dsp56857 Freescale Semiconductor, Inc, dsp56857 Datasheet - Page 22

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

22
Supply voltage, core
Supply voltage, IO
Supply voltage, analog
Digital input voltages
Analog input voltages (XTAL, EXTAL)
Current drain per pin excluding V
Junction temperature
Storage temperature range
Supply voltage for Logic Power
Supply voltage for I/O Power
Supply voltage for Analog Power
Ambient operating temperature
PLL clock frequency
Operating Frequency
Frequency of peripheral bus
Frequency of external clock
Frequency of oscillator
Frequency of clock via XTAL
Frequency of clock via EXTAL
1. V
2. V
1. Assumes clock source is direct clock to EXTAL or crystal oscillator running 2-4MHz. PLL must be enabled, locked, and
selected. The actual frequency depends on the source clock frequency and programming of the CGM module.
2. Master clock is derived from on of the following four sources:
f
f
f
f
clk
clk
clk
clk
DD
DDIO
= f
= f
= f
= f
must not exceed V
xtal
pll
osc
extal
and V
when PLL is selected
when the source clock is the direct clock to EXTAL
when the source clock is the crystal oscillator and PLL is not selected
when the source clock is the direct clock to EXTAL and PLL is not selected
DDA
Characteristic
must not differ by more that 0.5V
Characteristic
1
2
Table 4-2 Recommended Operating Conditions
DDIO
Table 4-1 Absolute Maximum Ratings
DD
, GND
56857 Technical Data, Rev. 6
Symbol
V
V
V
T
V
DDIO
DDIO
V
T
STG
DD
INA
I
Symbol
IN
J
V
1
V
f
V
2
2
f
f
extal
DDIO
f
f
T
f
DDA
f
osc
xtal
ipb
clk
op
DD
pll
A
V
V
V
V
V
SSIO
SSIO
SSA
SSA
SS
Min
-40
-55
—
– 0.3
– 0.3
– 0.3
– 0.3
– 0.3
Min
1.62
3.0
3.0
-40
—
—
—
—
—
2
2
V
V
V
V
V
SSIO
SSIO
DDA
DDA
SS
Max
120
150
8
+ 2.0
+ 4.0
+ 0.3
Freescale Semiconductor
+ 4.0
+ 5.5
Max
1.98
240
120
240
240
3.6
3.6
85
60
4
4
Unit
mA
Unit
MHz
MHz
MHz
MHz
MHz
MHz
MHz
°C
°C
V
V
V
°C
V
V
V