XA-G49 Datasheet, PDF (37/42 Pages) NXP Semiconductors – XA 16-bit microcontroller family 64K FLASH/2K RAM, watchdog, 2 UARTs

Philips Semiconductors
XA 16-bit microcontroller family
64K Flash/2K RAM, watchdog, 2 UARTs
Preliminary specification
XA-G49
ALE
t_LLWL
t_WLWH
WRL or WRH
MULTIPLEXED
ADDRESS
AND DATA
UNMULTIPLEXED
ADDRESS
t_AVLL
t_LLAX t_QVWX
A4–A11 or A4–A15
t_AVWL
DATA OUT *
A0 or A1–A3, A12–A19
t_WHQX
t_UAWH
* DATA OUT is either D0–D7 or D0–D15, depending on the bus width (8 or 16 bits).
Figure 24. External Data Memory Write Cycle
XTAL1
ALE
t_CRAR
ADDRESS BUS
SU00584C
WAIT
BUS STROBE
(WRL, WRH,
RD, OR PSEN)
t_WTH
(The dashed line shows the strobe without WAIT.)
t_WTL
SU00709A
Figure 25. WAIT Signal Timing
2000 Apr 03
37