GMS90 Hynix Semiconductor, GMS90 Datasheet - Page 44

• Manufacturer Part Number: GMS90
• Description: 8-BIT SINGLE-CHIP MICROCONTROLLERS
• Manufacturer: Hynix Semiconductor

AC Characteristics for GMS90 series (40MHz version)
V
(C
External Program Memory Characteristics
†
any damage to port 0 Drivers.
40
ALE pulse width
Address setup to ALE
Address hold after ALE
ALE low to valid instruction in
ALE to PSEN
PSEN pulse width
PSEN to valid instruction in
Input instruction hold after PSEN
Input instruction float after PSEN
Address valid after PSEN
Address to valid instruction in
Address float to PSEN
Interfacing the GMS90 series to devices with float times up to 20 ns is permissible. This limited bus contention will not cause
CC
L
for port 0. ALE and PSEN outputs = 100pF; C
= 5V + 10%,
Parameter
15%; V
SS
= 0V; T
t
t
t
t
t
t
t
t
t
t
t
t
LHLL
AVLL
LLAX
LLIV
LLPL
PLPH
PLIV
PXIX
PXIZ
PXAV
AVIV
AZPL
A
Symbol
= 0 C to 70 C
†
†
L
for all other outputs = 80pF)
40 MHz Oscillator
Min.
35
10
10
10
60
20
0
5
-
-
-
-
Max.
55
25
15
65
-
-
-
-
-
-
-
-
2t
3t
1/t
t
t
t
CLCL
CLCL
CLCL
t
CLCL
CLCL
CLCL
Variable Oscillator
Min.
CLCL
0
5
-
-
-
-
15
15
15
15
15
5
= 3.5 to 40MHz
Dec. 1998 Ver 3.0
4t
3t
5t
t
CLCL
CLCL
CLCL
CLCL
Max.
GMS90 Series
-
-
-
-
-
-
-
-
10
45
50
60
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns