SPC5604PEF0MLQ6 Freescale Semiconductor, SPC5604PEF0MLQ6 Datasheet - Page 66
SPC5604PEF0MLQ6
Manufacturer Part Number
SPC5604PEF0MLQ6
Description
IC MCU 32BIT 512KB FLASH 144LQFP
Manufacturer
Freescale Semiconductor
Series
MPC56xx Qorivvar
Datasheet
1.SPC5604PEF0MLL6.pdf
(99 pages)
Specifications of SPC5604PEF0MLQ6
Core Processor
e200z0h
Core Size
32-Bit
Speed
64MHz
Connectivity
CAN, FlexRay, LIN, SPI, UART/USART
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
108
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Eeprom Size
64K x 8
Ram Size
40K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 30x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
144-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
SPC5604PEF0MLQ6
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
SPC5604PEF0MLQ6
Manufacturer:
FREESCALE
Quantity:
20 000
In fact a current sink contributor is represented by the charge sharing effects with the sampling capacitance: C
substantially a switched capacitance, with a frequency equal to the ADC conversion rate, it can be seen as a resistive path to
ground. For instance, assuming a conversion rate of 1 MHz, with C
/ (fc × C
partitioning between this resistance (sampled voltage on C
must be designed to respect the
Equation 4
and R
A second aspect involving the capacitance network shall be considered. Assuming the three capacitances C
initially charged at the source voltage V
is installed when the sampling phase is started (A/D switch closed).
66
AD
S
) can be neglected with respect to external resistances.
), where fc represents the conversion rate at the considered channel). To minimize the error induced by the voltage
generates a constraint for external network design, in particular on resistive path. Internal switch resistances (R
R
R
C
R
R
R
C
C
V
S
F
F
L
SW1
AD
P
S
A
: Current limiter resistance
: Source impedance
: Filter resistance
: Filter capacitance
: Pin capacitance (two contributions, C
: Sampling capacitance
: Sampling switch impedance
: Channel selection switch impedance
Source
R
S
Equation
EXTERNAL CIRCUIT
MPC5604P Microcontroller Data Sheet, Rev. 7
V A
A
4:
(refer to the equivalent circuit reported in
R
Filter
Figure 15. Input equivalent circuit
F
C
R S
-------------------------------------------------------------------------- -
F
+
R F
Current Limiter
+
R L
R
R EQ
S
L
) and the sum of R
P1
+
R SW
and C
S
equal to 3 pF, a resistance of 330 k is obtained (R
C
+
P2
P1
R AD
)
V
INTERNAL CIRCUIT SCHEME
S
DD
1
-- - LSB
2
+ R
Figure
F
Selection
Channel
+ R
R
SW1
C
L
P2
15): A charge sharing phenomenon
+ R
SW
Sampling
R
+ R
AD
Freescale Semiconductor
C
AD
S
, the external circuit
F
, C
S
P1
being
and C
Eqn. 4
EQ
P2
= 1
are
SW