ADUC812_03 AD [Analog Devices], ADUC812_03 Datasheet - Page 47

• Manufacturer Part Number: ADUC812_03
• Manufacturer: AD [Analog Devices]

Parameter
EXTERNAL PROGRAM MEMORY READ CYCLE
t
t
t
t
t
t
t
t
t
t
t
t
REV. E
LHLL
AVLL
LLAX
LLIV
LLPL
PLPH
PLIV
PXIX
PXIZ
AVIV
PLAZ
PHAX
ALE Pulsewidth
Address Valid to ALE Low
Address Hold after ALE Low
ALE Low to Valid Instruction In
ALE Low to PSEN Low
PSEN Pulsewidth
PSEN Low to Valid Instruction In
Input Instruction Hold after PSEN
Input Instruction Float after PSEN
Address to Valid Instruction In
PSEN Low to Address Float
Address Hold after PSEN High
PORT 0 (I/O)
PORT 2 (O)
PSEN (O)
ALE (O)
MCLK
Figure 51. External Program Memory Read Cycle
t
LHLL
t
AVLL
PCL (OUT)
t
t
LLPL
LLAX
t
Min
127
43
53
53
205
0
0
AVIV
–47–
12 MHz
t
PLAZ
PCH
59
Max
234
145
312
25
t
PLPH
t
t
LLIV
PLIV
INSTRUCTION
(IN)
t
PXIX
Min
2t
t
t
t
3t
0
0
CK
CK
CK
Variable Clock
CK
CK
– 40
– 30
– 30
– 40
– 45
t
PXIZ
t
PHAX
Max
4t
3t
t
5t
25
CK
CK
CK
CK
– 25
– 100
– 105
– 105
ADuC812
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns