SLLSEZ5D January   2018  – June 2022 TCAN4550-Q1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specification
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  ESD Ratings, IEC ESD and ISO Transient Specification
    4. 6.4  Recommended Operating Conditions
    5. 6.5  Thermal Information
    6. 6.6  Supply Characteristics
    7. 6.7  Electrical Characteristics
    8. 6.8  Timing Requirements
    9. 6.9  Switching Characteristics
    10. 6.10 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  VSUP Pin
      2. 8.3.2  VIO Pin
      3. 8.3.3  VCCOUT Pin
      4. 8.3.4  GND
      5. 8.3.5  INH Pin
      6. 8.3.6  WAKE Pin
      7. 8.3.7  FLTR Pin
      8. 8.3.8  RST Pin
      9. 8.3.9  OSC1 and OSC2 Pins
      10. 8.3.10 nWKRQ Pin
      11. 8.3.11 nINT Interrupt Pin
      12. 8.3.12 GPIO1 Pin
      13. 8.3.13 GPO2 Pin
      14. 8.3.14 CANH and CANL Bus Pins
    4. 8.4 Device Functional Modes
      1. 8.4.1 Normal Mode
      2. 8.4.2 Standby Mode
      3. 8.4.3 Sleep Mode
        1. 8.4.3.1 Bus Wake via RXD_INT Request (BWRR) in Sleep Mode
        2. 8.4.3.2 Local Wake-Up (LWU) via WAKE Input Terminal
      4. 8.4.4 Test Mode
      5. 8.4.5 Failsafe Feature
      6. 8.4.6 Protection Features
        1. 8.4.6.1 Watchdog Function
        2. 8.4.6.2 Driver and Receiver Function
        3. 8.4.6.3 Floating Terminals
        4. 8.4.6.4 TXD_INT Dominant Timeout (DTO)
        5. 8.4.6.5 CAN Bus Short Circuit Current Limiting
        6. 8.4.6.6 Thermal Shutdown
        7. 8.4.6.7 Under-Voltage Lockout (UVLO) and Unpowered Device
          1. 8.4.6.7.1 UVSUP and UVCCOUT
          2. 8.4.6.7.2 UVIO
          3. 8.4.6.7.3 Fault and M_CAN Core Behavior:
      7. 8.4.7 CAN FD
    5. 8.5 Programming
      1. 8.5.1 SPI Communication
        1. 8.5.1.1 Chip Select Not (nCS):
        2. 8.5.1.2 SPI Clock Input (SCLK):
        3. 8.5.1.3 SPI Data Input (SDI):
        4. 8.5.1.4 SPI Data Output (SDO):
      2. 8.5.2 Register Descriptions
    6. 8.6 Register Maps
      1. 8.6.1 Device ID and Interrupt/Diagnostic Flag Registers: 16'h0000 to 16'h002F
        1. 8.6.1.1 DEVICE_ID1[31:0] (address = h0000) [reset = h4E414354]
        2. 8.6.1.2 DEVICE_ID2[31:0] (address = h0004) [reset = h30353534]
        3. 8.6.1.3 Revision (address = h0008) [reset = h00110201]
        4. 8.6.1.4 Status (address = h000C) [reset = h0000000U]
        5. 8.6.1.5 SPI Error status mask (address = h0010) [reset = h00000000]
      2. 8.6.2 Device Configuration Registers: 16'h0800 to 16'h08FF
        1. 8.6.2.1 Modes of Operation and Pin Configuration Registers (address = h0800) [reset = hC8000468]
        2. 8.6.2.2 Timestamp Prescaler (address = h0804) [reset = h00000002]
        3. 8.6.2.3 Test Register and Scratch Pad (address = h0808) [reset = h00000000]
        4. 8.6.2.4 Test Register (address = h080C) [reset = h00000000]
      3. 8.6.3 Interrupt/Diagnostic Flag and Enable Flag Registers: 16'h0820/0824 and 16'h0830
        1. 8.6.3.1 Interrupts (address = h0820) [reset = h00100000]
        2. 8.6.3.2 MCAN Interrupts (address = h0824) [reset = h00000000]
        3. 8.6.3.3 Interrupt Enables (address = h0830 ) [reset = hFFFFFFFF]
      4. 8.6.4 CAN FD Register Set: 16'h1000 to 16'h10FF
        1. 8.6.4.1  Core Release Register (address = h1000) [reset = hrrrddddd]
        2. 8.6.4.2  Endian Register (address = h1004) [reset = h87654321]
        3. 8.6.4.3  Customer Register (address = h1008) [reset = h00000000]
        4. 8.6.4.4  Data Bit Timing & Prescaler (address = h100C) [reset = h0000A33]
        5. 8.6.4.5  Test Register (address = h1010 ) [reset = h00000000]
        6. 8.6.4.6  RAM Watchdog (address = h1014) [reset = h00000000]
        7. 8.6.4.7  Control Register (address = h1018) [reset = 0000 0019]
        8. 8.6.4.8  Nominal Bit Timing & Prescaler Register (address = h101C) [reset = h06000A03]
        9. 8.6.4.9  Timestamp Counter Configuration (address = h1020) [reset = h00000000]
        10. 8.6.4.10 Timestamp Counter Value (address = h1024) [reset = h00000000]
        11. 8.6.4.11 Timeout Counter Configuration (address = h1028) [reset = hFFFF0000]
        12. 8.6.4.12 Timeout Counter Value (address = h102C) [reset = h0000FFFF]
        13. 8.6.4.13 Reserved (address = h1030 - h103C) [reset = h00000000]
        14. 8.6.4.14 Error Counter Register (address = h1040) [reset = h00000000]
        15. 8.6.4.15 Protocol Status Register (address = h1044) [reset = h00000707]
        16. 8.6.4.16 Transmitter Delay Compensation Register (address = h1048) [reset = h00000000]
        17. 8.6.4.17 Reserved (address = h104C) [reset = h00000000]
        18. 8.6.4.18 Interrupt Register (address = h1050) [reset = h00000000]
        19. 8.6.4.19 Interrupt Enable (address = h1054) [reset = h00000000]
        20. 8.6.4.20 Interrupt Line Select (address = h1058) [reset = h00000000]
        21. 8.6.4.21 Interrupt Line Enable (address = h105C) [reset = h00000000]
        22. 8.6.4.22 Reserved (address = h1060 - h107C) [reset = h00000000]
        23. 8.6.4.23 Global Filter Configuration (address = h1080) [reset = h00000000]
        24. 8.6.4.24 Standard ID Filter Configuration (address = h1084) [reset = h00000000]
        25. 8.6.4.25 Extended ID Filter Configuration (address = h1088) [reset = h00000000]
        26. 8.6.4.26 Reserved (address = h108C) [reset = h00000000]
        27. 8.6.4.27 Extended ID AND Mask (address = h1090) [reset = h1FFFFFFF]
        28. 8.6.4.28 High Priority Message Status (address = h1094) [reset = h00000000]
        29. 8.6.4.29 New Data 1 (address = h1098) [reset = h00000000]
        30. 8.6.4.30 New Data 2 (address = h109C) [reset = h00000000]
        31. 8.6.4.31 Rx FIFO 0 Configuration (address = h10A0) [reset = h00000000]
        32. 8.6.4.32 Rx FIFO 0 Status (address = h10A4) [reset = h00000000]
        33. 8.6.4.33 Rx FIFO 0 Acknowledge (address = h10A8) [reset = h00000000]
        34. 8.6.4.34 Rx Buffer Configuration (address = h10AC) [reset = h00000000]
        35. 8.6.4.35 Rx FIFO 1 Configuration (address = h10B0) [reset = h00000000]
        36. 8.6.4.36 Rx FIFO 1 Status (address = h10B4) [reset = h00000000]
        37. 8.6.4.37 Rx FIFO 1 Acknowledge (address = h10B8) [reset = h00000000]
        38. 8.6.4.38 Rx Buffer/FIFO Element Size Configuration (address = h10BC) [reset = h00000000]
        39. 8.6.4.39 Tx Buffer Configuration (address = h10C0) [reset = h00000000]
        40. 8.6.4.40 Tx FIFO/Queue Status (address = h10C4) [reset = h00000000]
        41. 8.6.4.41 Tx Buffer Element Size Configuration (address = h10C8) [reset = h00000000]
        42. 8.6.4.42 Tx Buffer Request Pending (address = h10CC) [reset = h00000000]
        43. 8.6.4.43 Tx Buffer Add Request (address = h10D0) [reset = h00000000]
          1. 8.6.4.43.1  Tx Buffer Cancellation Request (address = h10D4 [reset = h00000000]
          2. 8.6.4.43.2  Tx Buffer Add Request Transmission Occurred (address = h10D8) [reset = h00000000]
          3. 8.6.4.43.3  Tx Buffer Cancellation Finished (address = h10DC) [reset = h00000000]
          4. 8.6.4.43.4  Tx Buffer Transmission Interrupt Enable (address = h10E0) [reset = h00000000]
          5. 8.6.4.43.5  Tx Buffer Cancellation Finished Interrupt Enable (address = h10E4) [reset = h00000000]
          6. 8.6.4.43.6  Reserved (address = h10E8) [reset = h00000000]
          7. 8.6.4.43.7  Reserved (address = h10EC) [reset = h00000000]
          8. 8.6.4.43.8  Tx Event FIFO Configuration (address = h10F0) [reset = h00000000]
          9. 8.6.4.43.9  Tx Event FIFO Status (address = h10F4) [reset = h00000000]
          10. 8.6.4.43.10 Tx Event FIFO Acknowledge (address = h10F8) [reset = h00000000]
          11. 8.6.4.43.11 Reserved (address = h10FC) [reset = h00000000]
  9. 9 Application and Implementation
    1. 9.1 Application Design Consideration
      1. 9.1.1 Crystal and Clock Input Requirements
      2. 9.1.2 Bus Loading, Length and Number of Nodes
      3. 9.1.3 CAN Termination
        1.       Termination
        2. 9.1.3.1 CAN Bus Biasing
      4. 9.1.4 INH Brownout Behavior
    2. 9.2 Typical Application
      1. 9.2.1 Detailed Requirements
      2. 9.2.2 Detailed Design Procedures
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
        1. 12.1.1.1 CAN Transceiver Physical Layer Standards:
        2. 12.1.1.2 EMC requirements:
        3. 12.1.1.3 Conformance Test requirements:
        4. 12.1.1.4 Support Documents
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

8.6.2.1 Modes of Operation and Pin Configuration Registers (address = h0800) [reset = hC8000468]

Figure 8-24 Modes of Operation and Pin Configuration Registers
31 30 29 28 27 26 25 24
WAKE_CONFIG WD_TIMER CLK_REF RSVD RSVD RSVD
R/W R/W R/W R R R
23 22 21 20 19 18 17 16
GPO2_CONFIG TEST_MODE_EN RSVD nWKRQ_VOLTAGE WD_BIT_SET WD_ACTION
R/W R/W R R/W R/W R/W
15 14 13 12 11 10 9 8
GPIO1_CONFIG FAIL_SAFE_EN RSVD GPIO1_GPO_CONFIG INH_DIS nWKRQ_CONFIG
R/W R/W R R/W R/W R/W
7 6 5 4 3 2 1 0
MODE_SEL RSVD RSVD WD_EN DEVICE_RESET SWE_DIS TEST_MODE_CONFIG
R/W/U R R R/W/U R/W/U R/W R/W
Table 8-16 Modes of Operation and Pin Configuration Registers Field Descriptions
BitFieldTypeResetDescription
31:30WAKE_CONFIGR/W2’b11WAKE_CONFIG: Wake pin configuration
00 = Disabled
01 = Rising edge
10 = Falling edge
11 = Bi-Directional – either edge
29:28WD_TIMERR/W2’b00WD_TIMER: Watchdog timer
00 = 60 ms
01 = 600 ms
10 = 3 s
11 = 6 s
27CLK_REFR/W1'b1CLK_REF: CLKIN/Crystal Frequency Reference
0 = 20 MHz
1 = 40 MHz
26:24RSVDR3'b000Reserved
23:22GPO2_CONFIGR/W2’b00GPO2_CONFIG: GPO2 Pin GPO Configuration
00 = No Action
01 = MCAN_INT 0 interrupt (Active low)
10 = Watchdog output
11 = Mirrors nINT pin (Active low)
See NOTE section
21TEST_MODE_ENR/W1'b0TEST_MODE_EN: Test mode enable. When set device is in test mode
0 = Disabled
1 = Enabled
20RSVDR1'b0Reserved
19nWKRQ_VOLTAGER/W1’b0nWKRQ_VOLTAGE: nWKRQ Pin GPO buffer voltage rail configuration:
0 = Internal voltage rail
1 = VIO voltage rail
18WD_BIT_SETR/W1’b0WD_BIT_SET: Write a 1 to reset timer: if times out, this bit will set and then the selected action from 0800[17:16] will take place. (TCAN4x50 Only otherwise reserved) This is a self-clearing bit. Writing a 1 resets the timer and then the bit clears
17:16WD_ACTIONR/W2’b00WD_ACTION: Selected action when WD_TIMER times out
00 = Set interrupt flag, and if a pin is configure to reflect WD output as an interrupt the pin will show a low.
01 = Pulse INH pin and places the device into standby mode – high to low to high ≈300 ms
10 = Pulse watchdog output pin if enabled – high to low to high ≈300 ms
11 = Reserved
NOTE: Interrupt flag is always set for a WD timeout event.
15:14GPIO1_CONFIGR/W2’b00GPIO1_CONFIG: GPIO1 Pin Function Select
00 = GPO
01 = Reserved
10 = GPI – Automatically becomes a WD input trigger pin.
11 = Reserved
13FAIL_SAFE_ENR/W1'b0FAIL_SAFE_EN: Fail safe mode enable:
0 = Disabled
1 = Enabled
NOTE: Excludes power up fail safe.
12RSVDR1'b0Reserved
11:10GPIO1_GPO_CONFIGR/W2’b01GPIO1_GPO_CONFIG: GPIO1 pin GPO1 function select
00 = SPI fault Interrupt (Active low)
01 = MCAN_INT 1 (Active low)
10 = Under voltage or thermal event interrupt (Active low)
11 = Reserved
9INH_DISR/W1'b0INH_DIS: INH Pin Disable
0 = Pin enabled
1 = Pin disabled
8nWKRQ_CONFIGR/W1'b0nWKRQ_CONFIG: nWKRQ Pin Function
0 = Mirrors INH function
1 = Wake request interrupt
7:6MODE_SELR/W2'b01MODE_SEL: Mode of operation select
00 = Sleep
01 = Standby
10 = Normal
11 = Reserved
See NOTE section
5RSVDR1'b1If this bit is written to it must be a 1
4RSVDR1'b0Reserved
3WD_ENR/X/U1’b1WD_EN: Watchdog Enable
0 = Disabled
1 = Enabled
2DEVICE_RESETR/WC1'b0DEVICE_RESET: Device Reset
0 = Current configuration
1 = Device resets to default
NOTE: Same function as RST pin
1SWE_DISR/W1'b0SWE_DIS: Sleep Wake Error Disable:
0 = Enabled
1 = Disabled
NOTE: This disables the device from starting the four-minute timer when coming out of sleep mode on a wake event. If this is enabled, a SPI read or write must take place within this four minute window or the device will go back to sleep. This does not disable the function for initial power on or in case of a power on reset.
0TEST_MODE_CONFIGR/W1'b0Test Mode Configuration
0 = Phy Test with TXD/RXD_INT_PHY and EN_INT are mapped to external pins
1 = CAN Controller test with TXD/RXD_INT_CAN mapped to external pins
Note:

  • The Mode of Operation changes the mode, but will read back the current mode of the device.
  • When the device is changing, the device to normal mode a write of 0 to CCCR.INIT is automatically issued. When changing from normal mode to standby or sleep modes, a write of 1 to CCCR.INIT is automatically issued.
  • When GPIO1 is configured as a GPO for interrupts, the interrupts list represent the following and are active low:
    • 00: SPI Fault Interrupt. Matches SPIERR if not masked
    • 01: MCAN_INT:1 m_can_int1.
    • 10: Under-Voltage or Thermal Event Interrupt: Logical OR of UVCCOUT, UVSUP, UVVIO, TSD faults that are not masked.
  • When GPIO1 is configured as a GPO for interrupts, the interrupts list represent the following and are active low:
    • 00: SPI Fault Interrupt. Matches SPIERR if not masked
    • 01: MCAN_INT:1 m_can_int1.
    • 10: Under Voltage or Thermal Event Interrupt: Logical OR of UVCCOUT, UVSUP, UVVIO, TSD faults that are not masked.
  • nWKRQ pin defaults to a push-pull active low configuration based off an internal voltage rail. When configuring this to work off of VIO, the pin becomes and open drain output and a external pull-up resistor to the VIO rail is required.