SPMC68CK338CPV14 datasheet(22/133 Pages) FREESCALE

22 / 133 page

MOTOROLA

MC68CK338

MC68CK338TS/D

3.4 System Protection Block

System protection includes a bus monitor, a halt monitor, a spurious interrupt monitor, and a software

watchdog timer. These functions reduce the number of external components required for complete sys-

tem control. Figure 9 shows the system protection block.

Figure 9 System Protection Block

3.4.1 System Protection Control Register

The system protection control register controls the software watchdog timer, bus monitor, and halt

monitor. 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

SYPCR — System Protection Control Register

$YFFA21

NOT USED

SWE

SWP

SWT[1:0]

HME

BME

BMT

RESET:

MODCLK

SYS PROTECT BLOCK

MODULE CONFIGURATION

AND TEST

RESET STATUS

HALT MONITOR

BUS MONITOR

SPURIOUS INTERRUPT MONITOR

SOFTWARE WATCHDOG TIMER

PERIODIC INTERRUPT TIMER

PRESCALER

CLOCK

IRQ[7:1]

BERR

RESET REQUEST

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

SPMC68CK338CPV14 Datasheet(PDF) 22 Page - Freescale Semiconductor, Inc

SPMC68CK338CPV14 Datasheet(HTML) 22 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL