mc9s08qb8 Freescale Semiconductor, Inc, mc9s08qb8 Datasheet - Page 11

• Manufacturer Part Number: mc9s08qb8
• Description: 8-bit Hcs08 Central Processor Unit
• Manufacturer: Freescale Semiconductor, Inc

1
2
3
4
5
6
7
Freescale Semiconductor
Num C
11
12
13
14
15
16
17
18
19
20
21
Typical values are measured at 25 °C. Characterized, not tested
The specified resistor value is the actual value internal to the device. The pullup or pulldown value may appear lower when
measured externally on the pin.
All functional non-supply pins, except for PTA5 are internally clamped to V
Input must be current limited to the value specified. To determine the value of the required current-limiting resistor, calculate
resistance values for positive and negative clamp voltages, then use the larger of the two values.
Power supply must maintain regulation within operating V
conditions. If the positive injection current (V
result in external power supply going out of regulation. Ensure that external V
injection current. This will be the greatest risk when the MCU is not consuming power. Examples are: if no system clock is
present, or if clock rate is very low (which would reduce overall power consumption).
Maximum is highest voltage that POR is guaranteed.
Factory trimmed at V
C
D
C Input Capacitance, all pins
C RAM retention voltage
C POR re-arm voltage
D POR re-arm time
C
P
P Low-voltage detection threshold
P Low-voltage warning threshold
P Bandgap Voltage Reference
Pullup,
Pulldown
resistors
Pullup,
Pulldown
resistors
DC injection
current
5
Low-voltage inhibit reset/recover
hysteresis
3, 4,
DD
Characteristic
PTA5/IRQ/TCLK/RESET,
PTA5/IRQ/TCLK/RESET,
Total MCU limit, includes
= 3.0 V, Temp = 25 °C
sum of all stressed pins
all digital inputs except
6
when enabled
Single pin limit
when enabled
7
Table 7. DC Characteristics (continued)
MC9S08QB8 Series MCU Data Sheet, Rev. 2
In
> V
2
DD
Symbol
V
V
V
V
R
R
t
R
R
V
V
) is greater than I
POR
C
I
RAM
POR
LVW
LVD
PU,
PU,
IC
hys
BG
PD
PD
In
DD
V
range during instantaneous and operating maximum current
IN
< V
Condition
V
V
V
V
DD
DD
DD
DD
SS
—
—
—
—
—
—
—
—
DD
, V
falling
falling
rising
rising
, the injection current may flow out of V
IN
SS
> V
DD
and V
DD
load will shunt current greater than maximum
DD
.
17.5
17.5
–0.2
1.80
1.88
2.08
1.15
Min
0.9
–5
10
—
—
—
Typical
1.84
1.92
2.14
1.17
Electrical Characteristics
0.6
1.4
80
—
—
—
—
—
—
1
Max
52.5
52.5
1.88
1.96
2.26
1.18
0.2
1.0
2.0
—
—
5
8
DD
and could
Unit
mA
mA
mV
kΩ
kΩ
pF
μs
V
V
V
V
V
11