Sonic Alert msm80154s, msm83c154s, msm85c154hvs Figure 4-73 Restart from hard power down mode by reset (internal ROM mode)

MSM80C154S/83C154S/85C154HVS
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Figure 4-73 Restart from hard power down mode by reset (internal ROM mode)
S1 S2 S3 S4 S5 S6
M1 → M2
S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6
M1
S1 S2 S3 S4 S5 S6
M1
XTAL1 1
0
ALE 1
0
PSEN 1
0
PORT 0 1
0
PORT 1 1
0
PORT 2 1
0
PORT 3 1
0
IOCON-bit 0 1
0
*RESET 1
0
EXECUTE CYCLERESET CYCLE
M1 → M2
CPU RESET CONTROL 1
0
PORT DATA=1 PORT DATA=1 PORT DATA=1
FLOATING
PORT FLOATING PORT FLOATING PORT FLOATING PORT FLOATING
HARD POWER DOWN MODE
HPDI[P3.5] 1
0
PCON-bit 6 1
0