h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 742

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 20 ROM
Table 20.14 AC Characteristics in Transition from Memory Read Mode to Another Mode
Conditions: V
Item
Command write cycle
CE hold time
CE setup time
Data hold time
Data setup time
Write pulse width
WE rise time
WE fall time
Rev. 5.00 Sep 22, 2005 page 716 of 1136
REJ09B0257-0500
Figure 20.19 Timing Waveforms in Transition from Memory Read Mode to Another Mode
I/O7–I/O0
Note: Do not enable WE and OE at the same time.
A18–A0
WE
OE
CE
CC
= 5.0 V ±0.5 V, V
Memory read mode
Address stable
SS
Symbol
t
t
t
t
t
t
t
t
= 0 V, T
nxtc
ceh
ces
dh
ds
wep
r
f
a
= 25°C ±5°C
t
nxtc
Min
20
0
0
50
50
70
—
—
Other mode command write
t
ces
t
f
Max
—
—
—
—
—
—
30
30
t
wep
t
ds
t
ceh
t
r
Unit
µs
ns
ns
ns
ns
ns
ns
ns
t
dh