HMS99C52 Datasheet, PDF (32/43 Pages) Hynix Semiconductor – 8-BIT SINGLE-CHIP MICROCONTROLLERS

HMS99C5X Series
AC Characteristics for HMS99C5X series (12MHz)
External Data Memory Characteristics
Parameter
Symbol
RD pulse width
WR pulse width
Address hold after ALE
RD to valid data in
Data hold after RD
Data float after RD
ALE to valid data in
Address to valid data in
ALE to WR or RD
Address valid to WR or RD
WR or RD high to ALE high
Data valid to WR transition
Data setup before WR
Data hold after WR
Address float after RD
t_RLRH
t_WLWH
t_LLAX2
t_RLDV
t_RHDX
t_RHDZ
t_LLDV
t_AVDV
t_LLWL
t_AVWL
t_WHLH
t_QVWX
t_QVWH
t_WHQX
t_RLAZ
12 MHz Oscillator
Min.
400
400
53
-
0
-
-
-
200
203
43
33
433
33
-
Max.
-
-
-
252
-
97
517
585
300
-
123
-
-
-
0
Variable Oscillator
1/t_CLCL = 3.5 to 12MHz
Min.
Max.
6t_CLCL-100
6t_CLCL-100
t_CLCL-30
-
0
-
-
-
5t_CLCL-165
-
-
-
-
3t_CLCL-50
4t_CLCL-130
t_CLCL-40
t_CLCL-50
7t_CLCL-150
t_CLCL-50
-
2t_CLCL-70
8t_CLCL-150
9t_CLCL-165
3t_CLCL+50
-
t_CLCL+40
-
-
-
0
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Advance Information (12MHz)
External Clock Drive
Parameter
Oscillator period (V_CC=5V)
High time
Low time
Rise time
Fall time
Symbol
t_CLCL
t_CHCX
t_CLCX
t_CLCH
t_CHCL
Variable Oscillator
(Freq. = 3.5 to 12MHz)
Min.
Max.
83.3
285.7
20
t_CLCL - t_CLCX
20
t_CLCL - t_CHCX
-
20
-
20
Unit
ns
ns
ns
ns
ns
28
Jan. 2003 Ver 1.0