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W65C134S Schematic ( PDF Datasheet ) - The Western Design Center

Teilenummer W65C134S
Beschreibung Microcomputer
Hersteller The Western Design Center
Logo The Western Design Center Logo 




Gesamt 30 Seiten
W65C134S Datasheet, Funktion
The Western Design Center, Inc.
May 2003
W65C134S Data Sheet
W65C134S
DATA SHEET
www.DataSheet.co.kr
© The Western Design Center, Inc., 2003. All rights reserved
WDC
Datasheet pdf - http://www.DataSheet4U.net/






W65C134S Datasheet, Funktion
The Western Design Center, Inc.
BCR7
0
0
1
1
Table 1-1 BCR7 and BE Control
BE W65C134S Configuration
0 Internal ROM External Processor (DMA)
1 Internal ROM Internal Processor
0 External ROM External Processor (DMA)
1 External ROM Internal Processor
W65C134S Data Sheet
1.5 Chip Select Enable Register PCS3)($0007)
1.5.1
1.5.2
1.5.3
PCS is the Port 3 Chip Select Register. The PCS allows each individual chip select to be active or
non-active. When PCS30-PCS37 are equal to a "1", then CS0B to CS7B will be active. When
CS1B is active, the defined memory space for CS3B and/or CS6B is reduced. It is reduced by the
memory space 0100-011F for CS1B. When CS2B is active, the defined memory space for CS3B
and/or CS6B is reduced. It is reduced by the memory space 0120-013F for CS2B.
CS7B is automatically enabled when BCR7=1.
The W65C134S will use the internal RAM as stack when PCS33 and PCS36 are disabled. If
PCS33 or PCS36 are enabled then the off chip stack is used.
7
CS7B
6
CS6B
5
CS5B
www.DataSheet.co.kr
4
CS4B
3
CS3B
2
CS2B
1
CS1B
0
CS0B
Figure 1-3 Chip Select Enable Register
The Western Design Center, Inc.
W65C134S Data Sheet
6
Datasheet pdf - http://www.DataSheet4U.net/

6 Page









W65C134S pdf, datenblatt
The Western Design Center, Inc.
W65C134S Data Sheet
IER2 bits 0-7
0=Disable Interrupt
1=Enable Interrupt
IER2
76
54321
0
($0009)
↓↓ ↓↓↓↓↓ ↓
Priority Logic
↑↑ ↑↑↑↑↑ ↑
IFR2
76 54321
0
($0008)
PE54 Positive Edge Interrupt
PE55 Positive Edge Interrupt
PE56 Positive Edge Interrupt
NE57 Negative Edge Interrupt
www.DataSheet.co.kr
Timer 1 Edge Interrupt
Timer 2 Edge Interrupt
IRQ1B Low Level Interrupt
IRQ2B Low Level Interrupt
Figure 1-6 Interrupt Enable Register Two (IER2) ($0009)
and Interrupt Flag Register Two (IFR2) ($0008)
The Western Design Center, Inc.
W65C134S Data Sheet
12
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