82C54 Datasheet, PDF (15/18 Pages) Intel Corporation – CHMOS PROGRAMMABLE INTERVAL TIMER

82C54
ABSOLUTE MAXIMUM RATINGS
Ambient Temperature Under Bias
0 C to 70 C
Storage Temperature
b_{65 to} a_{150 C}
Supply Voltage
b_{0 5 to} a_{8 0V}
Operating Voltage
a_{4V to} a_7V
Voltage on any Input
GND ^b2V to ^a6 5V
Voltage on any Output GND^b0 5V to V_CC ^a 0 5V
Power Dissipation
1 Watt
NOTICE This is a production data sheet The specifi-
cations are subject to change without notice
WARNING Stressing the device beyond the ‘‘Absolute
Maximum Ratings’’ may cause permanent damage
These are stress ratings only Operation beyond the
‘‘Operating Conditions’’ is not recommended and ex-
tended exposure beyond the ‘‘Operating Conditions’’
may affect device reliability
D C CHARACTERISTICS
(T_A^e0 C to 70 C V_CC^e5Vg 10% GND^e0V) (T_A ^{e b}40 C to ^a85 C for Extended Temperature)
Symbol
Parameter
Min
Max
Units
Test Conditions
V_IL
Input Low Voltage
b0 5
08
V
V_IH
Input High Voltage
20
V_CC a 0 5
V
V_OL
Output Low Voltage
04
V
I_OL e 2 5 mA
V_OH
Output High Voltage
30
V_CC b 0 4
V
I_OH e b2 5 mA
V
I_OH e b100 mA
I_IL
Input Load Current
g2 0
mA V_INeV_CC to 0V
I_OFL
Output Float Leakage Current
g 10
mA V_OUTeV_CC to 0 0V
I_CC
V_CC Supply Current
20
mA
8MHz 82C54
Clk Freqe
10MHz 82C54-2
I_CCSB
V_CC Supply Current-Standby
10
mA CLK Freq e DC
CS e V_CC
All Inputs Data Bus V_CC
All Outputs Floating
I_CCSB1 V_CC Supply Current-Standby
C_IN
C_{I O}
C_OUT
Input Capacitance
I O Capacitance
Output Capacitance
150
mA CLK Freq e DC
CS e V_CC All Other Inputs
I O Pins e V_GND Outputs Open
10
pF f_c e 1 MHz
20
pF _{Unmeasured pins}
20
pF ^{returned to GND(5)}
A C CHARACTERISTICS
(T_A ^e 0 C to 70 C V_CC ^e 5V g10% GND ^e0V) (T_A ^{e b}40 C to ^a85 C for Extended Temperature)
BUS PARAMETERS (Note 1)
READ CYCLE
Symbol
Parameter
t_AR
v Address Stable Before RD
t_SR
v CS Stable Before RD
t_RA
u Address Hold Time After RD
t_RR
RD Pulse Width
t_RD
v Data Delay from RD
t_AD
Data Delay from Address
t_DF
u RD to Data Floating
t_RV
Command Recovery Time
NOTE
1 AC timings measured at V_OH e 2 0V V_OL e 0 8V
82C54-2
Min
Max
30
0
0
95
85
185
5
65
165
Units
ns
ns
ns
ns
ns
ns
ns
ns
15