h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 978

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 21C ROM (H8S/2635 Group)
21C.13.6 Status Read Mode
1. Status read mode is provided to identify the kind of abnormal end. Use this mode when an
2. The return code is retained until a command write other than a status read mode command
Table 21C-22 AC Characteristics in Status Read Mode
Conditions: V
Rev. 6.00 Feb 22, 2005 page 918 of 1484
REJ09B0103-0600
Item
Read time after command write
C E
C E
Data hold time
Data setup time
Write pulse width
O E
Disable delay time
C E
W E
W E
Note: I/O2 and I/O3 are undefined.
I/O7 to I/O0
A18 to A0
abnormal end occurs in auto-program mode or auto-erase mode.
write is executed.
hold time
setup time
output delay time
output delay time
rise time
fall time
WE
OE
CE
CC
= 5.0 V ±0.5 V, V
Figure 21C-24 Status Read Mode Timing Waveforms
t
ces
t
f
t
ds
t
wep
H'71
t
t
ceh
r
SS
t
dh
= 0 V, T
t
nxtc
t
ces
t
f
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
nxtc
ceh
ces
dh
ds
wep
oe
df
ce
r
f
ds
a
= 25°C ± 5°C
t
wep
H'71
t
ceh
t
r
t
dh
t
nxtc
Min.
20
0
0
50
50
70
—
—
—
—
—
t
ce
t
oe
Max.
—
—
—
—
—
—
150
100
150
30
30
t
df
t
nxtc
Unit
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns