h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 845

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

21A.13.5 Auto-Erase Mode
1. Auto-erase mode supports only entire memory erasing.
2. Do not perform a command write during auto-erasing.
3. Confirm normal end of auto-erasing by checking I/O6. Alternatively, status read mode can also
4. Status polling I/O6 and I/O7 pin information is retained until the next command write. As long
Table 21A-21 AC Characteristics in Auto-Erase Mode
Conditions: V
Item
Command write cycle
C E
C E
Data hold time
Data setup time
Write pulse width
Status polling start time
Status polling access time
Memory erase time
Erase setup time
Erase end setup time
W E
W E
be used for this purpose (I/O7 status polling uses the auto-erase operation end decision pin).
as the next command write has not been performed, reading is possible by enabling
O E
hold time
setup time
rise time
fall time
.
CC
= 5.0 V ± 0.5 V, V
SS
= 0 V, T
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
nxtc
ceh
ces
dh
ds
wep
ests
spa
erase
ens
enh
r
f
a
= 25°C ± 5°C
Rev. 6.00 Feb 22, 2005 page 785 of 1484
Min.
20
0
0
50
50
70
1
—
100
100
100
—
—
Section 21A ROM (H8S/2636 Group)
Max.
—
—
—
—
—
—
—
150
40000
—
—
30
30
REJ09B0103-0600
Unit
µs
ns
ns
ns
ns
ns
ms
ns
ms
ns
ns
ns
ns
C E
and