PIC16C926-I/CL Microchip Technology, PIC16C926-I/CL Datasheet - Page 81

• Manufacturer Part Number: PIC16C926-I/CL
• Description: 64/68-Pin CMOS Microcontrollers with LCD Driver
• Manufacturer: Microchip Technology

10.2
The A/D conversion time per bit is defined as T
A/D conversion requires a minimum 12T
conversion. The source of the A/D conversion clock is
software selected. The four possible options for T
are:
• 2T
• 8T
• 32T
• Internal A/D module RC oscillator
TABLE 10-1:
Note 1: The RC source has a typical T
2001 Microchip Technology Inc.
OSC
OSC
OSC
2: When the device frequencies are greater than 1 MHz, the RC A/D conversion clock source is only recom-
3: For extended voltage devices (LC), please refer to the Electrical Specifications section.
Selecting the A/D Conversion
Clock
mended for SLEEP operation.
Operation
RC
32T
2T
8T
(1, 2, 3)
T
OSC
OSC
OSC
AD
vs. MAXIMUM DEVICE OPERATING FREQUENCIES (STANDARD DEVICES (C))
AD Clock Source (T
AD
AD
time of 4 s, but can vary between 2-6 s.
per 10-bit
AD
. The
AD
Preliminary
AD
)
ADCS<1:0>
00
01
10
11
For correct A/D conversions, the A/D conversion clock
(T
of 1.6 s.
Table 10-1 shows the resultant T
the device operating frequencies and the A/D clock
source selected.
AD
) must be selected to ensure a minimum T
PIC16C925/926
Maximum Device Frequency
1.25 MHz
(Note 1)
20 MHz
AD
5 MHz
Max.
times derived from
DS39544A-page 79
AD
time