XA-H3 Datasheet, PDF (32/36 Pages) NXP Semiconductors – CMOS 16-bit highly integrated microcontroller

Philips Semiconductors
CMOS 16-bit highly integrated microcontroller
Preliminary specification
XA-H3
Clkout
t_CHAV
OE, BLE, CS
D[7:0]
t_CHAV
t_CHAV
t_CHAV
Even Address
Address + 1
Address + 2
Address + 3
t_CHAV
Note 3
t_DIS
t_DIH
Note 2
LS Byte
t_DIS
t_DIH
Note 2
MS Byte
t_DIS
t_DIH
Note 2
LS Byte
t_CHSH
t_DIS
t_DIH
Note 2
MS Byte
Note:
BHE remains high (inactive) for all accesses on an 8-bit bus. A burst code fetch can be
from 1 to 8 words (1 word = 2 bytes), a 2 word fetch is shown here.
Figure 11. Burst Code Fetch on 8-bit bus
Clkout
t_CHAV
A19 – A1
A0
CS
BLE, WE
t_CHSL
t_CHSL
t_AVSL
D7 – D0
Note. OE is inactive during all writes.
t_SHDH
t_SHAH
t_AVSL
t_DVSL
Figure 12. 16-Bit Write on 8-Bit Bus
SU01245
t_CHSH
t_SHAH
SU01246
1999 Sep 24
32