pic24hj12gp202 Microchip Technology Inc., pic24hj12gp202 Datasheet - Page 216

• Manufacturer Part Number: pic24hj12gp202
• Description: High-performance, 16-bit Digital Signal Controllers
• Manufacturer: Microchip Technology Inc.

PIC24HJ12GP201/202
FIGURE 21-17:
TABLE 21-37: ADC CONVERSION (12-BIT MODE) TIMING REQUIREMENTS
DS70282B-page 214
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
SAMP
DONE
AD1IF
Section 28. “10/12-bit ADC without DMA” in the “PIC24H Family
Reference Manual”. Refer to the Microchip web site for the latest
PIC24H Family Reference Manual chapters.
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 can 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
ADC CONVERSION (12-BIT MODE) TIMING CHARACTERISTICS
(ASAM = 0, SSRC<2:0> = 000)
1
from ADC Off to ADC On
(2)
2
Clear SAMP
Characteristic
AD60
T
SAMP
3
(2)
4
SAMP
(2)
5
Clock Parameters
Timing Parameters
(2)
Conversion Rate
is described in
Preliminary
6
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature
0.5 T
3 T
117.6
Min.
—
—
—
—
—
1
AD
AD
1.0 T
0.5 T
14 T
(1)
Typ
250
—
—
—
—
—
AD
AD
AD
AD55
6 – Convert bit 10.
7 – Convert bit 1.
8 – Convert bit 0.
9 – One T
5 – Convert bit 11.
1.5 T
Max.
500
—
—
—
—
—
5
AD
-40°C ≤ T
-40°C ≤ T
AD
Units
Ksps
for end of conversion.
ns
ns
ns
—
—
—
—
μs
© 2007 Microchip Technology Inc.
A
A
≤ +85°C for Industrial
≤ +125°C for Extended
7
Auto Convert Trigger
not selected
8
Conditions
9
—
—
—