mc68307ad Freescale Semiconductor, Inc, mc68307ad Datasheet - Page 22

• Manufacturer Part Number: mc68307ad
• Description: Integrated Multiple-bus Processor
• Manufacturer: Freescale Semiconductor, Inc

PRELIMINARY AC TIMING SPECIFICATIONS
22
(V
CC
Num
14A
20A
29A
11
12
13
14
15
17
18
21
22
25
26
27
28
47
20
23
29
30
31
32
33
34
35
36
37
38
39
46
53
9
6
7
8
a
= 5.0V
b
a
b
b
b
c
a
b
c
b
b
d
b
d
b
c
Clock low to address valid
Clock high to address, data bus high impedance (maximum)
Clock high to address (minimum)
Clock high to AS, CSx, LDS, UDS asserted
Address valid to AS, CSx, LDS, UDS asserted (read) / AS, CSx asserted
(write)
Clock low to AS, CSx, LDS, UDS negated
LDS, UDS width asserted
Clock high to R/W high (read)
Clock high to R/W low (write)
Address valid to R/W low (write)
R/W low to LDS, UDS asserted (write)
Clock low to data-out valid (write)
Data-out valid to LDS,UDS asserted (write)
Data-in valid to clock low (setup time on read)
DTACK asserted to data-in valid (setup time)
HALT and RESET input transition time
Clock high to BG asserted
Clock high to BG negated
BR asserted to BG asserted
BR negated to BG negated
BGACK asserted to BG asserted
BG asserted to control, address, data bus high impedance (AS, CSx
negated)
BG width negated
BGACK width low
Asynchronous input setup time
Data-out hold from clock high
AS, CSx, LDS, UDS negated to address, FC invalid
AS, CSx, (and LDS, UDS read) width asserted
AS, CSx, LDS, UDS width negated
AS, CSx, LDS, UDS negated to R/W invalid
AS, CSx, asserted to R/W low (write)
AS, CSx, LDS, UDS negated to data-out invalid (write)
AS, CSx, LDS, UDS negated to DTACK negated (asynchronous hold)
AS, CSx, LDS, UDS negated to data-in invalid (hold time on read)
AS, CSx, LDS, UDS negated to data-in high impedance
AS, CSx, LDS, UDS negated to BR negated
0.5V or 3.3Vdc
0.3V; GND = 0Vdc; T
MC68307 TECHNICAL INFORMATION
Characteristic
A
= T
L
to T
H
) (See Figures 8–10)
Min
240
100
120
1.5
1.5
1.5
1.5
1.5
30
30
30
—
60
30
30
10
—
10
8.33 MHz
—
—
—
—
—
0
3
3
0
0
0
0
0
0
0
0
0
0
3.3V
Max
100
220
180
100
300
100
3.5
3.5
3.5
60
60
60
60
60
20
60
40
40
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Min
120
16.67 MHz
1.5
1.5
1.5
1.5
1.5
15
15
50
60
15
30
15
15
—
—
—
—
—
—
—
0
3
3
0
0
0
5
0
0
0
0
0
0
5
0
5V
MOTOROLA
Max
110
150
3.5
3.5
3.5
30
50
30
30
30
30
10
30
90
50
20
20
50
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Unit
Clks
Clks
Clks
Clks
Clks
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns