MC56F8257MLH Freescale Semiconductor, MC56F8257MLH Datasheet - Page 84

• Manufacturer Part Number: MC56F8257MLH
• Description: DSC 64K FLASH 60MHZ 64-LQFP
• Manufacturer: Freescale Semiconductor
• Series: 56F8xxxr

Specifications of MC56F8257MLH

• Core Processor: 56800E
• Core Size: 16-Bit
• Speed: 60MHz
• Connectivity: CAN, I²C, LIN, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Ram Size: 4K x 16
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x12b, D/A 1x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 64-LQFP
• Product: DSCs
• Processor Series: 56800E
• Core: 56800E
• Device Million Instructions Per Second: 60 MIPs
• Maximum Clock Frequency: 60 MHz
• Number Of Programmable I/os: 54
• Data Ram Size: 8 KB
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

Functional Description
The details of single-ended and differential measurement are described under the
CHNCFG field. Internally, all measurements are performed differentially.
84
• Sequential, single-ended mode conversions — During each conversion cycle
• Sequential, differential mode conversions — During any conversion cycle (sample),
• Parallel, single-ended mode conversions — During any conversion cycle (sample),
• Parallel, differential mode conversions — During any conversion cycle (sample),
(sample), any one input of the two four input groups can be directed to its
corresponding output.
either member of a differential pair may be referenced, resulting in a differential
measurement on that pair.
any of ANA[0:7] can be directed to the converter A output and any of ANB[0:7] can
be directed to the converter B output.
either member of any possible differential pair—ANA0/1, ANA2/3, ANA4/5,
ANA6/7, ANB0/1, ANB2/3, ANB4/5, and ANB6/7—can be referenced, resulting in
a differential measurement of that pair at the converter A output (for ANA pairs) or
converter B output (for ANB pairs).
Sequential, single-ended
Sequential, differential
Parallel, single-ended
Conversion Mode
General
Table 2-67. Analog Multiplexing Controls for Each Conversion Mode
MC56F825x/4x Reference Manual, Rev. 2, 10/2010
The two 1-of-8 select multiplexes can be set for
the appropriate input line.
The channel select switches are turned on in
pairs, providing a dual 1-of-4 select function so
that either of the two differential channels can be
routed to the A/D input.
The two 1-of-8 select multiplexes can be set for
the appropriate input line.
Channel Select Switches
Table continues on the next page...
Preliminary
The two lower switches within the
dashed box are controlled so that
one switch is always closed and the
other open.
The lower switch is closed, provid‐
ing (V
ential input of the A/D. The upper
switch is always closed so that any
of the four inputs can get to the A/D
input.
The upper and lower switches are
open and the middle switch is
closed, providing the differential
channel to the differential input of
the A/D.
The lower switch is closed, provid‐
ing V
the A/D. The upper switch is always
closed so that any of the four inputs
can get to the A/D input.
Single-Ended Differential
Switches
REF
REFH
/2 to the differential input of
+V
Freescale Semiconductor
REFLO
)/2 to the differ‐