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RFPIC12F675 Datasheet(PDF) 46 Page - Microchip Technology |
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RFPIC12F675 Datasheet(HTML) 46 Page - Microchip Technology |
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46 / 136 page  rfPIC12F675 DS70091A-page 44 Preliminary 2003 Microchip Technology Inc. 7.3 A/D Operation During SLEEP The A/D converter module can operate during SLEEP. This requires the A/D clock source to be set to the internal RC oscillator. When the RC clock source is selected, the A/D waits one instruction before starting the conversion. This allows the SLEEP instruction to be executed, thus eliminating much of the switching noise from the conversion. When the conversion is complete, the GO/DONE bit is cleared, and the result is loaded into the ADRESH:ADRESL registers. If the A/D interrupt is enabled, the device awakens from SLEEP. If the A/D interrupt is not enabled, the A/D module is turned off, although the ADON bit remains set. When the A/D clock source is something other than RC, a SLEEP instruction causes the present conversion to be aborted, and the A/D module is turned off. The ADON bit remains set. 7.4 Effects of RESET A device RESET forces all registers to their RESET state. Thus the A/D module is turned off and any pending conversion is aborted. The ADRESH:ADRESL registers are unchanged. TABLE 7-2: SUMMARY OF A/D REGISTERS Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Value on: POR, BOD Value on all other RESETS 05h GPIO — — GPIO5 GPIO4 GPIO3 GPIO2 GPIO1 GPIO0 --xx xxxx --uu uuuu 0Bh, 8Bh INTCON GIE PEIE T0IE INTE GPIE T0IF INTF GPIF 0000 0000 0000 000u 0Ch PIR1 EEIF ADIF — — CMIF — — TMR1IF 00-- 0--0 00-- 0--0 1Eh ADRESH Most Significant 8 bits of the Left Shifted A/D result or 2 bits of the Right Shifted Result xxxx xxxx uuuu uuuu 1Fh ADCON0 ADFM VCFG — — CHS1 CHS0 GO ADON 00-- 0000 00-- 0000 85h TRISIO — — TRISIO5 TRISIO4 TRISIO3 TRISIO2 TRISIO1 TRISIO0 --11 1111 --11 1111 8Ch PIE1 EEIE ADIE — — CMIE — — TMR1IE 00-- 0--0 00-- 0--0 9Eh ADRESL Least Significant 2 bits of the Left Shifted A/D Result or 8 bits of the Right Shifted Result xxxx xxxx uuuu uuuu 9Fh ANSEL — ADCS2 ADCS1 ADCS0 ANS3 ANS2 ANS1 ANS0 -000 1111 -000 1111 Legend: x = unknown, u = unchanged, - = unimplemented read as '0'. Shaded cells are not used for A/D converter module. |
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