MC68HC908LK24 MOTOROLA [Motorola, Inc], MC68HC908LK24 Datasheet - Page 440

• Manufacturer Part Number: MC68HC908LK24
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Electrical Specifications
24.8 5V Control Timing
Data Sheet
440
Notes:
Notes:
Capacitance
POR re-arm voltage
POR rise-time ramp rate
Monitor mode entry voltage (at IRQ pin)
Pullup resistors
Low-voltage inhibit, trip falling voltage
Low-voltage inhibit, trip rising voltage
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. The 8kHz clock is from a 32kHz external square wave clock input at OSC1, for the driving the RTC. Due to loading effects,
6. LCD driver configured for low current mode.
7. Maximum is highest voltage that POR is guaranteed.
8. If minimum V
9. R
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.
Ports (as input or output)
PTA0–PTA3 and PTD4–PTD7 as KBI0–KBI7
RST, IRQ
100 pF on all outputs. C
all outputs. C
the I
V
information.
DD
SS
PU1
DD
= 0 Vdc; timing shown with respect to 20% V
DD
= 3.0 to 3.6 Vdc, V
is reached.
and R
DD
values will be larger when a 32kHz crystal circuit is connected.
measured using external square wave clock source. All inputs 0.2 V from rail. No dc loads. Less than 100 pF on
PU2
DD
L
(9)
= 20 pF on OSC2. All ports configured as inputs. OSC2 capacitance linearly affects wait I
are measured at V
is not reached before the internal POR reset is released,
DD
Characteristic
(7)
measured using external square wave clock source. All inputs 0.2 V from rail. No dc loads. Less than
Characteristic
SS
L
(8)
= 20 pF on OSC2. All ports configured as inputs. OSC2 capacitance linearly affects run I
(3)
= 0 Vdc, T
Table 24-5. 3.3V DC Electrical Characteristics
(2)
Freescale Semiconductor, Inc.
For More Information On This Product,
(1)
DD
A
= 3.3V.
Table 24-6. 5V Control Timing
= T
(1)
L
to T
Go to: www.freescale.com
Electrical Specifications
H
, unless otherwise noted.
DD
and 70% V
Symbol
V
V
C
V
R
R
R
TRIPR
TRIPF
C
V
OUT
POR
POR
PU1
PU2
DD
IN
HI
, unless otherwise noted.
Symbol
RST
t
f
OP
IRL
1.5 × V
0.02
Min
2.1
2.2
21
21
must be driven low externally until minimum
—
—
0
DD
MC68HC908LJ24/LK24 — Rev. 2
Min
750
—
Typ
30
30
—
—
—
—
—
—
—
(2)
Max
—
8
Max
100
2.8
2.9
DD
12
39
39
—
8
8
.
MOTOROLA
MHz
Unit
DD
ns
V/ms
Unit
mV
kΩ
kΩ
pF
.
V
V
V