HD6432633 Datasheet, PDF (1002/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

22.11.6 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 22-21 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
Read time after command write
CE hold time
CE setup time
Data hold time
Data setup time
Write pulse width
OE output delay time
Disable delay time
CE output delay time
WE rise time
WE fall time
Symbol
t _nxtc
t _ceh
t _ces
t _dh
t _ds
t _wep
t _oe
t _df
t _ce
t_r
t_f
Min
Max
Unit
20
—
µs
0
—
ns
0
—
ns
50
—
ns
50
—
ns
70
—
ns
—
150
ns
—
100
ns
—
150
ns
—
30
ns
—
30
ns
A18–A0
CE
OE
WE
I/O7–I/O0
tces
tceh tnxtc tces
tceh tnxtc
twep
tf
tr
twep
tf
tr
tce
toe
tds
tdh
H'71
tds
tdh
H'71
Note: I/O2 and I/O3 are undefined.
Figure 22-25 Status Read Mode Timing Waveforms
tnxtc
tdf
948