PIC18F6628-E/PT Microchip Technology, PIC18F6628-E/PT Datasheet - Page 35
![PIC18 With 96KB Flash, 4KB RAM, 1024 DataEE, 12-bit ADC 64 TQFP 10x10x1mm TRAY](/photos/6/81/68123/c04-066_pf_sml.jpg)
PIC18F6628-E/PT
Manufacturer Part Number
PIC18F6628-E/PT
Description
PIC18 With 96KB Flash, 4KB RAM, 1024 DataEE, 12-bit ADC 64 TQFP 10x10x1mm TRAY
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Specifications of PIC18F6628-E/PT
Core Processor
PIC
Core Size
8-Bit
Speed
25MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
54
Program Memory Size
96KB (48K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
3.8K x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 12x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
64-TFQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F6628-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
The value in the ADRESH:ADRESL registers is
unknown following Power-on and Brown-out Resets and
is not affected by any other Reset.
After the A/D module has been configured as desired,
the selected channel must be acquired before the
conversion is started. The analog input channels must
have their corresponding TRIS bits selected as an
input. To determine acquisition time, see Section 2.1
“A/D Acquisition Requirements”. After this acquisi-
tion time has elapsed, the A/D conversion can be
started. An acquisition time can be programmed to
occur between setting the GO/DONE bit and the actual
start of the conversion.
The following steps should be followed to perform an A/D
conversion:
1.
2.
3.
4.
FIGURE 2-3:
© 2009 Microchip Technology Inc.
Configure the A/D module:
• Configure analog pins, voltage reference and
• Select A/D input channel (ADCON0)
• Select A/D acquisition time (ADCON2)
• Select A/D conversion clock (ADCON2)
• Turn on A/D module (ADCON0)
Configure A/D interrupt (if desired):
• Clear ADIF bit
• Set ADIE bit
• Set GIE bit
Wait the required acquisition time (if required).
Start conversion:
• Set GO/DONE bit (ADCON0<1>)
digital I/O (ADCON1)
Legend: C
V
AIN
Rs
ANALOG INPUT MODEL
V
I
R
SS
C
R
LEAKAGE
T
PIN
IC
HOLD
SS
ANx
C
5 pF
PIN
= Input Capacitance
= Threshold Voltage
= Leakage Current at the pin due to
= Interconnect Resistance
= Sampling Switch
= Sample/Hold Capacitance (from DAC)
= Sampling Switch Resistance
various junctions
V
DD
V
V
T
T
= 0.6V
= 0.6V
I
±100 nA
5.
6.
7.
FIGURE 2-2:
LEAKAGE
PIC18F8723 FAMILY
R
Wait for A/D conversion to complete by either:
• Polling for the GO/DONE bit to be cleared
OR
• Waiting for the A/D interrupt
Read A/D Result registers (ADRESH:ADRESL);
clear bit, ADIF, if required.
For next conversion, go to step 1 or step 2, as
required. The A/D conversion time per bit is
defined as T
required before the next acquisition starts.
FFEh
FFFh
IC
003h
002h
001h
000h
≤ 1k
V
Sampling
SS
DD
Switch
AD
6V
5V
4V
3V
2V
R
. A minimum wait of 2 T
Analog Input Voltage
SS
A/D TRANSFER FUNCTION
Sampling Switch
1
V
C
SS
2
HOLD
3
= 25 pF
DS39894B-page 35
4
(kΩ)
AD
is