參數(shù)資料
型號: TMS370
廠商: Texas Instruments, Inc.
英文描述: RADIO FREQUENCY I DENTIFICATION SYSTEMS
中文描述: 射頻我擠密系統(tǒng)
文件頁數(shù): 24/54頁
文件大?。?/td> 785K
代理商: TMS370
TMS370Cx9x
8-BIT MICROCONTROLLER
SPNS036B – JANUARY 1996 – REVISED FEBRUARY 1997
24
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
timer 1 module (continued)
Hard watchdog configuration for mask-ROM device only (see Figure 9)
Eight different WD overflow rates ranging from 26.2 ms to 3.35 s at 5-MHz SYSCLK
A WD reset key (WDRST) register is used to clear the watchdog counter (WDCNTR) when a correct
value is written.
Generates a system reset if an incorrect value is written to the watchdog reset key or if the counter
overflows.
Automatic activation of the WD timer upon power-up reset
INT1 is enabled as nonmaskable interrupt during low-power modes
A WD overflow flag (WD OVRFL INT FLAG) bit that indicates whether the WD timer initiated a system
reset.
16-Bit
Watchdog Counter
Reset
Prescaler
Clock
Watchdog Reset Key
WD OVRFL
TAP SEL
System Reset
T1CTL1.7
WDRST.7-0
WDCNTR.15-0
T1CTL2.5
WD OVRFL
INT FLAG
Figure 9. Hard Watchdog
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