZ
12 MHz
t
RLDV
A8–A15
Max
252
97
517
585
300
0
123
t
DATA (IN)
RLRH
t
RHDX
t
t
0
t
Min
6t
3t
4t
CK
CK
CK
Variable Clock
CK
CK
CK
– 40
– 35
– 40
– 100
– 50
– 130
t
WHLH
t
RHDZ
Max
5t
2t
8t
9t
3t
0
6t
CK
CK
CK
CK
CK
CK
– 165
–70
– 150
– 165
+ 50
– 100
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Figure
71
71
71
71
71
71
71
71
71
71
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