PIC18C658/CL Microchip Technology, PIC18C658/CL Datasheet - Page 234
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PIC18C658/CL
Manufacturer Part Number
PIC18C658/CL
Description
IC MCU OTP 16KX16 CAN 68-PLCC
Manufacturer
Microchip Technology
Series
PIC® 18Cr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16C770-ISO.pdf
(8 pages)
3.PIC18C658-IPT.pdf
(366 pages)
4.PIC18C658-IPT.pdf
(16 pages)
5.PIC18C658-IPT.pdf
(16 pages)
6.PIC18C658-IPT.pdf
(16 pages)
Specifications of PIC18C658/CL
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
CAN, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
52
Program Memory Size
32KB (16K x 16)
Program Memory Type
OTP
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
68-PLCC
For Use With
AC164308 - MODULE SKT FOR PM3 68PLCCDVA18PQ640 - DEVICE ADAPT PIC18C658 64-TQFP
Lead Free Status / RoHS Status
Request inventory verification / Request inventory verification
Eeprom Size
-
Other names
Q1068347
- PIC16F616T-ISL PDF datasheet
- PIC16C770-ISO PDF datasheet #2
- PIC18C658-IPT PDF datasheet #3
- PIC18C658-IPT PDF datasheet #4
- PIC18C658-IPT PDF datasheet #5
- PIC18C658-IPT PDF datasheet #6
- Current page: 234 of 366
- Download datasheet (7Mb)
PIC18CXX8
18.4
Figure 18-3 shows the operation of the A/D converter
after the GO bit has been set. Clearing the GO/DONE
bit during a conversion will abort the current conver-
sion. The A/D result register pair will NOT be updated
with the partially completed A/D conversion sample.
That is, the ADRESH:ADRESL registers will continue
to contain the value of the last completed conversion
(or the last value written to the ADRESH:ADRESL reg-
isters). After the A/D conversion is aborted, a 2T
is required before the next acquisition is started. After
this 2T
automatically started.
FIGURE 18-3: A/D CONVERSION T
DS30475A-page 234
Note:
AD
A/D Conversions
Tcy - T
wait, acquisition on the selected channel is
Set GO bit
The GO/DONE bit should NOT be set in
the same instruction that turns on the A/D.
Holding capacitor is disconnected from analog input (typically 100 ns)
AD
Conversion Starts
T
AD
b9
1 T
AD
b8
2 T
AD
b7
3 T
AD
b6
AD
Next Q4: ADRESH/ADRESL is loaded, GO bit is cleared,
Advanced Information
4 T
CYCLES
AD
AD
b5
5 T
wait
ADIF bit is set, holding capacitor is connected to analog input.
AD
b4
6 T
AD
b3
7 T
18.5
An A/D conversion can be started by the “special event
trigger” of the CCP2 module. This requires that the
CCP2M3:CCP2M0 bits (CCP2CON<3:0>) be pro-
grammed as 1011 and that the A/D module is enabled
(ADON bit is set). When the trigger occurs, the
GO/DONE bit will be set, starting the A/D conversion,
and the Timer1 (or Timer3) counter will be reset to zero.
Timer1 (or Timer3) is reset to automatically repeat the
A/D acquisition period with minimal software overhead
(moving ADRESH/ADRESL to the desired location).
The appropriate analog input channel must be selected
and the minimum acquisition done before the “special
event trigger” sets the GO/DONE bit (starts a conver-
sion).
If the A/D module is not enabled (ADON is cleared), the
“special event trigger” will be ignored by the A/D mod-
ule, but will still reset the Timer1 (or Timer3) counter.
AD
b2
8
Use of the CCP2 Trigger
T
AD
b1
9 T
AD
b0
10
T
AD
b0
2000 Microchip Technology Inc.
11
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