Datasheet

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SBAS203J − MARCH 2002 − REVISED JANUARY 2008

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Power-Down Control Register (PDCON)

7 6 5 4 3 2 1 0 Reset Value

SFR F1h 0 0 0 PDPWM PDADC PDWDT PDST PDSPI 1Fh

Turning peripheral modules off puts the MSC1210 in the lowest power mode.

PDPWM Pulse Width Module Control.

bit 4 0 = PWM On

1 = PWM Power Down

PDADC ADC Control.

bit 3 0 = ADC On

1 = ADC, V

REF

, and summation registers are powered down.

PDWDT Watchdog Timer Control.

bit 2 0 = Watchdog Timer On

1 = Watchdog Timer Power Down

PDST System Timer Control.

bit 1 0 = System Timer On

1 = System Timer Power Down

PDSPI SPI System Control.

bit 0 0 = SPI System On

1 = SPI System Power Down

PSEN/ALE Select (PASEL)

7 6 5 4 3 2 1 0 Reset Value

SFR F2h 0 0 PSEN2 PSEN1 PSEN0 0 ALE1 ALE0 00h

PSEN2−0 PSEN Mode Select.

bits 5−3

PSEN2 PSEN1 PSEN0

0 0 x PSEN

0 1 x CLK

1 0 x ADC

MODCLK

1 1 0 LOW

1 1 1 HIGH

ALE1−0 ALE Mode Select.

bits 1−0

ALE1 ALE0

0 x ALE

1 0 LOW

1 1 HIGH

NOTE: For power-saving purposes, it is recommended that the PSEN and ALE pins be set to low or high mode when

external memory is not used.