Datasheet

MC56F8006/MC56F8002 Digital Signal Controller, Rev. 4
Specifications
Freescale Semiconductor48
Low-voltage detection threshold —
high range
7
V
LVD H
8
V
DD
falling 2.31 2.34 2.36 V –40 C ~
105 C
2.16 2.3 2.48 —40 C ~
+125 C
V
DD
rising 2.38 2.44 2.47 –40 C ~
105 C
2.23 2.39 2.49 —40 C ~
+125 C
Low-voltage detection threshold —
low range
7
V
LVD L
V
DD
falling 1.8 1.84 1.87 V –40 C ~
105 C
N/A N/A N/A —40 C ~
+125 C
V
DD
rising 1.88 1.93 1.96 –40 C ~
105 C
Low-voltage warning threshold V
LVW
9
V
DD
falling 2.58 2.62 2.71 V –40 C ~
105 C
2.5 2.61 2.74 —40 C ~
+125 C
V
DD
rising 2.59 2.67 2.74 –40 C ~
105 C
2.51 2.66 2.79 —40 C ~
+125 C
Low-voltage inhibit reset/recover
hysteresis
7
V
hys
— 50 — mV —40 C ~
+105 C
Bandgap Voltage Reference
10
V
BG
1.15 1.17 1.18 V –40 C ~
105 C
1.14 —40 C ~
+125 C
1
Typical values are measured at 25 C. Characterized, not tested
2
As the supply voltage rises, the LVD circuit holds the MCU in reset until the supply has risen above V
LVDL
. If the system clock
frequency < 16 MHz, V
DD
can be 1.7 V to 3.6 V.
3
All functional non-supply pins are internally clamped to V
SS
and V
DD
.
4
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.
5
Power supply must maintain regulation within operating V
DD
range during instantaneous and operating maximum current
conditions. If positive injection current (V
In
> V
DD
) is greater than I
DD
, the injection current may flow out of V
DD
and could result
in external power supply going out of regulation. Ensure external V
DD
load shunts current greater than maximum injection current.
This is the greatest risk when the MCU is not consuming power. Examples are: if no system clock is present or if clock rate is low
(which would reduce overall power consumption).
6
Maximum is highest voltage that POR is guaranteed.
7
Low voltage detection and warning limits measured at 32 MHz bus frequency. This characteristic is not applicable to devices with
a temperature range from –40 C to 125 C. Please see the PMC chapter in the reference manual for details.
Table 21. DC Characteristics (continued)
Characteristic Symbol Condition Min Typ
1
Max Unit
Ambient
temperature
operating
range