s908qy2ad1vdwer Freescale Semiconductor, Inc, s908qy2ad1vdwer Datasheet - Page 162

• Manufacturer Part Number: s908qy2ad1vdwer
• Description: Mc68hc908qt4a Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Electrical Specifications
16.10 3-V Control Timing
162
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
= 2.7 to 3.3 Vdc, V
RST
IRQ
OP
Characteristic
(2)
(2)
SS
)
= 0 Vdc, T
MC68HC908QYA/QTA Family Data Sheet, Rev. 2
A
Figure 16-6. RST and IRQ Timing
(1)
= T
L
(2)
to T
t
H
t
ILIH
RL
; timing shown with respect to 20% V
t
ILIL
f
Symbol
OP
t
t
t
t
ILIH
ILIL
cyc
(f
RL
Bus
)
Note
DD
Min
250
200
200
—
and 70% V
(3)
Freescale Semiconductor
cyc
Max
DD
—
—
—
—
4
.
, unless otherwise
MHz
Unit
t
ns
ns
ns
cyc