XA-H3 NXP Semiconductors, XA-H3 Datasheet - Page 20

• Manufacturer Part Number: XA-H3
• 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

Philips Semiconductors
1999 Sep 24
CMOS 16-bit highly integrated microcontroller
NOTE:
The 16-bit wide RAM does not need the A0 pin from the processor. During byte writes to the RAM, the A0 value will cause
either BLE or BHE pin to go active from the XA-H3, but not to both. For all Word Writes, Word Reads, Code Fetches, and
Byte Reads, both BLE and BHE will go active.
XA-H3
D15–D0
A19–A0
BHE
CS5
CS4
CS3
CS2
CS0
CS1
BLE
WE
OE
Figure 4. Typical System Bus Configuration
20
A16–A0
D7–D0
A15–A1
D15–D0
CS
WE
OE
A16–A0
D7–D0
CS
BLE
BHE
A15–A1
D15–D0
OE
WE
I/O Chip or Memory
I/O Chip or Memory
I/O Chip or Memory
I/O Chip or Memory
32 k x 16 SRAM
ROM or Flash
Preliminary specification
128 k x 8
SU01239
XA-H3