HD64F2149 Datasheet, PDF (725/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

Table 22.15 AC Characteristics when Entering Another Mode from Memory Read Mode
Conditions: V_CC = 3.3 V ±0.3 V, 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
WE rise time
WE fall time
Symbol
t _nxtc
t _ceh
t _ces
t _dh
t _ds
t _wep
t_r
t_f
Min
20
0
0
50
50
70
—
—
Max
—
—
—
—
—
—
30
30
Unit
µs
ns
ns
ns
ns
ns
ns
ns
FA17 to FA0
Memory read mode
Address stable
Other mode command write
CE
OE
WE
FO7 to FO0
Data
Note: Do not enable WE and OE at the same time.
t_nxtc
t_wep t_ceh
t_ces
t_f
t_r
H'XX
t_dh
t_ds
Figure 22.17 Timing Waveforms when Entering Another Mode from Memory Read Mode
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