PIC16F88-I/P Microchip Technology, PIC16F88-I/P Datasheet - Page 120

• 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
12.2
The A/D conversion time per bit is defined as T
A/D conversion requires 9.0 T
The source of the A/D conversion clock is software
selectable. The seven possible options for T
• 2 T
• 4 T
• 8 T
• 16 T
• 32 T
• 64 T
• Internal A/D module RC oscillator (2-6 s)
For correct A/D conversions, the A/D conversion clock
(T
as small as possible, but no less than 1.6 s and not
greater than 6.4 s.
Table 12-1 shows the resultant T
the device operating frequencies and the A/D clock
source selected.
TABLE 12-1:
DS30487B-page 118
Note 1:
AD
) must be selected to ensure a minimum T
OSC
OSC
OSC
OSC
OSC
OSC
2:
3:
Operation
RC
16 T
32 T
64 T
Selecting the A/D Conversion
Clock
2 T
4 T
8 T
The RC source has a typical T
When the device frequencies are greater than 1 MHz, the RC A/D conversion clock source is only
recommended for SLEEP operation.
For extended voltage devices (LF), please refer to Section 18.0 “Electrical Characteristics”.
(1,2,3)
OSC
OSC
OSC
OSC
OSC
OSC
T
AD
vs. MAXIMUM DEVICE OPERATING FREQUENCIES – STANDARD DEVICES (C)
AD Clock Source (T
AD
AD
per 8-bit conversion.
ADCS<2>
times derived from
0
1
0
1
0
1
X
AD
AD
time of 4 s, but can vary between 2-6 s.
AD
AD
are:
. The
time
AD
Preliminary
)
ADCS<1:0>
12.3
The ADCON1, ANSEL, TRISA, and TRISB registers
control the operation of the A/D port pins. The port pins
that are desired as analog inputs must have their cor-
responding TRIS bits set (input). If the TRIS bit is
cleared (output), the digital output level (V
will be converted.
The A/D operation is independent of the state of the
CHS<2:0> bits and the TRIS bits.
Note 1: When reading the port register, all pins
00
00
01
01
10
10
11
2: Analog levels on any pin that is defined as
Configuring Analog Port Pins
configured as analog input channels will
read as cleared (a low level). Pins config-
ured as digital inputs will convert an ana-
log input. Analog levels on a digitally
configured input will not affect the
conversion accuracy.
a digital input (including the RA4:RA0 and
RB7:RB6 pins), may cause the input
buffer to consume current out of the
device specification.
Maximum Device Frequency
 2003 Microchip Technology Inc.
1.25 MHz
2.5 MHz
(Note 1)
10 MHz
20 MHz
20 MHz
5 MHz
Max.
OH
or V
OL
)