mc68hc908ap8a Freescale Semiconductor, Inc, mc68hc908ap8a Datasheet - Page 298

• Manufacturer Part Number: mc68hc908ap8a
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Electrical Specifications
22.6 5V Control Timing
298
Low-voltage inhibit, trip voltage2
V
Internal operating frequency
RST input pulse width low
1. V
2. Typical values reflect average measurements at midpoint of voltage range, 25 °C only.
3. Run (operating) I
4. Wait I
5. STOP I
6. STOP I
7. Maximum is highest voltage that POR is guaranteed. The rearm voltage is triggered by V
8. If minimum V
9. R
10. Measured from V
1. V
2. Some modules may require a minimum frequency greater than dc for proper operation; see appropriate table for this
3. Minimum pulse width reset is guaranteed to be recognized. It is possible for a smaller pulse width to cause a reset.
REG
on all outputs; C
with all modules enabled.
C
V
information.
DD
DD
DD
PU1
L
(10)
= 20 pF on OSC2; all ports configured as inputs; OSC2 capacitance linearly affects wait I
= 4.5 to 5.5 Vdc, V
is reached.
= 4.5 to 5.5 Vdc, V
DD
and R
DD
DD
measured using external 32MHz to OSC1; all inputs 0.2 V from rail; no dc loads; less than 100 pF on all outputs.
measured using external 8MHz clock to OSC1; no port pins sourcing current.
measured with OSC1 grounded; no port pins sourcing current.
PU2
DD
are measured at V
is not reached before the internal POR reset is released,
DD
L
Characteristic
= 20 pF on OSC2; all ports configured as inputs; OSC2 capacitance linearly affects run I
DD
measured using external 32MHz clock to OSC1; all inputs 0.2 V from rail; no dc loads; less than 100pF
= V
Characteristic
(3)
SS
SS
TRIPF1
(2)
= 0 Vdc; timing shown with respect to 20% V
= 0 Vdc, T
Table 22-4. DC Electrical Characteristics (5V)
(Min) to 5.5 V.
(1)
DD
MC68HC908AP A-Family Data Sheet, Rev. 3
A
= 5.0V
(1)
= T
Table 22-5. Control Timing (5V)
L
to T
H
, unless otherwise noted.
Symbol
V
V
TRIPF2
REG
Symbol
DD
RST
f
t
OP
RL
and 70% V
2.25
2.25
Min
must be driven low externally until minimum
DD
Min
100
—
, unless otherwise noted.
REG
Typ
2.45
2.50
DD
.
(2)
.
Freescale Semiconductor
Max
—
8
Max
2.65
2.75
DD
; measured
MHz
Unit
ns
Unit
V
V