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HMS81C2012A/2020A
18
SEP. 2004 Ver 2.00
7.6 AC Characteristics
(TA=-40~ 85°C, VDD=5V±10%, VSS=0V)
Figure 7-1 Timing Chart
Parameter
Symbol
Pins
Specifications
Unit
Min.
Typ.
Max.
Operating Frequency
fCP
XIN
1
-
8
MHz
External Clock Pulse Width
tCPW
XIN
80
-
-
nS
External Clock Transition Time
tRCP,tFCP
XIN
-
-
20
nS
Oscillation Stabilizing Time
tST
XIN, XOUT
-
-
20
mS
External Input Pulse Width
tEPW
INT0, INT1, EC0
2
-
-
tSYS
External Input Pulse Transi-
tion Time
tREP,tFEP
INT0, INT1, EC0
-
-
20
nS
RESET Input Width
tRST
RESET
8-
-
tSYS
tRCP
tFCP
XI
INT0, INT1
0.5V
VDD-0.5V
0.2VDD
RESETB
tREP
tFEP
0.2VDD
0.8VDD
EC0
tRST
tEPW
tEPW
1/fCP
tCPW
tCPW
tSYS