msm63188a Oki Semiconductor, msm63188a Datasheet - Page 28

• Manufacturer Part Number: msm63188a
• Description: 4-bit Microcontroller With Built-in 1024-dot Matrix Lcd Drivers And Melody Circuit Msm63188a4-bit Microcontroller With Built-in 1024-dot Matrix Lcd Drivers And Melody Circuit, Operating At 0.9 V Min.
• Manufacturer: Oki Semiconductor

¡ Semiconductor
AC Characteristics (External Memory Interface)
(V
specified)
(1) Reading from External Memory
AC characteristics timing
("H" level = 4.0 V, "L" level = 1.0 V)
(a) When CPU operates at 32.768 kHz
Read Cycle Time
RD Output Delay Time
Output Valid Time
External Memory Output Delay Time
(b) When CPU operates at 2 MHz (V
Read Cycle Time
RD Output Delay Time
Output Valid Time
External Memory Output Delay Time
DD
= 0.9 to 5.5 V, V
System clock
Parameter
Parameter
(A15 - A0)
(D7 - D0)
P7 - P4
PA, P9
(RD)
P8.0
DDH
= 1.8 to 5.5 V, V
Port setup value
Port setup value
Symbol
Symbol
S1
DDH
t
t
t
t
t
t
t
OHA
t
OHA
RC
DO
RC
DO
OE
OE
= 2.7 to 5.5 V)
S2
MOVXB obj, xadr16
SS
= 0 V, V
S1
Condition
Condition
MOVXB obj, [RA]
Address output
DDI
—
—
—
—
—
—
—
—
S2
t
OE
= 5.0 V, Ta = –20 to +70 C unless otherwise
t
t
Input data
RC
DO
S1
Port setup value
S2
Min.
Min.
1.0
—
—
—
—
—
—
—
t
Port setup value
OHA
Typ.
Typ.
61.0
—
—
—
—
—
—
—
5 V (V
0 V (V
5 V (V
0 V (V
5 V (V
0 V (V
Max.
Max.
100
100
150
MSM63188A
5.0
5.0
5.0
—
—
DDI
SS
DDI
SS
DDI
SS
)
)
)
)
)
)
Unit
Unit
28/32
ms
ms
ms
ms
ms
ns
ns
ns