7

80C32E

4149M–AERO–06/04

Exit from power-down by either reset or external interrupt does not affect the internal

RAM content.

Note:

If idle mode is activated with power-down mode (IDL and PD bits set), the exit sequence

is unchanged, when execution is vectored to interrupt, PD and IDL bits are cleared and

idle mode is not entered.

Table 2. State of Ports During Idle and Power-down Modes

Mode

Program

Memory

ALE

PSEN

PORT0

PORT1

PORT2

PORT3

Idle

External

1

1

Floating

Port Data

Address

Port Data

Power-

down

External

0

0

Floating

Port Data

Port Data

Port Data