sed1374 ETC-unknow, sed1374 Datasheet - Page 38

• Manufacturer Part Number: sed1374
• Description: Sed1374 Embedded Memory Color Lcd Controller
• Manufacturer: ETC-unknow

Page 30
7.1.3 Motorola M68K #1 Interface Timing
SED1374
X26A-A-001-02
UDS#, LDS#
Symbol
T
f
CLK
t10
t11
DTACK#
CLK
t1
t2
t3
t4
t5
t6
t7
t8
t9
D[15:0]
D[15:0]
A[15:1]
(read)
(write
R/W#
CLK
AS#
CS#
Bus Clock Frequency
Bus Clock period
A[15:1], CS# valid before AS# falling edge
A[15:1], CS# hold from AS# rising edge
AS# low to DTACK# driven high
CLK to DTACK# low
AS# high to DTACK# high
AS# high to DTACK# high impedance
UDS#, LDS# falling edge to D[15:0] valid (write cycle)
D[15:0] hold from AS# rising edge (write cycle)
UDS#, LDS# falling edge to D[15:0] driven (read cycle)
D[15:0] valid to DTACK# falling edge (read cycle)
UDS#, LDS# rising edge to D[15:0] high impedance
INVALID
Hi-Z
Note
T
Hi-Z
CLK
CLK may be turned off (held low) between accesses - see Section 13.5, “Turning Off
BCLK Between Accesses” on page 86
t1
Table 7-3: M68K #1 Bus Timing (MC68000)
Hi-Z
Figure 7-3: M68K #1 Bus Timing (MC68000)
t3
Parameter
t9
t7
t4
VALID
t10
VALID
VALID
1/f
Min
0
0
0
CLK
0
0
Epson Research and Development
t2
t8
t5
Hardware Functional Specification
t11
T
T
Max
t6
33
15
20
15
10
16
CLK
CLK
Vancouver Design Center
Hi-Z
Issue Date: 99/04/29
Units
MHz
Hi-Z
ns
ns
ns
ns
ns
ns
ns
ns
ns
Hi-Z