PIC16F628-20/P Microchip Technology Inc., PIC16F628-20/P Datasheet - Page 58
PIC16F628-20/P
Manufacturer Part Number
PIC16F628-20/P
Description
18 PIN, 3.5 KB FLASH, 224 RAM, 16 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F628-20P.pdf
(170 pages)
Specifications of PIC16F628-20/P
Comparators
2
Cpu Speed
5 MIPS
Eeprom Memory
128 Bytes
Input Output
16
Interface
SCI/USART
Memory Type
Flash
Number Of Bits
8
Package Type
18-pin PDIP
Programmable Memory
3.5K Bytes
Ram Size
224 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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PIC16F62X
9.5
The comparator outputs are read through the CMCON
register. These bits are read only. The comparator
outputs may also be directly output to the RA3 and RA4
I/O pins. When the CM<2:0> = 110, multiplexors in the
output path of the RA3 and RA4/T0CK1 pins will switch
and the output of each pin will be the unsynchronized
output of the comparator. The uncertainty of each of the
comparators is related to the input offset voltage and
the response time given in the specifications. Figure 9-
3 shows the comparator output block diagram.
The TRISA bits will still function as an output enable/
disable for the RA3 and RA4/T0CK1 pins while in this
mode.
FIGURE 9-3:
DS40300C-page 56
To RA3 or RA4/T0CK1 pin
Note 1: When reading the PORT register, all pins
Comparator Outputs
2: Analog levels on any pin that is defined as
CMCON<7:6>
configured as analog inputs will read as a
‘0’. Pins configured as digital inputs will
convert an analog input according to the
Schmitt Trigger input specification.
RD CMCON
Set CMIF bit
a digital input may cause the input buffer
to consume more current than is
specified.
To Data Bus
CnI
NV
COMPARATOR OUTPUT BLOCK DIAGRAM
From other Comparator
Preliminary
Q
Q
EN
D
CL
EN
D
RESET
2003 Microchip Technology Inc.
Q1
CnV
OUT
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