參數(shù)資料
型號: C517A
廠商: SIEMENS AG
元件分類: 8位微控制器
英文描述: 8-Bit CMOS Microcontroller
中文描述: 8位CMOS微控制器
文件頁數(shù): 62/72頁
文件大?。?/td> 845K
代理商: C517A
C517A
Semiconductor Group
60
AC Characteristics (24 MHz)
(Operating Conditions apply)
(
C
L
for port 0, ALE and PSEN outputs = 100 pF;
C
L
for all other outputs = 80 pF)
Program Memory Characteristics
*)
Interfacing the C517A to devices with float times up to 37 ns is permissible. This limited bus contention will not
cause any damage to port 0 drivers.
CLKOUT Characteristics
Parameter
Symbol
Limit Values
Unit
24 MHz
Clock
Variable Clock
1/
t
CLCL
= 3.5 MHz to 24 MHz
min.
2
t
CLCL
– 40
t
CLCL
– 25
t
CLCL
– 25
t
CLCL
– 20
3
t
CLCL
– 30
min.
max.
max.
ALE pulse width
t
LHLL
t
AVLL
t
LLAX
t
LLIV
t
LLPL
t
PLPH
t
PLIV
t
PXIX
t
PXIZ*)
t
PXAV*)
t
AVIV
t
AZPL
43
ns
Address setup to ALE
17
ns
Address hold after ALE
17
4
t
CLCL
– 87
ns
ALE low to valid instruction in
80
ns
ALE to PSEN
22
ns
PSEN pulse width
95
3
t
CLCL
– 65
t
CLCL
– 10
5
t
CLCL
– 60
ns
PSEN to valid instruction in
60
ns
Input instruction hold after PSEN
0
0
ns
Input instruction float after PSEN
32
t
CLCL
– 5
ns
Address valid after PSEN
37
ns
Address to valid instr in
148
ns
Address float to PSEN
0
0
ns
Parameter
Symbol
Limit Values
Unit
24 MHz
Clock
Variable Clock
1/
t
CLCL
= 3.5 MHz to 24 MHz
min.
7
t
CLCL
– 40
2
t
CLCL
– 40
10
t
CLCL
– 40
t
CLCL
– 40
min.
max.
max.
ALE to CLKOUT
t
LLSH
t
SHSL
t
SLSH
t
SLLH
252
ns
CLKOUT high time
43
ns
CLKOUT low time
377
t
CLCL
+ 40
ns
CLKOUT low to ALE high
2
82
ns
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