Sonic Alert msm85c154hvs, msm83c154s, msm80154s user manual 148, CPU pin details in idle mode

MSM80C154S/83C154S/85C154HVS

Table 4-23 CPU pin details in idle mode

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	Address 8 output
P2.1	Port data output	Address 9 output
P2.2	Port data output	Address 10 output
P2.3	Port data output	Address 11 output
P2.4	Port data output	Address 12 output
P2.5	Port data output	Address 13 output
P2.6	Port data output	Address 14 output
P2.7	Port data output	Address 15 output
PSEN	“1” level output	“1” level output
ALE	“1” level output	“1” 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	+2.2~+6 [V]	+2.2~+6 [V]

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