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EM6819 Datasheet(PDF) 12 Page - EM Microelectronic - MARIN SA |
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EM6819 Datasheet(HTML) 12 Page - EM Microelectronic - MARIN SA |
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12 / 154 page  R EM6819 Copyright © 2009, EM Microelectronic-Marin SA 07 /09 – rev.D 12 www.emmicroelectronic.com 2. SYSTEM OVERVIEW The circuit’s function blocks can be splitted in 5 different categories: Power management and security functions Memories and CPU Core Clock selection, clock switching and system peripherals Digital and Analog internal peripherals Communication interfaces via the IO pads Figure 1, EM6819 overview Power Supply 0.9 – 3.6V DC-DC Up-Converter 2.1V, 2.5V, 2.9V, 3.3V Voltage Regulator Power On Reset BrownOut & Power Check Voltage Level Detector 32 – levels VSUP, PA, PC GPNVM (FLASH) 16.9 kByte Data Instruction Memory Memory Max 12 kB Max 6 kInstr Reset & wake-up Controller RC 8KHz Watch Dog IRQ & Event controller Crystal 32kHz Prescaler 2 10 stages Prescaler 1 15 stages for RTC GASP Debug-on-Chip ISP Monitor 2 wire & TM Timer1, Timer2 2x8 bit or 16 bit PWM , Freq Gen Input capure Output compare ADC 10 BIT 8 channels OPERTIONAL AMPLIFIER 3 terminals, PA, PC 8 BITS PORT A Pull-up, pull-down Interrupt, Capture Reset & Wake-up ADC, VLD, OPA,VREF Timer start & clock PWM, Signals 8 BITS PORT B SPI or soft UART PWM, signals GASP interface POWER MANAGEMENT & SECURITY MEMORIES & CORE Digital & Analog PERIPHERALS CLOCK & SYSTEM 8 BITS PORT C Pull-up, pull-down Interrupt,Capture ADC, VLD, OPA Timer start & clock PWM, Signals Crystal or Resonator 4MHz X1(optional) RC 2 MHz RC 15 MHz 32kHz / 4MHz Sleep Counter wake-up Timer3, Timer4 2x8 bit or 16 bit PWM , Freq Gen Input capure Output compare IO’s RAM 512 Bytes Fully static CoolRISC 8-bits CR816L 16 registers HW multiplier ROM-API Application subroutines PA[7:0] PB[5:0] PC[7:0] PB[7:6] TM Temp Sensor SPI 8 bits master or slave + DC-DC VREG Cvreg VSUP Cdcdc VSS VSSDC VSS2 VSUP2 Ldcdc Power management and security functions The power managment block assures a proper system start at power up with Power on reset and power check function. The internal Brownout supervises the CPU and core internal power supply and asserts a reset at undervoltage. The watchdog function monitors the CPU execution, wheras the VLD can be used to monitor internal or external voltages. Its results are available to the user to take actions accordingly. The DC-DC upconverter can be switched on by demand. Memories and CPU Core This part contains all user program memory (FLASH), the non volatile data memory (mapped into the FLASH memory), the RAM and the vendor supplied application subroutines (ROM-API) for non volatile memory modifications. An essential part of this block is also the CR816 microprocessor core. |
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