MC68HC705KJ1 Datasheet, PDF (93/108 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Control Timing
Table 10-3. Control Timing (V_DD = 3.3 Vdc)⁽¹⁾
Characteristic
Symbol Min
Max
Unit
Oscillator frequency
Crystal oscillator option
External clock source
f_OSC
—
dc
4.2
MHz
4.2
Internal operating frequency (f_OSC ÷ 2)
Crystal oscillator
External clock
f_OP
—
2.1
MHz
dc
2.1
Cycle time (1 ÷ f_OP)
RESET pulse width low
IRQ interrupt pulse width low
(edge-triggered)
t_cyc
476
—
ns
t_RL
1.5
—
t_cyc
t_ILIH
1.5
—
t_cyc
IRQ interrupt pulse width low
(edge- and level-triggered)
t_ILIL
1.5
Note⁽²⁾
t_cyc
PA0–PA3 interrupt pulse width high
(edge-triggered)
t_IHIL
1.5
—
t_cyc
PA0–PA3 interrupt pulse width
(edge- and level-triggered)
t_IHIH
1.5
Note⁽²⁾
t_cyc
OSC1 pulse width
t_OH, t_OL
200
—
ns
1.
2.
V_DD
The
= 3.3 Vdc
maximum
± 10%, V_SS =
width t_ILIL or
t0_ILI^V_H^dsch,oTu^Ald⁼
–40°C
not be
to +85°C, unless otherwise
more than the number of
noted.
cycles
it
takes
to
execute
the
interrupt
service
routine plus 19 t_cyc or the interrupt service routine will be re-entered.
IRQ PIN
IRQ₁
.
.
.
IRQ_n
IRQ
(INTERNAL)
t_ILIL
t_ILIH
t_ILIH
Figure 10-7. External Interrupt Timing
MC68HC705KJ1 • MC68HRC705KJ1 • MC68HLC705KJ1 Data Sheet, Rev. 4.1
Freescale Semiconductor
93