參數(shù)資料
型號: GMS90C32
英文描述: 8-Bit CMOS Microcontrollers( 高性價(jià)比的51單片機(jī) ,片內(nèi)無ROM,256字節(jié)RAM,工作電壓5V)
中文描述: 8位CMOS微控制器(高性價(jià)比的51單片機(jī),片內(nèi)無光盤,256字節(jié)的RAM,工作電壓5V的)
文件頁數(shù): 39/59頁
文件大?。?/td> 812K
代理商: GMS90C32
AC Characteristics for GMS90 series (33MHz version)
V
CC
= 5 V + 10%, -15%;
V
SS
= 0 V; T
A
= 0
°
C to 70
°
C
(
C
L
for port 0, ALE and PSEN outputs = 100pF;
C
L
for all other outputs =80pF)
Program Memory Characteristics
Parameter
Symbol
Limit Values
Unit
33 MHz
Clock
Variable Clock
1/
t
CLCL
= 3.5 MHz to 33 MHz
min.
max.
min.
max.
ALE pulse width
t
LHLL
40
-
2
t
CLCL
- 20
-
ns
Address setup to ALE
t
AVLL
10
-
t
CLCL
- 20
-
ns
Address hold after ALE
t
LLAX
10
-
t
CLCL
- 20
-
ns
ALE low to valid instr in
t
LLIV
-
56
-
4
t
CLCL
- 65
ns
ALE to PSEN
t
LLPL
15
-
t
CLCL
- 15
-
ns
PSEN pulse width
t
PLPH
80
-
3
t
CLCL
- 20
-
ns
PSEN to valid instr in
t
PLIV
-
35
-
3
t
CLCL
- 55
ns
Input instruction hold after PSEN
t
PXIX
0
-
0
-
ns
Input instruction float after PSEN
t
PXIZ*)
-
20
-
t
CLCL
- 10
ns
Address valid after PSEN
t
PXAV*)
25
-
t
CLCL
- 5
-
ns
Address to valid instruction in
t
AVIV
-
91
-
5
t
CLCL
- 60
ns
Address float to PSEN
t
AZPL
0
-
0
-
ns
*) Interfacing the GMS90 series to devices with float times up to 35 ns is permissible. This limited bus contention
will not cause any damage to port 0 Drivers.
8-Bit CMOS Microcontroller
GMS90 Series
MAY. 1998
39
LG Semicon MCU
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