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EM6640WS11 Datasheet(PDF) 2 Page - EM Microelectronic - MARIN SA |
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EM6640WS11 Datasheet(HTML) 2 Page - EM Microelectronic - MARIN SA |
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2 / 62 page  EM6640 03/02 REV. C/446 Copyright 2002, EM Microelectronic-Marin SA 2 www.emmicroelectronic.com EM6640 at a glance • Power Supply - Low voltage, low power architecture including internal voltage regulator. - 1.9V ... 5.5V battery voltage. - 600 kHz RC oscillator. - 42µA typical in active mode @ 3V, 25C °. - 8µA typical in standby mode @ 3V, 25C °. - 0.3µA typical in sleep mode @ 3V, 25C °. • RAM - 80 x 4 bit, directly addressable. • ROM - 1280 x 16 bit metal mask programmable. • EEPROM - 32 x 8 bit, indirectly addressable (6 bits used to adjust the oscillator frequency). - Interrupt request at the end of writing operation. - 60µA typical during read mode @ 3V, 25C °. - 45µA typical during erase/write mode @ 3V, 25C ° • CPU - 4 bits RISC architecture. - 2 clock cycles per instruction. - 72 basics instructions. • Main Operating Modes and Resets - Active mode (CPU is running). - Standby mode (CPU in halt). - Sleep mode (No clock, reset state). - Initial reset on power on (POR). - Watchdog timer (time out) reset. - Oscillation detection watchdog reset. - Reset with input combination. • 4 Bits Input Port A - Direct input read. - Reset with input combination (register selectable). - Debounced or direct input (register selectable). - Interrupt request on input’s rising or falling edge (register selectable). - Pull-up, pull-down or none (register selectable). - Software test variables for conditional jumps. - PA[0] and PA[3] are input for the event counter. • 4 Bits Input/Output Port B - Input or Output port bitwise. - Direct input read. - CMOS or N-channel open drain outputs. - Pull-up selectable in N-channel open drain mode. - Pull-down or pull-up selectable by register. - Selectable pulse width modulation (PWM). - PWM output on PB[3]. - Output frequencies 600kHz, 37.5kHz, 2.3kHz. • 4 Bits Input/Output Port C - Input or output port bitwise. - Direct input read. - CMOS or N-channel open drain outputs. - Pull-up selectable in N-channel open drain mode. - Pull-down or pull-up selectable by register. - Serial Write Buffer clock and data output. • Oscillator - RC Oscillator at f=600kHz ±1% typ (-30°C...40°C). - Absolute frequency adjustable with 6 bits EEPROM. - No external components are necessary. • Serial Write Buffer (SWB) - Max. 256 bits long clocked with 150kHz; 75kHz 9.4kHz; 2,3kHz. External clock capability in automatic mode, max: 1.5MHz. - Automatic send mode: number of clocks of the last nibble selectable by register and last data level latched. External clock division capability by 1/1, 1/4, 1/88 and 1/352. - Interactive send mode: interrupt request when buffer is empty. - Data sent at VDD or VregLogic levels selectable by mask option. • Prescaler - 19 stages system clock divider down to 1Hz. - 3 interrupts requests: 9.4kHz; 586Hz and 1Hz. - Prescaler reset. • Supply voltage Level Detector - 2 levels software selectable (2,2V or 2,5V). - Busy flag during measurement. - Interrupt request when measurement is ready. • 10-Bit Universal Counter - 10, 8, 6, 4 bit up/down counting. - 8 different input clocks. - Event counting with PA[0] and PA[3] as input clocks. - Full 10 bits or limited (8, 6, 4 bits) compare function. - 2 interrupt requests (on compare and on 0). - Pulse width modulation (PWM) output on PB[3]. • Sleep Counter Reset (SCR) - Wake up automatically the EM6640 from sleep. - 8 timings selectable by register. - Inhibit SCR by register. • Watchdogs - Oscillation detection circuit. - Digital watchdog timer reset. • Interrupt Controller - 4 external interrupt sources from PortA. - 5 internal interrupt sources: Prescaler (3), Timer (2), SVLD (1), EEPROM (1), SWB (1) NB: All frequencies written in this document are related to a typical system clock of 600 kHz. |
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