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WESTERN DESIGN CENTER
2.3
Phase 2 Clock Output............................................................................................................... 30
2.4
Clock Inputs, Clock Outputs..................................................................................................... 30
2.5
Bus Enable and RDY Input ..................................................................................................... 31
Figure 2-3 BE Timing Relative to PHI2................................................................................... 31
2.6
Reset Input/Output RESB........................................................................................................ 32
2.7
Positive Power Supply.............................................................................................................. 32
2.8
Internal Logic Ground.............................................................................................................. 32
2.9
I/O Port Pins............................................................................................................................ 32
2.10
Address Bus............................................................................................................................. 33
2.11
Data Bus.................................................................................................................................. 33
2.12
Positive Edge Interrupt inputs................................................................................................... 33
2.13
Negative Edge Interrupt inputs................................................................................................. 33
2.14
Chip Select outputs.................................................................................................................. 33
2.15
Level Sensitive Interrupt Request inputs................................................................................... 34
2.16
Non-Maskable Edge Interrupt Input.......................................................................................... 34
2.17
Asynchronous Receive Input/Transmitter Output...................................................................... 34
2.18
Timer A Input and Output........................................................................................................ 34
2.19
The Serial Interface Bus pins.................................................................................................... 34
W65C134S
March 1, 2000
SECTION 3 TIMING, AC AND DC CHARACTERISTICS................................................................................... 35
3.1
Absolute Maximum Ratings..................................................................................................... 35
Table 3-1 Absolute Maximum Ratings..................................................................................... 35
DC Characteristics................................................................................................................... 36
Table 3-2 DC Characteristics.................................................................................................. 36
AC Characteristics................................................................................................................... 37
Table 3-3 AC Characteristics.................................................................................................. 37
AC Parameters......................................................................................................................... 38
Table 3-4 AC Parameters........................................................................................................ 38
AC Timing Diagram Notes....................................................................................................... 39
AC Timing Diagrams............................................................................................................... 40
Figure 3-1 AC Timing Diagram #1.......................................................................................... 40
Figure 3-2 AC Timing Diagram #2.......................................................................................... 41
Figure 3-3 AC Timing Diagram #3.......................................................................................... 42
Figure 3-4 AC Timing Diagram #4.......................................................................................... 43
Figure 3-5 AC Timing Diagram #5.......................................................................................... 44
SECTION 4 ORDERING INFORMATION......................................................................................................... 45
3.2
3.3
3.4
3.5
3.6
SECTION 5 APPLICATION INFORMATION.................................................................................................... 46
5.1
W65C134S Block Diagrams..................................................................................................... 46
Figure 5-1 W65C134S Block Diagram.................................................................................... 46
Figure 5-2 W65C134S Interrupt Controller Block Diagram..................................................... 47
Figure 5-3 W65C134S Timer 1 and 2 Block Diagram.............................................................. 48
Figure 5-4 W65C134S Timer A and M Block Diagram........................................................... 49
Figure 5-5 Universal Asynchronous Receiver Transmitter Block Diagram................................ 50
Figure 5-6 Serial Interface Bus Block Diagram........................................................................ 51
External ROM Startup with W65C134S Mask ROMs.............................................................. 52
Recommended clock and fclock oscillators................................................................................ 53
Figure 5-7 Oscillator Circuit..................................................................................................... 53
Figure 5-8 Circuit Board Layout for Oscillator Circuit............................................................. 54
5.2
5.3