SLAS887A September   2014  – May 2018

PRODUCTION DATA.  

  1. 1Device Overview
    1. 1.1 Features
    2. 1.2 Applications
    3. 1.3 Description
    4. 1.4 Functional Block Diagram
  2. 2Revision History
  3. 3Device Comparison
    1. 3.1 Related Products
  4. 4Terminal Configuration and Functions
    1. 4.1 Pin Diagrams
    2. 4.2 Signal Descriptions
      1. Table 4-1 Signal Descriptions
    3. 4.3 Pin Multiplexing
    4. 4.4 Connection of Unused Pins
  5. 5Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Active Mode Supply Current (Into VCC) Excluding External Current
    5. 5.5 Low-Power Mode Supply Currents (Into VCC) Excluding External Current
    6. 5.6 Thermal Resistance Characteristics
    7. 5.7 Timing and Switching Characteristics
      1. 5.7.1  Reset Timing
        1. Table 5-1 Reset Timing
      2. 5.7.2  Clock Specifications
        1. Table 5-2 DCO in External Resistor Mode
        2. Table 5-3 DCO in Internal Resistor Mode
        3. Table 5-4 DCO Overall Tolerance Table
        4. Table 5-5 DCO in Bypass Mode Recommended Operating Conditions
      3. 5.7.3  Wake-up Characteristics
        1. Table 5-6 Wake-up Times From Low Power Modes
      4. 5.7.4  I/O Ports
        1. Table 5-7   Schmitt-Trigger Inputs – General-Purpose I/O
        2. Table 5-8   Inputs – Ports P1 and P2
        3. Table 5-9   Leakage Current – General-Purpose I/O
        4. Table 5-10 Outputs – General-Purpose I/O
        5. Table 5-11 Output Frequency – General-Purpose I/O
        6. 5.7.4.1     Typical Characteristics – Outputs
      5. 5.7.5  Power Management Module
        1. Table 5-12 PMM, High-Side Brownout Reset (BORH)
        2. Table 5-13 PMM, Low-Side SVS (SVSL)
        3. Table 5-14 PMM, Core Voltage
        4. Table 5-15 PMM, Voltage Monitor (VMON)
      6. 5.7.6  Reference Module
        1. Table 5-16 Voltage Reference (REF)
        2. Table 5-17 Temperature Sensor
      7. 5.7.7  SD24
        1. Table 5-18 SD24 Power Supply and Recommended Operating Conditions
        2. Table 5-19 SD24 Internal Voltage Reference
        3. Table 5-20 SD24 External Voltage Reference
        4. Table 5-21 SD24 Input Range
        5. Table 5-22 SD24 Performance, Internal Reference (SD24REFS = 1, SD24OSRx = 256)
        6. Table 5-23 SD24 Performance, External Reference (SD24REFS = 0, SD24OSRx = 256)
      8. 5.7.8  eUSCI
        1. Table 5-24 eUSCI (UART Mode) Recommended Operating Conditions
        2. Table 5-25 eUSCI (UART Mode)
        3. Table 5-26 eUSCI (SPI Master Mode) Recommended Operating Conditions
        4. Table 5-27 eUSCI (SPI Master Mode)
        5. Table 5-28 eUSCI (SPI Slave Mode)
        6. Table 5-29 eUSCI (I2C Mode)
      9. 5.7.9  Timer_A
        1. Table 5-30 Timer_A
      10. 5.7.10 Flash
        1. Table 5-31 Flash Memory
      11. 5.7.11 Emulation and Debug
        1. Table 5-32 JTAG and Spy-Bi-Wire Interface
  6. 6Detailed Description
    1. 6.1  Overview
    2. 6.2  Functional Block Diagrams
    3. 6.3  CPU
    4. 6.4  Instruction Set
    5. 6.5  Operating Modes
    6. 6.6  Interrupt Vector Addresses
    7. 6.7  Special Function Registers
      1. Table 6-4 Interrupt Enable 1 (Address = 00h)
      2. Table 6-5 Interrupt Flag Register 1 (Address = 02h)
    8. 6.8  Flash Memory
    9. 6.9  JTAG Operation
      1. 6.9.1 JTAG Standard Interface
      2. 6.9.2 Spy-Bi-Wire Interface
      3. 6.9.3 JTAG Disable Register
        1. Table 6-1 SYSJTAGDIS Register
    10. 6.10 Peripherals
      1. 6.10.1 Clock System
      2. 6.10.2 Power-Management Module (PMM)
      3. 6.10.3 Digital I/O
      4. 6.10.4 Watchdog Timer (WDT)
      5. 6.10.5 Timer TA0
      6. 6.10.6 Timer TA1
      7. 6.10.7 Enhanced Universal Serial Communication Interface (eUSCI)
      8. 6.10.8 Hardware Multiplier
      9. 6.10.9 SD24
    11. 6.11 Input/Output Diagrams
      1. 6.11.1 Port P1, P1.0 to P1.3, Input/Output With Schmitt Trigger
      2. 6.11.2 Port P1, P1.4 to P1.7, Input/Output With Schmitt Trigger
      3. 6.11.3 Port P2, P2.0 to P2.2 and P2.4 to P2.7, Input/Output With Schmitt Trigger
      4. 6.11.4 Port P2, P2.3, Input/Output With Schmitt Trigger
    12. 6.12 Device Descriptor
    13. 6.13 Memory
      1. 6.13.1 Peripheral File Map
    14. 6.14 Identification
      1. 6.14.1 Device Identification
      2. 6.14.2 JTAG Identification
  7. 7Applications, Implementation, and Layout
  8. 8Device and Documentation Support
    1. 8.1 Getting Started and Next Steps
    2. 8.2 Device Nomenclature
    3. 8.3 Tools and Software
    4. 8.4 Documentation Support
    5. 8.5 Related Links
    6. 8.6 Community Resources
    7. 8.7 Trademarks
    8. 8.8 Electrostatic Discharge Caution
    9. 8.9 Glossary
  9. 9Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

Clock System

The clock system consists of a fixed 16.384-MHz frequency internal DCO. The DCO can operate in internal resistor mode or external resistor mode. The DCO clock accuracy is higher when operating in external resistor mode especially upon variation in operating temperature. This feature can be useful in applications like utility metering in which accurate clock is necessary under varying operating temperature. When external resistor mode is selected by application, the resistor of recommended value must be connected to ROSC pin of the device. Refer to Table 5-2 for the recommended value of resistor at ROSC pin. TI recommends connecting the ROSC pin to AVSS while operating DCO in internal resistor mode. When a resistor fault is detected in the external resistor mode, the DCO automatically switches to the internal resistor mode as a fail-safe mechanism to keep the system clocks active.

The DCO can be completely bypassed and the system clocks can be sourced by external digital clock. The clock system generates MCLK, SMCLK, and ACLK. MCLK is used by the CPU, while SMCLK and ACLK are used by the peripheral modules. There are programmable clock dividers for MCLK and SMCLK. ACLK runs at a fixed 32-kHz frequency. The clock system supports active mode and four low-power modes.