UT8SF2M32MSFA datasheet(4/27 Pages) AEROFLEX

4 / 27 page

36-00-01-006

Ver.

1.9.4

Aeroflex Microelectronics Solutions - HiRel

NAME

DESCRIPTION

TYPE

ZZ “Sleep” Input, Active HIGH: When HIGH, places the device in a non-

time critical “sleep” condition with data integrity preserved. During normal

operation, this pin must be LOW.

Input-Synchronous

SHUTDOWN

Shutdown Input, Active HIGH: When HIGH, places device in shutdown

mode. System clock can be stopped. Memory contents are not retained.

Input-Asynchronous

READY2

Device Ready Output: READY outputs a HIGH when device is available

for normal operations. READY outputs a LOW when requesting an idle

cycle or during power up initialization.

Output-Synchronous

MBE0

MBE1

MBEC

Multiple Bit Error Flags: When LOW data is valid, when HIGH data is

corrupt. Users can monitor either MBE0 and MBE1 or MBEC (combined).

Output-Synchronous

MODE3

Mode Input: Established at power up. Selects the burst order of the device.

When tied to VSS selects linear burst sequence. When tied to VDDQ selects

interleaved burst sequence.

Input-DC

EDACEN

EDAC Enable Input: EDAC is enabled when HIGH. When LOW, allows

for simple package pin disable of EDAC. Device pin internally connected

through a 75kΩ±10% resistor to VDDQ.

Input-DC

SCRUBEN

SCRUB Enable Input: Scrub mode is enabled when HIGH. When LOW,

scrub mode is externally disabled. Device pin internally connected through 1

75kΩ±10% resistor to VDDQ.

Input-DC

EXTRES3

Input Current Reference: Provided for external precision current reference

resister connection.

Input-DC

VDD

Power Supply Inputs to the Core of the Device.

Power Supply

VDDQ

Power Supply for the I/O Circuitry.

I/O Power Supply

VSS

Ground inputs to the core of the device.

Ground

VSSQ

Ground for I/O circuitry

I/O ground

Table 1: Pin Definitions

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