¡ Semiconductor
ML63512A/63514A
AC Characteristics (Serial Interface, Serial Port)
(V = 0.9 to 5.5 V, V
= 1.8 to 5.5 V, V = 0 V, V = 0.9 to 5.5 V, Ta = –20 to +70°C unless
DDI
DD
DDH
SS
otherwise specified)
(1) Synchronous Communication
Min.
Typ.
Max.
Parameter
Symbol
Condition
Unit
TXC/RXC Input Fall Time
TXC/RXC Input Rise Time
tf
tr
—
—
—
—
—
—
1.0
1.0
ms
ms
TXC/RXC Input "L" Level
Pulse Width
tCWL
tCWH
—
0.8
0.8
—
—
—
—
ms
ms
TXC/RXC Input "H" Level
Pulse Width
—
—
TXC/RXC Input Cycle Time
tCYC
2.0
—
—
—
—
ms
ms
tCYC1(O)
CPU operating at 32.768 kHz
CPU operating at 2 MHz
VDD = VDDH = 2.7 to 5.5 V
Output load capacitance 10 pF
—
30.5
TXC/RXC Output Cycle Time
tCYC2(O)
—
0.5
—
ms
TXD Output Delay Time
RXD Input Setup Time
RXD Input Hold Time
tDDR
tDS
—
0.5
0.8
—
—
—
0.4
—
—
ms
ms
ms
tDH
—
Synchronous communication timing
("H" level = 4.0 V, "L" level = 1.0 V)
tCYC
TXC (P3.1)/
RXC (P3.2)
VDD (5.0 V)
VSS
tr
tf
tCWH
tCWL
tDDR
tDDR
TXD (P3.3)
VDD (5.0 V)
VSS
tDS
tDH
tDS
VDD (5.0 V)
VSS
RXD (P3.0)
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