參數(shù)資料
型號: GMS90L320
英文描述: 8-Bit Single-Chip Microcontrollers(低電壓,8位單片微控制器)
中文描述: 8位單芯片微控制器(低電壓,8位單片微控制器)
文件頁數(shù): 30/46頁
文件大小: 683K
代理商: GMS90L320
GMS90C320
26
OCT. 2000 Ver 1.2
AC Characteristics for 12MHz version
External Program Memory Characteristics
V
CC
= 5V:
V
CC
= 5V
+
10%,
15%; V
SS
= 0V; T
A
= 0
°
C to 70
°
C
(C
L
for port 0. ALE and PSEN outputs = 100pF; C
L
for all other outputs = 80pF)
V
CC
= 3.3V:
V
CC
= 3.3V
+
0.3V,
0.6V; V
SS
= 0V; T
A
= 0
°
C to 70
°
C
(C
L
for port 0. ALE and PSEN outputs = 50pF; C
L
for all other outputs = 50pF)
Variable clock:
Vcc = 5V: 1/t
CLCL
= 3.5 MHz to 12 MHz
Vcc = 3.3V: 1/t
CLCL
= 1 MHz to 12 MHz
Parameter
Symbol
12 MHz Oscillator
Variable Oscillator
1/t
CLCL
= 3.5 to 12MHz
Unit
Min.
Max.
Min.
Max.
ALE pulse width
t
LHLL
127
-
2t
CLCL
-40
-
ns
Address setup to ALE
t
AVLL
43
-
t
CLCL
-40
-
ns
Address hold after ALE
t
LLAX
43
-
t
CLCL
-40
-
ns
ALE low to valid instruction in
t
LLIV
-
233
-
4t
CLCL
-100
ns
ALE to PSEN
t
LLPL
58
-
t
CLCL
-25
-
ns
PSEN pulse width
t
PLPH
215
-
3t
CLCL
-35
-
ns
PSEN to valid instruction in
t
PLIV
-
150
-
3t
CLCL
-100
ns
Input instruction hold after PSEN
t
PXIX
0
-
0
-
ns
Input instruction float after PSEN
t
PXIZ
1)
1)
Interfacing the GMS90C320 to devices with float times up to 75 ns is permissible. This limited bus contention will not cause any damage
to port 0 Drivers.
-
63
-
t
CLCL
-20
ns
Address valid after PSEN
t
PXAV
1)
75
-
t
CLCL
-8
-
ns
Address to valid instruction in
t
AVIV
-
302
-
5t
CLCL
-115
ns
Address float to PSEN
t
AZPL
-10
-
-10
-
ns
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