Z80185 Datasheet, PDF (88/95 Pages) Zilog, Inc. – SMART PERIPHERAL CONTROLLERS

Zilog
PRELIMINARY
Z80185/Z80195
SMART PERIPHERAL CONTROLLERS
Addr: E4h (Ch 0)
E5h (Ch 1)
E6h (Ch 2)
E7h (Ch 3)
D7 D6 D5 D4 D3 D2 D1 D0
Control or Vector
0 Vector
1 Control Word
Reset
0 Continued Operation
1 Software Reset
Time Constant
0 No Time Constant Follows
1 Time Constant Follows
Mode
CCW6
0
0
1
1
CCW3
0
1
0
1
Timer Mode (Auto Start)
Timer Mode CLK/TRG Pulse Starts
Classic Counter Mode
Long Counter Mode
CLK/TRG Edge Selection
0 Selects Falling Edge
1 Selects Rising Edge
Prescaler Value
1 Value of 256
0 Value of 16
Interrupt
1 Enables Interrupt
0 Disables Interrupt
Figure 89. CTC Channel Control Word
88
DS971850301