SH7059 Datasheet, PDF (807/1042 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

A21-A0
CE
OE
WE
I/O7-I/O0
Memory read mode
Address stable
24. ROM (SH7058S)
Command write in another mode
t_nxtc
t_ces
t_ceh
t_wep
tf
tr
t_ds
t_dh
Note : WE and OE should not be enabled simultaneously.
Figure 24.33 Timing at Transition from Memory Read Mode to Other Modes
Table 24.24 AC Characteristics in Memory Read Mode
Condition: V_CC = 3.3 V ± 0.3 V, V_SS = 0 V, T_a = 25°C ± 5°C
Code
Symbol
Min
Access time
t
acc
CE output delay time
t
ce
OE output delay time
t_oe
Output disable delay time
t_df
Data output hold time
t
5
oh
Max
Unit
20
µs
150
ns
150
ns
100
ns
ns
Note
A21-A0
CE
V_IL
OE
V_IL
WE
V_IH
I/O7-I/O0
Address stable
Address stable
t_acc
t_acc
t_oh
t_oh
Figure 24.34 CE/OE Enable State Read
Rev.3.00 Mar. 12, 2008 Page 717 of 948
REJ09B0177-0300