msm63188a Oki Semiconductor, msm63188a Datasheet - Page 29

• 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
(2) Writing to External Memory
AC characteristics timing
("H" level = 4.0 V, "L" level = 1.0 V)
(a) When CPU operates at 32.768 kHz
Write Cycle Time
Address Setup Time
Write Time
Write Recovery Time
Data Setup Time
Data Hold Time
(b) When CPU operates at 2 MHz (V
Write Cycle Time
Address Setup Time
Write Time
Write Recovery Time
Data Setup Time
Data Hold Time
System clock
Parameter
Parameter
(A15 - A0)
(D7 - D0)
P7 - P4
PA, P9
(WR)
P8.1
Port setup value
Port setup value
Symbol
Symbol
DDH
S1
MOVXB [RA], obj or MOVXB xadr16, obj
t
t
t
t
t
t
t
t
t
t
t
WR
t
WR
WC
WC
DS
DH
DS
DH
AS
AS
W
W
= 2.7 to 5.5 V)
S2
S1
Condition
Condition
Address output
—
—
—
—
—
—
—
—
—
—
—
—
t
AS
S2
Output data
t
DS
t
WC
t
W
S1
t
DH
t
WR
Port setup value
Min.
Min.
Port setup value
S2
1.0
0.4
0.2
0.2
0.7
0.2
—
—
—
—
—
—
Typ.
Typ.
61.0
30.5
15.3
15.3
45.8
15.3
—
—
—
—
—
—
5 V (V
0 V (V
5 V (V
0 V (V
5 V (V
0 V (V
Max.
Max.
MSM63188A
—
—
—
—
—
—
—
—
—
—
—
—
DDI
SS
DDI
SS
DDI
SS
)
)
)
)
)
)
Unit
Unit
29/32
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms