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參數資料
| 型號： | MC68332GVFC20 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-Bit Modular Microcontroller |
| 中文描述： | 32-BIT, 20.97 MHz, MICROCONTROLLER, PQFP132 |
| 封裝： | PLASTIC, QFP-132 |
| 文件頁數： | 20/88頁 |
| 文件大小： | 446K |
| 代理商： | MC68332GVFC20 |
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MOTOROLA
20
MC68332
MC68332TS/D
3.2.2 System Protection Control Register
The system protection control register controls system monitor functions, software watchdog clock
prescaling, and bus monitor timing. This register can be written only once following power-on or reset,
but can be read at any time.
SWE — Software Watchdog Enable
0 = Software watchdog disabled
1 = Software watchdog enabled
SWP — Software Watchdog Prescale
This bit controls the value of the software watchdog prescaler.
0 = Software watchdog clock not prescaled
1 = Software watchdog clock prescaled by 512
SWT[1:0] — Software Watchdog Timing
This field selects the divide ratio used to establish software watchdog time-out period. The following ta-
ble gives the ratio for each combination of SWP and SWT bits.
HME — Halt Monitor Enable
0 = Disable halt monitor function
1 = Enable halt monitor function
BME — Bus Monitor External Enable
0 = Disable bus monitor function for an internal to external bus cycle.
1 = Enable bus monitor function for an internal to external bus cycle.
BMT[1:0] — Bus Monitor Timing
This field selects a bus monitor time-out period as shown in the following table.
SYPCR
—System Protection Control Register
$YFFA21
15
8
7
6
5
4
3
2
1
0
NOT USED
SWE
SWP
SWT
HME
BME
BMT
RESET:
1
MODCLK
0
0
0
0
0
0
SWP
0
SWT
00
Ratio
2
9
0
01
2
11
0
10
2
13
0
11
2
15
1
00
2
18
1
01
2
20
1
10
2
22
1
11
2
24
BMT
00
01
10
11
Bus Monitor Time-out Period
64 System Clocks
32 System Clocks
16 System Clocks
8 System Clocks
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相關代理商/技術參數 |
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| MC68332GVFC25 | 制造商:Rochester Electronics LLC 功能描述:32BIT MCU,2KRAM,TPU,QSM - Bulk |
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| MC68332GVFV20 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller |
| MC68332GVPV16 | 制造商:Rochester Electronics LLC 功能描述:32BIT MCU,2KRAM,TPU,QSM - Bulk |
| MC68332MFC16 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller |
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