Figure 6.14 Timing Waveforms In Transition From Memory Read Mode To Another Mode; Figure 6.15 Ce And Oe Enable State Read Timing Waveforms; Table 6.17 Ac Characteristics In Memory Read Mode - Renesas H8/3847R Series Hardware Manual

Section 6 ROM
A15−A0
CE
OE
WE
I/O7−I/O0
Note: Do not enable WE and OE at the same time.

Figure 6.14 Timing Waveforms in Transition from Memory Read Mode to Another Mode

Table 6.17 AC Characteristics in Memory Read Mode

Conditions: V = 3.3 V ±0.3 V, V
CC
Item
Access time
CE output delay time
OE output delay time
Output disable delay time
Data output hold time
A15−A0
CE
OE
WE
I/O7−I/O0
Figure 6.15 CE
Rev. 6.00 Aug 04, 2006 page 192 of 680
REJ09B0145-0600
Memory read mode
Address stable
t
nxtc
= 0 V, T = 25°C ±5°C
SS a
Symbol Min
t —
acc
t —
ce
t —
oe
t —
df
t 5
oh
Address stable
t
acc
t
oh
CE and OE OE Enable State Read Timing Waveforms
CE CE OE OE
Other mode command write
t t
ces
ceh
t
wep
t t
f
t
ds
Max Unit
20 µs
150 ns
150 ns
100 ns
— ns
Address stable
t
acc
t
oh
r
t
dh
Notes
Figure 6.15
Figure 6.16