GMS81508A Datasheet, PDF (67/91 Pages) Hynix Semiconductor – USERS MANUAL

HYUNDAI MicroElectronics
4.5. AC CHARACTERISTICS
4.5.1. Input Conditions
Parameter
Pin
Operating Frequency
System Clock
Oscillation Stabilization Time
External Clock Pulse Width
External Clock Transition Time
Interrupt Pulse Width
RESET Input "L" Width
Event Counter Input Pulse Width
Event Counter Transition Time
Xin
Xin, Xout
Xin
Xin
INT0~INT3
RESET
EC0,EC2
EC0,EC2
  
( Vdd = 5.0V±10%, Vss = 0 , Ta = -20 85 ,f (Xin) = 8 )
Symbol Unit
SPECIFICATION
ETC
MIN.
TYP.
MAX.
fcp
MHz
1
-
8
tsys
ns
500
-
250
tST
ms
20
tcpw
ns
100
trcp,tfcp ns
20
tIW
tsys
2
tRST
tsys
8
tECW
tsys
2
trEC, tfEC
ns
20

Timing Chart
Xin
INT3
INT2
INT1
INT0
RESET
EC0
EC2
1/fcp
tcpw tcpw
trcp
tIW
0.8 Vdd
tfcp
tIW
Vdd-0.5V
0.5 V
0.2 Vdd
tRST
0.2 Vdd
tECW
0.8 Vdd
tECW
trEC
tfEC
0.2 Vdd
0.8 Vdd
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