Datasheet
Features
MC56F825x/MC56F824x Product Brief, Rev. 2
Preliminary
Freescale Semiconductor 3
Figure 2. High-performance PMSM servo system
2Features
A full set of programmable peripherals—eFlexPWM, ADCs, QSCIs, QSPI, I
2
Cs, MSCAN, inter-module
crossbar, quad timers, CRC block, DACs, analog comparators, and on-chip/off-chip clock
sources—supports various applications.
2.1 MC56F825x/MC56F824x family comparison
Table 1 compares the MC56F825x/MC56F824x devices.
Table 1. MC56F825x/MC56F824x device comparison
Feature 56F8245 56F8246 56F8247 56F8255 56F8256 56F8257
Operation frequency (MHz) 60
High speed peripheral clock (MHz) 120
Flash memory size (KB) with 1024 words per page 48 48 48 64 64 64
RAM size (KB) 668888
Enhanced
Flex PWM
(eFlexPWM)
High resolution NanoEdge PWM (520ps res.) 666666
Enhanced Flex PWM with input capture 003003
PWM fault inputs (from crossbar input) 444444
12-bit ADC with 1, 2, 4 programmable gain 2 4Ch 2 5Ch 2 8Ch 2 4Ch 2 5Ch 2 8Ch
Analog comparators (CMP), each with integrated 5-bit DAC 3
12-bit DAC 1
Cyclic redundancy check (CRC) Yes
Inter-integrated circuit (I
2
C) / SMBus 2
PWM
Line AC
LOAD
Fault Protection
Current
Sensing
Processing
Speed
Controller
ADC
PWM
Flux
Current
Controller
Quadrature
Encoder
DC-bus
ripple
compensation
Break
Control
Is_a_comp
u
s
u
s
Is_b_comp
Is_c_comp
Is_q
Is_d
Us_q
Us_d
AC
DC
Quad
Timer
Isa Isb IscIsa Isb Isc
Temperature
Is_a
Is_b
Is_c
U_DC-bus
U_dcb
6
PMSM
6
PMSM
Decoupling
(Back -
EMF feedforward )
Position
&
Speed
Sensing
Faults
U_Dc bus
Sector
PWM
GPIO
3
2
Torque
Current
Controller
u
u
e
j
e
-j
i
s
i
s
Speed
Reference
++
--
-
+
Is_d*
GPIO & Serial Interface
r
Actual
Speed
DSC
PWM
Line AC
LOAD
Fault Protection
Current
Sensing
Processing
Speed
Controller
ADC
PWM
Flux
Current
Controller
Quadrature
Encoder
DC-bus
ripple
compensation
Break
Control
Is_a_comp
u
s
u
s
Is_b_comp
Is_c_comp
Is_q
Is_d
Us_q
Us_d
AC
DC
Quad
Timer
Isa Isb IscIsa Isb Isc
Temperature
Is_a
Is_b
Is_c
U_DC-bus
U_dcb
6
PMSM
6
PMSM
Decoupling
(Back -
EMF feedforward )
Position
&
Speed
Sensing
Faults
U_Dc bus
Sector
PWM
GPIO
3
2
Torque
Current
Controller
u
u
e
j
e
-j
i
s
i
s
Speed
Reference
++
--
-
+
Is_d*
Is_d*
GPIO & Serial Interface
r
Actual
Speed
DSC