參數(shù)資料
型號(hào): Z86K18
廠商: ZiLOG, Inc.
英文描述: CMOS Z8 8-Bit MCU Keyboard Controllers
中文描述: Z8的CMOS 8位微控制器鍵盤(pán)控制器
文件頁(yè)數(shù): 19/24頁(yè)
文件大?。?/td> 170K
代理商: Z86K18
Z86K13/K14/K15/K16/K17/K18
CMOS Z8 8-Bit MCU Keyboard Controllers
Zilog
DS97KEY0204
P R E L I M I N A R Y
19
1
Z8
CONTROL REGISTER DIAGRAMS
Figure 21. Timer Mode Register
(F1
H
: Read/Write)
Counter/Timer 0 Register
Figure 22. (F4
H
: Read/Write)
Prescaler 0 Register
Figure 23. (F5
H
: Write Only)
D7
D6
D5
D4
D3
D2
D1
D0
0 = Disable T0 Count
1 = Enable T0 Count
0 = No Function
1 = Load T0
R241 TMR
Reserved (Must be 0)
D7 D6
D5
D4
D3
D2
D1
D0
T0 Initial Value
(When WRITE)
(Range: 1-256 Decimal
01-00 HEX)
T0 Current Value
(When READ)
R244 T0
D7
D6
D5
D4
D3
D2
D1
D0
Count Mode
0 = T0
1 = T0
Reserved (Must be 0)
Prescaler Modulo
(Range: 1-64 Decimal
01-00 HEX)
R245 PRE0
Port 2 Mode Register
Figure 24. (F6
H
: Write Only)
Port 2 Open Drain Mode Register
Figure 25. (F7
H
: Write Only)
Figure 26. Interrupt Priority Register
(F9
H
: Write Only)
D7
D6
D5
D4
D3
D2
D1
D0
P24-P27 I/O Definition
0 Defines Bit as OUTPUT
1 Defines Bit as INPUT
R246 P2M
Reserved
D7
D6
D5
D4
D3
D2
D1
D0
0 Port (24-27) Open-Drain
1 Port (24-27) Push-Pull
Reserved (Must be 0)
R247 P3M
D7
D6
D5
D4
D3
D2
D1
D0
Interrupt Group Priority
Reserved = 000
C > A > B = 001
A > B > C = 010
A > C > B = 011
B > C > A = 100
C > B > A = 101
B > A > C = 110
Reserved = 111
IRQ1, IRQ4 Priority (Group C)
0 = IRQ1 > IRQ4
1 = IRQ4 > IRQ1
Reserved
IRQ0, IRQ2 Priority (Group B)
0 = IRQ2 > IRQ0
1 = IRQ0 > IRQ2
Reserved (Must be 0)
R249 IPR
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