SH7014 Datasheet, PDF (576/754 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

18. 128 kB Flash Memory (F-ZTAT)
18.11.6 Status Read Mode
1. Status read mode is provided to specify the kind of abnormal end. Use this mode when an
abnormal end occurs in auto-program mode or auto-erase mode.
2. The return code is retained until a command write other than a status read mode command
write is executed.
Table 18.18 AC Characteristics in Status Read Mode
Conditions: V_CC = 5.0 V ±10%, V_SS = 0 V, T_a = 25°C ±5°C
Item
Symbol Min
Read time after command write t
20
strd
CE hold time
t
0
ceh
CE setup time
t_ces
0
Data hold time
t_dh
50
Data setup time
t_ds
50
Write pulse width
t
70
wep
OE output delay time
t
oe
Disable delay time
t
df
CE output delay time
t_ce
WE rise time
t_r
WE fall time
t
f
Max
150
100
150
30
30
Unit
μs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
A16 to A0
CE
tces
tceh tnxtc tces
tceh tnxtc
OE
WE
I/O7 to I/O0
twep
tf
tr
tds
tdh
H'71
Note: I/O2 and I/O3 are undefined.
twep
tf
tr
tds
tdh
H'71
tce
toe
Figure 18.26 Status Read Mode Timing Waveforms
tnxtc
tdf
Rev.5.00 Sep. 27, 2007 Page 542 of 716
REJ09B0398-0500