PC7447AMGH1000LB datasheet(9/44 Pages) ATMEL

9 / 44 page

5387B–HIREL–07/05

PC7447A [Preliminary]

5. Detailed Specification

This specification describes the specific requirements for the microprocessor PC7447A in com-

pliance with Atmel standard screening.

6. Applicable Documents

MIL-STD-883: Test methods and procedures for electronics

MIL-PRF-38535: Appendix A: General specifications for microcircuits

The microcircuits are in accordance with the applicable documents and as specified herein.

6.1

Design and Construction

6.1.1

Terminal Connections

Depending on the package, the terminal connections are as shown in Table 8-1, Table 6-2 and

Figure 4-1.

6.2

Absolute Maximum Ratings

The tables in this section describe the PC7447A DC electrical characteristics. Table 6-1 pro-

vides the absolute maximum ratings

Notes:

1. Functional and tested operating conditions are given in Table 6-2 on page 10. Absolute maximum ratings are stress ratings

only, and functional operation at the maximums is not guaranteed. Stresses beyond those listed may affect device reliability

or cause permanent damage to the device.

2. Caution: VDD/AVDD must not exceed OVDD by more than 1V during normal operation; this limit may be exceeded for a maxi-

mum of 20 ms during the power-on reset and power-down sequences.

3. Caution: OV

DD must not exceed VDD/AVDD by more than 2V during normal operation; this limit may be exceeded for a maxi-

mum of 20 ms during the power-on reset and power-down sequences.

4. BVSEL must be set to 0, such that the bus is in 1.8V mode.

5. BVSEL must be set to HRESET or 1, such that the bus is in 2.5V mode.

6. Caution: VIN must not exceed OVDD by more than 0.3V at any time including during power-on reset.

7. V

IN may overshoot/undershoot to a voltage and for a maximum duration shown in Figure 6-1 on page 10.

Table 6-1.

Absolute Maximum Ratings

(1)

Symbol

Characteristic

Maximum Value

Unit

(2)

Core supply voltage

-0.3 to 1.60

AVDD

(2)

PLL supply voltage

-0.3 to 1.60

(3)(4)

Processor bus supply voltage

BVSEL = 0

-0.3 to 1.95

(3)(5)

BVSEL = HRESET or OV

-0.3 to 2.7

VIN

(6)(7)

Input voltage

Processor bus

-0.3 to OVDD + 0.3

JTAG signals

-0.3 to OV

DD + 0.3

STG

Storage temperature range

-55 to 150

°C

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