MC14469PDS [MOTOROLA]

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型号：	MC14469PDS
厂家：	MOTOROLA
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by MC14469/D

SEMICONDUCTOR TECHNICAL DATA

CMOS

P SUFFIX

PLASTIC DIP

CASE 711

The MC14469 receives one or two 11–bit words in a serial data stream. One

of the incoming words contains the address and when the address matches, the

MC14469 then transmits information in two 11–bit word data streams. Each of

the transmitted words contains eight data bits, an even parity bit, and start and

stop bits.

FN SUFFIX

PLCC PACKAGE

CASE 777

The received word contains seven address bits with the address of the

MC14469 set on seven pins. Therefore, 2 or 128 units can be interconnected

in simplex or full–duplex data transmission. In addition to the address received,

seven command bits may be received for general–purpose data or control use.

The MC14469 finds application in transmitting data from remote analog–to–

digital converters, remote MPUs, or remote digital transducers to the master

computer or MPU.

ORDERING INFORMATION

MC14469P

Plastic DIP

MC14469FN

PLCC Package

•

Supply Voltage Range: 4.5 V to 18 V

Low Quiescent Current: 75 µA Maximum @ 5 V, 25°C

Guaranteed Data Rates to 4800 Baud @ 5 V, to 9600 Baud @ 12 V

Receive — Serial to Parallel

Transmit — Parallel to Parallel

•

Transmit and Receive Simultaneously in Full Duplex

Crystal or Resonator Operation for On–Chip Oscillator

See Application Note AN806A

Chip Complexity: 1200 FETs or 300 Equivalent Gates

PIN ASSIGNMENTS

P SUFFIX

FN SUFFIX

OSC1

OSC2

RESET

1 44 43 42 41 40

VAP

SEND

ID0

ID1

ID2

ID3

ID4

VAP

SEND

ID0

ID1

ID2

ID3

ID4

ID5

ID6

ID7

18 19 20 21 22 23 24 25 26 27 28

NC = NO CONNECTION

TRO

Motorola, Inc. 1995

MOTOROLA

MC14469

BLOCK DIAGRAM

RECEIVE

(A0 – A6)

(C0 – C6)

ADDRESS

COMMAND DATA

STROBE

ADDRESS CONTROL

AND DATA COMPARATOR

COMMAND

LATCHES

CLOCK

COMPARE

RVAL

RECEIVE

DATA

STATIC SHIFT REGISTER

(RI)

CLOCK

COMMAND

STROBE (CS)

RECEIVE

DATA

STROBE

TIMING AND CONTROL

AND PARITY CHECK

RECEIVE DATA

STROBE ENABLE

SEND ENABLE

LATCH (SEL)

VALID ADDRESS

PULSE (VAP)

TRANSMIT

(ID0 – ID7)

(S0 – S7)

INPUT DATA

STATUS

LATCHES

STATUS STROBE

CLOCK

STATIC SHIFT REGISTER

LOAD

TRANSMIT

DATA (TRO)

OUTPUT

LOGIC

SELECT

SEND

CONTROL AND PARITY

GENERATOR

SEND ENABLE

STATUS

STROBE

DATA RATE CLOCK

RVAL

CLOCKS

DATA RATE CLOCK

OSC1

OSC2

CLOCK

GENERATOR

CLOCK

OSCILLATOR

RECEIVE DATA STROBE

RECEIVE DATA STROBE ENABLE

MC14469

MOTOROLA

MAXIMUM RATINGS (Voltages referenced to V

)

This device contains circuitry to protect the

inputs against damage due to high static volt-

ages or electric fields; however, it is advised that

normalprecautionsbetakentoavoidapplication

of any voltage higher than maximum rated

voltages to this high–impedance circuit. For

Rating

DC Supply Voltage

Symbol

Value

Unit

– 0.5 to + 18

Input Voltage, All Inputs

– 0.5 to V

+ 0.5

DC Current Drain per Pin

Operating Temperature Range

Storage Temperature Range

°C

proper operation it is recommended that V and

– 40 to + 85

be constrained to the range V

≤ (V or

SS in

out

) ≤ V

stg

– 65 to + 150

out DD

Unused inputs must always be tied to an

appropriate logic voltage level (e.g., either V

or V ).

ELECTRICAL CHARACTERISTICS (Voltages referenced to V

)

– 40°C

25°C

85°C

Characteristic

Symbol

Min

Max

Min

Max

Min

Max

Unit

Output Voltage

= V

or 0

“0” Level

“1” Level

5.0

—

0.05

—

0.05

—

0.05

= 0 or V

5.0

4.95

9.95

14.95

—

4.95

9.95

14.95

—

4.95

9.95

14.95

—

Input Voltage (Except OSC1)

= 4.5 or 0.5 V

= 9.0 or 1.0 V

= 13.5 or 1.5 V

“0” Level

“1” Level

5.0

—

1.5

3.0

4.0

—

1.5

3.0

4.0

—

1.5

3.0

4.0

= 0.5 or 4.5 V

= 1.0 or 9.0 V

= 1.5 or 13.5 V

5.0

3.5

7.0

—

3.5

7.0

—

3.5

7.0

—

Output Drive Current (Except OSC2)

= 2.5 V

= 4.6 V

= 9.5 V

= 13.5 V

Source

Sink

5.0

– 1.0

– 0.2

– 0.5

– 1.4

—

– 0.8

– 0.16

– 0.4

– 1.2

—

– 0.6

– 0.12

– 0.3

– 1.0

—

= 0.4 V

= 0.5 V

= 1.5 V

5.0

0.52

1.3

3.6

—

0.44

1.1

3.0

—

0.36

0.9

2.4

—

Output Drive Current (OSC2 Only)

= 2.5 V

= 4.6 V

= 9.5 V

= 13.5 V

Source

Sink

5.0

– 0.19

– 0.04

– 0.09

– 0.29

—

– 0.16

– 0.035

– 0.08

– 0.27

—

– 0.13

– 0.03

– 0.06

– 0.2

—

= 0.4 V

= 0.5 V

= 1.5 V

5.0

0.1

0.17

0.5

—

0.085

0.14

0.42

—

0.07

0.1

0.3

—

OSC Frequency*

4.5

400

800

365

730

310

620

kHz

OSC

Input Current

—

± 0.3

120

—

± 0.3

100

7.5

—

8.0

—

± 1.0

µA

Pull–Up Current (A0 – A6, ID0 – ID7)

Input Capacitance (V = 0)

—

Quiescent Current (Per Package)

5.0

—

150

300

—

150

300

—

565

1125

2250

Supply Voltage

—

+ 4.5

+ 18

+ 4.5

+ 18

+ 4.5

+ 18

* 310 kHz at 85°C guarantees 4800 baud; 620 kHz at 85°C guarantees 9600 baud.

MOTOROLA

MC14469

RECEIVE DATA (RI)

ADDRESS

COMMAND

MC14469

PIN DESIGNATION

ADDRESS

IDENTIFIER

(HIGH LOGIC LEVEL)

COMMAND

IDENTIFIER

(LOW LOGIC LEVEL)

C0 C1 C2 C3 C4 C5 C6

D0 D1 D2 D3 D4 D5 D6

A0 A1 A2 A3 A4 A5 A6

MC6850

PIN DESIGNATION D0 D1 D2 D3 D4 D5 D6

TRANSMIT DATA (TRO)

INPUT DATA

STATUS

MC14469

PIN DESIGNATION

ID0 ID1 ID2 ID3 ID4 ID5 ID6 ID7

S0 S1 S2 S3 S4 S5 S6 S7

D0 D1 D2 D3 D4 D5 D6 D7

MC6850

PIN DESIGNATION

D0 D1 D2 D3 D4 D5 D6 D7

ID0 to ID7 = MC14469 IDENTIFICATION CODE

S0 to S7 = MC14469 STATUS CODE

A0 to A6 = ADDRESS BITS

C0 to C6 = COMMAND BITS

D0 to D7 = ACIA BUS BITS

ST = START BIT

P = PARITY BIT

SP = STOP BIT

Figure 1. Data Format and Corresponding Data Position and Pins for MC14469 and MC6850

ADDRESS

COMMAND

RECEIVER INPUT (RI)

VALID ADDRESS PULSE

(VAP)

INTERNAL VALID

ADDRESS LATCH

(VAL)

INTERNAL SEND

ENABLE LATCH

(SEL)

COMMAND STROBE

OUTPUT (CS)

SEND INPUT

(SEND)

X X

TRANSMIT OUT

(TRO)

STATUS

Figure 2. Typical Receive/Send Cycle

MC14469

MOTOROLA

VAP

PIN DESCRIPTIONS

Valid Address Pulse

A0 – A6

This is the output for the valid address pulse upon receipt

of a matched incoming address.

Address Inputs

These inputs are the address setting pins which contain

the address match for the received signal. Pins A0 – A6 have

on–chip pull–up resistors.

Positive Power Supply

C0 – C6

Command Word

This pin is the package positive power supply connection.

This pin may range from + 4.5 V to + 18 V with respect to

These pins are the readout of the general–purpose com-

mand word which is the second word of the received signal.

Command Strobe

Negative Power Supply

This is the output for the command strobe signifying a valid

set of command data (C0 – C6). The pulse width is one oscil-

lator cycle. For example, when a 307.2 kHz ceramic resona-

tor is used, the pulse width is approximately 3 µs.

This pin is the negative power supply connection. Normally

this pin is system ground.

OPERATING CHARACTERISTICS

ID0 – ID7

Input Data Pins

The receipt of a start bit on the receive input (RI) line

causes the receive clock to start at a frequency equal to that

of the oscillator divided by 64. All received data is strobed in

at the center of a receive clock period. The start bit is fol-

lowed by eight data bits. Seven of the bits are compared

against states of the address of the particular circuit (A0 –

A6). Address is latched 31 clock cycles after the end of the

start bit of the incoming address. The eighth bit signifies an

address word “1” or a command word “0”. Next, a parity bit is

received and checked by the internal logic for even parity.

Finally a stop bit is received. At the completion of the cycle if

the address matches, a valid address pulse (VAP) occurs.

Immediately following the address word, a command word is

received. It also contains a start bit, eight data bits, even par-

ity bit, and a stop bit. The eight data bits are composed of a

seven–bit command, and a “0” which indicates a command

word. At the end of the command word a command strobe

pulse (CS) occurs.

These pins contain the input data for the first eight bits of

data to be transmitted. Pins ID0 – ID7 have on–chip pull–up

resistors.

OSC1, OSC2

Oscillator Input and Oscillator Output

These pins are the oscillator input and output (see

Figure 3).

RESET

Reset

When this pin is pulled low for a minimum of 700 ns, the

circuit is reset and ready for operation.

Receive Input

This is the receive input pin.

A positive transition on the send input initiates the transmit

sequence. Send must occur within seven bit times of CS.

Again the transmitted data is made up of two eleven–bit

words, i.e., address and command words. The data portion

of the first word is made up from input data inputs (ID0 –

ID7), and the data for the second word from second input

data (S0 – S7) inputs. The data on inputs ID0 – ID7 is latched

one clock before the falling edge of the start bit. The data on

inputs S0 – S7 is latched on the rising edge of the start bit.

The transmitted signal is the inversion of the received signal,

which allows the use of an inverting amplifier to drive the

lines. TRO begins either 1/2 or 1–1/2 bit times after send, de-

pending where send occurs.

S0 – S7

Second or Status Input Data

These pins contain the input data for the second eight bits

of data to be transmitted.

SEND

Send

This pin accepts the send command after receipt of an

address.

TRO

Transmit Register Output Signal

This pin transmits the outgoing signal. Note that it is in-

verted from the incoming signal. It must go through one

stage of inversion if it is to drive another MC14469.

The oscillator can be crystal controlled or ceramic reso-

nator controlled for required accuracy. OSC1 can be driven

from an external oscillator (see Figure 3).

MOTOROLA

MC14469

INTERNAL

OSCILLATOR

DATA

OSC1

OSC2

15 M

Ω

1.0 kΩ

DATA LINE

GROUND LINE

NOTE: For externally generated clock,

drive OSC1, float OSC2.

X1 = Ceramic Resonator: 307.2 kHz ± 1 kHz for 4800 baud rate.

C1 and C2 are sized per the ceramic resonator supplier’s

recommendation.

RI TRO

1.0 µF

MC14469

Ceramic Resonator Suppliers:*

1. Morgan Matroc, Inc., Bedford, OH, 216/232–8600

2. Radio Materials Co., Attica, IN, 317/762–2491

* Motorola cannot recommend one supplier over another and

in no way suggests that this is a complete listing of ceramic

resonator suppliers.

Figure 3. Oscillator Circuit

Figure 4. Rectified Power from Data Lines Circuit

CHANNEL

SELECT

CHANNEL,

START

CONVERSION

END

CONVERSION

SEND

MC14469

ANALOG

INPUTS

DIGITAL

OUTPUTS

8–CHANNEL A/D

CONVERTER ASSEMBLY

Figure 5. A–D Converter Interface

MC14469

MOTOROLA

V+

1 k

10 k

TRO

10 k

TRO

ID7

MC14469

127

MC6850

ACIA

MC14469

A0,ID0

A1,ID1

A2,ID2

A3,ID3

A4,ID4

A5,ID5

A6,ID6

A1,ID1

A2,ID2

A3,ID3

A4,ID4

A5,ID5

A6,ID6

UART

ADDRESS

1111111

ADDRESS

0000001

SEND

ADDRESS

0000000

REMOTE MC14469

STATIONS

MASTER

STATION

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.

Figure 6. Single Line, Simplex Data Transmission

V+

1 k

10 k

TRO

10 k

TRO

MC6850

ACIA

MC14469

ADDRESS

0000001

MC14469

ADDRESS

0000000

ADDRESS

1111111

MC14469

127

UART

VAP

SEND

VAP

SEND

VAP

SEND

MASTER

STATION

REMOTE MC14469 STATIONS

Figure 7. Double Line, Full Duplex Data Transmission

MOTOROLA

MC14469

RESET

CLEAR COMMAND LATCH

RESET SEL

RESET

RESET VAL

INITIALIZE

TRANSMITTER

INITIALIZE RECEIVER

MSB

= 1?

SEND

=1?

VAL

SET?

VAL

SET?

SEL

SET?

SEL

SET?

COMMAND

VALID?

RESET VAL

AND SEL

LATCH

COMMAND

ADDRESS

VALID?

TRANSMISSION

COMPLETE?

ISSUE

SET

VAL

LATCH

STATUS

ISSUE

VAP

TRANSMIT

SET

SEL

TRANSMIT

STATUS

8 BIT

TIMES?

RESET

SEL

Figure 8. Flow Chart of MC14469 Operation

MC14469

MOTOROLA

PACKAGE DIMENSIONS

P SUFFIX

PLASTIC DIP

CASE 711–03

NOTES:

1. POSITIONAL TOLERANCE OF LEADS (D), SHALL

BE WITHIN 0.25 (0.010) AT MAXIMUM MATERIAL

CONDITION, IN RELATION TO SEATING PLANE

AND EACH OTHER.

2. DIMENSION L TO CENTER OF LEADS WHEN

FORMED PARALLEL.

3. DIMENSION B DOES NOT INCLUDE MOLD FLASH.

MILLIMETERS

INCHES

DIM

MIN

51.69

13.72

3.94

0.36

1.02

MAX

52.45

14.22

5.08

0.56

1.52

MIN

MAX

2.065

0.560

0.200

0.022

0.060

2.035

0.540

0.155

0.014

0.040

2.54 BSC

0.100 BSC

1.65

0.20

2.92

15.24 BSC

2.16

0.38

3.43

0.065

0.008

0.115

0.600 BSC

0.085

0.015

0.135

SEATING

PLANE

1.02

0.040

0.51

0.020

MOTOROLA

MC14469

FN SUFFIX

PLCC PACKAGE

CASE 777–02

0.007(0.180)

L–M

–N–

Y BRK

0.007(0.180)

L–M

–M–

–L–

0.010 (0.25)

L–M

VIEW D–D

0.007(0.180)

L–M

0.007(0.180)

L–M

0.004 (0.10)

SEATING

PLANE

–T–

VIEW S

0.010 (0.25)

L–M

0.007(0.180)

L–M

VIEW S

NOTES:

1. DATUMS –L–, –M–, AND –N– ARE DETERMINED

WHERE TOP OF LEAD SHOULDER EXITS

PLASTIC BODY AT MOLD PARTING LINE.

2. DIMENSION G1, TRUE POSITION TO BE

MEASURED AT DATUM –T–, SEATING PLANE.

3. DIMENSIONS R AND U DO NOT INCLUDE MOLD

FLASH. ALLOWABLE MOLD FLASH IS 0.010

(0.25) PER SIDE.

4. DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982.

5. CONTROLLING DIMENSION: INCH.

6. THE PACKAGE TOP MAY BE SMALLER THAN

THE PACKAGE BOTTOM BY UP TO 0.012

(0.300). DIMENSIONS R AND U ARE

INCHES

MILLIMETERS

DIM

MIN

MAX

0.695

0.180

0.110

0.019

MIN

17.40

4.20

MAX

17.65

4.57

0.685

0.165

0.090

0.013

2.29

2.79

0.33

0.48

0.050 BSC

1.27 BSC

0.026

0.020

0.025

0.650

0.042

–––

0.032

–––

0.656

0.048

0.056

0.020

0.66

0.51

0.64

16.51

1.07

–––

0.81

–––

16.66

1.21

1.42

0.50

DETERMINED AT THE OUTERMOST

EXTREMES OF THE PLASTIC BODY

EXCLUSIVE OF MOLD FLASH, TIE BAR BURRS,

GATE BURRS AND INTERLEAD FLASH, BUT

INCLUDING ANY MISMATCH BETWEEN THE

TOP AND BOTTOM OF THE PLASTIC BODY.

7. DIMENSION H DOES NOT INCLUDE DAMBAR

PROTRUSION OR INTRUSION. THE DAMBAR

PROTRUSION(S) SHALL NOT CAUSE THE H

DIMENSION TO BE GREATER THAN 0.037

(0.940). THE DAMBAR INTRUSION(S) SHALL

NOT CAUSE THE H DIMENSION TO BE

SMALLER THAN 0.025 (0.635).

0.610

0.040

0.630

–––

15.50

1.02

16.00

–––

MC14469

MOTOROLA

This page intentionally left blank.

MOTOROLA

MC14469

Motorolareserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representationorguaranteeregarding

the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit,

andspecifically disclaims any and all liability, includingwithoutlimitationconsequentialorincidentaldamages. “Typical” parameters can and do vary in different

applications. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. Motorola does

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associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part.

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JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, Toshikatsu Otsuki,

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51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298

MC14469/D

◊

MC14469

MOTOROLA

MC14469PDS [MOTOROLA]

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