SH7050 Datasheet, PDF (647/841 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH RISC engine Family/

Section 19 ROM (256 kB Version)
Table 19.13 AC Characteristics in Transition from Memory Read Mode to Another Mode
Conditions: V_CC = 5.0 V ±10%, V_SS = 0 V, T_a = 25°C ±5°C
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
Symbol
t_nxtc
t_ceh
t_ces
t_dh
t
ds
t
wep
t_r
t_f
Min
20
0
0
50
50
70
Max
Unit
Notes
µs
ns
ns
ns
ns
ns
30
ns
30
ns
A16–A0
CE
Memory read mode
Address stable
Other mode command write
t_nxtc
t_ces
t_ceh
OE
WE
I/O7–I/O0
t_wep
t_f
t_r
t_ds
t_dh
Note: Do not enable WE and OE at the same time.
Figure 19.15 Timing Waveforms in Transition from Memory Read Mode to Another Mode
Rev. 5.00 Jan 06, 2006 page 627 of 818
REJ09B0273-0500