Timing waveforms, Ac characteristics – Rainbow Electronics aP89010 User Manual
Page 14
Integrated Circuits Inc.
aP89021/010
Ver 2.0 Dec 6, 2006
14
TIMING WAVEFORMS
AC CHARACTERISTICS
( T
A
= 0 to 70℃, VDD = 3.3V, VSS = 0V, 8KHz sampling )
Symbol
Parameter
Min.
Typ.
Max.
Unit
Note
tKD
Key trigger debounce time
16
ms
1
tKD
Key trigger debounce time – retrigger
24
ms
1
tSTPD
STOP pulse output delay time
256
μs
tSTPW STOP pulse width
64
ms
1
tBD
BUSY signal output delay time
100
ns
tBH
BUSY signal output hold time
100
ns
tAS
Address set-up time
100
ns
tAH
Address hold time
100
ns
tSBTW SBT stroke pulse width
16
ms
1
tLEDC
LED flash frequency
3
Hz
2
Notes :
1.
This parameter is inversely proportional to the sampling frequency.
2.
This parameter is proportional to the sampling frequency.
S1~S4, SBT
STOP
COUT
BUSY
t
BD
t
BH
t
STPW
t
STPD
t
KD
KEY Trigger Mode
CPU Parallel Mode
t
SBTW
Addr.
S1~S4
SBT
t
AH
t
AS