SH7059 Datasheet, PDF (890/1042 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

25. ROM (SH7059)
25.10.2 AC Characteristics and Timing in Programmer Mode
Table 25.22 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
Command write cycle
t_nxtc
20
CE hold time
t_ceh
0
CE setup time
t_ces
0
Data hold time
t_dh
50
Data setup time
t_ds
50
Programming pulse width
t_wep
70
WE rise time
t_r
WE fall time
t_f
Max
Unit
µs
ns
ns
ns
ns
ns
30
ns
30
ns
Note
A21-A0
CE
OE
WE
I/O7-I/O0
Command write
t_ces
t_ceh
t_nxtc
t_wep
tf
tr
t_ds
t_dh
Memory read mode
Address stable
Note : Data is latched at the rising edge of WE.
Figure 25.32 Memory Read Timing after Command Write
Table 25.23 AC Characteristics in Transition from Memory Read Mode to Others
Condition: V_CC = 3.3 V ± 0.3 V, V_SS = 0 V, T_a = 25°C ± 5°C
Code
Symbol
Min
Command write cycle
t_nxtc
20
CE hold time
t_ceh
0
CE setup time
t_ces
0
Data hold time
t
50
dh
Data setup time
t_ds
50
Programming pulse width
t_wep
70
WE rise time
t_r
WE fall time
t_f
Max
Unit
µs
ns
ns
ns
ns
ns
30
ns
30
ns
Note
Rev.3.00 Mar. 12, 2008 Page 800 of 948
REJ09B0177-0300