16F876 Microchip Technology, 16F876 Datasheet - Page 171

• Manufacturer Part Number: 16F876
• Description: 28/40-pin 8-Bit CMOS FLASH Microcontrollers
• Manufacturer: Microchip Technology

FIGURE 15-20: A/D CONVERSION TIMING
TABLE 15-13: A/D CONVERSION REQUIREMENTS
Note 1: ADRES register may be read on the following T
Param
130
131
132
134
1999 Microchip Technology Inc.
No.
*
†
§
Note 1: If the A/D clock source is selected as RC, a time of T
A/D DATA
2: See Section 11.1 for min conditions.
SAMPLE
A/D CLK
BSF ADCON0, GO
ADRES
These parameters are characterized but not tested.
Data in "Typ" column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance only and are not
tested.
This specification ensured by design.
T
T
Sym Characteristic
T
T
ADIF
ACQ
CNV
AD
GO
GO
Q4
instruction to be executed.
A/D clock period
Conversion time (not including S/H time)
(Note 1)
Acquisition time
Q4 to A/D clock start
132
(T
OSC
/2)
Standard(F)
Extended(LF)
Standard(F)
Extended(LF)
9
(1)
8
OLD_DATA
CY
7
cycle.
SAMPLING STOPPED
Note 2
Min
10*
1.6
3.0
2.0
3.0
CY
—
is added before the A/D clock starts. This allows the SLEEP
131
130
T
OSC
Typ†
4.0
6.0
40
—
—
—
—
/2 §
2
Max
6.0
9.0
12
—
—
—
—
—
1
Units
T
—
AD
s
s
s
s
s
s
1 T
0
T
T
A/D RC Mode
A/D RC Mode
The minimum time is the ampli-
fier settling time. This may be
used if the "new" input voltage
has not changed by more than 1
LSb (i.e., 20.0 mV @ 5.12V)
from the last sampled voltage
(as stated on C
If the A/D clock source is
selected as RC, a time of T
added before the A/D clock
starts. This allows the SLEEP
instruction to be executed.
PIC16F87X
CY
OSC
OSC
based, V
based, V
NEW_DATA
DONE
Conditions
DS30292B-page 171
REF
REF
HOLD
).
3.0V
2.0V
CY
is