Z86E04 Datasheet, PDF (41/44 Pages) Zilog, Inc. – CMOS Z8 OTP MICROCONTROLLERS

Zilog
Z8 CONTROL REGISTERS
R241 TMR
D7 D6 D5 D4 D3 D2 D1 D0
0 No Function
1 Load T0
0 Disable T0 Count
1 Enable T0 Count
0 No Function
1 Load T1
0 Disable T1 Count
1 Enable T1 Count
TIN Modes
00 External Clock Input
01 Gate Input
10 Trigger Input
(Non-retriggerable)
11 Trigger Input
(Retriggerable)
Reserved (Must be 0)
Figure 24. Timer Mode Register (F1_H: Read/Write)
R242 T1
D7 D6 D5 D4 D3 D2 D1 D0
T1 Initial Value
(When Written)
(Range 1-256 Decimal
01-00 HEX)
T1 Current Value
(When READ)
Figure 25. Counter Timer 1 Register (F2_H: Read/Write)
R243 PRE1
D7 D6 D5 D4 D3 D2 D1 D0
Count Mode
0 = T1 Single Pass
1 = T1 Modulo N
Clock Source
1 = T1 Internal
0 = T1 External Timing Input
(T _IN) Mode
Prescaler Modulo
(Range: 1-64 Decimal
01-00 HEX)
Figure 26. Prescaler 1 Register (F3_H: Write Only)
Z86E04/E08
CMOS Z8 OTP Microcontrollers
R244 T0
1
D7 D6 D5 D4 D3 D2 D1 D0
T0 Initial Value
(When Written)
(Range: 1-256 Decimal
01-00 HEX)
T0 Current Value
(When READ)
Figure 27. Counter/Timer 0 Register
(F4_H: Read/Write)
R245 PRE0
D7 D6 D5 D4 D3 D2 D1 D0
Count Mode
0 T0 Single Pass
1 T0 Modulo N
Reserved (Must be 0)
Prescaler Modulo
(Range: 1-64 Decimal
01-00 HEX)
Figure 28. Prescaler 0 Register (F5_H: Write Only)
R246 P2M
D7 D6 D5 D4 D3 D2 D1 D0
P2 ₇ - P20 I/O Definition
0 Defines Bit as OUTPUT
1 Defines Bit as INPUT
Figure 29. Port 2 Mode Register (F6_H: Write Only)
R247 P3M
D7 D6 D5 D4 D3 D2 D1 D0
0 Port 2 Open-Drain
1 Port 2 Push-pull
Port 3 Inputs
0 Digital Mode
1 Analog Mode
Reserved (Must be 0)
Figure 30. Port 3 Mode Register (F7_H: Write Only)
DS97Z8X1104
PRELIMINARY
41