stk14ec8-tf45tr Simtek Corporation, stk14ec8-tf45tr Datasheet - Page 19

• Manufacturer Part Number: stk14ec8-tf45tr
• Description: 512kx8 Autostore Nvsram
• Manufacturer: Simtek Corporation

Document Control #ML0060 Rev 1.1
Preliminary
Document Revision History
SIMTEK STK14EC8 Datasheet, January 2008
Copyright 2008, Simtek Corporation. All rights reserved.
This datasheet may only be printed for the expressed use of Simtek Customers. No part of the datasheet may be reproduced in any other
form or means without the express written permission from Simtek Corporation. The information contained in this publication is believed to be
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right.
Rev
1.0
1.1
Jan, 2008
Date
April 2007
January 2008
Change
Moved to Preliminary from Advance Information
– made clear that nominal supply is 3.3V, not 3.0V (range 2.7V to 3.6V)
– modified language on pin description of HSB and NC.
– changed ISB from 1mA to 2mA.
– changed Icc3 from 8mA to 13mA
– clarified description language of Figure 3
– clarified description language of Software Recall
– clarified description language of Preventing Autostore
– corrected typo on Industrial temp range: -45 to -40
Made the following changes to the document
– page 1: revised block diagram
– page 2: added new 48 FBGA information and added pin descriptions for pins E and W.
– page 3: added thermal characteristics. In the DC Characteristics table, revised values for
– page 5: in SRAM Read Cycles #1 & #2 table, revised parameter description for t
– page 7: in AutoStore/Power-Up Recall table, changed max value for #23 (t
– page 8: in Software-Controlled Store/Recall Cycle table, revised values for
– page 10: in Mode Selection table, changed column to A
– page 11: in Auto-Store Operation, deleted line about V
– page 12: under Hardware Store (HSB) Operation, revised first paragraph to read “The
– page 13: added best practices section.
– page 15: in Ordering Information, Lead Finish, replaced “Sn (Matte Tin) RoHS Compliant”
– page 16: in Ordering Codes, added ordering information for 48 FBGA and added access
Grid Array)” to Finish.
I
revised V
t
Cycle #2 timing diagram and changed title to add G controlled.
revised the notes below the Software-Controlled Store/Recall Cycle diagram.
added a zero after each instance of “0x”; changed AutoStore Enable value to
0x04B46.
charge pump internal to the chip. Also, added Stefan's revised text (italics show revision):
"Refer to the DC CHARACTERISTICS table for the size of the capacitor."
HSB pin has a very resistive pullup...”
with “Nickel/Palladium/Gold (Ni/Pd/Au)”;, added “B = Plastic 48-pin FBGA (Fine Pitch Ball
times column.
cc2
EHQZ
, I
Simtek Confidential
cc4
and changed Symbol #2 to
, I
CAP
SB
, V
notes. Added “(except HSB)” to notes for Output Logic “1”
IH
19
, V
cc
, and V
CAP
; and changed Industrial Max Value of V
t
ELEH
for Read Cycle Time; updated SRAM Read
18
CAP
-A
0
; in the values in this column,
pin being driven to 5V by a
STK14EC8
CAP
STORE
Voltage.
to 180 and
ELQX
) to 12.5.
t
RECALL
and
;