Sonic Alert msm83c154s, msm80154s user manual 155, CPU pin details ALF=0 in soft power down mode PD

		INTERNAL SPECIFICATIONS
Table 4-24 CPU pin details (ALF=0) in soft power down mode (PD)
Name	Internal ROM	External ROM
P1.0/T2	Port data output	Port data output
P1.1/T2EX	Port data output	Port data output
P1.2	Port data output	Port data output
P1.3	Port data output	Port data output
P1.4	Port data output	Port data output
P1.5	Port data output	Port data output
P1.6	Port data output	Port data output
P1.7	Port data output	Port data output
RESET	“0” level input	“0” level input
P3.0/RXD	Port data output	Port data output
P3.1/TXD	Port data output	Port data output
P3.2/ INT0	Port data output	Port data output
P3.3/ INT1	Port data output	Port data output
P3.4/ T0	Port data output	Port data output
P3.5/ T1/HPDI	Port data output	Port data output
P3.6/ WR	Port data output	Port data output
P3.7/ RD	Port data output	Port data output
XTAL 2	Oscillator operative	Oscillator operative
XTAL 1	Oscillator operative	Oscillator operative
VSS	0 [V]	0 [V]
P2.0	Port data output	Port data output
P2.1	Port data output	Port data output
P2.2	Port data output	Port data output
P2.3	Port data output	Port data output
P2.4	Port data output	Port data output
P2.5	Port data output	Port data output
P2.6	Port data output	Port data output
P2.7	Port data output	Port data output
PSEN	“0” level output	“0” level output
ALE	“0” level output	“0” level output
EA	“1” level input	“0” level input
P0.7	Port data output	Floating
P0.6	Port data output	Floating
P0.5	Port data output	Floating
P0.4	Port data output	Floating
P0.3	Port data output	Floating
P0.2	Port data output	Floating
P0.1	Port data output	Floating
P0.0	Port data output	Floating
VCC	*+2.0~+6 [V]	*+2.0~+6 [V]

* VCC=+2.0~+6V when internal CPU data is held.

155