8-bit Microcontrollers中的主题 Re: MC68H(R)C908JL3 help

MC68H(R)C908JL3 help

wasimakram — Tue, 06 Apr 2010 16:34:28 GMT

hi freescale i have problem related to this ic ...

i am trying to program THIS MC68H(R)C908JL3 IC by MON-08 but ic has not be programmed ..........

please send me the circuit of IRQ ,RESET ,oscillator with a simple led on-off program

please send anyone

Re: MC68H(R)C908JL3 help

bigmac — Tue, 06 Apr 2010 20:21:01 GMT

Hello Wasim, and welcome to the forum.

Does the programming arrangement shown in Fig. 7.1 of the datasheet provide the information that you require? Application note AN-HK-33 may also be of interest.

Regards,

Mac

Re: MC68H(R)C908JL3 help

wasimakram — Wed, 07 Apr 2010 16:48:10 GMT

now the programming is done on the board and booting too

but a problem is still that when i remove the MON-08 CONEECTION from computer then booting is stop .

i think this is due to any fault in circuit of RESET,OSCILLATOR,IRQ

i have used

RESET------100K FROM VDDTO 28 PIN

IRQ--------10K FROM VDD TO 1PIN

CRYSTAL IS 4MHZ BOTH end is pull-down by 22pf capacitor and legs are connected by 440k resistance.........

where is fault ?