User's Manual

INTERNAL SPECIFICATIONS
157
Figure 4-61 Soft power down mode setting time chart (external ROM mode)
S1 S2 S3 S4 S5 S6
M1 or M2 M1
XTAL1
1 0
ALE
1 0
PSEN PORT 0
1 0
PORT 1
1 0
PORT 2
1 0
PORT 3
1 0
W-PCON
1 0
*PCON-bit 1
1 0
SOFT POWER DOWN MODE
S6
PORT DATA PORT DATA
FLOATING
PD SET CYCLE
PCLPCL PCL
PCH PCH
1 0
PCH
PORT DATA
1 0
IOCON-bit 0
PORT DATA PORT DATA PORT DATA
*ALF=“0”