INTRODUCTION
The L9805 is a Super Smart Power device suited to drive resistive and inductive loads under software control. It includes a ST7 microcontroller and some pheripherals. 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, ISO 9141 transceiver, timers, temperature sensor and the AtoD converter allow the device to realize by itself a complete application, in line with the most common mechatronic requirements.

■ 6.4-18V Supply Operating Range
■ 16 MHz Maximum Oscillator Frequency
■ 8 MHz Maximum Internal Clock Frequency
■ Oscillator Supervisor
■ Fully Static operation
■ -40°C to + 150°C Temperature Range
■ User EPROM/OTP: 16 Kbytes
■ Data RAM: 256 bytes
■ Data EEPROM: 128 bytes
■ 64 pin HiQUAD64 package
■ 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
■ 10-bit Analog-to-Digital Converter
■ Software Watchdog for system integrity
■ Master Reset, Power-On Reset, Low Voltage Reset
■ 70mΩ DMOS H-bridge.
■ 8-bit Data Manipulation
■ 63 basic Instructions and 17 main Addressing Modes
■ 8 x 8 Unsigned Multiply Instruction
■ True Bit Manipulation
■ Complete Development Support on DOS/ WINDOWSTM Real-Time Emulator
■ Full Software Package on DOS/WINDOWSTM (C-Compiler, Cross-Assembler, Debugger)