參數(shù)資料
型號(hào): Z86L71
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(yè)數(shù): 47/61頁(yè)
文件大?。?/td> 349K
代理商: Z86L71
Z86L70/71/75/C71
Zilog
IR/Low-Voltage Microcontroller
DS97LVO0500
P R E L I M I N A R Y
1-47
1
Watch-Dog Timer Mode Register (WDTMR).
The WDT
is a retriggerable one-shot timer that resets the Z8 if it
reaches its terminal count. The WDT must initially be en-
abled by executing the WDT instruction and refreshed on
subsequent executions of the WDT instruction. The WDT
circuit is driven by an on-board RC oscillator or external
oscillator from the XTAL1 pin. The WDT instruction affects
the Zero (Z), Sign (S), and Overflow (V) flags.
The POR clock source is selected with bit 4 of the WDT
register. Bit 0 and 1 control a tap circuit that determines the
time-out period. Bit 2 determines whether the WDT is ac-
tive during HALT and Bit 3 determines WDT activity during
STOP. Bits 5 through 7 are reserved (Figure 37). This reg-
ister is accessible only during the first 64 processor cycles
(128 XTAL clocks) from the execution of the first instruc-
tion after Power-On-Reset, Watch-Dog Reset, or a Stop-
Mode Recovery (Figure 40). After this point, the register
cannot be modified by any means, intentional or other-
wise. The WDTMR cannot be read and is located in Bank
F of the Expanded Register Group at address location
0FH. It is organized as follows:
Figure 37. Watch-Dog Timer Mode Register
(Write Only)
D7
D6
D5
D4
D3
D2
D1
D0
WDTMR (0F) 0F
WDT TAP INT RC OSC External Clock
00 5 ms 256 TpC
01*
10 20 ms 1024 TpC
11 80 ms 4096 TpC
WDT During HALT
0 OFF
1 ON
*
WDT During STOP
0 OFF
1 ON
*
XTAL1/INT RC Select for WDT
0 On-Chip RC
1 XTAL
Reserved (Must be 0)
* Default Setting After Reset
*
相關(guān)PDF資料
PDF描述
Z86L75 IR/Low-Voltage Microcontroller
Z86C71 IR/Low-Voltage Microcontroller
Z86L72 IR MICROCONTROLLER
Z86C7216FSC IR MICROCONTROLLER
Z86L7208FSC IR MICROCONTROLLER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
Z86L7103ZEM 功能描述:仿真器/模擬器 Z86L71 ICEBOX RoHS:否 制造商:Blackhawk 產(chǎn)品:System Trace Emulators 工具用于評(píng)估:C6000, C5000, C2000, OMAP, DAVINCI, SITARA, TMS470, TMS570, ARM 7/9, ARM Cortex A8/R4/M3 用于:XDS560v2
Z86L72 制造商:ZILOG 制造商全稱:ZILOG 功能描述:IR MICROCONTROLLER
Z86L7208FSC 制造商:ZILOG 制造商全稱:ZILOG 功能描述:IR MICROCONTROLLER
Z86L7208PSC 制造商:ZILOG 制造商全稱:ZILOG 功能描述:IR MICROCONTROLLER
Z86L72-08PSC 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller