GMS90C3X Datasheet, PDF (44/59 Pages) Hynix Semiconductor – HYNIX SEMICONDUCTOR INC. 8-BIT SINGLE-CHIP MICROCONTROLLERS

GMS90 Series
AC Characteristics for GMS90 series (40MHz version)
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)
External Program Memory Characteristics
Parameter
Symbol
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
t_LHLL
t_AVLL
t_LLAX
t_LLIV
t_LLPL
t_PLPH
t_PLIV
t_PXIX
t_PXIZ ^†
t_PXAV ^†
t_AVIV
t_AZPL
40 MHz Oscillator
Min.
35
10
10
-
10
60
-
0
-
20
-
5
Max.
-
-
-
55
-
-
25
-
15
-
65
-
Variable Oscillator
1/t_CLCL = 3.5 to 40MHz
Min.
Max.
2t_CLCL−15
t_CLCL−15
t_CLCL−15
-
-
-
-
4t_CLCL−45
t_CLCL−15
3t_CLCL−15
-
-
-
3t_CLCL−50
0
-
-
t_CLCL−10
t_CLCL−5
-
-
5t_CLCL−60
5
-
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
† _{Interfacing the GMS90 series to devices with float times up to 20 ns is permissible. This limited bus contention will not cause}
any damage to port 0 Drivers.
40
Oct. 2000 Ver 3.1a