µ
PD78C14(A)
33
AC CHARACTERISTICS (T
A
= –40 to +85 ˚C, V
DD
= AV
DD
= +5.0 V
±
10 %, V
SS
= AV
SS
= 0 V)
READ/WRITE OPERATION:
Parameter
Symbol
Test Condition
MIN.
MAX.
UNIT
X1 Input Cycle Time
t
CYC
66
250
ns
Address Setup Time to ALE
t
AL
f
xx
= 15 MHz, C
L
= 150 pF
30
ns
Address Hold Time after ALE
↓
t
LA
35
ns
Address
→
RD
↓
Delay Time
t
AR
100
ns
RD
↓
→
Address Floating Time
t
AFR
C
L
= 150 pF
20
ns
Address
→
Data Input Time
t
AD
f
xx
= 15 MHz, CL = 150 pF
250
ns
ALE
↓
→
Data Input Time
t
LDR
135
ns
RD
↓
→
Data Input Time
t
RD
120
ns
ALE
↓
→
RD
↓
Delay Time
t
LR
15
ns
Data Hold Time after RD
↑
t
RDH
C
L
= 150 pF
0
ns
RD
↑
→
ALE
↑
Delay Time
t
RL
f
xx
= 15 MHz, C
L
= 150 pF
80
ns
RD Width Low
t
RR
Data Read
215
ns
f
xx
= 15 MHz, C
L
= 150 pF
OP code Fetch
415
ns
f
xx
= 15 MHz, C
L
= 150 pF
ALE Width High
t
LL
f
xx
= 15 MHz, C
L
= 150 pF
90
ns
M1 Setup Time to ALE
↓
t
ML
f
xx
= 15 MHz
30
ns
M1 Hold Time after ALE
↓
t
LM
35
ns
IO/M Setup Time to ALE
↓
t
IL
30
ns
IO/M Hold Time after ALE
↓
t
LI
35
ns
Address
→
WR
↓
Delay Time
t
AW
f
xx
= 15 MHz, C
L
= 150 pF
100
ns
ALE
↓
→
Data Output Time
t
LDW
180
ns
WR
↓
→
Data Output Time
t
WD
C
L
= 150 pF
100
ns
ALE
↓
→
WR
↓
Delay Time
t
LW
f
xx
= 15 MHz, C
L
= 150 pF
15
ns
Data Setup Time to WR
↑
t
DW
165
ns
Data Hold Time after WR
↑
t
WDH
60
ns
WR
↑
→
ALE
↑
Delay Time
t
WL
80
ns
WR Width Low
t
WW
215
ns
*
