XA-H3 Datasheet, PDF (30/36 Pages) NXP Semiconductors – CMOS 16-bit highly integrated microcontroller

Philips Semiconductors
CMOS 16-bit highly integrated microcontroller
Preliminary specification
XA-H3
TIMING DIAGRAMS
All references to numbered Notes are to the notes following the AC Electrical Characteristics tables
ClkOut
A0
A19–A1
CS
BHE/BLE
t_CHAV
t_AVSL
t_CHSL
t_CHAH
t_AHDR
(Does Not Include A0)
t_CHSH
OE
D15–D0
Note 3
t_DIH (Note 2)
t_DIS
Note: On Generic Data Reads, A0 can terminate a full clock period before A19–A1, and therefore
should not be used on some peripheral devices.
Figure 7. Read on 16-Bit Bus
SU01277
ClkOut
A[19:0]
CS
t_CHAV
Address
t_AVSL
t_CHSL
t_CHAV
Address + 2
t_CHAV
Address + 4
t_CHSH
BHE/BLE
OE
Note 3
D[15:0]
Driven by XA
t_DIH
Note 2
t_DIS
t_DIH
Note 2
t_DIS
t_OHDE
t_DIH
(Note 2)
t_DIS
Driven
by XA
Note: The processor can prefetch from one to eight words.
Figure 8. Burst Code Fetch on 16-Bit Bus
SU01131
1999 Sep 24
30