dsPIC33FJ32MC204 Microchip Technology, dsPIC33FJ32MC204 Datasheet - Page 274

• Manufacturer Part Number: dsPIC33FJ32MC204
• Description: (dsPIC33FJ16MC304 / dsPIC33FJ32MC20x) 16-bit Microcontrollers
• Manufacturer: Microchip Technology

FIGURE 23-22:
TABLE 23-41: ADC CONVERSION (12-BIT MODE) TIMING REQUIREMENTS
DS70283B-page 272
AC CHARACTERISTICS
AD50
AD51
AD55
AD56
AD57
AD60
AD61
AD62
AD63
Note 1:
Param
No.
1 – Software sets AD1CON. SAMP to start sampling.
2 – Sampling starts after discharge period. T
3 – Software clears AD1CON. SAMP to start conversion.
4 – Sampling ends, conversion sequence starts.
Instruction
Execution
2:
ADCLK
Section 28. “10/12-bit ADC without DMA” in the
“dsPIC33F Family Reference Manual”.
DONE
SAMP
AD1IF
T
t
t
F
T
t
t
t
t
RC
CONV
PCS
PSS
CSS
DPU
Symbol
AD
SAMP
CNV
Because the sample caps will eventually lose charge, clock rates below 10 kHz may affect linearity
performance, especially at elevated temperatures.
These parameters are characterized but not tested in manufacturing.
AD61
Set SAMP
AD50
ADC Clock Period
ADC Internal RC Oscillator
Period
Conversion Time
Throughput Rate
Sample Time
Conversion Start from Sample
Trigger
Sample Start from Setting
Sample (SAMP) bit
Conversion Completion to
Sample Start (ASAM = 1)
Time to Stabilize Analog Stage
from ADC Off to ADC On
ADC CONVERSION (12-BIT MODE) TIMING CHARACTERISTICS
(ASAM = 0, SSRC<2:0> = 000)
1
(2)
2
Clear SAMP
Characteristic
AD60
T
SAMP
3
(2)
4
SAMP
(2)
(2)
5
Timing Parameters
Clock Parameters
Conversion Rate
is described in
Preliminary
6
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature
0.5 T
117.6
3 T
Min.
—
—
—
—
—
1
AD
AD
1.0 T
0.5 T
14 T
Typ
250
—
—
—
—
—
AD
AD
AD
AD55
1.5 T
5 – Convert bit 11.
6 – Convert bit 10.
7 – Convert bit 1.
8 – Convert bit 0.
9 – One T
Max.
500
—
—
—
—
—
5
AD
-40°C ≤ T
-40°C ≤ T
Units
AD
Ksps
ns
ns
ns
μs
—
—
—
—
© 2007 Microchip Technology Inc.
for end of conversion.
A
A
≤ +85°C for Industrial
≤ +125°C for Extended
7
Auto convert trigger not
selected
8
Conditions
9
—
—
—