PIC12F683-I/MD Microchip Technology Inc., PIC12F683-I/MD Datasheet - Page 59
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PIC12F683-I/MD
Manufacturer Part Number
PIC12F683-I/MD
Description
8 PIN, 3.5KB FLASH, 128 RAM, 6 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC12F683-IMD.pdf
(148 pages)
Specifications of PIC12F683-I/MD
A/d Inputs
4-Channel, 10-Bit
Comparators
1
Cpu Speed
5 MIPS
Eeprom Memory
256 Bytes
Frequency
20 MHz
Input Output
6
Memory Type
Flash
Number Of Bits
8
Package Type
8-Pin PDIP
Programmable Memory
3.5K Bytes
Ram Size
128 Bytes
Serial Interface
None
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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9.1.5
The A/D conversion is initiated by setting the
GO/DONE bit (ADCON0<1>). When the conversion is
complete, the A/D module:
• Clears the GO/DONE bit
• Sets the ADIF flag (PIR1<6>)
• Generates an interrupt (if enabled)
If the conversion must be aborted, the GO/DONE bit
can be cleared in software. The ADRESH:ADRESL
registers will not be updated with the partially complete
FIGURE 9-2:
9.1.6
The A/D conversion can be supplied in two formats: left
or right shifted. The ADFM bit (ADCON0<7>) controls
the output format. Figure 9-3 shows the output formats.
FIGURE 9-3:
2004 Microchip Technology Inc.
(ADFM = 0)
(ADFM = 1)
STARTING A CONVERSION
CONVERSION OUTPUT
T
CY
Set GO bit
Holding Capacitor is Disconnected from Analog Input (typically 100 ns)
to T
AD
Conversion Starts
A/D CONVERSION T
10-BIT A/D RESULT FORMAT
MSB
bit 7
bit 7
T
AD
Unimplemented: Read as ‘0’
1
T
AD
b9
2
T
AD
b8
ADRESH
3
T
10-bit A/D Result
AD
b7
AD
4
CYCLES
T
Preliminary
AD
b6
5
MSB
T
AD
b5
6
bit 0
bit 0
A/D
ADRESH:ADRESL registers will retain the value of the
previous conversion. After an aborted conversion, a
2 T
be initiated. Following the delay, an input acquisition is
automatically started on the selected channel.
ADRESH and ADRESL registers are Loaded,
GO bit is Cleared,
ADIF bit is Set,
Holding Capacitor is Connected to Analog Input
T
AD
b4
Note:
AD
7
delay is required before another acquisition can
T
AD
b3
bit 7
bit 7
conversion
8
The GO/DONE bit should not be set in the
same instruction that turns on the A/D.
10-bit A/D Result
LSB
T
AD
b2
9
T
AD
b1
Unimplemented: Read as ‘0’
10 T
sample.
ADRESL
PIC12F683
AD
b0
11
DS41211B-page 57
Instead,
bit 0
LSB
bit 0
the
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