RFPIC12F675 Datasheet, PDF (44/136 Pages) Microchip Technology – FLASH-Based Microcontroller with ASK/FSK Transmitter

rfPIC12F675
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.
DS70091B-page 44
Preliminary
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