dsp56857 Freescale Semiconductor, Inc, dsp56857 Datasheet - Page 24

• Manufacturer Part Number: dsp56857
• Description: Dsp56857 Digital Signal Controller
• Manufacturer: Freescale Semiconductor, Inc

24
V
V
Low Voltage Interrupt
Low Voltage Interrupt Recovery Hysteresis
Power on Reset
Note:
no DC loads; outputs unloaded. All ports configured as inputs; measured with all modules enabled. PLL set to 240MHz out.
Figure 4-1 Maximum Run I
Operating Conditions: V
DDIO
DDA
1.
2.
3.
4.
5.
6.
7.
for as long as the internal 2.5V is below 1.8V no matter how long the ramp up rate is. The internally regulated voltage is typically
100 mV less than V
Run
Deep Stop
Deep Stop
supply current (analog circuity)
supply current (I/O circuity)
Running Core, performing 50% NOP and 50% FIR. Clock at 120 MHz.
Deep Stop Mode - Operation frequency = 4 MHz, PLL set to 4 MHz, crystal oscillator and time of day module operating.
Light Stop Mode - Operation frequency = 120 MHz, PLL set to 240 MHz, crystal oscillator and time of day module operating.
I
Running core and performing external memory access. Clock at 120 MHz.
When V
Power-on reset occurs whenever the digital supply drops below 1.8V. While power is ramping up, this signal remains active
DD
Run (operating) I
5
includes current for core logic, internal memories, and all internal peripheral logic circuitry.
90
60
DD
120
2
2
150
30
7
drops below V
0
Characteristic
SS
DD
6
Table 4-4 DC Electrical Characteristics (Continued)
= V
during ramp up until 2.5V is reached, at which time it self-regulates.
DD
SSIO
measured using external square wave clock source (f
= V
EI
max value, an interrupt is generated.
SSA
20
EMI Mode
= 0 V, V
DDTOTAL
DD
56857 Technical Data, Rev. 6
5
= 1.62-1.98V, V
40
vs. Frequency (see Notes
MAC Mode
Symbol
DDIO
I
POR
I
V
DDIO
DDA
V
EIH
1
EI
= V
60
DDA
= 3.0–3.6V, T
osc
Min
—
—
—
—
—
80
= 4MHz) into XTAL. All inputs 0.2V from rail;
A
= –40° to +120°C, C
1.
Typ
2.5
1.5
40
60
50
0
and
100
Freescale Semiconductor
5.
L
≤ 50pF, f
in
Max
2.85
120
1.5
2.0
50
—
Table
120
op
= 120MHz
4-4)
Unit
mA
mA
mV
μA
V
V