Storage Temperature
Maximum Signal Voltage to Ground
G
Maximum Lead Temperature (10 seconds)
L
Parameter
Flash Data Retention10 Years
Flash Endurance (Write/Erase Cycles)10,000
Normal Operating Conditions
SymbolParameterMinimumMaximumUnits
V
CC
V
IH
V
IL
Power Supply Voltage
Input High Voltage
Input Low Voltage
+4.5+5.5V
+2.2V
+ 0.3V
CC
-0.5+0.8V
Capacitance
(V
= 0V, f = 1MHz, TA = 25°C)
IN
Symbol ParameterMaximumUnits
AD
C
C
C
WE1-4
C
C
A0 – A18 Capacitance
OE
OE Capacitance
F/S Write Enable Capacitance
CE
F/S Chip Enable Capacitance
I/O
I/O0 – I/O31 Capacitance
This parameter is guaranteed by design but not tested
80pF
80pF
30pF
50pF
30pF
DC Characteristics
(VCC = 5.0V, VSS = 0V, Tc = -55°C to +125°C)
ParameterSymConditionsMinMax Units
I
Input Leakage Current
Output Leakage Current
SRAM Operating Supply Current x 32
Mode
I
CC
Standby Current
SRAM Output Low Voltage
SRAM Output High Voltage
Flash Vcc Active Current for Read (1)
Flash Vcc Active Current for Program
or Erase (2)
Flash Output Low Voltage
Flash Output High Voltage
Flash Low Vcc Lock Out Voltage
Notes: 1) The ICC current listed includes both the DC operating current and the frequency dependent component (at 5MHz). The
frequency component typically is less than 2mA/MHz, with OE
erase) is in progress 3) DC test conditions: V
V
V
I
I
V
V
V
IL = 0.3V, VIH = VCC - 0.3V
VCC = Max, VIN=0toV
LI
FCE = SCE = VIH, OE = V
I
LO
V
=0toV
OUT
SCE
x32
I
SB
OL
OH
CC1
CC2
OL
OH1
LKO
= VIL, OE = VIH, f = 5MHz, VCC =
Max, FCE
FCE = SCE = VIH, OE = VIH, f = 5MHz,
= Max
V
CC
IOL = 8 mA, VCC = Min, FCE = V
IOH = -4.0 mA, , VCC = Min, FCE = V
FCE = VIL, OE = VIH, SCE = V
FCE = VIL, OE = VIH, SCE = V
IOL = 12 mA, VCC = Min, SCE = V
IOH = -2.5 mA, , VCC = Min, SCE = V
CC
= V
IH
at VIH 2) ICC active while Embedded Algorithim (program or
CC
IH,
IH
IH
IH
IH
IH
IH
2.4V
0.85 x VCCV
3.24.2V
10µA
10µA
500mA
80mA
0.4V
260mA
300mA
0.45V
Aeroflex Circuit TechnologySCD3851 REV A 5/21/98 Plainview NY (516) 694-6700
2
Page 3
SRAM AC Characteristics
(VCC = 5.0V, VSS= 0V, TC = -55°C to +125°C)
Read Cycle
ParameterSymbol
Read Cycle Time
Address Access Time
Chip Select Access Time
Output Hold from Address Change
Output Enable to Output Valid
Chip Select to Output in Low Z *
Output Enable to Output in Low Z *
Chip Deselect to Output in High Z *
Output Disable to Output in High Z *
* Parameters guaranteed by design but not tested
Write Cycle
Parameter Symbol
Write Cycle Time
Chip Select to End of Write
Address Valid to End of Write
Data Valid to End of Write
Write Pulse Width
Address Setup Time
Output Active from End of Write *
Write to Output in High Z *
Data Hold from Write Time
Address Hold Time
* Parameters guaranteed by design but not tested
t
t
t
ACE
t
t
t
CLZ
t
OLZ
t
CHZ
t
OHZ
t
WC
t
CW
t
AW
t
DW
t
WP
t
t
OW
t
WHZ
t
DH
t
RC
AA
OH
OE
AS
AH
–025
Min Max
–035
Min Max
Units
2535ns
2535ns
2535ns
00ns
1520ns
33ns
00ns
1220ns
1220ns
–025
Min Max
–035
Min Max
Units
2535ns
2025ns
2025ns
1520ns
2025ns
00ns
00ns
1020ns
00ns
00ns
SRAM Truth Table
ModeSCEOESWEData I/OPower
StandbyHXXHigh ZStandby
ReadLLHData OutActive
Output DisableLHHHigh ZActive
WriteLXLData InActive
Aeroflex Circuit TechnologySCD3851 REV A 5/21/98 Plainview NY (516) 694-6700
3
Page 4
Timing Diagrams — SRAM
Read Cycle Timing Diagrams
Read Cycle 1 (SCE = OE = VIL, SWE = VIH)
tRC
A0-18
tAA
tOH
DI/O
Read Cycle 2 (SWE = VIH)
tRC
A0-18
tAA
SCE
OE
DI/O
tCLZ
SEE NOTE
tOLZ
SEE NOTE
High Z
tACE
OE
t
SEE NOTE
Data Valid
Data ValidPrevious Data Valid
tCHZ
t
OHZ
SEE NOTE
Write Cycle Timing Diagrams
Write Cycle (SWE Controlled, OE = VIH)
tWC
A0-18
tAWtAH
tWHZ
tCW
tDW
Data Valid
tWC
tAW
tCW
tWP
tDW
Data Valid
SCE
tAStWP
SWE
DI/O
Write Cycle (SCE
A0-18
tAS
SCE
SWE
DI/O
SEE NOTE
Controlled, OE = VIH )
tOW
tDH
tAH
tDH
UNDEFINED
DON’T CARE
Note: Guaranteed by design, but not tested.
AC Test Circuit
Current Source
IOL
Z ~ 1.5 V (Bipolar Supply)
To Device Under Test
C
L = 50 pF
Current Source
V
OH
I
Input and Output Timing Reference Level1.5V
Notes:
1) V
Z is programmable from -2V to +7V. 2) IOL and IOH programmable from 0 to 16 mA. 3) Tester Impedance
Z
O =75Ω. 4) VZ is typically the midpoint of VOH and VOL. 5) IOL and IOH are adjusted to simulate a typical resistance
load circuit. 6) ATE Tester includes jig capacitance.
Aeroflex Circuit TechnologySCD3851 REV A 5/21/98 Plainview NY (516) 694-6700
4
AC Test Conditions
ParameterTypicalUnits
Input Pulse Level0 – 3.0V
Input Rise and Fall5ns
Page 5
Flash AC Characteristics – Read Only Operations
Parameter
Read Cycle Time
Address Access Time
Chip Enable Access Time
Output Enable to Output Valid
Chip Enable to Output High Z (1)
Output Enable High to Output High Z(1)
Output Hold from Address, CE
Note 1. Guaranteed by design, but not tested
or OE Change, Whichever is First
(Vcc = 5.0V, Vss = 0V, Tc = -55°C to +125°C)
Symbol
JEDEC Stand’d
t
AVAVtRC607090ns
AVQVtACC607090ns
t
ELQVtCE607090ns
t
GLQVtOE303535ns
t
EHQZtDF202020ns
t
GHQZtDF202020ns
t
t
AXQXtOH000ns
–60
Min Max
–70
Min Max
–90
Min Max
Units
Flash AC Characteristics – Write / Erase / Program Operations, FWE Controlled
(Vcc = 5.0V, Vss = 0V, Tc = -55°C to +125°C)
Parameter
Write Cycle Time
Chip Enable Setup Time
Write Enable Pulse Width
Address Setup Time
Data Setup Time
Data Hold Time
Address Hold Time
Write Enable Pulse Width High
Duration of Byte Programming Operation
Sector Erase Time
Read Recovery Time before Write
Vcc Setup Time
Chip Programming Time
Chip Enable Hold Time
Chip Erase Time
1. Toggle and Data Polling only.
Symbol
JEDEC Stand’d
t
AVACtWC607090ns
ELWLtCE000ns
t
WLWHtWP404545ns
t
AVWLtAS000ns
t
DVWHtDS404545ns
t
WHDXtDH000ns
t
WLAXtAH454545ns
t
WHWLtWPH202020ns
t
WHWH114TYP14TYP14TYPµs
t
WHWH2303030Sec
t
tGHWL000µs
VCE505050µs
t
1
OEH
t
WHWH3120120120Sec
t
–60
Min Max
505050Sec
101010ns
–70
Min Max
–90
Min Max
Flash AC Characteristics – Write / Erase / Program Operations, FCE Controlled
(Vcc = 5.0V, Vss = 0V, Tc = -55°C to +125°C)
Parameter
Write Cycle Time
Write Enable Setup Time
Chip Enable Pulse Width
Address Setup Time
Data Setup Time
Data Hold Time
Address Hold Time
Chip Enable Pulse Width High
Duration of Byte Programming
Sector Erase Time
Read Recovery Time
Chip Programming Time
Chip Erase Time
Symbol
JEDEC Stand’d
t
AVACtWC607090ns
WLELtWS000ns
t
ELEHtCP404545ns
t
AVELtAS000ns
t
DVEHtDS404545ns
t
EHDXtDH000ns
t
ELAXtAH454545ns
t
EHELtCPH202020ns
t
WHWH114TYP14TYP14TYPµs
t
WHWH2303030Sec
t
tGHEL000ns
WHWH3120120120Sec
t
–60
Min Max
505050Sec
–70
Min Max
Min Max
–90
Units
Units
Aeroflex Circuit TechnologySCD3851 REV A 5/21/98 Plainview NY (516) 694-6700
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Page 6
AC Waveforms for Flash Memory Read Operations
tRC
AddressesAddresses Stable
tACC
FCE
tDF
OE
FWE
Outputs
Write/Erase/Program
Operation for Flash Memory, F
Addresses
FCE
OE
5555HPA
tWC
tAS
tGHWL
tAH
tOE
WE Controlled
Data
Polling
Output Valid
PA
tOHtCE
High ZHigh Z
tRC
tWP
FWE
Data
5.0V
Notes:
1. PA is the address of the memory location to be programmed.
2. PD is the data to be programmed at byte address.
3. D7 is the 0utput of the complement of the data written to the deviced.
4. Dout is the output of the data written to the device.
5. Figure indicates last two bus cycles of four bus cycle sequence.
Aeroflex Circuit TechnologySCD3851 REV A 5/21/98 Plainview NY (516) 694-6700
tCE
tDS
tWPH
tDH
t
WHWH1
6
D7
tOE
tDF
DOUTPDAOH
tOH
tCE
Page 7
AC Waveforms Chip/Sector
Erase Operations for Flash Memory
AH
t
Data
Polling
Addresses
FCE
OE
FWE
Data
CC
V
5555H
tAS
tGHWL
tWP
tWPH
tCE
tDH
55HAAH80H55H10H/30HAAH
tDS
tVCE
Notes:
1. SA is the sector address for sector erase.
5555H5555HSA2AAAH2AAAH
AC Waveforms for Data Polling
During Embedded Algorithm Operations for Flash Memory
FCE
OE
FWE
tCH
DQ7
DQ0-DQ6
tOEH
tOE
tDF
tCE
tOH
*
DQ
7
DQ7=
Valid Data
tWHWH1 or 2
DQ0–DQ6=Invalid
DQ0–DQ6
Valid Data
tOE
* DQ7=Valid Data (The device has completed the Embedded operation).
High Z
Aeroflex Circuit TechnologySCD3851 REV A 5/21/98 Plainview NY (516) 694-6700
7
Page 8
Write/Erase/Program Operation for Flash Memory, FCE Controlled
Data
Polling
Addresses
FCE
OE
FWE
Data
5.0V
5555H
tWC
PA
tAHtAS
tGHWL
tWS
tCP
tCPH
t
WHWH1
tDH
tDS
Notes:
1. PA is the address of the memory location to be programmed.
2. PD is the data to be programmed at byte address.
is the 0utput of the complement of the data written to the device.
3. D7
OUT is the output of the data written to the device.
4. D
5. Figure indicates last two bus cycles of four bus cycle sequence.
PA
D7
DOUTPDAOH
Aeroflex Circuit TechnologySCD3851 REV A 5/21/98 Plainview NY (516) 694-6700
C = Commercial Temp, 0°C to +70°C
I = Industrial Temp, -40°C to +85°C
T = Military Temp, -55°C to +125°C
M = Military Temp, -55°C to +125°C Screened
Q = MIL-PRF-38534 Compliant/SMD