Datasheet

 2011 Microchip Technology Inc. Preliminary DS41576B-page 189
PIC12F752/HV752
TABLE 20-12: PIC12F752/HV752 A/D CONVERSION REQUIREMENTS
FIGURE 20-10: PIC12F752/HV752 A/D CONVERSION TIMING (NORMAL MODE)
Standard Operating Conditions (unless otherwise stated)
Operating temperature -40°C  T
A  +125°C
Param
No.
Sym Characteristic Min Typ† Max Units Conditions
AD130* T
AD A/D Clock Period 1.6 — 9.0 sTOSC-based, VREF 3.0V
3.0 — 9.0 sTOSC-based, VREF full range
(3)
A/D Internal RC
Oscillator Period 3.0 6.0 9.0 s
ADCS<2:0> = 11
At V
DD = 2.5V
1.6 4.0 6.0 sAt VDD = 5.0V
AD131 TCNV Conversion Time
(not including
Acquisition Time)
(1)
—11—TAD Set GO/DONE bit to new data in A/D
Result register
AD132* TACQ Acquisition Time 11.5 — s
AD133* T
AMP Amplifier Settling Time — — 5 s
AD134 TGO Q4 to A/D Clock Start — TOSC/2 — —
* These parameters are characterized but not tested.
† Data in “Typ” column is at 5.0V, 25°C unless otherwise stated. These parameters are for design guidance
only and are not tested.
Note 1: ADRESH and ADRESL registers may be read on the following T
CY cycle.
2: See Section 12.4 “A/D Acquisition Requirements” for minimum conditions.
3: Full range for PIC12HV752 powered by the shunt regulator is the 5V regulated voltage.
AD131
AD130
BSF ADCON0, GO
Q4
A/D CLK
A/D Data
ADRES
ADIF
GO
Sample
OLD_DATA
Sampling Stopped
DONE
NEW_DATA
987 3210
1 TCY
6
AD134 (TOSC/2)
1 TCY
AD132