HD64F3039F18 Datasheet, PDF (508/710 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

Section 15 ROM
15.8.6 Auto-Erase Mode
AC Characteristics
Table 15.17 AC Characteristics in Auto-Erase 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
Status polling start time
Status polling access time
Memory erase time
WE rise time
WE fall time
Erase setup time
Erase end setup time
Symbol
t_nxtc
t_ceh
t
ces
t
dh
t_ds
t_wep
t_ests
t
spa
t
erase
t_r
t_f
t_ens
t
enh
Min
20
0
0
50
50
70
1
—
100
—
—
100
100
Max
—
—
—
—
—
—
—
150
40000
30
30
—
—
Unit
µs
ns
ns
ns
ns
ns
ms
ns
ms
ns
ns
ns
ns
Notes
FWE
A16–A0
CE
OE
WE
I/O7
I/O6
t_ens t_ces
t_ceh t_nxtc
t_f
t_wep
t_r
t_ds
t_dh
I/O5–I/O0
H'20
t_enh
t_nxtc
t_ests
t_spa
t_erase
Erase end
identification signal
H'20
Erase normal and
confirmation signal
H'00
Figure 15.21 Auto-Erase Mode Timing Waveforms
Rev.3.00 Mar. 26, 2007 Page 484 of 682
REJ09B0353-0300