PIC16F676-I Datasheet, PDF (50/132 Pages) Microchip Technology – 14-Pin, Flash-Based 8-Bit CMOS Microcontrollers

PIC16F630/676
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 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
PORTA
—
— PORTA5 PORTA4 PORTA3 PORTA2 PORTA1 PORTA0 --xx xxxx --uu uuuu
07h
PORTC
—
— PORTC5 PORTC4 PORTC3 PORTC2 PORTC1 PORTC0 --xx xxxx --uu uuuu
0Bh, 8Bh INTCON GIE
PEIE
T0IE
INTE RAIE
T0IF
INTF
RAIF 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
—
CHS2 CHS1 CHS0
GO
ADON 00-0 0000 00-0 0000
85h
TRISA
—
—
TRISA5 TRISA4 TRISA3 TRISA2 TRISA1 TRISA0 --11 1111 --11 1111
87h
TRISC
—
—
TRISC5 TRISC4 TRISC3 TRISC2 TRISC1 TRISC0 --11 1111 --11 1111
8Ch
PIE1
EEIE ADIE
—
—
CMIE
—
— TMR1IE 00-- 0--0 00-- 0--0
91h
ANSEL ANS7 ANS6 ANS5 ANS4 ANS3 ANS2 ANS1 ANS0 1111 1111 1111 1111
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
ADCON1 —
ADCS2 ADCS1 ADCS0
—
—
—
— -000 ---- -000 ----
Legend: x = unknown, u = unchanged, - = unimplemented read as ‘0’. Shaded cells are not used for A/D converter module.
DS40039F-page 50
 2010 Microchip Technology Inc.