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MC68307V Datasheet, PDF (31/34 Pages) Motorola, Inc – Technical Summary Integrated Multiple-Bus Processor
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PRELIMINARY M-BUS INTERFACE INPUT SIGNAL TIMING
(VCC = 5.0V ± 0.5V or 3.3Vdc ± 0.3V; GND = 0Vdc; TA = TL to TH) (See Figure 19)
3.3 V
5V
Num
Characteristic
8 MHz
16.67 MHz
Unit
Min Max Min Max
1 Start condition hold time
2
—
2
—
Clk
2 Clock low period
4.7
—
4.7
—
Clk
3 SDA/SCL rise time
4 Data hold time
—
2
—
1
µs
0
—
0
—
Clk
5 SDA/SCL fall time
6 Clock high period
—
600
—
300
ns
4
—
4
—
Clk
7 Data setup time
8 Start condition setup time (for repeated start condition only)
500
—
250
—
µs
2
—
2
—
Clk
9 Stop condition setup time
2
—
2
—
Clk
PRELIMINARY M-BUS INTERFACE OUTPUT SIGNAL TIMING
(VCC = 5.0V ± 0.5V or 3.3Vdc ± 0.3V; GND = 0Vdc; TA = TL to TH) (See Figure 19)
3.3 V
5V
Num
Characteristic
8 MHz
16.67 MHz
Unit
Min Max Min Max
1 Start condition hold time
8
—
8
—
Clk
2 Clock low period
11
—
11
—
Clk
3 SDA/SCL rise time
4 Data hold time
—
2
—
1
µs
0
2
0
2
Clk
5 SDA/SCL fall time
6 Clock high period
—
600
—
300
ns
11
—
11
—
Clk
7 Data setup time
(Spec — (Spec —
ns
2) x Clk
2) x Clk
8 Start condition setup time (for repeated start condition only)
9 Stop condition setup time
20
—
10
—
Clk
20
—
10
—
Clk
SDA
1
4
7
8
9
SCL
3
2
5
6
Figure 19. M-Bus Interface Input/Output Signal Timing
MOTOROLA
MC68307 TECHNICAL INFORMATION
31
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