ATAR080 datasheet(54/68 Pages) ATMEL

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ATAR080

4675D–4BMCU–12/04

Combination Mode 5: Bi-phase Modulation 2

SSI mode 1:

8-bit shift register internal data output (SO) to the Timer 2

modulator stage

Timer 2 mode 3:

8-bit compare counter and 4-bit prescaler

Timer 2 output mode 4:

Modulator 2 of Timer 2 modulates the SSI data output to

Bi-phase code

The 4-bit stage can be used as prescaler for the SSI to generate the stop signal for Mod-

ulator 2. The SSI has a special mode to supply the prescaler via the shift-clock. The

control output signal (OMSK) of the SSI is used as a stop signal for the modulator. Fig-

ure 57 is an example for a 13-bit Bi-phase telegram:

Figure 57. Bi-phase Modulation 2

000

Counter 2/1 = Compare Register 2/1 (= 5)

Bit 7 Bit 6

Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

SCLI

Buffer full

SIR

MSM

Timer 2

Mode 3

SCL

2/1

OMSK

T2O

Absolute Maximum Ratings

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating

only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this

specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

All inputs and outputs are protected against high electrostatic voltages or electric fields. However, precautions to minimize the build-up of

electrostatic charges during handling are recommended. Reliability of operation is enhanced if unused inputs are connected to an

appropriate logic voltage level (e.g., V

DD).

Parameters

Symbol

Value

Unit

Supply voltage

-0.3 to + 6.5

Input voltage (on any pin)

SS -0.3 ≤VIN ≤VDD +0.3

Output short circuit duration

short

Indefinite

Operating temperature range

amb

-40 to +85

° C

Storage temperature range

stg

-40 to +130

° C

Thermal resistance (SSO20)

thJA

140

K/W

Soldering temperature (t

≤10 s)

sld

260

° C

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