STK14EC16-BF15 SIMTEK [Simtek Corporation], STK14EC16-BF15 Datasheet - Page 21

• Manufacturer Part Number: STK14EC16-BF15
• Description: 256Kx16 AutoStore nvSRAM
• Manufacturer: SIMTEK [Simtek Corporation]

Document Control #ML0061 Rev 1.1
Document Revision History
Preliminary
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 26mA
– 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 3: added new 48 FBGA information, bock diagram, and package diagram; added
– page 4: added thermal characteristics. In the DC Characteristics table, revised values for
– page 6: in SRAM Read Cycles #1 & #2 table, revised description for t
– page 7: in SRAM Write Cycles, added symbol #3.
– page 8: added new SRAM Write Cycle #3. In AutoStore/Power-Up Recall table, changed
– page 9: in Software-Controlled Store/Recall Cycle table, revised values for
– page 11: in Mode Selection table, changed column to A
– page 12: in Auto-Store Operation, deleted line about V
– page 13: under Hardware Store (HSB) Operation, revised first paragraph to read “The
–
– page 16: in Ordering Information, Lead Finish, replaced “Sn (Matte Tin) RoHS Compliant”
– page 17: in Ordering Codes, added ordering information for 48 FBGA and added access
pin descriptions for pins E, LB, UB, and W.
I
revised V
changed Symbol #2 to
diagramand changed title to add G controlled.
max value for #27 (t
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).” Also, added “B = Plastic 48-pin FBGA (Fine
times column.
cc2
Pitch Ball Grid Array)” to Finish.
page 14: added best practices section.
, I
Simtek Confidential
cc4
, I
CAP
SB
, V
notes. Added “(except HSB)” to notes for Output Logic “1” Voltage.
IH
21
, and V
STORE
t
ELEH
) to 12.5. Revised AutoStore/Power-Up Recall section.
CAP
for Read Cycle Time; updated SRAM Read Cycle #2 timing
;and changed Industrial Max Value of V
17
CAP
-A
0
. In the values in this column,
pin being driven to 5V by a
STK14EC16
ELQX
CAP
and t
to 180 and
EHQZ
t
RECALL
and
;