參數(shù)資料
型號： 12C508
廠商： Microchip Technology Inc.
英文描述： Test Prod Wire; Conductor Size AWG:18; No. Strands x Strand Size:65 x 36; Jacket Color:Gray; Conductor Material:Copper; Jacket Material:Rubber; Leaded Process Compatible:Yes; Number of Conductors:1 RoHS Compliant: Yes
中文描述： 8引腳，8位CMOS微控制器
文件頁數(shù)： 43/113頁
文件大?。?/td> 1604K
代理商： 12C508
1999 Microchip Technology Inc.
DS40139E-page 43
PIC12C5XX
8.6.1
WDT PERIOD
The WDT has a nominal time-out period of 18 ms,
(with no prescaler). If a longer time-out period is
desired, a prescaler with a division ratio of up to 1:128
can be assigned to the WDT (under software control)
by writing to the OPTION register. Thus, a time-out
period of a nominal 2.3 seconds can be realized.
These periods vary with temperature, V
DD
and part-to-
part process variations (see DC specs).
Under worst case conditions (V
DD
= Min., Temperature
= Max., max. WDT prescaler), it may take several
seconds before a WDT time-out occurs.
8.6.2
WDT PROGRAMMING CONSIDERATIONS
The
CLRWDT
instruction clears the WDT and the
postscaler, if assigned to the WDT, and prevents it
from timing out and generating a device RESET.
The
SLEEP
instruction resets the WDT and the
postscaler, if assigned to the WDT. This gives the
maximum SLEEP time before a WDT wake-up reset.
FIGURE 8-12: WATCHDOG TIMER BLOCK DIAGRAM
TABLE 8-6:
SUMMARY OF REGISTERS ASSOCIATED WITH THE WATCHDOG TIMER
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
Power-On
Reset
Value on
All Other
Resets
N/A
OPTION
GPWU
GPPU
T0CS
T0SE
PSA
PS2
PS1
PS0
1111 1111
1111 1111
Legend:
Shaded boxes = Not used by Watchdog Timer,
—
= unimplemented, read as ’0’,
u
= unchanged
1
0
1
0
From Timer0 Clock Source
(Figure 8-5)
To Timer0 (Figure 8-4)
Postscaler
WDT Enable
Configuration Bit
PSA
WDT
Time-out
PS2:PS0
PSA
MUX
8 - to - 1 MUX
M
U
X
Watchdog
Timer
Note: T0CS, T0SE, PSA, PS2:PS0
are bits in the OPTION register.
相關PDF資料
PDF描述
12C508A Hookup/Lead Wire; Conductor Size AWG:18; No. Strands x Strand Size:65 x 36; Jacket Color:White; Conductor Material:Copper; Jacket Material:Rubber; Leaded Process Compatible:Yes; Number of Conductors:1; Outer Diameter:0.144" RoHS Compliant: Yes
12C509 Test Prod Wire; Conductor Size AWG:18; No. Strands x Strand Size:65 x 36; Jacket Color:White; Conductor Material:Copper; Jacket Material:Rubber; Leaded Process Compatible:Yes; Number of Conductors:1 RoHS Compliant: Yes
12C671 Test Prod Wire; Conductor Size AWG:18; No. Strands x Strand Size:65 x 36; Jacket Color:White; Conductor Material:Copper; Jacket Material:Rubber; Leaded Process Compatible:Yes; Number of Conductors:1 RoHS Compliant: Yes
12C672 Test Prod Wire; Conductor Size AWG:18; No. Strands x Strand Size:65 x 36; Jacket Color:Black; Conductor Material:Copper; Jacket Material:Rubber; Leaded Process Compatible:Yes; Number of Conductors:1; Outer Diameter:0.144" RoHS Compliant: Yes
12CE673 HookUp/Lead Wire; Conductor Size AWG:18; No. Strands x Strand Size:65 x 36; Jacket Color:Black; Conductor Material:Copper; Jacket Material:Rubber; Leaded Process Compatible:Yes; Number of Conductors:1; Outer Diameter:0.144" RoHS Compliant: Yes
相關代理商/技術參數(shù)
參數(shù)描述
12C508P 制造商:Motorola Inc 功能描述:
12C5B 制造商:AMPERITE CO INC 功能描述:RELAY;TIME DELAY,12VLTG,CLOSED,,MINI
12C5SB 制造商:Olympic Controls Corporation 功能描述:
12C5T 制造商:OlympicControls Corp/Amperite Co 功能描述:Electromechanical Relay SPST-NC 3A 12VDC 12VAC Through Hole
12C5XB 制造商:OlympicControls Corp/Amperite Co 功能描述:Electromechanical Relay SPST-NC 3A 12VDC 12VAC Panel Mount
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