參數(shù)資料
型號(hào): SAF-C505A-4EM
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, OTPROM, 20 MHz, MICROCONTROLLER, PQFP44
封裝: PLASTIC, MQFP-44
文件頁數(shù): 71/85頁
文件大?。?/td> 335K
代理商: SAF-C505A-4EM
Semiconductor Group
71
1997-12-01
C505 / C505C
C505A / C505CA
AC Characteristics (16 MHz, 0.4 to 0.6 Duty Cycle, cont’d)
External Data 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.
158
max.
min.
max.
RD pulse width
t
RLRH
t
WLWH
t
LLAX2
t
RLDV
3 CLP - 30
ns
WR pulse width
158
3 CLP - 30
ns
Address hold after ALE
48
CLP - 15
ns
RD to valid data in
100
2 CLP+
TCL
Hmin
- 50
ns
Data hold after RD
t
RHDX
t
RHDZ
t
LLDV
t
AVDV
0
0
ns
Data float after RD
51
CLP - 12
ns
ALE to valid data in
200
4 CLP - 50
ns
Address to valid data in
200
4 CLP +
TCL
Hmin
-75
CLP+
TCL
Lmin
+ 15
ns
ALE to WR or RD
t
LLWL
73
103
CLP +
TCL
Lmin
- 15
2 CLP - 30
ns
Address valid to WR
t
AVWL
t
WHLH
t
QVWX
t
QVWH
95
ns
WR or RD high to ALE high
10
40
TCL
Hmin
- 15
TCL
Lmin
- 20
3 CLP +
TCL
Lmin
- 50
TCL
Hmin
- 20
TCL
Hmin
+ 15
ns
Data valid to WR transition
5
ns
Data setup before WR
163
ns
Data hold after WR
t
WHQX
t
RLAZ
5
ns
Address float after RD
0
0
ns
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