Motorola DT128, DG128, 68HC912D60, CMD912x manual Mode Switch, PM12D60

MODE SWITCH

The 3 to 5 position MODE SWITCH on the PM12xxx Module provides an easy method of configuring the HC12 operating Mode and Options from RESET.

NOTE: Expanded Narrow Mode is not available on this board, Expanded Wide operation is required due to the memory application and that any expanded bus operation requires both HC12 I/O ports A and B in any case.

Following are the Mode Switch selections and descriptions:

PM12D60

Default: 1 and 2 ON, 3 - 5 OFF.

MODE	SELECTION	OFF POSITION	ON POSITION
SWITCH	OPTION
1 and 2	Operating Mode	Single Chip Mode	Expanded Wide Mode
3	Port H pull device	Port H Pull-Down	Port H Pull-Up
4	Port G pull device	Port G Pull-Down	Port G Pull-Up
5	Oscillator Select	Ext. 16Mhz Clock	User applied crystal

PM12DG128 / PM12DT128

Default: 1 and 2 ON, 3 OFF

MODE	SELECTION	OFF POSITION	ON POSITION
SWITCH	OPTION
1 and 2	Operating Mode	Single Chip Mode	Expanded Wide Mode
3	Oscillator Select	Ext. 16Mhz Clock	User applied crystal

PM12DP256

Default: 1 - 3 ON, 4 and 5 OFF

MODE	SELECTION	OFF POSITION	ON POSITION
SWITCH	OPTION
1 and 2	Operating Mode	Single Chip Mode	Expanded Wide Mode
3	MODC Selection	Normal Modes	Special / Emulation Mode
4	ROMON Select	Internal Flash ON	Internal Flash OFF
5	Oscillator Select	Ext. 16Mhz Clock	User applied crystal

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