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EM6540 Datasheet(PDF) 8 Page - EM Microelectronic - MARIN SA |
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EM6540 Datasheet(HTML) 8 Page - EM Microelectronic - MARIN SA |
8 / 28 page EM65XX Copyright © 2005, EM Microelectronic-Marin SA 8 www.emmicroelectronic.com Watchdog metal option The Watch-Dog timer is always active. Watchdog metal option Watch-Dog timer ACTIVE Watch-Dog timer INACTIVE W0 WD timer x Supply Voltage Level Detector T= -10°C to 60°C Symb. Parameter Min. Typ. Max. Unit VSVLD1 SVLD voltage Level1 2.02 2.30 2.38 V Additional registers In EM6504 there are two additional registers replacing metal options in EM6604. Register name add hex add dec reset value write_bits read_bits Remarks b'3210 Read/Write_bits PaIRQedge 63 99 0000 0: PA0r 1: PA1r 2: PA2r 3: PA3r Port A IRQ edge 1 = rising 0 = falling PcOE 60 96 0000 0: PCoe0 1: PCoe1 2: PCoe2 3: PCoe3 Port C Output Enable 1 = output 0 = input Because these two registers replace the metal option in EM6604 it is advised that they are written as first two instructions in the main program and that they are executed only once. They should not be changed later in the program because the metal options in EM6604 are fixed. Electrical specifications Standard Operating Conditions Parameter Value Description Temperature 0°C...+60°C VDD +2.0 ...+5.0V VSS 0 V (reference) CVDDCA min. 100nF (note1) Vreg switched logic supply capacitor fq 32768 Hz nominal frequency Rqs 35 kOhm typical quartz serial resistor CL 8.2pF typical quartz load capacitance df/f +/- 30 ppm quartz frequency tolerance Note1: This capacitor maintains the Regulated Supply to the core when the core has been isolated by the internal Supply switch during driving the high current outputs. The user should be aware that the selection of this capacitor will dictate the time that the core can be isolated. |
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