PIC16F876AT-I/SO Microchip Technology, PIC16F876AT-I/SO Datasheet - Page 130

• Manufacturer Part Number: PIC16F876AT-I/SO
• Description: IC MCU CMOS 20MHZ 8K FLSH 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F876AT-I/SO

• Core Size: 8-Bit
• Program Memory Size: 14KB (8K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Controller Family/series: PIC16F
• No. Of I/o's: 22
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 368Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC16F87XA
REGISTER 11-2:
DS39582B-page 128
bit 7
bit 6
bit 5-4
bit 3-0
ADFM: A/D Result Format Select bit
1 = Right justified. Six (6) Most Significant bits of ADRESH are read as ‘0’.
0 = Left justified. Six (6) Least Significant bits of ADRESL are read as ‘0’.
ADCS2: A/D Conversion Clock Select bit (ADCON1 bits in shaded area and in bold)
Unimplemented: Read as ‘0’
PCFG3:PCFG0: A/D Port Configuration Control bits
Legend:
R = Readable bit
- n = Value at POR
ADCON1 REGISTER (ADDRESS 9Fh)
A = Analog input
C/R = # of analog input channels/# of A/D voltage references
bit 7
PCFG
<ADCS2>
<3:0>
ADCON1
0000
0001
0010
0011
0100
0101
011x
1000
1001
1010
1011
1100
1101
1110
1111
Note:
R/W-0
ADFM
0
0
0
0
1
1
1
1
AN7
On any device Reset, the port pins that are multiplexed with analog functions (ANx)
are forced to be an analog input.
D
D
D
D
D
D
D
D
D
D
D
D
A
A
A
<ADCS1:ADCS0>
ADCS2
R/W-0
AN6
ADCON0
D
D
D
D
D
D
D
D
D
D
D
D
A
A
A
D = Digital I/O
00
01
10
11
00
01
10
11
AN5
A
A
D
D
D
D
D
A
A
A
A
D
D
D
D
U-0
—
W = Writable bit
‘1’ = Bit is set
AN4
A
A
A
A
D
D
D
A
A
A
A
A
D
D
D
F
F
F
F
F
F
F
F
OSC
OSC
OSC
RC
OSC
OSC
OSC
RC
(clock derived from the internal A/D RC oscillator)
(clock derived from the internal A/D RC oscillator)
/2
/8
/32
/4
/16
/64
V
V
V
V
V
V
V
V
V
U-0
AN3
—
REF
REF
REF
REF
REF
REF
REF
REF
REF
D
D
A
A
A
A
+
+
+
+
+
+
+
+
+
V
V
V
V
V
AN2
PCFG3
REF
REF
REF
REF
REF
R/W-0
D
D
D
D
A
A
A
A
A
A
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
-
-
-
-
-
Clock Conversion
AN1
A
A
A
A
A
A
D
A
A
A
A
A
A
D
D
PCFG2
R/W-0
AN0
 2003 Microchip Technology Inc.
A
A
A
A
A
A
D
A
A
A
A
A
A
A
A
V
AN3
AN3
AN3
AN3
AN3
AN3
AN3
AN3
AN3
V
V
V
V
V
REF
x = Bit is unknown
—
PCFG1
DD
DD
DD
DD
DD
R/W-0
+
V
AN2
AN2
AN2
AN2
AN2
V
V
V
V
V
V
V
V
V
REF
—
SS
SS
SS
SS
SS
SS
SS
SS
SS
-
PCFG0
R/W-0
C/R
8/0
7/1
5/0
4/1
3/0
2/1
0/0
6/2
6/0
5/1
4/2
3/2
2/2
1/0
1/2
bit 0