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PIC16F688-E/ST Datasheet(PDF) 63 Page - Microchip Technology |
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PIC16F688-E/ST Datasheet(HTML) 63 Page - Microchip Technology |
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63 / 174 page  2004 Microchip Technology Inc. Preliminary DS41203B-page 61 PIC16F688 REGISTER 7-3: VRCON – VOLTAGE REFERENCE CONTROL REGISTER (ADDRESS: 99h) TABLE 7-2: REGISTERS ASSOCIATED WITH COMPARATOR MODULE R/W-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 VREN —VRR — VR3 VR2 VR1 VR0 bit 7 bit 0 bit 7 VREN: CVREF Enable bit 1 = CVREF circuit powered on 0 = CVREF circuit powered down, no IDD drain and CVREF = VSS. bit 6 Unimplemented: Read as ‘0’ bit 5 VRR: CVREF Range Selection bit 1 = Low range 0 = High range bit 4 Unimplemented: Read as ‘0’ bit 3-0 VR<3:0>: CVREF value selection 0 ≤ VR<3:0> ≤ 15 When VRR = 1: CVREF = (VR<3:0>/24) * VDD When VRR = 0: CVREF = VDD/4 + (VR<3:0>/32) * VDD Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ - n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown 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 0Bh/8Bh INTCON GIE PEIE T0IE INTE RAIE T0IF INTF RAIF 0000 0000 0000 0000 0Ch PIR1 EEIF ADIF RCIF C2IF C1IF OSFIF TXIF TMR1IF 0000 0000 0000 0000 19h CMCON0 C2OUT C1OUT C2INV C1INV CIS CM2 CM1 CM0 0000 0000 0000 0000 1Ah CMCON1 — — — — — — T1GSS C2SYNC ---- --10 ---- --10 85h/185h TRISA — — TRISA5 TRISA4 TRISA3 TRISA2 TRISA1 TRISA0 --11 1111 --11 1111 87h/187h TRISC — — TRISC5 TRISC4 TRISC3 TRISC2 TRISC1 TRISC0 --11 1111 --11 1111 8Ch PIE1 EEIE ADIE RCIE C2IE C1IE OSFIE TXIE TMR1IE 0000 0000 0000 0000 99h VRCON VREN —VRR — VR3 VR2 VR1 VR0 0-0- 0000 0-0- 0000 Legend: x = unknown, u = unchanged, - = unimplemented, read as ‘0’. Shaded cells are not used by the comparator or Comparator Voltage Reference module. |
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