User Manual

AT73C500
28
Digital Characteristics
V
DD
= 5V, V
DA
= 5V
Parameter Min Typ Max Units
High-Level Input Voltage 4.0 V
Low-Level Input Voltage 1.0 V
High-Level Output Voltage, I
SOURCE
= -100 µA 4.0 V
Low-Level Output Voltage, I
SINK
= 0.5 mA 0.4 V
Input Leakage Current -10 10 µA
Crystal Oscillator
Parameter Min Typ Max Units
Crystal Frequency 1.0 6.0 MHz
Crystal Inaccuracy 30 ppm
Crystal Temp Coefficient (-25°C to +70°C) 30 ppm/C
AC Parameters
Parameter Min Typ Max Units
Master Clock Frequency 1.0 6.0 MHz
Clock Duty Cycle at XI pin 40 60 %
Timing of 8-bit Bus
Parameter Parameter Min Typ Max Units
DDLY Data Delay from Falling Edge of STROBE 25 ns
DH Data Hold Time From Rising Edge of STROBE 5 ns
SDLY Strobe Delay from Falling Edge of Clock 0 20 ns
SH Strobe Hold Time From Rising Edge of Clock 3 20 ns
ASU Addr Setup Time to Rising Edge of STROBE 10 ns
AH Addr Hold Time From Rising Edge of STROBE 3 ns
RWSU RD/WR Setup to Rising Edge of STROBE 10 ns
RWH RD/WR Hold from Rising Edge of STROBE 3 ns
BRS BRDY Set-Up Time to Rising Edge of Clock 40 ns
Power Supply Characteristics
Parameter Parameter Min Typ Max Units
V
DD
, V
DA
Supply Voltage 4.75 5.25 V
I
DD
(AT73C501/AT73C502 + AT73C500) Supply Current 15 22 mA
I
DA
(ADC) Supply Current 10 15 mA
A
GND
Analog Ground Voltage 2.45 2.5 2.55 V
V
REF
-A
GND
Reference Voltage 1.17 1.27 1.37 V