
Epson Research and Development
Page 53
Vancouver Design Center
Hardware Functional Specification
S1D13706
Issue Date: 01/11/13
X31B-A-001-08
1.
The MC68EZ328 cannot support the MCLK = BCLK
÷
3 and MCLK = BCLK
÷
4 settings without DTACK.
2.
t12 is the delay from when data is placed on the bus until the data is latched into the write buffer.
Table 6-13: Motorola DragonBall Interface without DTACK Timing
Symbol
Parameter
MC68EZ328
MC68VZ328
Unit
2.0V
3.3V
2.0V
3.3V
Min
Max
Min
Max
Min
Max
Min
Max
f
CLKO
Bus Clock frequency
16
16
20
33
MHz
T
CLKO
Bus Clock period
1/f
CLKO
1/f
CLKO
1/f
CLKO
1/f
CLKO
ns
t1
Clock pulse width high
28.1
28.1
22.5
13.6
ns
t2
Clock pulse width low
28.1
28.1
22.5
13.6
ns
t3
A[16:1] setup 1st CLKO when CSX = 0 and
either UWE/LWE or OE = 0
0
0
0
0
ns
t4
A[16:1] hold from CSX rising edge
0
0
0
0
ns
t5a
CSX asserted for MCLK = BCLK
(CPU wait state register should be programmed
to 4 wait states)
8
8
8
8
T
CLKO
t5b
CSX asserted for MCLK = BCLK
÷
2
(CPU wait state register should be programmed
to 6 wait states)
11
11
11
11
T
CLKO
t5c
CSX asserted for MCLK = BCLK
÷
3
(CPU wait state register should be programmed
to 10 wait states)
—
Note 1
—
Note 1
13
13
T
CLKO
t5d
CSX asserted for MCLK = BCLK
÷
4
(CPU wait state register should be programmed
to 12 wait states)
—
Note 1
—
Note 1
17
17
T
CLKO
t6
CSX setup to CLKO rising edge
0
0
0
0
ns
t7
CSX rising edge setup to CLKO rising edge
0
0
0
0
ns
t8
UWE/LWE setup to CLKO rising edge
1
0
1
0
ns
t9
UWE/LWE rising edge to CSX rising edge
0
0
0
0
ns
t10
OE setup to CLKO rising edge
1
1
1
1
ns
t11
OE hold from CSX rising edge
0
0
0
0
ns
t12
D[15:0] setup to 3rd CLKO after CSX, UWE/LWE
asserted (write cycle) (see note 2)
1
0
1
0
ns
t13
CSX rising edge to D[15:0] output Hi-Z (write
cycle)
0
0
0
0
ns
t14
Falling edge of OE to D[15:0] driven (read cycle)
4
30
3
15
4
30
3
15
ns
t15a
1st CLKO rising edge after OE and CSX
asserted low to D[15:0] valid for MCLK = BCLK
(read cycle)
5.5T
CLKO
+ 4
5.5T
CLKO
+ 20
5.5T
CLKO
+ 4
5.5T
CLKO
+ 20
ns
t15b
1st CLKO rising edge after OE and CSX
asserted low to D[15:0] valid for MCLK = BCLK
÷
2 (read cycle)
8T
CLKO
+
19
8.5T
CLKO
+ 20
8T
CLKO
+
19
8.5T
CLKO
+ 20
ns
t15c
1st CLKO rising edge after OE and CSX
asserted low to D[15:0] valid for MCLK = BCLK
÷
3 (read cycle)
9.5T
CLKO
+ 17
10.5T
CLKO
+ 20
9.5T
CLKO
+ 17
10.5T
CLKO
+ 20
ns
t15d
1st CLKO rising edge after OE and CSX
asserted low to D[15:0] valid for MCLK = BCLK
÷
4 (read cycle)
13T
CLKO
+ 9
14.5T
CLKO
+ 20
13T
CLKO
+ 9
14.5T
CLKO
+ 20
ns
t16
CLKO rising edge to D[15:0] output Hi-Z
(read cycle)
4
21
2
12
4
21
2
12
ns