PIC16F690-E/P Microchip Technology Inc., PIC16F690-E/P Datasheet - Page 66
PIC16F690-E/P
Manufacturer Part Number
PIC16F690-E/P
Description
20 PIN, 7 KB FLASH, 256 RAM, 18 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F690-EP.pdf
(294 pages)
Specifications of PIC16F690-E/P
A/d Inputs
12-Channel, 10-Bit
Comparators
2
Cpu Speed
7 MIPS
Eeprom Memory
256 Bytes
Input Output
18
Interface
USART
Memory Type
Flash
Number Of Bits
8
Package Type
20-pin PDIP
Programmable Memory
7K Bytes
Ram Size
256 Bytes
Speed
20 MHz
Timers
2-8-bit, 1-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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PIC16F631/677/685/687/689/690
4.2.5
Each PORTA 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 comparator or the A/D Converter (ADC),
refer to the appropriate section in this data sheet.
FIGURE 4-1:
DS41262C-page 64
PIN DESCRIPTIONS AND
DIAGRAMS
Interrupt-on-Change
Data Bus
WPUDA
WPUDA
PORTA
PORTA
Note 1:
TRISA
TRISA
IOCA
IOCA
WR
RD
WR
WR
WR
RD
RD
RD
BLOCK DIAGRAM OF RA0
2:
D
D
D
D
ANSEL determines Analog Input mode.
Not implemented on PIC16F631.
CK
CK
CK
CK
Q
Q
Q
Q
Q
Q
Q
Q
To A/D Converter
To Comparator
Preliminary
RD PORTA
Input Mode
Analog
(2)
Q
Q
(1)
Input Mode
Analog
EN
EN
4.2.5.1
Figure 4-2 shows the diagram for this pin. The
RA0/AN0/C1IN+/ICSPDAT/ULPWU pin is configurable
to function as one of the following:
• a general purpose I/O
• an analog input for the ADC (except PIC16F631)
• an analog input to Comparator C1
• In-Circuit Serial Programming™ data
• an analog input for the Ultra Low-Power Wake-up
D
D
0
(1)
RABPU
1
Q3
+
-
RA0/AN0/C1IN+/ICSPDAT/ULPWU
ULPWUE
V
Weak
DD
I
ULP
V
SS
© 2006 Microchip Technology Inc.
V
T
V
V
DD
SS
I/O Pin
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