AT80C32X2 View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
'AT80C32X2' PDF : 55 Pages View PDF
TS8xCx2X2
Exit from power-down by reset redefines all the SFRs, exit from power-down by external
interrupt does no affect the SFRs.
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 15. The State of Ports During Idle and Power-down Modes
Mode
Program
Memory
ALE
PSEN
PORT0
PORT1
PORT2
Idle
Internal
1
1
Port
Data(1)
Port Data Port Data
Idle
External
1
1
Floating Port Data Address
Power
Down
Internal
0
0
Port
Data(1)
Port Data Port Data
Power
Down
External
0
0
Floating Port Data Port Data
Note: 1. Port 0 can force a "zero" level. A "one" will leave port floating.
PORT3
Port Data
Port Data
Port Data
Port Data
27
4184I–8051–02/08
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