¡ Semiconductor
MSM63P180
AC Characteristics (External Memory Interface)
(VDD = 1.45 to 5.5 V, VDDH = 2.7 to 5.5 V, VSS = 0 V, VDDI = 5.0 V, Ta = 0 to +65°C unless otherwise
specified)
(1) Reading from External Memory
(a) When CPU operates at 32.768 kHz
Parameter
Symbol
Read Cycle Time
tRC
RD Output Delay Time
tOE
Output Valid Time
tOHA
External Memory Output Delay Time
tDO
Condition
—
—
—
—
Min. Typ. Max. Unit
— 61.0 —
ms
—
—
5.0
ms
—
—
5.0
ms
—
—
5.0
ms
(b) When CPU operates at 2 MHz (VDDH = 2.9 to 5.5 V)
Parameter
Symbol
Condition
Read Cycle Time
tRC
—
RD Output Delay Time
tOE
—
Output Valid Time
tOHA
—
External Memory Output Delay Time
tDO
—
Min. Typ. Max. Unit
1.0
—
—
ms
—
—
100
ns
—
—
100
ns
—
—
150
ns
AC characteristics timing
("H" level = 4.0 V, "L" level = 1.0 V)
System clock
P7 - P4
(A15 - A0)
P8.0
(RD)
PA, P9
(D7 - D0)
MOVXB obj, xadr16
MOVXB obj, [RA]
S1 S2 S1 S2 S1 S2
Port setup value
tRC
Address output Port setup value
5 V (VDDI)
0 V (VSS)
Port setup value
tOE
Input data
tDO
tOHA
Port setup value
5 V (VDDI)
0 V (VSS)
5 V (VDDI)
0 V (VSS)
26/35