FREESCALE 56852

56852
Data Sheet
Technical Data
56800E
16-bit Digital Signal Controllers
DSP56852
Rev. 8
01/2007
freescale.com
DSP56852 General Description
• 120 MIPS at 120MHz
• Interrupt Controller
• 6K x 16-bit Program SRAM
• General Purpose 16-bit Quad Timer
• 4K x 16-bit Data SRAM
• 1K x 16-bit Boot ROM
• JTAG/Enhanced On-Chip Emulation (OnCE™) for
unobtrusive, real-time debugging
• 21 External Memory Address lines, 16 data lines and
four chip selects
• Computer Operating Properly (COP)/Watchdog Timer
• 81-pin MAPBGA package
• One (1) Serial Port Interface (SPI) or one (1) Improved
Synchronous Serial Interface (ISSI)
• Up to 11 GPIO
• One (1) Serial Communication Interface (SCI)
6
VDDIO
VDD
6
3
JTAG/
Enhanced
OnCE
6
VSS VDDA
VSSA
3
16-Bit
56800E Core
Address
Generation Unit
Program Controller
and
Hardware Looping Unit
VSSIO
Bit
Manipulation
Unit
Data ALU
16 x 16 + 36 → 36-Bit MAC
Three 16-bit Input Registers
Four 36-bit Accumulators
PAB
PDB
CDBR
CDBW
R/W Control
Memory
XDB2
Program Memory
6144 x 16 SRAM
XAB1
PAB
PDB
Data Memory
4096 x 16 SRAM
CDBR
CDBW
System
Address
Decoder
System
Device
Peripheral
Address
Decoder
A19 muxed (CS3)
D0-D12[12:0]
D13-15 muxed (Mode A,B,C)
WR Enable
RD Enable
IPBus Bridge (IPBB)
Peripheral
Device
Selects
Decoding
Peripherals
A0-16
A17-18 muxed (timer pins)
System
Bus
Control
XAB2
Boot ROM
1024 x 16 ROM
RW
Control
IPAB
IPWDB
Clock
resets
External Address
Bus Switch
External Data
Bus Switch
IPRDB
External Bus
Interface Unit
SCI or
GPIOE
Bus Control
1 Quad
Timer
or A17,
A18
SSI or
SPI or
GPIOC
COP/
Watchdog
Interrupt
Controller
P
O
R
System
Integration
Module
PLL
Clock
Generator
O
S
C
XTAL
EXTAL
CS[2:0] muxed (GPIOA)
2
2
6
IRQA
IRQB
3
CLKO
RESET
muxed (A20)
MODE
muxed (D13-15)
56852 Block Diagram
56852 Technical Data, Rev. 8
Freescale Semiconductor
3
Part 1 Overview
1.1 56852 Features
1.1.1
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1.1.2
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1.1.3
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Core
Efficient 16-bit engine with dual Harvard architecture
120 Million Instructions Per Second (MIPS) at 120MHz core frequency
Single-cycle 16 × 16-bit parallel Multiplier-Accumulator (MAC)
Four (4) 36-bit accumulators including extension bits
16-bit bidirectional shifter
Parallel instruction set with unique DSP addressing modes
Hardware DO and REP loops
Three (3) internal address buses and one (1) external address bus
Four (4) internal data buses and one (1) external data bus
Instruction set supports both DSP and controller functions
Four (4) hardware interrupt levels
Five (5) software interrupt levels
Controller-style addressing modes and instructions for compact code
Efficient C Compiler and local variable support
Software subroutine and interrupt stack with depth limited only by memory
JTAG/Enhanced OnCE debug programming interface
Memory
Harvard architecture permits as many as three simultaneous accesses to program and data memory
On-chip memory includes:
— 6K × 16-bit Program SRAM
— 4K × 16-bit Data SRAM
— 1K × 16-bit Boot ROM
21 External Memory Address lines, 16 data lines and four (4) programmable chip select signals
Peripheral Circuits for DSP56852
General Purpose 16-bit Quad Timer with two external pins*
One (1) Serial Communication Interface (SCI)*
One (1) Serial Port Interface (SPI) or one (1) Improved Synchronous Serial Interface (ISSI) module*
Interrupt Controller
Computer Operating Properly (COP)/Watchdog Timer
JTAG/Enhanced On-Chip Emulation (EOnCE) for unobtrusive, real-time debugging
81-pin MAPBGA package
Up to 11 GPIO
* Each peripheral I/O can be used alternately as a General Purpose I/O if not needed
56852 Technical Data, Rev. 8
4
Freescale Semiconductor
56852 Description
1.1.4
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Energy Information
Fabricated in high-density CMOS with 3.3V, TTL-compatible digital inputs
Wait and Stop modes available
1.2 56852 Description
The 56852 is a member of the 56800E core-based family of controllers. It combines, on a single chip, the
processing power of a Digital Signal Processor (DSP) and the functionality of a microcontroller with a
flexible set of peripherals to create an extremely cost-effective solution. Because of its low cost,
configuration flexibility, and compact program code, the 56852 is well-suited for many applications. The
56852 includes many peripherals especially useful for low-end Internet appliance applications and
low-end client applications such as telephony; portable devices; Internet audio; and point-of-sale systems
such as noise suppression; ID tag readers; sonic/subsonic detectors; security access devices; remote
metering; and sonic alarms.
The 56800E core is based on a Harvard-style architecture consisting of three execution units operating in
parallel, allowing as many as six operations per instruction cycle. The microprocessor-style programming
model and optimized instruction set allow straightforward generation of efficient, compact DSP and
control code. The instruction set is also highly efficient for C-Compilers, enabling rapid development of
optimized control applications.
The 56852 supports program execution from either internal or external memories. Two data operands can
be accessed from the on-chip Data RAM per instruction cycle. The 56852 also provides two external
dedicated interrupt lines, and up to 11 General Purpose Input/Output (GPIO) lines, depending on
peripheral configuration.
The 56852 includes 6K words of Program RAM, 4K words of Data RAM and 1K of Boot RAM. It also
supports program execution from external memory.
This controller also provides a full set of standard programmable peripherals that include one improved
Synchronous Serial Interface (SSI) or one Serial Peripheral Interface (SPI), one Serial Communications
Interface (SCI), and one Quad Timer. The SSI, SPI, SCI I/O and three chip selects can be used as General
Purpose Input/Outputs when its primary function is not required. The SSI and SPI share I/O, so, at most,
one of these two peripherals can be in use at any time.
1.3 State of the Art Development Environment
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•
Processor ExpertTM (PE) provides a Rapid Application Design (RAD) tool that combines easy-to-use
component-based software application creation with an expert knowledge system.
The Code Warrior Integrated Development Environment is a sophisticated tool for code navigation,
compiling, and debugging. A complete set of evaluation modules (EVMs) and development system cards
will support concurrent engineering. Together, PE, Code Warrior and EVMs create a complete, scalable
tools solution for easy, fast, and efficient development.
56852 Technical Data, Rev. 8
Freescale Semiconductor
5
1.4 Product Documentation
The four documents listed in Table 1-1 are required for a complete description of and proper design with
the 56852. Documentation is available from local Freescale distributors, Freescale semiconductor sales
offices, Freescale Literature Distribution Centers, or online at www.freescale.com.
Table 1-1 DSP56852 Chip Documentation
Topic
Description
Order Number
DSP56800E
Reference Manual
Detailed description of the 56800E architecture, 16-bit
controller core processor and the instruction set
DSP56800ERM
DSP56852
User’s Manual
Detailed description of memory, peripherals, and
interfaces of the 56852
DSP56852UM
DSP56852
Technical Data Sheet
Electrical and timing specifications, pin descriptions,
and package descriptions (this document)
DSP56852
DSP56852
Errata
Details any chip issues that might be present
DSP56852E
1.5 Data Sheet Conventions
This data sheet uses the following conventions:
OVERBAR
This is used to indicate a signal that is active when pulled low. For example, the RESET pin is
active when low.
“asserted”
A high true (active high) signal is high or a low true (active low) signal is low.
“deasserted”
A high true (active high) signal is low or a low true (active low) signal is high.
Examples:
Signal/Symbol
Logic State
Signal State
Voltage1
PIN
True
Asserted
VIL/VOL
PIN
False
Deasserted
VIH/VOH
PIN
True
Asserted
VIH/VOH
PIN
False
Deasserted
VIL/VOL
1. Values for VIL, VOL, VIH, and VOH are defined by individual product specifications.
56852 Technical Data, Rev. 8
6
Freescale Semiconductor
Introduction
Part 2 Signal/Connection Descriptions
2.1 Introduction
The input and output signals of the 56852 are organized into functional groups, as shown in Table 2-1 and
as illustrated in Figure 2-1. In Table 3-1, each table row describes the package pin and the signal or
signals present.
Table 2-1 Functional Group Pin Allocations
Functional Group
Number of Pins
Power (VDD, VDDIO, or VDDA)
101
Ground (VSS, VSSIO,or VSSA)
101
Phase Lock Loop (PLL) and Clock
22
External Bus Signals
393
External Chip Select*
34
Interrupt and Program Control
35
Synchronous Serial Interface (SSI) Port*
6
Serial Communications Interface (SCI) Port*
2
Serial Peripheral Interface (SPI) Port
06
Quad Timer Module Port
07
JTAG/Enhanced On-Chip Emulation (EOnCE)
6
*Alternately, GPIO pins
1. VDD = VDD CORE, VSS = VSS CORE, VDDIO= VDD IO, VSSIO = VSS IO, VDDA = VDD ANA, VSSA = VSS ANA
2. CLKOUT is muxed Address pin A20.
3. Four Address pins are multiplexed with the timer, CS3 and CLKOUT pins.
4. CS3 is multiplexed with external Address Bus pin A19.
5. Mode pins are multiplexed with External Data pins D13-D15 like A17and A18.
6. Four of these pins are multiplexed with SSI.
7. Two of these pins are multiplexed with 2 bits of the External Address Bus A17and A18.
56852 Technical Data, Rev. 8
Freescale Semiconductor
7
Logic
Power
I/O
Power
VDD
1
3
VSS
3
VDDIO
6
VSSIO
6
1
1
1
1
1
Analog
Power1
VDDA
1
VSSA
1
1
1
56852
A0–16
A17(TI/O)
Address
Bus
A18(TI/O)
A19(CS3)
CLKO(A20)
17
1
1
1
1
1
1
1
1
1
GPIOA0(CS0)
Chip
Select
GPIOA1(CS1)
GPIOA2(CS2)
D13-D15/MODEA-C
RD
WR
GPIOC1(SRXD)
SCLK(GPIOC2)(STCK)
SSI
SS(GPIOC3)(STFS)
SPI
MISO(GPIOC4)(SRCK)
MOSI(GPIOC5)(SRFS)
IRQA
Interrupt
Request
IRQB
XTAL
Oscillator
EXTAL
RESET
Reset
1
13
3
1
1
1
1
Bus
Control
GPIOC0(STXD)
1
1
Data
Bus
SCI
TXD(GPIOE1)
1
1
D0-D12
RXD(GPIOE0)
TCK
TDI
TDO
JTAG/Enhanced
OnCE
TMS
TRST
DE
1
1
Figure 2-1 56852 Signals Identified by Functional Group
56852 Technical Data, Rev. 8
8
Freescale Semiconductor
Introduction
Part 3 Signals and Package Information
All digital inputs have a weak internal pull-up circuit associated with them. These pull-up circuits are
enabled by default. Exceptions:
1. When a pin has GPIO functionality, the pull-up may be disabled under software control.
2. Mode pins D13, D14 and D15 have no pull-up.
3. TCK has a weak pull-down circuit always active.
4. Bidirectional I/O pullups automatically disable when the output is enabled.
This table is presented consistently with the Signals Identified by Functional Group figure.
1. BOLD entries in the Type column represents the state of the pin just out of reset.
2. Ouput(Z) means an output in a High-Z condition.
Table 3-1. 56852 Signal and Package Information for the 81-pin MAPBGA
Pin No.
Signal Name
Type
Description
E1
VDD
VDD
J5
VDD
Logic Power —These pins provide power to the internal structures of
the chip, and should all be attached to VDD.
E9
VDD
D1
VSS
VSS
J4
VSS
Logic Power - GND—These pins provide grounding for the internal
structures of the chip and should all be attached to VSS.
F9
VSS
C1
VDDIO
H1
VDDIO
J7
VDDIO
G9
VDDIO
B9
VDDIO
A4
VDDIO
B1
VSSIO
G1
VSSIO
J6
VSSIO
J9
VSSIO
C9
VSSIO
A5
VSSIO
B5
B6
VDDIO
I/O Power —These pins provide power for all I/O and ESD structures of
the chip, and should all be attached to VDDIO.
VSSIO
I/O Power - GND—These pins provide grounding for all I/O and ESD
structures of the chip and should all be attached to VSS.
VDDA
VDDA
Analog Power—These pins supply an analog power source
VSSA
VSSA
Analog Ground—This pin supplies an analog ground.
56852 Technical Data, Rev. 8
Freescale Semiconductor
9
Table 3-1. 56852 Signal and Package Information for the 81-pin MAPBGA (Continued)
Pin No.
Signal Name
Type
E4
A0
Output(Z)
F2
A1
Address Bus (A0–A16)—These pins specify a word address for
external program or data memory addresses.
F3
A2
F4
A3
F1
A4
G3
A5
G2
A6
J1
A7
H2
A8
H3
A9
J2
A10
H4
A11
G4
A12
J3
A13
F5
A14
H5
A15
E5
A16
F6
A17
Output(Z)
Address Bus (A17)
TIO0
Input/Output
A18
Output(Z)
TIO1
Input/Output
A19
Output(Z)
CS3
Output
External Chip Select 3 —When enabled, a CSx signal is asserted for
external memory accesses that fall within a programmable address
range.
CLKO
Output
Output clock (CLKO)—User programmable clock out reference
A20
Output
Address Bus—A20
CS0
Output
Chip Select 0 (CS0) —When enabled, a CSx signal is asserted for
external memory accesses that fall within a programmable address
range.
GPIOA0
Input/Output
G5
H6
J8
D2
Description
Timer I/O (0)—Can be programmed as either a timer input source or as
a timer output flag.
Address Bus (A18)
Timer I/O (1)—Can be programmed as either a timer input source or as
a timer output flag.
Address Bus (A19)
Port A GPIO (0) —A general purpose IO pin.
56852 Technical Data, Rev. 8
10
Freescale Semiconductor
Introduction
Table 3-1. 56852 Signal and Package Information for the 81-pin MAPBGA (Continued)
Pin No.
Signal Name
Type
D3
CS1
Output
GPIOA1
Input/Output
CS2
Output
GPIOA2
Input/Output
Port A GPIO (2) —A general purpose IO pin.
G7
D0
Input/Output
H7
D1
Data Bus (D0–D12) —specify the data for external program or data
memory accesses. D0–D15 are tri-stated when the external bus is inactive.
H8
D2
G8
D3
H9
D4
F8
D5
F7
D6
G6
D7
E8
D8
E7
D9
E6
D10
D8
D11
D7
D12
D9
D13
MODE A
Input/Output
Data Bus (D13–D15) — specify the data for external program or data
memory accesses. D0–D15 are tri-stated when the external bus is inactive.
C8
D14
MODE B
A9
D15
MODE C
C3
Description
Chip Select 1 (CS1) —When enabled, a CSx signal is asserted for
external memory accesses that fall within a programmable address
range.
Port A GPIO (1) —A general purpose IO pin.
Chip Select 2 (CS2)—When enabled, a CSx signal is asserted for
external memory accesses that fall within a programmable address
range.
Mode Select—During the bootstrap process the MODE A, MODE B,
and MODE C pins select one of the eight bootstrap modes. These pins
are sampled at the end of reset.
Note: Any time POR and EXTERNAL resets are active, the state of
MODE A, B and C pins get asynchronously transferred to the SIM
Control Register [14:12] ($1FFF08) respectively. These bits determine
the mode in which the part will boot up.
Note: Software and COP resets do not update the SIM Control
Register.
E2
RD
Output
Bus Control– Read Enable (RD)—is asserted during external memory
read cycles. When RD is asserted low, pins D0–D15 become inputs
and an external device is enabled onto the data bus. When RD is
deasserted high, the external data is latched inside the controller. RD
can be connected directly to the OE pin of a Static RAM or ROM.
56852 Technical Data, Rev. 8
Freescale Semiconductor
11
Table 3-1. 56852 Signal and Package Information for the 81-pin MAPBGA (Continued)
Pin No.
Signal Name
Type
Description
E3
WR
Output
Bus Control–Write Enable (WR)— is asserted during external
memory write cycles. When WR is asserted low, pins D0–D15 become
outputs and the controller puts data on the bus. When WR is
deasserted high, the external data is latched inside the external device.
When WR is asserted, it qualifies the A0–A15 pins. WR can be
connected directly to the WE pin of a Static RAM.
B4
RXD
Input
SCI Receive Data (RXD)—This input receives byte-oriented serial data
and transfers it to the SCI receive shift register.
GPIOE0
Input/Output
TXD
Output(Z)
GPIOE1
Input/Output
Port E GPIO (1)—A general purpose I/O pin.
GPIOC0
Input/Output
Port C GPIO (0)—This pin is a General Purpose I/O (GPIO) pin when
the SSI is not in use.
STXD
Output
SSI Transmit Data (STXD)—This output pin transmits serial data from
the SSI Transmitter Shift Register.
GPIOC1
Input/Output
Port C GPIO (1)—This pin is a General Purpose I/O (GPIO) pin when
the SSI is not in use.
SRXD
Input
SCLK
Input/Output
SPI Serial Clock (SCLK)—In Master mode, this pin serves as an
output, clocking slaved listeners. In Slave mode, this pin serves as the
data clock input.
GPIOC2
Input/Output
Port C GPIO (2)—This pin is a General Purpose I/O (GPIO) pin that
can individually be programmed as input or output pin.
STCK
Input/Output
SS
Input
GPIOC3
Input/Output
D4
B2
A2
A3
B3
STFS
Port E GPIO (0)—A general purpose I/O pin.
SCI Transmit Data (TXD)—This signal transmits data from the SCI
transmit data register.
SSI Receive Data (SRXD)—This input pin receives serial data and
transfers the data to the SSI Receive Shift Register.
SSI Serial Transfer Clock (STCK)—This bidirectional pin provides the
serial bit rate clock for the transmit section of the SSI. The clock signal
can be continuous or gated.
SPI Slave Select (SS)—In Master mode, this pin is used to arbitrate
multiple masters. In Slave mode, this pin is used to select the slave.
Input/Output
Port C GPIO (3)—This pin is a General Purpose I/O (GPIO) pin that
can individually be programmed as input or output pin.
SSI Serial Transfer Frame Sync (STFS) —This bidirectional pin is
used to count the number of words in a frame while transmitting. A
programmable frame rate divider and a word length divider are used for
frame rate sync signal generation.
56852 Technical Data, Rev. 8
12
Freescale Semiconductor
Introduction
Table 3-1. 56852 Signal and Package Information for the 81-pin MAPBGA (Continued)
Pin No.
Signal Name
Type
Description
C4
MISO
Input/Output
SPI Master In/Slave Out (MISO)—This serial data pin is an input to a
master device and an output from a slave device. The MISO line of a
slave device is placed in the high-impedance state if the slave device is
not selected.
GPIOC4
Input/Output
Port C GPIO (4)—This pin is a General Purpose I/O (GPIO) pin that
can individually be programmed as input or output pin.
SRCK
Input/Output
MOSI
Input/
Output (Z)
GPIOC5
Input/Output
C5
SSI Serial Receive Clock (SRCK)—This bidirectional pin provides the
serial bit rate clock for the receive section of the SSI. The clock signal
can be continuous or gated.
SPI Master Out/Slave In (MOSI)—This serial data pin is an output from
a master device and an input to a slave device. The master device
places data on the MOSI line a half-cycle before the clock edge that the
slave device uses to latch the data.
Port C GPIO (5)—This pin is a General Purpose I/O (GPIO) pin that
can individually be programmed as input or output pin.
SSI Serial Receive Frame Sync (SRFS)— This bidirectional pin is
used to count the number of words in a frame while receiving. A
programmable frame rate divider and a word length divider are used for
frame rate sync signal generation.
SRFS
Input/Output
A1
IRQA
Input
External Interrupt Request A (IRQA)—The IRQA Schmitt trigger input
is a synchronized external interrupt request that indicates that an
external device is requesting service. It can be programmed to be
level-sensitive or negative-edge- triggered.
C2
IRQB
Input
External Interrupt Request B (IRQB)—The IRQB Schmitt trigger input
is an external interrupt request that indicates that an external device is
requesting service. It can be programmed to be level-sensitive or
negative-edge-triggered.
A6
EXTAL
Input
External Crystal Oscillator Input (EXTAL)—This input should be
connected to an external crystal. If an external clock source other than a
crystal oscillator is used, EXTAL must be tied off.
A7
XTAL
Input/Output
Crystal Oscillator Output (XTAL)—This output connects the internal
crystal oscillator output to an external crystal. If an external clock source
other than a crystal oscillator is used, XTAL must be used as the input.
56852 Technical Data, Rev. 8
Freescale Semiconductor
13
Table 3-1. 56852 Signal and Package Information for the 81-pin MAPBGA (Continued)
Pin No.
Signal Name
Type
Description
D5
RESET
Input
Reset (RESET)—This input is a direct hardware reset on the processor.
When RESET is asserted low, the controller is initialized and placed in
the Reset state. A Schmitt trigger input is used for noise immunity.
When the RESET pin is deasserted, the initial Chip Operating mode is
latched from the D[15:13] pins. The internal reset signal will be
deasserted synchronous with the internal clocks, after a fixed number of
internal clocks.
To ensure complete hardware reset, RESET and TRST should be
asserted together. The only exception occurs in a debugging
environment when a hardware reset is required and it is necessary not
to reset the JTAG/Enhanced OnCE module. In this case, assert
RESET, but do not assert TRST.
C6
TCK
Input
Test Clock Input (TCK)—This input pin provides a gated clock to
synchronize the test logic and shift serial data to the JTAG/Enhanced
OnCE port. The pin is connected internally to a pull-down resistor.
B7
TDI
Input
Test Data Input (TDI)—This input pin provides a serial input data
stream to the JTAG/Enhanced OnCE port. It is sampled on the rising
edge of TCK and has an on-chip pull-up resistor.
A8
TDO
Output
Test Data Output (TDO)—This tri-statable output pin provides a serial
output data stream from the JTAG/Enhanced OnCE port. It is driven in
the Shift-IR and Shift-DR controller states, and changes on the falling
edge of TCK.
C7
TMS
Input
Test Mode Select Input (TMS)—This input pin is used to sequence the
JTAG TAP controller’s state machine. It is sampled on the rising edge of
TCK and has an on-chip pull-up resistor.
Note:
D6
TRST
Input
Always tie the TMS pin to VDD through a 2.2K resistor.
Test Reset (TRST)—As an input, a low signal on this pin provides a
reset signal to the JTAG TAP controller. To ensure complete hardware
reset, TRST should be asserted whenever RESET is asserted. The only
exception occurs in a debugging environment, since the Enhanced
OnCE/JTAG module is under the control of the debugger. In this case it
is not necessary to assert TRST when asserting RESET. Outside of a
debugging environment RESET should be permanently asserted by
grounding the signal, thus disabling the Enhanced OnCE/JTAG module
on the device.
Note: For normal operation, connect TRST directly to VSS. If the design is
to be used in a debugging environment, TRST may be tied to VSS through a 1K
resistor.
B8
DE
Input/Output
Debug Even (DE)— is an open-drain, bidirectional, active low signal.
As an input, it is a means of entering Debug mode of operation from an
external command controller. As an output, it is a means of
acknowledging that the chip has entered Debug mode.
56852 Technical Data, Rev. 8
14
Freescale Semiconductor
General Characteristics
Part 4 Specifications
4.1 General Characteristics
The 56852 is fabricated in high-density CMOS with 5-volt tolerant TTL-compatible digital inputs. The
term “5-volt tolerant” refers to the capability of an I/O pin, built on a 3.3V compatible process
technology, to withstand a voltage up to 5.5V without damaging the device. Many systems have a
mixture of devices designed for 3.3V and 5V power supplies. In such systems, a bus may carry both 3.3V
and 5V- compatible I/O voltage levels (a standard 3.3V I/O is designed to receive a maximum voltage of
3.3V ±10% during normal operation without causing damage). This 5V-tolerant capability therefore
offers the power savings of 3.3V I/O levels while being able to receive 5V levels without being damaged.
Absolute maximum ratings given in Table 4-1 are stress ratings only, and functional operation at the
maximum is not guaranteed. Stress beyond these ratings may affect device reliability or cause permanent
damage to the device.
The 56852 DC/AC electrical specifications are preliminary and are from design simulations. These
specifications may not be fully tested or guaranteed at this early stage of the product life cycle. Finalized
specifications will be published after complete characterization and device qualifications have been
completed.
CAUTION
This device contains protective circuitry to guard
against damage due to high static voltage or
electrical fields. However, normal precautions are
advised to avoid application of any voltages higher
than maximum rated voltages to this high-impedance
circuit. Reliability of operation is enhanced if unused
inputs are tied to an appropriate voltage level.
56852 Technical Data, Rev. 8
Freescale Semiconductor
15
Table 4-1 Absolute Maximum Ratings
Characteristic
Supply voltage, core
Supply voltage, IO
Supply voltage, analog
Digital input voltages
Analog input voltages (XTAL, EXTAL)
Current drain per pin excluding VDD, VSS, VDDA,
VSSA,VDDIO, VSSIO
Junction temperature
Storage temperature range
Symbol
Min
Max
Unit
VDD1
VSS – 0.3
VSS + 2.0
V
VDDIO2
VSSIO – 0.3
VSSA – 0.3
VSSIO + 4.0
VDDA + 4.0
V
VDDIO2
VIN
VINA
VSSIO – 0.3
VSSA – 0.3
VSSIO + 5.5
VDDA + 0.3
V
I
—
10
mA
TJ
-40
120
°C
TSTG
-55
150
°C
1. VDD must not exceed VDDIO
2. VDDIO and VDDA must not differ by more that 0.5V
Table 4-2 Recommended Operating Conditions
Characteristic
Symbol
Min
Max
Unit
VDD
1.62
1.98
V
Supply voltage for I/O Power
VDDIO
3.0
3.6
V
Supply voltage for Analog Power
VDDA
3.0
3.6
V
Ambient operating temperature
TA
-40
85
°C
PLL clock frequency1
fpll
—
240
MHz
Operating Frequency2
fop
—
120
MHz
Frequency of peripheral bus
fipb
—
60
MHz
Frequency of external clock
fclk
—
240
MHz
Frequency of oscillator
fosc
2
4
MHz
Frequency of clock via XTAL
fxtal
—
240
MHz
Frequency of clock via EXTAL
fextal
2
4
MHz
Supply voltage for Logic Power
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 one of the following four sources:
fclk = fxtal when the source clock is the direct clock to EXAL
fclk = fpll when PLL is selected
fclk = fosc when the source clock is the crystal oscillator and PLL is not selected
fclk = fextal when the source clock is the direct clock to EXAL and PLL is not selected
56852 Technical Data, Rev. 8
16
Freescale Semiconductor
DC Electrical Characteristics
Table 4-3 Thermal Characteristics1
Characteristic
81-pin MAPBGA
Symbol
Value
Unit
Thermal resistance junction-to-ambient
(estimated)
θJA
36.9
°C/W
I/O pin power dissipation
PI/O
User Determined
W
Power dissipation
PD
PD = (IDD × VDD) + PI/O
W
PDMAX
(TJ – TA) / RθJA2
W
Maximum allowed PD
1. See Section 6.1 for more detail.
2. TJ = Junction Temperature
TA = Ambient Temperature
4.2 DC Electrical Characteristics
Table 4-4 DC Electrical Characteristics
Operating Conditions: VSS = VSSIO = VSSA = 0V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0–3.6V, TA = –40° to +120°C, CL < 50pF, fop = 120MHz
Characteristic
Symbol
Min
Typ
Max
Unit
Input high voltage (XTAL/EXTAL)
VIHC
VDDA – 0.8
VDDA
VDDA + 0.3
V
Input low voltage (XTAL/EXTAL)
VILC
-0.3
—
0.5
V
Input high voltage
VIH
2.0
—
5.5
V
Input low voltage
VIL
-0.3
—
0.8
V
Input current low (pullups disabled)
IIL
-1
—
1
μA
Input current high (pullups disabled)
IIH
-1
—
1
μA
Output tri-state current low
IOZL
-10
—
10
μA
Output tri-state current high
IOZH
-10
—
10
μA
Output High Voltage at IOH
VOH
VDDIO – 0.7
—
—
V
Output Low Voltage at IOL
VOL
—
—
0.4
V
Output High Current at VOH
IOH
8
—
16
mA
Output Low Current at VOL
IOL
8
—
16
mA
Input capacitance
CIN
—
8
—
pF
COUT
—
12
—
pF
Output capacitance
56852 Technical Data, Rev. 8
Freescale Semiconductor
17
Table 4-4 DC Electrical Characteristics (Continued)
Operating Conditions: VSS = VSSIO = VSSA = 0V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0–3.6V, TA = –40° to +120°C, CL < 50pF, fop = 120MHz
Characteristic
Symbol
VDD supply current (Core logic, memories, peripherals)
IDD4
1
Run
Deep Stop2
Light Stop3
VDDIO supply current (I/O circuity)
Run
Deep Stop2
Deep Stop
Typ
Max
Unit
—
—
—
55
0.02
3.4
70
2.5
8
mA
mA
mA
—
—
40
0
50
300
mA
μA
—
60
120
μA
IDDIO
5
VDDA supply current (analog circuity)
Min
IDDA
2
Low Voltage Interrupt6
VEI
—
2.5
2.85
V
Low Voltage Interrupt Recovery Hysteresis
VEIH
—
50
—
mV
Power on Reset7
POR
—
1.5
2.0
V
Note: Run (operating) IDD measured using external square wave clock source (fosc = 4MHz) into XTAL. All inputs 0.2V from rail;
no DC loads; outputs unloaded. All ports configured as inputs; measured with all modules enabled. PLL set to 240MHz out.
1. Running Core, performing 50% NOP and 50% FIR. Clock at 120 MHz.
2. Deep Stop Mode - Operation frequency = 4 MHz, PLL set to 4 MHz, crystal oscillator.
3. Light Stop Mode - Operation frequency = 120 MHz, PLL set to 240 MHz, crystal oscillator.
4. IDD includes current for core logic, internal memories, and all internal peripheral logic circuitry.
5. Running core and performing external memory access. Clock at 120 MHz.
6. When VDD drops below VEI max value, an interrupt is generated.
7. Power-on reset occurs whenever the digital supply drops below 1.8V. While power is ramping up, this signal remains active
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
100mV less than VDD during ramp up until 2.5V is reached, at which time it self-regulates.
56852 Technical Data, Rev. 8
18
Freescale Semiconductor
Supply Voltage Sequencing and Separation Cautions
150
EMI Mode5
MAC Mode1
120
IDD (mA)
90
60
30
0
20
40
60
80
100
120
Figure 4-1 Maximum Run IDDTOTAL vs. Frequency (see Notes 1. and 5. in Table 4-4)
4.3 Supply Voltage Sequencing and Separation Cautions
DC Power Supply Voltage
Figure 4-2 shows two situations to avoid in sequencing the VDD and VDDIO, VDDA supplies.
3.3V
VDDIO, VDDA
2
1.8V
Supplies Stable
VDD
1
Time
0
Note:
1. VDD rising before VDDIO, VDDA
2. VDDIO, VDDA rising much faster than VDD
Figure 4-2 Supply Voltage Sequencing and Separation Cautions
56852 Technical Data, Rev. 8
Freescale Semiconductor
19
VDD should not be allowed to rise early (1). This is usually avoided by running the regulator for the VDD
supply (1.8V) from the voltage generated by the 3.3V VDDIO supply, see Figure 4-3. This keeps VDD from
rising faster than VDDIO.
VDD should not rise so late that a large voltage difference is allowed between the two supplies (2).
Typically this situation is avoided by using external discrete diodes in series between supplies, as shown
in Figure 4-3. The series diodes forward bias when the difference between VDDIO and VDD reaches
approximately 2.1, causing VDD to rise as VDDIO ramps up. When the VDD regulator begins proper
operation, the difference between supplies will typically be 0.8V and conduction through the diode chain
reduces to essentially leakage current. During supply sequencing, the following general relationship
should be adhered to:
VDDIO > VDD > (VDDIO - 2.1V)
In practice, VDDA is typically connected directly to VDDIO with some filtering.
Supply
VDDIO, VDDA
3.3V
Regulator
VDD
1.8V
Regulator
Figure 4-3 Example Circuit to Control Supply Sequencing
4.4 AC Electrical Characteristics
Timing waveforms in Section 4.2 are tested with a VIL maximum of 0.8V and a VIH minimum of 2.0V for
all pins except XTAL, which is tested using the input levels in Section 4.2. In Figure 4-4 the levels of
VIH and VIL for an input signal are shown.
Low
VIH
Input Signal
High
90%
50%
10%
Midpoint1
VIL
Fall Time
Rise Time
Note: The midpoint is VIL + (VIH – VIL)/2.
Figure 4-4 Input Signal Measurement References
56852 Technical Data, Rev. 8
20
Freescale Semiconductor
External Clock Operation
Figure 4-5 shows the definitions of the following signal states:
•
•
•
Active state, when a bus or signal is driven, and enters a low impedance state
Tri-stated, when a bus or signal is placed in a high impedance state
Data Valid state, when a signal level has reached VOL or VOH
•
Data Invalid state, when a signal level is in transition between VOL and VOH
Data2 Valid
Data1 Valid
Data1
Data3 Valid
Data2
Data3
Data
Tri-stated
Data Invalid State
Data Active
Data Active
Figure 4-5 Signal States
4.5 External Clock Operation
The 56852 system clock can be derived from a crystal or an external system clock signal. To generate a
reference frequency using the internal oscillator, a reference crystal must be connected between the
EXTAL and XTAL pins.
4.5.1
Crystal Oscillator for Use with PLL
The internal oscillator is designed to interface with a parallel-resonant crystal resonator in the frequency
range specified for the external crystal in Table 4-6. In Figure 4-6 a typical crystal oscillator circuit is
shown. Follow the crystal supplier’s recommendations when selecting a crystal, because crystal
parameters determine the component values required to provide maximum stability and reliable start-up.
The crystal and associated components should be mounted as close as possible to the EXTAL and XTAL
pins to minimize output distortion and start-up stabilization time.
Crystal Frequency = 2–4MHz (optimized for 4MHz)
EXTAL XTAL
Rz
Sample External Crystal
Parameters:
Rz = 10MΩ
TOD_SEL bit in CGM may be set to
0 or 1. 0 is recommended.
Figure 4-6 Crystal Oscillator
56852 Technical Data, Rev. 8
Freescale Semiconductor
21
4.5.2
High Speed External Clock Source (> 4MHz)
The recommended method of connecting an external clock is given in Figure 4-7. The external clock
source is connected to XTAL and the EXTAL pin is held at ground (recommended), VDDA, or VDDA/2.
The TOD_SEL bit in CGM must be set to 1.
56852
XTAL
EXTAL
GND,VDDA,
External
Clock
or VDDA/2
(up to 240MHz)
Figure 4-7 Connecting a High Speed External Clock Signal using XTAL
4.5.3
Low Speed External Clock Source (2-4MHz)
The recommended method of connecting an external clock is given in Figure 4-8. The external clock
source is connected to XTAL and the EXTAL pin is held at VDDA/2. The TOD_SEL bit in CGM may be
set to 0 or 1. 0 is recommended.
56852
XTAL
EXTAL
External
Clock
(2-4MHz)
VDDA/2
Figure 4-8 Connecting a Low Speed External Clock Signal using XTAL
Table 4-5 External Clock Operation Timing Requirements4
Operating Conditions: VSS = VSSIO = VSSA = 0V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0–3.6V, TA = –40° to +120°C, CL £ 50pF, fop = 120MHz
Characteristic
Symbol
Min
Typ
Max
Unit
Frequency of operation (external clock driver)1
fosc
0
—
240
MHz
Clock Pulse Width4
tPW
6.25
—
—
ns
External clock input rise time2, 4
trise
—
—
TBD
ns
External clock input fall time3, 4
tfall
—
—
TBD
ns
1. See Figure 4-7 for details on using the recommended connection of an external clock driver.
2. External clock input rise time is measured from 10 to 90 percent.
3. External clock input fall time is measured from 90 to 10percent.
4. Parameters listed are guaranteed by design.
56852 Technical Data, Rev. 8
22
Freescale Semiconductor
External Memory Interface Timing
VIH
External
Clock
90%
50%
10%
tPW
90%
50%
10%
tPW
trise
tfall
VIL
Note: The midpoint is VIL + (VIH – VIL)/2.
Figure 4-9 External Clock Timing
Table 4-6 PLL Timing
Operating Conditions: VSS = VSSIO = VSSA = 0V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0–3.6V, TA = –40° to +120°C, CL £ 50pF, fop = 120MHz
Characteristic
Symbol
Min
Typ
Max
Unit
External reference crystal frequency for the PLL1
fosc
2
4
4
MHz
PLL output frequency
fclk
40
—
240
MHz
PLL stabilization time 2
tplls
—
1
10
ms
1. An externally supplied reference clock should be as free as possible from any phase jitter for the PLL to work correctly.
The PLL is optimized for 4MHz input crystal.
2. This is the minimum time required after the PLL setup is changed to ensure reliable operation.
4.6 External Memory Interface Timing
The External Memory Interface is designed to access static memory and peripheral devices. Figure 4-10
shows sample timing and parameters that are detailed in Table 4-7.
The timing of each parameter consists of both a fixed delay portion and a clock related portion; as well as
user controlled wait states. The equation:
t = D + P * (M + W)
should be used to determine the actual time of each parameter. The terms in the above equation are defined as:
t parameter delay time
D fixed portion of the delay, due to on-chip path delays.
P the period of the system clock, which determines the execution rate of the part (i.e. when the device is
operating at 120 MHz, P = 8.33 ns).
M Fixed portion of a clock period inherent in the design. This number is adjusted to account for possible
clock duty cycle derating.
W the sum of the applicable wait state controls. See the “Wait State Controls” column of Table 4-7 for
the applicable controls for each parameter. See the EMI chapter of the 83x Peripheral Manual for
details of what each wait state field controls.
56852 Technical Data, Rev. 8
Freescale Semiconductor
23
Some of the parameters contain two sets of numbers. These parameters have two different paths and
clock edges that must be considered. Check both sets of numbers and use the smaller result. The
appropriate entry may change if the operating frequency of the part changes.
The timing of write cycles is different when WWS = 0 than when WWS > 0. Therefore, some parameters
contain two sets of numbers to account for this difference. The “Wait States Configuration” column of
Table 4-7 should be used to make the appropriate selection.
A0-Axx,CS
tRD
tARDD
tARDA
tRDA
tRDRD
RD
tWAC
tAWR
tWRWR
tWRRD
tWR
tRDWR
WR
tDWR
D0-D15
tDOS
tDOH
tAD
Data Out
tRDD
tDRD
Data In
Note: During read-modify-write instructions and internal instructions, the address lines do not change state.
Figure 4-10 External Memory Interface Timing
56852 Technical Data, Rev. 8
24
Freescale Semiconductor
External Memory Interface Timing
Table 4-7 External Memory Interface Timing
Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98 V, VDDIO = VDDA = 3.0–3.6V, TA = –40° to +120°C, CL ≤ 50pF, P = 8.333ns
Characteristic
Address Valid to WR Asserted
WR Width Asserted to WR Deasserted
Symbol
Wait States
Configuration
D
M
WWS=0
-0.75
0.50
WWS>0
-1.50
0.69
WWS=0
-0.52
0.19
WWS>0
-0.13
0.00
WWS=0
-1.86
0.00
WWS=0
- 6.03
0.25
WWS>0
-1.73
0.19
WWS>0
-4.29
0.50
-1.71
0.25
-2.38
0.19
-4.42
0.50
tAWR
tWR
Data Out Valid to WR Asserted
tDWR
Wait States
Controls
Unit
WWSS
ns
WWS
ns
WWSS
ns
WWSH
ns
Valid Data Out Hold Time after WR
Deasserted
tDOH
Valid Data Out Set Up Time to WR
Deasserted
tDOS
Valid Address after WR Deasserted
tWAC
-1.44
0.25
WWSH
RD Deasserted to Address Invalid
tRDA
- 0.51
0.00
RWSH
ns
Address Valid to RD Deasserted
tARDD
-2.03
1.00
RWSS,RWS
ns
Valid Input Data Hold after RD
Deasserted
tDRD
0.00
N/A1
—
ns
RD Assertion Width
tRD
-0.97
1.00
RWS
ns
-10.13
1.00
-13.22
1.19
RWSS,RWS
ns
- 1.06
0.00
RWSS
ns
-9.06
1.00
-12.65
1.19
RWSS,RWS
ns
Address Valid to Input Data Valid
Address Valid to RD Asserted
RD Asserted to Input Data Valid
tAD
tARDA
tRDD
WWS,WWSS
ns
WR Deasserted to RD Asserted
tWRRD
-0.70
0.25
WWSH,RWSS
ns
RD Deasserted to RD Asserted
tRDRD
-0.172
0.00
RWSS,RWSH
ns
WWS=0
-0.47
0.75
WWS>0
-0.07
1.00
WWSS, WWSH
ns
0.10
0.50
-0.31
0.69
MDAR, BMDAR,
RWSH, WWSS
ns
WR Deasserted to WR Asserted
RD Deasserted to WR Asserted
tWRWR
tRDWR
1. N/A since device captures data before it deasserts RD
2. If RWSS = RWSH = 0, RD does not deassert during back-to-back reads and D = 0.00 should be used.
56852 Technical Data, Rev. 8
Freescale Semiconductor
25
4.7 Reset, Stop, Wait, Mode Select, and Interrupt Timing
Table 4-8 Reset, Stop, Wait, Mode Select, and Interrupt Timing
1, 2
Operating Conditions: VSS = VSSIO = VSSA = 0V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0–3.6V, TA = –40° to +120°C, CL < 50pF, fop = 120MHz
Characteristic
Symbol
Min
Max
Unit
See Figure
RESET Assertion to Address, Data and Control Signals
High Impedance
tRAZ
—
11
ns
4-11
Minimum RESET Assertion Duration3
tRA
30
—
ns
4-11
RESET Deassertion to First External Address Output
tRDA
—
120T
ns
4-11
Edge-sensitive Interrupt Request Width
tIRW
1T + 3
—
ns
4-12
IRQA, IRQB Assertion to External Data Memory Access
Out Valid, caused by first instruction execution in the
interrupt service routine
tIDM
18T
—
ns
4-13
tIDM -FAST
14T
—
tIG
18T
—
ns
4-13
tIG -FAST
14T
—
tIRI
22T
—
ns
4-14
tIRI -FAST
18T
—
IRQA, IRQB Assertion to General Purpose Output Valid,
caused by first instruction execution in the interrupt
service routine
IRQA Low to First Valid Interrupt Vector Address Out
recovery from Wait State4
Delay from IRQA Assertion (exiting Stop) to External
Data Memory5
tIW
Delay from IRQA Assertion (exiting Wait) to External
Data Memory
Fast6
Normal7
tIF
RSTO pulse width8
normal operation
internal reset mode
1.5T
ns
4-15
4-15
18T
22ET
tRSTO
—
—
—
ns
ns
4-16
128ET
8ET
—
—
—
—
1. In the formulas, T = clock cycle. For fop = 120MHz operation and fipb = 60MHz, T = 8.33ns.
2. Parameters listed are guaranteed by design.
3. At reset, the PLL is disabled and bypassed. The part is then put into run mode and tclk assumes the period of the source clock, txtal,
textal or tosc.
4. The minimum is specified for the duration of an edge-sensitive IRQA interrupt required to recover from the Stop state. This is not
the minimum required so that the IRQA interrupt is accepted.
5. The interrupt instruction fetch is visible on the pins only in Mode 3.
6. Fast stop mode:
Fast stop recovery applies when external clocking is in use (direct clocking to XTAL) or when fast stop mode recovery is requested
(OMR bit 6 is set to 1). In both cases the PLL and the master clock are unaffected by stop mode entry. Recovery takes one less cycle
and tclk will continue same value it had before stop mode was entered.
7. Normal stop mode:
As a power saving feature, normal stop mode disables and bypasses the PLL. Stop mode will then shut down the master clock,
recovery will take an extra cycle (to restart the clock), and tclk will resume at the input clock source rate.
8. ET = External Clock period, For an external crystal frequency of 8MHz, ET=125 ns.
56852 Technical Data, Rev. 8
26
Freescale Semiconductor
Reset, Stop, Wait, Mode Select, and Interrupt Timing
RESET
tRA
tRAZ
tRDA
A0–A20,
D0–D15
First Fetch
CS,
RD, WR
First Fetch
Figure 4-11 Asynchronous Reset Timing
IRQA
IRQB
tIRW
Figure 4-12 External Interrupt Timing (Negative-Edge-Sensitive)
A0–A20,
CS,
RD, WR
First Interrupt Instruction Execution
tIDM
IRQA,
IRQB
a) First Interrupt Instruction Execution
Purpose
I/O Pin
tIG
IRQA,
IRQB
b) General Purpose I/O
Figure 4-13 External Level-Sensitive Interrupt Timing
56852 Technical Data, Rev. 8
Freescale Semiconductor
27
IRQA,
IRQB
tIRI
A0–A20,
CS,
RD, WR
First Interrupt Vector
Instruction Fetch
Figure 4-14 Interrupt from Wait State Timing
tIW
IRQA
tIF
A0–A20,
CS,
RD, WR
First Instruction Fetch
Not IRQA Interrupt Vector
Figure 4-15 Recovery from Stop State Using Asynchronous Interrupt Timing
RESET
tRSTO
Figure 4-16 Reset Output Timing
56852 Technical Data, Rev. 8
28
Freescale Semiconductor
Serial Peripheral Interface (SPI) Timing
4.8 Serial Peripheral Interface (SPI) Timing
Table 4-9 SPI Timing1
Operating Conditions: VSS = VSSIO = VSSA = 0V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0–3.6V, TA = –40° to +120°C, CL < 50pF, fop = 120MHz
Characteristic
Symbol
Cycle time
Master
Slave
tC
Enable lead time
Master
Slave
tELD
Enable lag time
Master
Slave
tELG
Clock (SCLK) high time
Master
Slave
tCH
Clock (SCLK) low time
Master
Slave
tCL
Data setup time required for inputs
Master
Slave
tDS
Data hold time required for inputs
Master
Slave
tDH
Access time (time to data active from high-impedance
state)
Slave
tA
Disable time (hold time to high-impedance state)
Slave
tD
Data Valid for outputs
Master
Slave (after enable edge)
tDV
Data invalid
Master
Slave
tDI
Rise time
Master
Slave
tR
Fall time
Master
Slave
tF
Min
Max
Unit
See
Figure
4-17, 4-18,
4-19, 4-20
25
25
—
—
ns
ns
—
12.5
—
—
ns
ns
—
12.5
—
—
ns
ns
9
12.5
—
—
12
12.5
—
—
ns
ns
10
2
—
—
ns
ns
0
2
—
—
ns
ns
15
ns
ns
4-20
5
9
ns
ns
4-20
2
—
—
2
14
ns
ns
0
0
—
—
ns
ns
—
—
11.5
10.0
ns
ns
—
—
9.7
9.0
ns
ns
4-20
4-20
ns
ns
4-17, 4-18,
4-19, 4-20
4-20
4-17, 4-18,
4-19, 4-20
4-17, 4-18,
4-19, 4-20
4-17, 4-18,
4-19, 4-20
4-17, 4-18,
4-19, 4-20
4-17, 4-18,
4-19, 4-20
4-17, 4-18,
4-19, 4-20
1. Parameters listed are guaranteed by design.
56852 Technical Data, Rev. 8
Freescale Semiconductor
29
SS
SS is held High on master
(Input)
tC
tR
tF
tCL
SCLK (CPOL = 0)
(Output)
tCH
tF
tR
tCL
SCLK (CPOL = 1)
(Output)
tDH
tDS
MISO
(Input)
tCH
tCH
MSB in
Bits 14–1
tDI(ref)
tDV
tDI
MOSI
(Output)
LSB in
Master MSB out
Bits 14–1
Master LSB out
tR
tF
Figure 4-17 SPI Master Timing (CPHA = 0)
SS
(Input)
SS is held High on master
tC
tF
tCL
SCLK (CPOL = 0)
(Output)
tCH
tF
tCL
SCLK (CPOL = 1)
(Output)
tCH
MISO
(Input)
MSB in
tDS
tR
tDH
Bits 14–1
tDI
tDV(ref)
MOSI
(Output)
tR
Master MSB out
LSB in
tDV
Bits 14– 1
tF
Master LSB out
tR
Figure 4-18 SPI Master Timing (CPHA = 1)
56852 Technical Data, Rev. 8
30
Freescale Semiconductor
Serial Peripheral Interface (SPI) Timing
SS
(Input)
tC
tF
tR
tCL
SCLK (CPOL = 0)
(Input)
tELG
tCH
tELD
tCL
SCLK (CPOL = 1)
(Input)
tA
tCH
MISO
(Output)
Slave MSB out
tDS
tDH
MOSI
(Input)
MSB in
tF
tR
Bits 14–1
Slave LSB out
tDV
tDI
Bits 14–1
tD
tDI
LSB in
Figure 4-19 SPI Slave Timing (CPHA = 0)
SS
(Input)
tF
tC
tR
tCL
SCLK (CPOL = 0)
(Input)
tCH
tELG
tELD
SCLK (CPOL = 1)
(Input)
tCL
tDV
tA
MISO
(Output)
tF
tCH
Slave MSB out
tR
Bits 14–1
tDV
tDS
tD
Slave LSB out
tDI
tDH
MOSI
(Input)
MSB in
Bits 14–1
LSB in
Figure 4-20 SPI Slave Timing (CPHA = 1)
56852 Technical Data, Rev. 8
Freescale Semiconductor
31
4.9 Quad Timer Timing
Table 4-10 Timer Timing1, 2
Operating Conditions: VSS = VSSIO = VSSA = 0V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0–3.6V, TA = –40° to +120°C, CL ≤ 50pF, fop = 120MHz
Characteristic
Symbol
Min
Max
Unit
PIN
2T + 3
—
ns
Timer input high/low period
PINHL
1T + 3
—
ns
Timer output period
POUT
2T - 3
—
ns
POUTHL
1T - 3
—
ns
Timer input period
Timer output high/low period
1.
In the formulas listed, T = clock cycle. For fop = 120MHz operation and fipb = 60MHz, T = 8.33ns
2. Parameters listed are guaranteed by design.
Timer Inputs
PIN
PINHL
PINHL
POUT
POUTHL
POUTHL
Timer Outputs
Figure 4-21 Timer Timing
56852 Technical Data, Rev. 8
32
Freescale Semiconductor
Synchronous Serial Interface (SSI) Timing
4.10 Synchronous Serial Interface (SSI) Timing
Table 4-11 SSI Master Mode1 Switching Characteristics
Operating Conditions: VSS = VSSIO = VSSA = 0V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0–3.6V, TA = –40° to +120°C, CL < 50pF, fop = 120MHz
Parameter
Symbol
STCK frequency
Min
Typ
fs
Max
Units
152
MHz
STCK period3
tSCKW
66.7
ns
STCK high time
tSCKH
33.4
ns
STCK low time
tSCKL
33.4
ns
4
Output clock rise/fall time
ns
Delay from STCK high to STFS (bl) high - Master4
tTFSBHM
-1.0
-0.1
ns
Delay from STCK high to STFS (wl) high - Master4
tTFSWHM
-1.0
-0.1
ns
Delay from SRCK high to SRFS (bl) high - Master4
tRFSBHM
0.1
1.0
ns
Delay from SRCK high to SRFS (wl) high - Master4
tRFSWHM
0.1
1.0
ns
Delay from STCK high to STFS (bl) low - Master4
tTFSBLM
-1.0
-0.1
ns
Delay from STCK high to STFS (wl) low - Master4
tTFSWLM
-1.0
-0.1
ns
Delay from SRCK high to SRFS (bl) low - Master4
tRFSBLM
-0.1
0.1
ns
Delay from SRCK high to SRFS (wl) low - Master4
tRFSWLM
-0.1
0.1
ns
STCK high to STXD enable from high impedance - Master
tTXEM
0
1
ns
STCK high to STXD valid - Master
tTXVM
0
1
ns
STCK high to STXD not valid - Master
tTXNVM
-0.1
0
ns
STCK high to STXD high impedance - Master
tTXHIM
-4
0
ns
SRXD Setup time before SRCK low - Master
tSM
4
ns
SRXD Hold time after SRCK low - Master
tHM
4
ns
Synchronous Operation (in addition to standard internal clock parameters)
SRXD Setup time before STCK low - Master
tTSM
4
SRXD Hold time after STCK low - Master
tTHM
4
1. Master mode is internally generated clocks and frame syncs
56852 Technical Data, Rev. 8
Freescale Semiconductor
33
2. Max clock frequency is IP_clk/4 = 60MHz / 4 = 15MHz for a 120MHz part.
3. All the timings for the SSI are given for a non-inverted serial clock polarity (TSCKP=0 in SCR2 and RSCKP=0 in SCSR)
and a non-inverted frame sync (TFSI=0 in SCR2 and RFSI=0 in SCSR). If the polarity of the clock and/or the frame sync has
been inverted, all the timings remain valid by inverting the clock signal STCK/SRCK and/or the frame sync STFS/SRFS in the
tables and in the figures.
4. bl = bit length; wl = word length
tSCKH
tSCKW
tSCKL
STCK output
tTFSBHM
tTFSBLM
STFS (bl) output
tTFSWHM
tTFSWLM
STFS (wl) output
tTXVM
tTXEM
tTXNVM
tTXHIM
First Bit
STXD
Last Bit
SRCK output
tRFSBHM
tRFBLM
SRFS (bl) output
tRFSWHM
tRFSWLM
SRFS (wl) output
tSM
tHM
tTSM
tTHM
SRXD
Figure 4-22 Master Mode Timing Diagram
56852 Technical Data, Rev. 8
34
Freescale Semiconductor
Synchronous Serial Interface (SSI) Timing
Table 4-12 SSI Slave Mode1 Switching Characteristics
Operating Conditions: VSS = VSSIO = VSSA = 0V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0–3.6V, TA = –40° to +120°C, CL ≤ 50pF, fop = 120MHz
Parameter
Symbol
STCK frequency
Min
Typ
fs
Max
Units
152
MHz
STCK period3
tSCKW
66.7
ns
STCK high time
tSCKH
33.44
ns
STCK low time
tSCKL
33.44
ns
Output clock rise/fall time
4
ns
Delay from STCK high to STFS (bl) high - Slave5
tTFSBHS
-1
29
ns
Delay from STCK high to STFS (wl) high - Slave5
tTFSWHS
-1
29
ns
Delay from SRCK high to SRFS (bl) high - Slave5
tRFSBHS
-1
29
ns
Delay from SRCK high to SRFS (wl) high - Slave5
tRFSWHS
-1
29
ns
Delay from STCK high to STFS (bl) low - Slave5
tTFSBLS
-29
29
ns
Delay from STCK high to STFS (wl) low - Slave5
tTFSWLS
-29
29
ns
Delay from SRCK high to SRFS (bl) low - Slave5
tRFSBLS
-29
29
ns
Delay from SRCK high to SRFS (wl) low - Slave5
tRFSWLS
-29
29
ns
STCK high to STXD enable from high impedance - Slave
tTXES
—
15
ns
STCK high to STXD valid - Slave
tTXVS
4
15
ns
STFS high to STXD enable from high impedance (first bit) Slave
tFTXES
4
15
ns
STFS high to STXD valid (first bit) - Slave
tFTXVS
4
15
ns
STCK high to STXD not valid - Slave
tTXNVS
4
15
ns
STCK high to STXD high impedance - Slave
tTXHIS
4
15
ns
SRXD Setup time before SRCK low - Slave
tSS
4
—
ns
56852 Technical Data, Rev. 8
Freescale Semiconductor
35
Table 4-12 SSI Slave Mode1 Switching Characteristics (Continued)
Operating Conditions: VSS = VSSIO = VSSA = 0V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0–3.6V, TA = –40° to +120°C, CL ≤ 50pF, fop = 120MHz
Parameter
Symbol
Min
tHS
SRXD Hold time after SRCK low - Slave
Typ
Max
Units
4
—
ns
Synchronous Operation (in addition to standard external clock parameters)
SRXD Setup time before STCK low - Slave
tTSS
4
—
?
SRXD Hold time after STCK low - Slave
tTHS
4
—
?
1. Slave mode is externally generated clocks and frame syncs
2. Max clock frequency is IP_clk/4 = 60MHz / 4 = 15MHz for a 120MHz part.
3. All the timings for the SSI are given for a non-inverted serial clock polarity (TSCKP=0 in SCR2 and RSCKP=0 in SCSR)
and a non-inverted frame sync (TFSI=0 in SCR2 and RFSI=0 in SCSR). If the polarity of the clock and/or the frame sync has
been inverted, all the timings remain valid by inverting the clock signal STCK/SRCK and/or the frame sync STFS/SRFS in the
tables and in the figures.
4. 50 percent duty cycle
5. bl = bit length; wl = word length
tSCKW
tSCKH
tSCKL
STCK input
tTFSBLS
tTFSBHS
STFS (bl) input
tTFSWHS
tTFSWLS
STFS (wl) input
tFTXVS
tFTXES
tTXNVS
tTXVS
tTXES
tTXHIS
First Bit
STXD
SRCK input
Last Bit
tRFSBLS
tRFSBHS
SRFS (bl) input
tRFSWHS
tRFSWLS
SRFS (wl) input
tSS
tHS
tTSS
tTHS
SRXD
Figure 4-23 Slave Mode Clock Timing
56852 Technical Data, Rev. 8
36
Freescale Semiconductor
Serial Communication Interface (SCI) Timing
4.11 Serial Communication Interface (SCI) Timing
Table 4-13 SCI Timing4
Operating Conditions: VSS = VSSIO = VSSA = 0V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0–3.6V, TA = –40° to +120°C, CL ≤ 50pF, fop = 120MHz
Characteristic
Symbol
Min
Max
Unit
BR
—
(fMAX)/(32)
Mbps
RXD2 Pulse Width
RXDPW
0.965/BR
1.04/BR
ns
TXD3 Pulse Width
TXDPW
0.965/BR
1.04/BR
ns
Baud Rate1
1. fMAX is the frequency of operation of the system clock in MHz.
2. The RXD pin in SCI0 is named RXD0 and the RXD pin in SCI1 is named RXD1.
3. The TXD pin in SCI0 is named TXD0 and the TXD pin in SCI1 is named TXD1.
4. Parameters listed are guaranteed by design.
RXD
SCI receive
data pin
(Input)
RXDPW
Figure 4-24 RXD Pulse Width
TXD
SCI receive
data pin
(Input)
TXDPW
Figure 4-25 TXD Pulse Width
MSCAN_RX
CAN receive
data pin
(Input)
T WAKE-UP
Figure 4-26 Bus Wake-up Detection
56852 Technical Data, Rev. 8
Freescale Semiconductor
37
4.12 JTAG Timing
Table 4-14 JTAG Timing1, 3
Operating Conditions: VSS = VSSIO = VSSA = 0V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0–3.6V, TA = –40° to +120°C, CL ≤ 50pF, fop = 120MHz
Characteristic
Symbol
Min
Max
Unit
fOP
DC
30
MHz
TCK cycle time
tCY
33.3
—
ns
TCK clock pulse width
tPW
16.6
—
ns
TMS, TDI data setup time
tDS
3
—
ns
TMS, TDI data hold time
tDH
3
—
ns
TCK low to TDO data valid
tDV
—
12
ns
TCK low to TDO tri-state
tTS
—
10
ns
tTRST
35
—
ns
tDE
4T
—
ns
TCK frequency of operation
2
TRST assertion time
DE assertion time
1. Timing is both wait state and frequency dependent. For the values listed, T = clock cycle. For120MHz
operation, T = 8.33 ns
2. TCK frequency of operation must be less than 1/4 the processor rate.
3. Parameters listed are guaranteed by design.
tCY
tPW
tPW
VIH
VM
TCK
(Input)
VM = VIL + (VIH – VIL)/2
VM
VIL
Figure 4-27 Test Clock Input Timing Diagram
56852 Technical Data, Rev. 8
38
Freescale Semiconductor
JTAG Timing
TCK
(Input)
tDS
TDI
TMS
(Input)
tDH
Input Data Valid
tDV
TDO
(Output)
Output Data Valid
tTS
TDO
(Output)
tDV
TDO
(Output)
Output Data Valid
Figure 4-28 Test Access Port Timing Diagram
TRST
(Input)
tTRST
Figure 4-29 TRST Timing Diagram
DE
tDE
Figure 4-30 Enhanced OnCE—Debug Event
56852 Technical Data, Rev. 8
Freescale Semiconductor
39
4.13 GPIO Timing
Table 4-15 GPIO Timing
Operating Conditions: VSS = VSSIO = VSSA = 0V, VDD = 1.7-1.9V, VDDIO = VDDA = 3.0–3.6V, TA = –40° to +120°C, CL ≤ 50pF, fop = 120MHz
Characteristic
Symbol
Min
Max
Unit
PIN
2T + 3
—
ns
GPIO input high/low period
PINHL
1T + 3
—
ns
GPIO output period
POUT
2T - 3
—
ns
POUTHL
1T - 3
—
ns
PIN
PINHL
PINHL
POUT
POUTHL
POUTHL
GPIO input period
GPIO output high/low period
GPIO Inputs
GPIO Outputs
Figure 4-31 GPIO Timing
56852 Technical Data, Rev. 8
40
Freescale Semiconductor
GPIO Timing
Part 5 56852 Packaging & Pinout Information
This section contains package and pin-out information for the 81-pin MAPBGA configuration of the 56852.
METALLIZED MARK FOR
PIN 1 IDENTIFICATION
IN THIS AREA
9
8
D15
TD0
7
6
5
4
3
VDDIO
SCK
2
1
A
XTAL
EXTAL
VSSIO
GPIOC1
IRQA
B
VDDIO
DE
TDI
VSSA
VDDA
RXD
SS
GPIOC0
VSSIO
C
VSSIO
D14
TMS
TCK
D13
D11
D12
TRST
MOSI
MISO
CS2
IRQB
VDDIO
RESET
TXD
CS1
CS0
VSS
D
E
VDD
D8
D9
D10
A16
A0
WR
RD
VDD
VSS
D5
D6
A17
A14
A3
A2
A1
A4
VDDIO
D3
D0
D7
A18
A12
A5
A6
VSSIO
F
G
H
D4
D2
D1
A19
A15
A11
A9
A8
VDDIO
VSSIO
CLKO
VDDIO
VSSIO
VDD
VSS
A13
A10
A7
J
Figure 5-1 Bottom-View, 56852 81-pin MAPBGA Package
56852 Technical Data, Rev. 8
Freescale Semiconductor
41
Table 5-1 56852 Pin Identification by Pin Number
Pin No.
Signal Name
Pin No.
Signal Name
Pin No.
Signal Name
Pin No.
Signal Name
E4
A0
D2
CS0
A6
EXTAL
H1
VDDIO
F2
A1
D3
CS1
B6
VSSA
J7
VDDIO
F3
A2
C3
CS2
D1
VSS
G9
VDDIO
F4
A3
G7
D0
J4
VSS
B9
VDDIO
F1
A4
H7
D1
F9
VSS
A4
VDDIO
G3
A5
H8
D2
B1
VSSIO
E2
RD
G2
A6
G8
D3
G1
VSSIO
D5
RESET
J1
A7
H9
D4
J6
VSSIO
B4
RXD
H2
A8
F8
D5
J9
VSSIO
A3
SCK
H3
A9
F7
D6
C9
VSSIO
A2
GPIOC1
J2
A10
G6
D7
A5
VSSIO
B3
SS
H4
A11
E8
D8
A1
IRQA
B2
GPIOC0
G4
A12
E7
D9
C2
IRQB
C6
TCK
J3
A13
E6
D10
C4
MISO
B7
TDI
F5
A14
D8
D11
C5
MOSI
A8
TDO
H5
A15
D7
D12
B5
VDDA
C7
TMS
E5
A16
D9
D13
E1
VDD
D6
TRST
F6
A17
C8
D14
J5
VDD
D4
TXD
G5
A18
A9
D15
E9
VDD
E3
WR
H6
A19
B8
DE
C1
VDDIO
A7
XTAL
J8
CLKO
-
-
-
-
-
-
56852 Technical Data, Rev. 8
42
Freescale Semiconductor
Thermal Design Considerations
Part 6 Design Considerations
6.1 Thermal Design Considerations
An estimation of the chip junction temperature, TJ, in °C can be obtained from the equation:
Equation 1: TJ = TA + (PD x RθJA)
Where:
TA = ambient temperature °C
RθJA = package junction-to-ambient thermal resistance °C/W
PD = power dissipation in package
Historically, thermal resistance has been expressed as the sum of a junction-to-case thermal resistance and
a case-to-ambient thermal resistance:
Equation 2: RθJA = RθJC + RθCA
Where:
RθJA = package junction-to-ambient thermal resistance °C/W
RθJC = package junction-to-case thermal resistance °C/W
RθCA = package case-to-ambient thermal resistance °C/W
RθJC is device-related and cannot be influenced by the user. The user controls the thermal environment to
change the case-to-ambient thermal resistance, RθCA. For example, the user can change the air flow around
the device, add a heat sink, change the mounting arrangement on the Printed Circuit Board (PCB), or
otherwise change the thermal dissipation capability of the area surrounding the device on the PCB. This
model is most useful for ceramic packages with heat sinks; some 90% of the heat flow is dissipated through
the case to the heat sink and out to the ambient environment. For ceramic packages, in situations where
the heat flow is split between a path to the case and an alternate path through the PCB, analysis of the
device thermal performance may need the additional modeling capability of a system level thermal
simulation tool.
The thermal performance of plastic packages is more dependent on the temperature of the PCB to which
the package is mounted. Again, if the estimations obtained from RθJA do not satisfactorily answer whether
the thermal performance is adequate, a system level model may be appropriate.
A complicating factor is the existence of three common definitions for determining the junction-to-case
thermal resistance in plastic packages:
•
•
•
Measure the thermal resistance from the junction to the outside surface of the package (case) closest to the
chip mounting area when that surface has a proper heat sink. This is done to minimize temperature variation
across the surface.
Measure the thermal resistance from the junction to where the leads are attached to the case. This definition
is approximately equal to a junction to board thermal resistance.
Use the value obtained by the equation (TJ – TT)/PD where TT is the temperature of the package case
determined by a thermocouple.
56852 Technical Data, Rev. 8
Freescale Semiconductor
43
As noted above, the junction-to-case thermal resistances quoted in this data sheet are determined using the
first definition. From a practical standpoint, that value is also suitable for determining the junction
temperature from a case thermocouple reading in forced convection environments. In natural convection,
using the junction-to-case thermal resistance to estimate junction temperature from a thermocouple
reading on the case of the package will estimate a junction temperature slightly hotter than actual. Hence,
the new thermal metric, Thermal Characterization Parameter, or ΨJT, has been defined to be (TJ – TT)/PD.
This value gives a better estimate of the junction temperature in natural convection when using the surface
temperature of the package. Remember that surface temperature readings of packages are subject to
significant errors caused by inadequate attachment of the sensor to the surface and to errors caused by heat
loss to the sensor. The recommended technique is to attach a 40-gauge thermocouple wire and bead to the
top center of the package with thermally conductive epoxy.
6.2 Electrical Design Considerations
CAUTION
This device contains protective circuitry to guard against
damage due to high static voltage or electrical fields.
However, normal precautions are advised to avoid
application of any voltages higher than maximum rated
voltages to this high-impedance circuit. Reliability of
operation is enhanced if unused inputs are tied to an
appropriate voltage level.
Use the following list of considerations to assure correct operation:
•
Provide a low-impedance path from the board power supply to each VDD pin on the device, and from the
board ground to each VSS (GND) pin.
•
The minimum bypass requirement is to place six 0.01–0.1μF capacitors positioned as close as possible to
the package supply pins. The recommended bypass configuration is to place one bypass capacitor on each
of the ten VDD/VSS pairs, including VDDA/VSSA.
•
Ensure that capacitor leads and associated printed circuit traces that connect to the chip VDD and VSS (GND)
pins are less than 0.5 inch per capacitor lead.
Use at least a four-layer Printed Circuit Board (PCB) with two inner layers for VDD and GND.
•
•
•
•
Bypass the VDD and GND layers of the PCB with approximately 100μF, preferably with a high-grade
capacitor such as a tantalum capacitor.
Because the device’s output signals have fast rise and fall times, PCB trace lengths should be minimal.
Consider all device loads as well as parasitic capacitance due to PCB traces when calculating capacitance.
This is especially critical in systems with higher capacitive loads that could create higher transient currents
in the VDD and GND circuits.
•
All inputs must be terminated (i.e., not allowed to float) using CMOS levels.
56852 Technical Data, Rev. 8
44
Freescale Semiconductor
Electrical Design Considerations
•
Take special care to minimize noise levels on the VDDA and VSSA pins.
•
•
When using Wired-OR mode on the SPI or the IRQx pins, the user must provide an external pull-up device.
Designs that utilize the TRST pin for JTAG port or Enhance OnCE module functionality (such as
development or debugging systems) should allow a means to assert TRST whenever RESET is asserted, as
well as a means to assert TRST independently of RESET. Designs that do not require debugging
functionality, such as consumer products, should tie these pins together.
The internal POR (Power on Reset) will reset the part at power on with reset asserted or pulled high but
requires that TRST be asserted at power on.
•
56852 Technical Data, Rev. 8
Freescale Semiconductor
45
Part 7 Ordering Information
Table 7-1 lists the pertinent information needed to place an order. Consult a Freescale Semiconductor
sales office or authorized distributor to determine availability and to order parts.
Table 7-1 56852 Ordering Information
Part
Supply
Voltage
Package Type
Pin
Count
Frequency
(MHz)
Order Number
DSP56852
1.8–3.3 V
Mold Array Process Ball Grid Array (MAPBGA)
81
120
DSP56852VF120
DSP56852
1.8–3.3 V
Mold Array Process Ball Grid Array (MAPBGA)
81
120
DSP56852VFE *
*This package is RoHS compliant.
56852 Technical Data, Rev. 8
46
Freescale Semiconductor
Electrical Design Considerations
56852 Technical Data, Rev. 8
Freescale Semiconductor
47
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Freescale Semiconductor products are not designed, intended, or authorized
for use as components in systems intended for surgical implant into the body,
or other applications intended to support or sustain life, or for any other
application in which the failure of the Freescale Semiconductor product could
create a situation where personal injury or death may occur. Should Buyer
purchase or use Freescale Semiconductor products for any such unintended
or unauthorized application, Buyer shall indemnify and hold Freescale
Semiconductor and its officers, employees, subsidiaries, affiliates, and
distributors harmless against all claims, costs, damages, and expenses, and
reasonable attorney fees arising out of, directly or indirectly, any claim of
personal injury or death associated with such unintended or unauthorized
use, even if such claim alleges that Freescale Semiconductor was negligent
regarding the design or manufacture of the part.
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor,
Inc. All other product or service names are the property of their respective owners.
This product incorporates SuperFlash® technology licensed from SST.
© Freescale Semiconductor, Inc. 2005. All rights reserved.
DSP56852
Rev. 8
01/2007