ZHCSA18F March   2009  – February 2021 TMS320C28341 , TMS320C28342 , TMS320C28343 , TMS320C28343-Q1 , TMS320C28344 , TMS320C28345 , TMS320C28346 , TMS320C28346-Q1

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1. 3.1 Functional Block Diagram
  4. 4 Revision History
  5. 5 Device Comparison
    1. 5.1 Related Products
  6. 6 Terminal Configuration and Functions
    1. 6.1 Pin Diagrams
    2. 6.2 Signal Descriptions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings (1) (1)
    2. 7.2 ESD Ratings – Automotive
    3. 7.3 ESD Ratings – Commercial
    4. 7.4 Recommended Operating Conditions
    5. 7.5 Power Consumption Summary
      1. 7.5.1 TMS320C28346/C28344 (1) Current Consumption by Power-Supply Pins at 300-MHz SYSCLKOUT
      2. 7.5.2 TMS320C28345/C28343 (1) Current Consumption by Power-Supply Pins at 200-MHz SYSCLKOUT
      3. 7.5.3 Reducing Current Consumption
    6. 7.6 Electrical Characteristics
    7. 7.7 Thermal Resistance Characteristics
      1. 7.7.1 ZHH Package
      2. 7.7.2 ZFE Package
    8. 7.8 Thermal Design Considerations
    9. 7.9 Timing and Switching Characteristics
      1. 7.9.1 Timing Parameter Symbology
        1. 7.9.1.1 General Notes on Timing Parameters
        2. 7.9.1.2 Test Load Circuit
        3. 7.9.1.3 Device Clock Table
          1. 7.9.1.3.1 Clocking and Nomenclature (300-MHz Devices)
          2. 7.9.1.3.2 Clocking and Nomenclature (200-MHz Devices)
      2. 7.9.2 Power Sequencing
        1. 7.9.2.1 Power Management and Supervisory Circuit Solutions
        2. 7.9.2.2 Reset ( XRS) Timing Requirements
      3. 7.9.3 Clock Requirements and Characteristics
        1. 7.9.3.1 XCLKIN/X1 Timing Requirements – PLL Enabled
        2. 7.9.3.2 XCLKIN/X1 Timing Requirements – PLL Disabled
        3. 7.9.3.3 XCLKOUT Switching Characteristics (PLL Bypassed or Enabled) (1) (1)
        4. 7.9.3.4 Timing Diagram
      4. 7.9.4 Peripherals
        1. 7.9.4.1 General-Purpose Input/Output (GPIO)
          1. 7.9.4.1.1 GPIO - Output Timing
            1. 7.9.4.1.1.1 General-Purpose Output Switching Characteristics
          2. 7.9.4.1.2 GPIO - Input Timing
            1. 7.9.4.1.2.1 General-Purpose Input Timing Requirements
          3. 7.9.4.1.3 Sampling Window Width for Input Signals
          4. 7.9.4.1.4 Low-Power Mode Wakeup Timing
            1. 7.9.4.1.4.1 IDLE Mode Timing Requirements (1)
            2. 7.9.4.1.4.2 IDLE Mode Switching Characteristics (1)
            3. 7.9.4.1.4.3 IDLE Mode Timing Diagram
            4. 7.9.4.1.4.4 STANDBY Mode Timing Requirements
            5. 7.9.4.1.4.5 STANDBY Mode Switching Characteristics
            6. 7.9.4.1.4.6 STANDBY Mode Timing Diagram
            7. 7.9.4.1.4.7 HALT Mode Timing Requirements
            8. 7.9.4.1.4.8 HALT Mode Switching Characteristics
            9. 7.9.4.1.4.9 HALT Mode Timing Diagram
        2. 7.9.4.2 Enhanced Control Peripherals
          1. 7.9.4.2.1 Enhanced Pulse Width Modulator (ePWM) Timing
            1. 7.9.4.2.1.1 ePWM Timing Requirements (1)
            2. 7.9.4.2.1.2 ePWM Switching Characteristics
          2. 7.9.4.2.2 Trip-Zone Input Timing
            1. 7.9.4.2.2.1 Trip-Zone Input Timing Requirements (1)
          3. 7.9.4.2.3 High-Resolution PWM Timing
            1. 7.9.4.2.3.1 High-Resolution PWM Characteristics at SYSCLKOUT = (150–300 MHz)
          4. 7.9.4.2.4 Enhanced Capture (eCAP) Timing
            1. 7.9.4.2.4.1 Enhanced Capture (eCAP) Timing Requirements (1)
            2. 7.9.4.2.4.2 eCAP Switching Characteristics
          5. 7.9.4.2.5 Enhanced Quadrature Encoder Pulse (eQEP) Timing
            1. 7.9.4.2.5.1 Enhanced Quadrature Encoder Pulse (eQEP) Timing Requirements (1)
            2. 7.9.4.2.5.2 eQEP Switching Characteristics
          6. 7.9.4.2.6 ADC Start-of-Conversion Timing
            1. 7.9.4.2.6.1 External ADC Start-of-Conversion Switching Characteristics
            2. 7.9.4.2.6.2 ADCSOCAO or ADCSOCBO Timing
        3. 7.9.4.3 External Interrupt Timing
          1. 7.9.4.3.1 External Interrupt Timing Requirements (1)
          2. 7.9.4.3.2 External Interrupt Switching Characteristics (1)
          3. 7.9.4.3.3 External Interrupt Timing Diagram
        4. 7.9.4.4 I2C Electrical Specification and Timing
          1. 7.9.4.4.1 I2C Timing
        5. 7.9.4.5 Serial Peripheral Interface (SPI) Timing
          1. 7.9.4.5.1 Master Mode Timing
            1. 7.9.4.5.1.1 SPI Master Mode External Timing (Clock Phase = 0) (1) (1) (1) (1) (1)
            2. 7.9.4.5.1.2 SPI Master Mode External Timing (Clock Phase = 1) (1) (1) (1) (1) (1)
          2. 7.9.4.5.2 Slave Mode Timing
            1. 7.9.4.5.2.1 SPI Slave Mode External Timing (Clock Phase = 0) (1) (1) (1) (1) (1)
            2. 7.9.4.5.2.2 SPI Slave Mode External Timing (Clock Phase = 1) (1) (1) (1) (1)
        6. 7.9.4.6 Multichannel Buffered Serial Port (McBSP) Timing
          1. 7.9.4.6.1 McBSP Transmit and Receive Timing
            1. 7.9.4.6.1.1 McBSP Timing Requirements (1) (1)
            2. 7.9.4.6.1.2 McBSP Switching Characteristics (1) (1)
          2. 7.9.4.6.2 McBSP as SPI Master or Slave Timing
            1. 7.9.4.6.2.1 McBSP as SPI Master or Slave Timing Requirements (CLKSTP = 10b, CLKXP = 0) (1)
            2. 7.9.4.6.2.2 McBSP as SPI Master or Slave Switching Characteristics (CLKSTP = 10b, CLKXP = 0)
            3. 7.9.4.6.2.3 McBSP as SPI Master or Slave Timing Requirements (CLKSTP = 11b, CLKXP = 0) (1)
            4. 7.9.4.6.2.4 McBSP as SPI Master or Slave Switching Characteristics (CLKSTP = 11b, CLKXP = 0)
            5. 7.9.4.6.2.5 McBSP as SPI Master or Slave Timing Requirements (CLKSTP = 10b, CLKXP = 1) (1)
            6. 7.9.4.6.2.6 McBSP as SPI Master or Slave Switching Characteristics (CLKSTP = 10b, CLKXP = 1)
            7. 7.9.4.6.2.7 McBSP as SPI Master or Slave Timing Requirements (CLKSTP = 11b, CLKXP = 1) (1)
            8. 7.9.4.6.2.8 McBSP as SPI Master or Slave Switching Characteristics (CLKSTP = 11b, CLKXP = 1) (1)
      5. 7.9.5 Emulator Connection Without Signal Buffering for the MCU
      6. 7.9.6 External Interface (XINTF) Timing
        1. 7.9.6.1 USEREADY = 0
        2. 7.9.6.2 Synchronous Mode (USEREADY = 1, READYMODE = 0)
        3. 7.9.6.3 Asynchronous Mode (USEREADY = 1, READYMODE = 1)
        4. 7.9.6.4 XINTF Signal Alignment to XCLKOUT
        5. 7.9.6.5 External Interface Read Timing
          1. 7.9.6.5.1 External Interface Read Timing Requirements
          2. 7.9.6.5.2 External Interface Read Switching Characteristics
        6. 7.9.6.6 External Interface Write Timing
          1. 7.9.6.6.1 External Interface Write Switching Characteristics
        7. 7.9.6.7 External Interface Ready-on-Read Timing With One External Wait State
          1. 7.9.6.7.1 External Interface Read Switching Characteristics (Ready-on-Read, One Wait State)
          2. 7.9.6.7.2 External Interface Read Timing Requirements (Ready-on-Read, One Wait State)
          3. 7.9.6.7.3 Synchronous XREADY Timing Requirements (Ready-on-Read, One Wait State) (1)
          4. 7.9.6.7.4 Asynchronous XREADY Timing Requirements (Ready-on-Read, One Wait State)
        8. 7.9.6.8 External Interface Ready-on-Write Timing With One External Wait State
          1. 7.9.6.8.1 External Interface Write Switching Characteristics (Ready-on-Write, One Wait State)
          2. 7.9.6.8.2 Synchronous XREADY Timing Requirements (Ready-on-Write, One Wait State) Table 1-1
          3. 7.9.6.8.3 Asynchronous XREADY Timing Requirements (Ready-on-Write, One Wait State) (1)
        9. 7.9.6.9 XHOLD and XHOLDA Timing
          1. 7.9.6.9.1 XHOLD/ XHOLDA Timing Requirements (1) (1) (1)
  8. 8 Detailed Description
    1. 8.1 Brief Descriptions
      1. 8.1.1  C28x CPU
      2. 8.1.2  Memory Bus (Harvard Bus Architecture)
      3. 8.1.3  Peripheral Bus
      4. 8.1.4  Real-Time JTAG and Analysis
      5. 8.1.5  External Interface (XINTF)
      6. 8.1.6  M0, M1 SARAMs
      7. 8.1.7  L0, L1, L2, L3, L4, L5, L6, L7, H0, H1, H2, H3, H4, H5 SARAMs
      8. 8.1.8  Boot ROM
      9. 8.1.9  Security
      10. 8.1.10 Peripheral Interrupt Expansion (PIE) Block
      11. 8.1.11 External Interrupts (XINT1–XINT7, XNMI)
      12. 8.1.12 Oscillator and PLL
      13. 8.1.13 Watchdog
      14. 8.1.14 Peripheral Clocking
      15. 8.1.15 Low-Power Modes
      16. 8.1.16 Peripheral Frames 0, 1, 2, 3 (PFn)
      17. 8.1.17 General-Purpose Input/Output (GPIO) Multiplexer
      18. 8.1.18 32-Bit CPU-Timers (0, 1, 2)
      19. 8.1.19 Control Peripherals
      20. 8.1.20 Serial Port Peripherals
    2. 8.2 Peripherals
      1. 8.2.1  DMA Overview
      2. 8.2.2  32-Bit CPU-Timer 0, CPU-Timer 1, CPU-Timer 2
      3. 8.2.3  Enhanced PWM Modules
      4. 8.2.4  High-Resolution PWM (HRPWM)
      5. 8.2.5  Enhanced CAP Modules
      6. 8.2.6  Enhanced QEP Modules
      7. 8.2.7  External ADC Interface
      8. 8.2.8  Multichannel Buffered Serial Port (McBSP) Module
      9. 8.2.9  Enhanced Controller Area Network (eCAN) Modules (eCAN-A and eCAN-B)
      10. 8.2.10 Serial Communications Interface (SCI) Modules (SCI-A, SCI-B, SCI-C)
      11. 8.2.11 Serial Peripheral Interface (SPI) Module (SPI-A, SPI-D)
      12. 8.2.12 Inter-Integrated Circuit (I2C)
      13. 8.2.13 GPIO MUX
      14. 8.2.14 External Interface (XINTF)
    3. 8.3 Memory Maps
    4. 8.4 Register Map
      1. 8.4.1 Device Emulation Registers
    5. 8.5 Interrupts
      1. 8.5.1 External Interrupts
    6. 8.6 System Control
      1. 8.6.1 OSC and PLL Block
        1. 8.6.1.1 External Reference Oscillator Clock Option
        2. 8.6.1.2 PLL-Based Clock Module
        3. 8.6.1.3 Loss of Input Clock
      2. 8.6.2 Watchdog Block
    7. 8.7 Low-Power Modes Block
  9. 9 Applications, Implementation, and Layout
    1. 9.1 TI Design or Reference Design
  10. 10Device and Documentation Support
    1. 10.1 Getting Started
    2. 10.2 Device and Development Support Tool Nomenclature
    3. 10.3 Tools and Software
    4. 10.4 Documentation Support
    5. 10.5 支持资源
    6. 10.6 Trademarks
    7. 10.7 静电放电警告
    8. 10.8 术语表
  11. 11Mechanical, Packaging, and Orderable Information
    1. 11.1 Packaging Information

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8.3 Memory Maps

In Figure 8-21 to Figure 8-23, the following apply:

  • Memory blocks are not to scale.
  • Peripheral Frame 0, Peripheral Frame 1, Peripheral Frame 2, and Peripheral Frame 3 memory maps are restricted to data memory only. A user program cannot access these memory maps in program space.
  • Protected means the order of "Write followed by Read" operations is preserved rather than the pipeline order. See the TMS320x2834x Delfino System Control and Interrupts Reference Guide for more details.
  • Certain memory ranges are EALLOW protected against spurious writes after configuration.
  • If the eCAN module is not used in an application, the RAM available (LAM, MOTS, MOTO, and mailbox RAM) can be used as general-purpose RAM. The CAN module clock should be enabled for this.

GUID-663267D8-30F0-474B-B1AE-DD77355EC549-low.gif
These locations support compatibility with legacy C28x designs only. See Section 8.1.9.
Figure 8-21 C28346, C28345 Memory Map
GUID-716038DC-1A99-42FF-8160-B2AB2979E4BC-low.gif
These locations support compatibility with legacy C28x designs only. See Section 8.1.9.
Figure 8-22 C28344, C28343 Memory Map
GUID-299AE99B-9ED2-4558-BAA5-83BD41463E3A-low.gif
These locations support compatibility with legacy C28x designs only. See Section 8.1.9.
Figure 8-23 C28342, C28341 Memory Map

Peripheral Frame 1, Peripheral Frame 2, and Peripheral Frame 3 are grouped together to enable these blocks to be write/read peripheral block protected. The protected mode ensures that all accesses to these blocks happen as written. Because of the C28x pipeline, a write immediately followed by a read, to different memory locations, will appear in reverse order on the memory bus of the CPU. This can cause problems in certain peripheral applications where the user expected the write to occur first (as written). The C28x CPU supports a block protection mode where a region of memory can be protected so as to make sure that operations occur as written (the penalty is extra cycles are added to align the operations). This mode is programmable and by default, it will protect the selected zones.

The wait states for the various spaces in the memory map area are listed in Table 8-22.

Table 8-22 Wait States
AREAWAIT STATES
(CPU)		WAIT STATES
(DMA)(1)		COMMENTS
M0 and M1 SARAMs0-waitNo accessFixed
Peripheral Frame 00-wait (writes)No access (writes)
1-wait (reads)0-wait (reads)
Peripheral Frame 30-wait (writes)0-wait (writes)Assumes no conflicts between CPU and DMA.
2-wait (reads)1-wait (reads)
Peripheral Frame 10-wait (writes)No accessCycles can be extended by peripheral generated ready.
2-wait (reads)Consecutive writes to the CAN will experience a 1-cycle pipeline hit.
Peripheral Frame 20-wait (writes)No accessFixed. Cycles cannot be extended by the peripheral.
2-wait (reads)
L0 SARAM0-wait data and programAssumes no CPU conflicts
L1 SARAM
L2 SARAM
L3 SARAM
L4 SARAM1-waitAssumes no conflicts between CPU and DMA
L5 SARAM
L6 SARAM1-wait
L7 SARAM
XINTFProgrammableProgrammed through the XTIMING registers or extendable through external XREADY signal.
1-wait minimum1-wait is minimum wait states allowed on external waveforms for both reads and writes on XINTF.
0-wait minimum writes with write buffer enabled0-wait data (write)
0-wait data (read)		0-wait minimum for writes assumes write buffer enabled and not full.
Assumes no conflicts between CPU and DMA. When DMA and CPU try simultaneous conflict, 1-cycle delay is added for arbitration.
H0 SARAM1-waitNo accessA program-access prefetch mechanism is enabled on these memories to improve instruction fetch performance for linear code execution.
H1 SARAM
H2 SARAM
H3 SARAM
H4 SARAM
H5 SARAM
Boot-ROM1-waitNo access
(1) The DMA has a base of four cycles/word.