XA-H4 NXP Semiconductors, XA-H4 Datasheet - Page 34

The powerful 16-bit XA CPU core and rich feature set make the XA-H3 and XA-H4 devices ideal for high-performance real-time applications such as industrial control and networking

XA-H4

Manufacturer Part Number
XA-H4
Description
The powerful 16-bit XA CPU core and rich feature set make the XA-H3 and XA-H4 devices ideal for high-performance real-time applications such as industrial control and networking
Manufacturer
NXP Semiconductors
Datasheet
Philips Semiconductors
1999 Sep 24
CASL, CASH
Single-chip 16-bit microcontroller
D[15:0]
ClkOut
RAS
OE
CAS (BHE/BLE)
RAS (CS)
A
ClkOut
WE
D
A
Note:
Note.
t
CHAV
t
CHSL
The processor can fetch from one to eight Words (1 Word = 2 bytes)
OE is inactive during all writes.
t
AVSL
t
CHAV
t
CHDV
RAS ADDRESS
t
AVSL
t
RAS ADDRESS
CHSL
t
Figure 13. DRAM Write (on 16-Bit Bus, also 8-Bit Write on 8-Bit Bus)
CHAV
t
CHSL
Figure 12. DRAM FPM (Fast Page Mode) Burst Code Fetch
t
t
CHAH
CHAH
t
CHSL
t
AVSL
t
CHSL
t
AVSL
CAS ADDRESS
Note 1
34
Valid Data
CAS ADDRESS
INSTRUCTION
t
t
CHAH
DIS
t
CHAV
Note 2
t
CHSH
t
CPWH
t
CHSH
CAS ADDRESS +2
t
DIS
t
CHSH
t
CHAH
Preliminary specification
INSTRUCTION
t
CHAH
t
t
CHAV
CHSH
XA-H4
SU01281
SU01282
Note 2

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