參數(shù)資料
型號(hào): SAB-C505-LM
廠商: SIEMENS A G
元件分類: 微控制器/微處理器
英文描述: 8-Bit CMOS Microcontroller
中文描述: 8-BIT, MROM, 20 MHz, MICROCONTROLLER, PQFP44
封裝: PLASTIC, MQFP-44
文件頁數(shù): 70/85頁
文件大?。?/td> 487K
代理商: SAB-C505-LM
C505L
Data Sheet
68
06.99
AC Characteristics (16 MHz, 0.4 to 0.6 Duty Cycle)
(Operating Conditions apply)
(
C
L
for port 0, ALE and PSEN outputs = 100 pF;
C
L
for all other outputs = 80 pF)
*)
Interfacing the C505L to devices with float times up to 20 ns is permissible. This limited bus contention will not
cause any damage to port 0 drivers.
Program Memory Characteristics
Parameter
Symbol
Limit Values
Unit
16-MHz clock
Duty Cycle
0.4 to 0.6
Variable Clock
1/CLP= 2 MHz to 16 MHz
min.
max.
min.
max.
ALE pulse width
t
LHLL
t
AVLL
t
LLAX
t
LLIV
t
LLPL
t
PLPH
48
CLP – 15
ns
Address setup to ALE
10
TCL
Hmin
– 15
TCL
Hmin
– 15
ns
Address hold after ALE
10
ns
ALE to valid instruction in
75
2 CLP – 50
ns
ALE to PSEN
10
TCL
Lmin
– 15
CLP+
TCL
Hmin
– 15
ns
PSEN pulse width
73
ns
PSEN to valid instruction in
t
PLIV
38
CLP +
TCL
Hmin
– 50
ns
Input instruction hold after PSEN
t
PXIX
Input instruction float after PSEN
t
PXIZ
Address valid after PSEN
0
0
ns
*)
15
TCL
Lmin
– 10
ns
t
PXAV
t
AVIV
*)
20
TCL
Lmin
– 5
ns
Address to valid instruction in
95
2 CLP +
TCL
Hmin
– 55
ns
Address float to PSEN
t
AZPL
– 5
– 5
ns
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