PXAG49KBBD Datasheet, PDF (36/42 Pages) NXP Semiconductors – XA 16-bit microcontroller family

Philips Semiconductors
XA 16-bit microcontroller family
64K Flash/2K RAM, watchdog, 2 UARTs
Preliminary data
XA-G49
ALE
RD
MULTIPLEXED
ADDRESS
AND DATA
UNMULTIPLEXED
ADDRESS
t_LLRL
t_RLRH
t_AVLL
t_LLAX
A4–A11 or A4–A19
t_RLDV
t_RHDZ
t_RHDX
DATA IN *
t_AVDVA
A0 or A1–A3, A12–A19
t_DXUA
* DATA IN is either D0–D7 or D0–D15, depending on the bus width (8 or 16 bits).
Figure 22. External Data Memory Read Cycle (ALE Cycle)
ALE
RD
SU00947
MULTIPLEXED
ADDRESS
AND DATA
UNMULTIPLEXED
ADDRESS
A4–A11
D0–D7
A0–A3, A12–A19
DATA IN *
t_AVDVB
A0–A3, A12–A19
Figure 23. External Data Memory Read Cycle (Non-ALE Cycle)
SU00708A
2001 Jun 27
36