PIC16F687-E/SO Microchip Technology, PIC16F687-E/SO Datasheet - Page 73

• Manufacturer Part Number: PIC16F687-E/SO
• Description: IC PIC MCU FLASH 2KX14 20SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F687-E/SO

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 18
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 20-SOIC (7.5mm Width)
• For Use With: XLT20SO1-1 - SOCKET TRANS ICE 20DIP TO 20SOICAC162061 - HEADER INTRFC MPLAB ICD2 20PINAC164039 - MODULE SKT PROMATE II 20DIP/SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.4.3
Each PORTB pin is multiplexed with other functions. The
pins and their combined functions are briefly described
here. For specific information about individual functions
such as the SSP, I
appropriate section in this data sheet.
© 2008 Microchip Technology Inc.
PIN DESCRIPTIONS AND
DIAGRAMS
2
C™ or interrupts, refer to the
PIC16F631/677/685/687/689/690
4.4.3.1
Figure 4-7 shows the diagram for this pin. The
RB4/AN10/SDI/SDA
as one of the following:
• a general purpose I/O
• an analog input for the ADC (except PIC16F631)
• a SPI data I/O
• an I
FIGURE 4-7:
Data Bus
Note
PORTB
PORTB
WPUB
WPUB
TRISB
TRISB
IOCB
IOCB
Note 1: SDI
Interrupt-on-
WR
WR
WR
WR
RD
RD
RD
RD
Change
Available on PIC16F677/PIC16F687/PIC16F689/PIC16F690
only.
2
C data I/O
1:
2:
D
D
D
D
To SSPSR
To A/D Converter
CK
CK
CK
CK
PIC16F677
16F690 only.
ANSEL determines Analog Input mode.
Not implemented on PIC16F631.
RB4/AN10/SDI/SDA
Q
Q
Q
Q
Q
Q
Q
Q
and
(1)
Input Mode
BLOCK DIAGRAM OF RB4
RD PORTB
Analog
pin is configurable to function
SSPSR
/
PIC16F687/PIC16F689/PIC
(2)
SDA
From
SSP
SSPEN
(1)
RABPU
0
1
1
0
Input Mode
Analog
0
1
1
0
Q
Q
are
EN
EN
DS41262E-page 71
(1)
D
D
available
V
DD
Weak
V
V
Q3
DD
SS
ST
I/O Pin
on