SH7052 Datasheet, PDF (759/919 Pages) Renesas Technology Corp – SuperHTM RISC engine

20.11.6 Status Read Mode
1. Status read mode is provided to identify 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 20.20 AC Characteristics in Status Read Mode (Conditions: V_CC = 3.3 V ±0.3 V,
V_SS = 0 V, T_a = 25°C ±5°C)
Item
Symbol Min
Max Unit Notes
Read time after command write
t _nxtc
20
µs
CE hold time
t _ceh
0
ns
CE setup time
t _ces
0
ns
Data hold time
t _dh
50
ns
Data setup time
t _ds
50
ns
Write pulse width
t _wep
70
ns
OE output delay time
t _oe
150
ns
;;;; ^{Disable delay time}
t _df
CE output delay time
t _ce
WE rise time
t_r
WE fall time
t_f
100
ns
150
ns
30
ns
30
ns
A18 to A0
tces
tceh tnxtc tces
tceh tnxtc
tnxtc
CE
tce
OE
twep
twep
tf
tr
tf
tr
toe
WE
tds
tdh
tds
tdh
tdf
I/O7 to I/O0
H'71
H'71
Note: I/O2 and I/O3 are undefined.
Figure 20.27 Status Read Mode Timing Waveforms
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