HD64F2357F20V Datasheet, PDF (686/1049 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-chip Microcomputer H8S Family / H8S/2300 Series

19.22.7 Status Read Mode
• Status read mode is used to identify what type of abnormal end has occurred. Use this mode when an abnormal end
occurs in auto-program mode or auto-erase mode.
• The return code is retained until a command write for other than status read mode is performed.
Table 19-47 AC Characteristics in Status Read 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
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
20
0
0
50
50
70
—
—
—
—
—
Max
—
—
—
—
—
—
150
100
150
30
30
Unit
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
A₁₈ to A₀
CE
OE
WE
I/O7 to I/O0
tces
tceh tnxtc tces
tceh tnxtc
tf ^twep tr
tf ^twep tr
tce
toe
tds
t_dh
H'71
tds
tdh
H'71
Note: I/O3 and I/O2 are undefined.
Figure 19-61 Status Read Mode Timing Waveforms
tnxtc
tdf
Rev.6.00 Oct.28.2004 page 656 of 1016
REJ09B0138-0600H