參數(shù)資料
型號: GMS97L54
英文描述: 8-Bit CMOS Microcontroller(8位CMOS 微控制器)
中文描述: 8位CMOS微控制器(8位的CMOS微控制器)
文件頁數(shù): 33/59頁
文件大?。?/td> 812K
代理商: GMS97L54
AC Characteristics for GMS90 series (12MHz version)
Vcc = 5 V
: V
CC
= 5 V + 10%, -15%;
V
SS
= 0 V; TA = 0
°
C to 70
°
C
(
C
L
for port 0. ALE and PSEN outputs = 100pF; CL for all other outputs = 80 pF)
Vcc = 3.3 V
: V
CC
= 3.3 V + 0.3 V, -0.6 V;
V
SS
= 0 V; TA = 0
°
C to 70
°
C
(
C
L
for port 0. ALE and PSEN outputs = 50pF;
C
L
for all other outputs = 50 pF)
Variable clock
: Vcc = 5V : 1/
t
CLCL
= 3.5 MHz to 12 MHz
Vcc = 3.3V : 1/
t
CLCL
= 1 MHz to 12 MHz
Program Memory Characteristics
Parameter
Symbol
Limit Values
Unit
12 MHz
Clock
Variable Clock
min.
max.
min.
max.
ALE pulse width
t
LHLL
127
-
2
t
CLCL
- 40
-
ns
Address setup to ALE
t
AVLL
43
-
t
CLCL
- 40
-
ns
Address hold after ALE
t
LLAX
30
-
t
CLCL
-53
-
ns
ALE low to valid instr in
t
LLIV
-
233
-
4
t
CLCL
- 100
ns
ALE to PSEN
t
LLPL
58
-
t
CLCL
- 25
-
ns
PSEN pulse width
t
PLPH
215
-
3
t
CLCL
- 35
-
ns
PSEN to valid instr in
t
PLIV
-
150
-
3
t
CLCL
- 100
ns
Input instruction hold after PSEN
t
PXOX
0
-
0
-
ns
Input instruction float after PSEN
t
PXIZ*)
-
63
-
t
CLCL
- 20
ns
Address valid after PSEN
t
PXAV*)
75
-
t
CLCL
- 8
-
ns
Address to valid instruction in
t
AVIV
-
302
-
5
t
CLCL
- 115
ns
Address float to PSEN
t
AZPL
0
-
0
-
ns
*) Interfacing the GMS90 series to devices with float times up to 75 ns is permissible. This limited bus
contention will not cause any damage to port 0 Drivers.
8-Bit CMOS Microcontroller
GMS90 Series
MAY. 1998
33
LG Semicon MCU
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