UT1750AR12WCC(2003) Ver la hoja de datos (PDF) - Aeroflex UTMC

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UT1750AR12WCC
(Rev.:2003)

RadHard RISC Microprocessor

Aeroflex UTMC 

FUNCTIONAL PINOUT

Legend for TYPE and ACTIVE fields:

TO = TTL output

TI = TTL input

TUI = TTL input (pull-up)

TDI = TTL input (pull-down)

TTO = Three-state TTL output

TTB = Three-state TTL bidirectional

CO = CMOS output

OSC = Oscillator input to a Pierce Oscillator inverter

AH = Active High

AL = Active Low

OSCILLATOR AND CLOCK SIGNALS

PIN NAME

OSCIN

OSCOUT

SYSCLK

PIN NUMBER

FLTPK PGA

50

P14

51

P15

52

M14

TYPE

OSC

ACTIVE

--

CO

--

DESCRIPTION

Oscillator Input. A 50% duty cycle crystal-drive input for

driving the UT1750AR.

Oscillator Output. A 50% duty cycle, single-phase clock

output at the same frequency as the OSCIN input.

TO

--

System Output. The buffered equivalent of the OSCOUT

signal.

PROCESSOR STATUS

PIN NAME

NUI1

PIN NUMBER

FLTPK PGA

129

H2

TYPE ACTIVE

TI

--

DESCRIPTION

Not used input 1. Internal UTMC use only. Tie either high

or low.

NUI2

44

P12

TUI

--

Not used input 2. Internal UTMC use only. Tie low.

NUO3

M1750

STATE1

126

G3

TTO

--

Not used output 3. Internal UTMC use only. NUO3 enter

high impedance state when the UT1750AR is in the test

mode (TEST=0)

45

N11

TDI

AH

Mode Select RISC/1750. A high on M1750 places the

UT1750AR into the MIL-STD-1750A emulation mode.

A low on M1750 places the UT1750AR into the RISC

mode. It is tied to an internal pull-down resistor.

54

N15 TTO

--

Processor State. This signal indicates the internal state of

the UT1750AR. A low on STATE1 indicates the

UT1750AR is executing a new RISC instruction. A high

on STATE1 indicates the UT1750AR is fetching a RISC

instruction. STATE1 enters a high-impedance state when

the UT1750AR is in the test mode (TEST=0).

4

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