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24 PRELIMINARY
8XC251SA/SB/SP/SQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER
Figure 9. External Bus Cycle: Data Write (Nonpage Mode)
WR#
P0
P2/A16/A17
T
LHLL
†
T
WLWH
†
T
WHLH
A4179-01
XTAL1
ALE
T
OSC
T
WHQX
T
QVWH
T
WHQX
T
AVWL1
†
T
AVWL2
†
T
WHAX
A7:0
D7:0
Data Out
A15:8/A16/A17
†
The value of this parameter depends on wait states. See the table of AC characteristics.
T
LLAX
T
LHAX
†
T
AVLL
†