PIC16F88-I/P Microchip Technology, PIC16F88-I/P Datasheet - Page 118

• Manufacturer Part Number: PIC16F88-I/P
• Description: IC MCU FLASH 4KX14 EEPROM 18DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F88-I/P

• Program Memory Type: FLASH
• Program Memory Size: 7KB (4K x 14)
• Package / Case: 18-DIP (0.300", 7.62mm)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Eeprom Size: 256 x 8
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 7x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 368 B
• Interface Type: SSP/USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163014
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 7-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: ACICE0202 - ADAPTER MPLABICE 18P 300 MILAC164010 - MODULE SKT PROMATEII DIP/SOIC
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC16F87/88
The ADRESH:ADRESL registers contain the result of
the A/D conversion. When the A/D conversion is com-
plete, the result is loaded into the A/D result register
pair, the GO/DONE bit (ADCON0<2>) is cleared, and
A/D Interrupt Flag bit, ADIF, is set. The block diagram
of the A/D module is shown in Figure 12-1.
After the A/D module has been configured as desired,
the selected channel must be acquired before the con-
version is started. The analog input channels must
have their corresponding TRIS bits selected as inputs.
To determine sample time, see Section 12.1. After this
sample time has elapsed, the A/D conversion can be
started.
These steps should be followed for doing an A/D
conversion:
1.
FIGURE 12-1:
DS30487B-page 116
Configure the A/D module:
• Configure analog/digital I/O (ANSEL)
• Configure voltage reference (ADCON1)
• Select A/D input channel (ADCON0)
• Select A/D conversion clock (ADCON0)
• Turn on A/D module (ADCON0)
Converter
A/D
A/D BLOCK DIAGRAM
(Reference
(Reference
Voltage)
Voltage)
V
V
REF
REF
-
+
(Input Voltage)
VCFG1:VCFG0
VCFG1:VCFG0
V
IN
Preliminary
AV
AV
DD
SS
CHS2:CHS0
2.
3.
4.
5.
6.
7.
Configure A/D interrupt (if desired):
• Clear ADIF bit
• Set ADIE bit
• SET PEIE bit
• Set GIE bit
Wait the required acquisition time.
Start conversion:
• Set GO/DONE bit (ADCON0)
Wait for A/D conversion to complete, by either:
• Polling for the GO/DONE bit to be cleared
• Waiting for the A/D interrupt
Read A/D Result register pair
(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.
(with interrupts disabled); OR
110
101
100
011
010
001
000
AD
. A minimum wait of 2 T
 2003 Microchip Technology Inc.
RB7/AN6/PGD/T1OSI
RB6/AN5/PGC/T1OSO/T1CKI
RA4/AN4/T0CKI/C2OUT
RA3/AN3/V
RA2/AN2/CV
RA1/AN1
RA0/AN0
REF
REF
+/C1OUT
/V
REF
-
AD
is