L9805E Super smart power motor driver with 8-Bit MCU, RAM, EEPROM, ADC, WDG, Timers, PWM and H-bridge driver Features ■ 6.4-18V supply operating range 16 MHz maximum oscillator frequency 8 MHz maximum internal clock frequency Oscillator supervisor Fully static operation User EPROM/OTP: 16 Kbytes Data EEPROM: 128 bytes 10 multifunctional bidirectional I/O lines Two 16-bit Timers, each featuring: – 2 input captures – 2 output compares – External clock input (on Timer 1) – PWM and pulse generator modes Two programmable 16-bit PWM generator modules. CAN peripheral including bus line interface according 2A/B passive specifications Software watchdog for system integrity Master reset, power-on reset, low voltage reset 63 basic Instructions and 17 main addressing modes 8 x 8 unsigned multiply instruction Complete development support on DOS/WINDOWSTM Real-Time Emulator Full software package on DOS/WINDOWS™ (C-Compiler, Cross-Assembler, Debugger). Device summary Part number

Central processing unit (CPU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.1 2.2 Clocks, reset, interrupts & power saving modes . . . . . . . . . . . . . . . . . 18 3.1 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 External clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Dedicated control status register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Power-on reset - Low voltage detection . . . . . . . . . . . . . . . . . . . . . . . . . 25 Power saving...

Digital section power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 4.2.1 VDD short circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Analog section power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 4.3.1 VCC Short Circuit Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Register description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Controller area network (CAN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 5.6.1 5.6.2 CAN transceiver disabling function . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 Register description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 ST7 addressing modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 Instruction groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Table 13. Table 14. Table 15. Table 16. Table 17. Table 18. Table 19. Table 20. Table 21. Table 22. Table 23. Table 24. Table 25. Table 26. Table 27. Table 28. Table 29. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Memory map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Recommended values for 16 MHz crystal...

List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Figure 30. Figure 31. Figure 32. Figure 33. Figure 34. Figure 35. Figure 36. Figure 37. Figure 38. Figure 39. Figure 40. Figure 41. Figure 42. Figure 43. Figure 44. Figure 45. Figure 46. Figure 47. Figure 48. L9805E block diagram . . . . . . . . . . . . . . . . . . . . . ....

List of figures Example - power bridge waveform, PWM up brake driving mode . . . . . . . . . . . . . . . . . . . 98 EEPROM block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Data EEPROM programming cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 EEPROM programming flowchart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 HiQUAD-64: qJA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

General description General description Introduction The L9805E is a Super Smart Power device suited to drive resistive and inductive loads under software control. It includes a ST7 microcontroller and some peripherals. The microcontroller can execute the software contained in the program EPROM/ROM and drive, through dedicated registers, the power bridge. The internal voltage regulators rated to the automotive environment, PWM modules, CAN transceiver and controller ISO9411 transceiver, timers, temperature sensor and the AID converter allow the device to realize by itself a complete application,...

General description Figure 1. L9805E block diagram TEMP SENSOR

General description NU PB1/EXTCLK_2 NU NU PWMO PWMI NRESET CAN_H CAN_L GND VDD VB2 VB1 VBR VBR VBR NU NU NU NU OSCIN OSCOUT Pin description AD2-AD4: Analog input to ADC. PA0/OCMP2_1-PA1/OCMP1_1: I/Os or Output compares on Timer 1. Alternate function software selectable (by setting OC2E or OC1E in CR2 register: bit 6 or 7 at 0031h). When used as an alternate function, this pin is a push-pull output as requested by Timer 1. Otherwise, this pin is a triggered floating input or a push-pull output. PA2/ICAP2_1-PA3/ICAP1_1: I/Os or Input captures on Timer 1. Before using this I/O as alternate inputs,...

General description PA5/OCMP2_2-PA6/OCMP1_2: I/Os or Output Compares on Timer 2. Alternate function software selectable (by setting OC2E or OC1E in CR2 register: bit 6 or 7 at 0041h). When used as alternate functions, these pins are push-pull outputs as requested by Timer 2. Otherwise, these pins are triggered floating inputs or push-pull outputs. PA7/ICAP2_2-PB0/ICAP1_2: I/Os or Input Captures on Timer 2. Before using these I/Os as alternate inputs, they must be configured by software in input mode (DDR=0). In this case, these pins are triggered floating inputs. Otherwise (I/O function), these...