s908qy2ad1vdwer Freescale Semiconductor, Inc, s908qy2ad1vdwer Datasheet - Page 159
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s908qy2ad1vdwer
Manufacturer Part Number
s908qy2ad1vdwer
Description
Mc68hc908qt4a Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.S908QY2AD1VDWER.pdf
(200 pages)
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16.7 5-V Control Timing
Freescale Semiconductor
Internal operating frequency
Internal clock period (1/f
RST input pulse width low
IRQ interrupt pulse width low (edge-triggered)
IRQ interrupt pulse period
1. V
2. Values are based on characterization results, not tested in production.
3. The minimum period is the number of cycles it takes to execute the interrupt service routine plus 1 t
noted.
DD
= 4.5 to 5.5 Vdc, V
RST
IRQ
OP
Characteristic
(2)
(2)
SS
)
= 0 Vdc, T
MC68HC908QYA/QTA Family Data Sheet, Rev. 2
A
Figure 16-3. RST and IRQ Timing
(1)
= T
L
(2)
to T
t
H
t
ILIH
RL
; timing shown with respect to 20% V
t
ILIL
Symbol
(f
t
t
t
f
BUS
t
ILIH
ILIL
OP
cyc
RL
)
Note
Min
DD
125
100
100
—
(3)
and 70% V
cyc
Max
SS
—
—
—
—
8
5-V Control Timing
.
, unless otherwise
MHz
Unit
t
ns
ns
ns
cyc
159
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