h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 672

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 21 ROM
Notes on Use of Erase-Program Mode
21.10.7 Status Read Mode
Table 21.18 AC Characteristics in Status Read Mode
Conditions: V
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
Rev. 4.00 Jun 06, 2006 page 618 of 1004
REJ09B0301-0400
Auto-erase mode supports only entire memory erasing.
Do not perform a command write during auto-erasing.
Confirm normal end of auto-erasing by checking FO6. Alternatively, status read mode can also
be used for this purpose (FO7 status polling uses the auto-erase operation end identification
pin).
The status polling FO6 and FO7 pin information is retained until the next command write.
Until the next command write is performed, reading is possible by enabling CE and OE.
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.
CC
= 5.0 V ±10%, V
(Mask ROM Version, H8S/2138 F-ZTAT, H8S/2134 F-ZTAT, and H8S/2132 F-ZTAT)
SS
= 0 V, T
Symbol
t
t
t
t
t
t
t
t
t
t
t
nxtc
ceh
ces
dh
ds
wep
oe
df
ce
r
f
a
= 25°C ±5°C
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