PIC18F87K90T-I/PT Microchip Technology, PIC18F87K90T-I/PT Datasheet - Page 381

• Manufacturer Part Number: PIC18F87K90T-I/PT
• Description: 128kB Flash, 4kB RAM, 1kB EE, 16MIPS, NanoWatt XLP, LCD, 5V 80 TQFP 12x12x1mm T/
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F87K90T-I/PT

• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 128 KB
• Data Ram Size: 4 KB
• Interface Type: I2C, SPI
• Maximum Clock Frequency: 64 MHz
• Number Of Timers: 11
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Operating Temperature: + 125 C
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit, 24 Channel
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 64MHz
• Connectivity: I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 69
• Eeprom Size: 1K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 24x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP
• Lead Free Status / Rohs Status: Details

REGISTER 23-10: ANCON2: A/D PORT CONFIGURATION REGISTER 2
The analog reference voltage is software-selectable to
either the device’s positive and negative supply voltage
(AV
RA3/AN3/V
two additional internal voltage reference selections:
2.048V and 4.096V.
The A/D Converter can uniquely operate while the
device is in Sleep mode. To operate in Sleep, the A/D
conversion clock must be derived from the A/D
Converter’s internal RC oscillator.
The output of the Sample-and-Hold (S/H) is the input
into the converter, which generates the result via
successive approximation.
 2009-2011 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-0
Note 1:
ANSEL23
DD
R/W-1
and AV
(1)
REF
AN12 through AN15, and AN20 to AN23, are implemented only on 80-pin devices. For 64-pin devices, the
corresponding ANSELx bits are still implemented for these channels, but have no effect.
+ and RA2/AN2/V
ANSEL<23:16>: Analog Port Configuration bits (AN23 through AN16)
0 = Pin configured as a digital port
1 = Pin configured as an analog channel — digital input disabled and any inputs read as ‘ 0 ’
ANSEL22
SS
R/W-1
) or the voltage level on the
(1)
W = Writable bit
‘1’ = Bit is set
ANSEL21
REF
R/W-1
- pins. V
(1)
REF
ANSEL20
R/W-1
+ has
(1)
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
PIC18F87K90 FAMILY
ANSEL19
R/W-1
Each port pin associated with the A/D Converter can be
configured as an analog input or a digital I/O. The
ADRESH and ADRESL registers contain the result of
the A/D conversion. When the A/D conversion is com-
plete, the result is loaded into the ADRESH:ADRESL
register pair, the GO/DONE bit (ADCON0<1>) is
cleared and the A/D Interrupt Flag bit, ADIF (PIR1<6>),
is set.
A device Reset forces all registers to their Reset state.
This forces the A/D module to be turned off and any
conversion in progress is aborted. The value in the
ADRESH:ADRESL register pair is not modified for a
Power-on Reset. These registers will contain unknown
data after a Power-on Reset.
The block diagram of the A/D module is shown in
Figure
23-4.
ANSEL18
R/W-1
x = Bit is unknown
ANSEL17
R/W-1
DS39957D-page 381
ANSEL16
R/W-1
bit 0