Z86L0408PSC ZILOG [Zilog, Inc.], Z86L0408PSC Datasheet - Page 22

• Manufacturer Part Number: Z86L0408PSC
• Description: Z8 8-Bit Cost-Effective Microcontrollers
• Manufacturer: ZILOG [Zilog, Inc.]

Z86L04/L08
Z8 8-Bit Cost-Effective Microcontrollers
Z8 CONTROL REGISTERS
22
Figure 19. Counter Timer 1 Register (f2
R246 P2M
R242 T1
R243 PRE1
D7 D6
D7 D6 D5 D4 D3 D2 D1 D0
R241 TMR
Figure 18. Timer Mode Register (F1
D7 D6 D5 D4 D3 D2 D1 D0
Figure 21. Port 2 Mode Register (F6
D7 D6 D5 D4 D3 D2 D1 D0
Figure 20. Prescaler1 Register (F3
D5
D4 D3
D2 D1
D0
P2
T Initial Value
(When Written)
(Range 1-256 Decimal
01-00 HEX)
T Current Value
(When READ)
Count Mode
0 Defines Bit as OUTPUT
1 Defines Bit as INPUT
0 Disable T Count
1 Enable T Count
Reserved
(Must be 0)
0 No Function
1 Load T 1
T
00 External Clock Input
01 Gate Input
10 Trigger Input
11 Trigger Input
1
1
1 T
Clock Source
Prescaler Modulo
(Range: 1-64 Decimal
01-00 HEX)
0 Disable T Count
1 Enable T Count
Reserved (Must be 0.)
0 T
1 T Internal
0 T External Timing Input
IN
7
- P2
Modes
(Non-retriggerable)
(Retriggerable)
1
1
1
1
Modulo
(T ) Mode
Single Pass
0
IN
I/O Definition
H
H
H
0
0
: Write Only)
: Read/Write)
1
1
: Write Only)
H
:Read/Write)
P R E L I M I N A R Y
R248 P01M
R247 P3M
R249 IPR
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
Figure 22. Port 3 Mode Register (F7
D7 D6 D5 D4 D3 D2 D1 D0
Figure 23. Port 0 and 1 Mode Register
Figure 24. Interrupt Priority Register
(F8
(F9
H
H
: Write Only)
: Write Only)
P0
Reserved (Must be 1.)
Reserved (Must be 0.)
00 = Output
01 = Input
3
Reserved (Must be 0.)
0 Port 2 Open-Drain
1 Port 2 Push-pull
Port 3 Inputs
0 Digital Mode
1 Analog Mode
Interrupt Group Priority
IRQ1, IRQ4 Priority (Group C)
IRQ0, IRQ2 Priority (Group B)
IRQ3, IRQ5 Priority (Group A)
Reserved (Must be 0)
-P0
000 Reserved
001 C > A > B
010 A > B > C
011 A > C > B
100 B > C > A
101 C > B > A
110 B > A > C
111 Reserved
0 IRQ1 > IRQ4
1 IRQ4 > IRQ1
0 IRQ2 > IRQ0
1 IRQ0 > IRQ2
0 IRQ5 > IRQ3
1 IRQ3 > IRQ5
0
Mode
H
: Write Only)
DS97LVO0901
Zilog