MC14469

MOTOROLA

7

Figure 6. Single Line, Simplex Data Transmission

A6,ID6

A5,ID5

A4,ID4

A3,ID3

A2,ID2

A1,ID1

A6,ID6

A5,ID5

A4,ID4

A3,ID3

A2,ID2

A1,ID1

A0,ID0

ADDRESS

0000000

S7

S7

S7

ID7

ID7

ID7

TRO

TRO

TRO

CS

CS

CS

REMOTE MC14469

STATIONS

ADDRESS

1111111

ADDRESS

0000001

TRO

10 k

10 k

10 k

SEND

RI

SEND

RI

SEND

RI

MC14469

127

MC14469

1

MC14469

0

MASTER

STATION

MC6850

ACIA

OR

UART

TRO

RI

10 k

1 k

V+

NOTE: For simplex operation the ID7 must be tied high, S7 must be tied

low, and the 7–bit ID must be the same as the 7–bit address (or set

to some unused address) to prevent erroneous responses.

VSS

VSS

VDD

VDD

VDD

VSS

VSS

A6

A5

A4

A3

A2

A1

A0

A6

A5

A4

A3

A2

A1

TRO

TRO

TRO

REMOTE MC14469 STATIONS

ADDRESS

0000000

ADDRESS

1111111

ADDRESS

0000001

TRO

1 k

10 k

10 k

10 k

VDD

SEND

VAP

VSS

RI

VDD

SEND

VAP

VSS

RI

VDD

SEND

VAP

VSS

RI

MC14469

127

MC14469

1

MC14469

0

VDD

MASTER

STATION

MC6850

ACIA

OR

UART

VSS

TRO

RI

10 k

1 k

V+

Figure 7. Double Line, Full Duplex Data Transmission