Aeroflex Circuit Technology SCD3851 REV A 5/21/98 Plainview NY (516) 694-6700
2
Absolute Maximum Ratings
Symbol Rating Range Units
TCCase Operating Temperature -55 to +125 °C
TSTG Storage Temperature -65 to +150 °C
VGMaximum Signal Voltage to Ground -0.5 to +7 V
TLMaximum Lead Temperature (10 seconds) 300 °C
Parameter
Flash Data Retention 10 Years
Flash Endurance (Write/Erase Cycles) 10,000
Normal Operating Conditions
Symbol Parameter Minimum Maximum Units
VCC Power Supply Voltage +4.5 +5.5 V
VIH Input High Voltage +2.2 VCC + 0.3 V
VIL Input Low Voltage -0.5 +0.8 V
Capacitance
(VIN = 0V, f = 1MHz, TA = 25°C)
Symbol Parameter Maximum Units
CAD A0 – A18 Capacitance 80 pF
COEOE Capacitance 80 pF
CWE1-4 F/S Write Enable Capacitance 30 pF
CCEF/S Chip Enable Capacitance 50 pF
CI/OI/O0 – I/O31 Capacitance 30 pF
This parameter is guaranteed by design but not tested
DC Characteristics
(VCC = 5.0V, VSS = 0V, Tc = -55°C to +125°C)
Parameter Sym Conditions Min Max Units
Input Leakage Current ILI VCC = Max, VIN =0toVCC 10 µA
Output Leakage Current ILO FCE = SCE = VIH, OE = VIH,
VOUT =0toVCC 10 µA
SRAM Operating Supply Current x 32
Mode ICCx32 SCE = VIL, OE = VIH, f = 5MHz, VCC =
Max, FCE = VIH 500 mA
Standby Current ISB FCE = SCE = VIH, OE = VIH, f = 5MHz,
VCC = Max 80 mA
SRAM Output Low Voltage VOL IOL = 8 mA, VCC = Min, FCE = VIH 0.4 V
SRAM Output High Voltage VOH IOH = -4.0 mA, , VCC = Min, FCE = VIH 2.4 V
Flash Vcc Active Current for Read (1) ICC1 FCE = VIL, OE = VIH, SCE = VIH 260 mA
Flash Vcc Active Current for Program
or Erase (2) ICC2 FCE = VIL, OE = VIH, SCE = VIH 300 mA
Flash Output Low Voltage VOL IOL = 12 mA, VCC = Min, SCE = VIH 0.45 V
Flash Output High Voltage VOH1 IOH = -2.5 mA, , VCC = Min, SCE = VIH 0.85 x VCC V
Flash Low Vcc Lock Out Voltage VLKO 3.2 4.2 V
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 at VIH 2) ICC active while Embedded Algorithim (program or
erase) is in progress 3) DC test conditions: VIL = 0.3V, VIH = VCC - 0.3V