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參數(shù)資料
| 型號： | Z86L70 |
| 廠商： | ZiLOG, Inc. |
| 英文描述： | IR/Low-Voltage Microcontroller |
| 中文描述： | 紅外/低電壓微控制器 |
| 文件頁數(shù)： | 42/61頁 |
| 文件大?。?/td> | 349K |
| 代理商： | Z86L70 |
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Z86L70/71/75/C71
IR/Low-Voltage Microcontroller
Zilog
1-42
P R E L I M I N A R Y
DS97LVO0500
FUNCTIONAL DESCRIPTION
(Continued)
HALT.
HALT turns off the internal CPU clock, but not the
XTAL oscillation. The counter/timers and external inter-
rupts IRQ0, IRQ1, IRQ2, IRQ3, and IRQ4 remain active.
The devices are recovered by interrupts, either externally
or internally generated. An interrupt request must be exe-
cuted (enabled) to exit HALT Mode. After the interrupt ser-
vice routine, the program continues from the instruction af-
ter the HALT.
STOP.
This instruction turns off the internal clock and ex-
ternal crystal oscillation and reduces the standby current
to 10
μ
A or less. STOP Mode is terminated only by a reset,
such as WDT time-out, POR, SMR, or external reset. This
causes the processor to restart the application program at
address 000CH. In order to enter STOP (or HALT) mode,
it is necessary to first flush the instruction pipeline to avoid
suspending execution in mid-instruction. To do this, the
user must execute a NOP (opcode = FFH) immediately be-
fore the appropriate sleep instruction, i.e.,
FF
6F
NOP
STOP
or
NOP
HALT
; clear the pipeline
; enter STOP Mode
FF
7F
; clear the pipeline
; enter HALT Mode
Port Configuration Register
(PCON). The PCON regis-
ter configures the comparator output on Port 3. It is locat-
ed in the expanded register file at Bank F, location 00 (Fig-
ure 32).
Figure 32. Port Configuration Register (PCON)
(Write Only)
Reserved (Must be 1)
D7
D6
D5
D4 D3
D2
D1
D0
PCON (FH) 00H
Comparator Output Port 3
0 P34,Standard Output*
1 P34,Comparator Output
* Default Setting After Reset
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