PIC12C671-04I/P Microchip Technology Inc., PIC12C671-04I/P Datasheet - Page 45
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PIC12C671-04I/P
Manufacturer Part Number
PIC12C671-04I/P
Description
8 PIN, 1.75 KB OTP, 128 RAM, 6 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC12C671-04IP.pdf
(129 pages)
Specifications of PIC12C671-04I/P
A/d Inputs
4-Channel, 8-Bit
Cpu Speed
2.5 MIPS
Eeprom Memory
0 Bytes
Input Output
5
Memory Type
OTP
Number Of Bits
8
Package Type
8-pin PDIP
Programmable Memory
1.75K Bytes
Ram Size
128 Bytes
Speed
4 MHz
Timers
1-8-bit
Voltage, Range
2.5-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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8.0
The Analog-To-Digital (A/D) converter module has four
analog inputs.
The A/D allows conversion of an analog input signal to
a corresponding 8-bit digital number (refer to Applica-
tion Note AN546 for use of A/D Converter). The output
of the sample and hold is the input into the converter,
which generates the result via successive approxima-
tion. The analog reference voltage is software select-
able to either the device’s positive supply voltage (V
or the voltage level on the GP1/AN1/V
converter has a unique feature of being able to operate
while the device is in SLEEP mode.
The A/D module has three registers. These registers
are:
REGISTER 8-1:
1999 Microchip Technology Inc.
bit7
bit 7-6: ADCS<1:0>: A/D Conversion Clock Select bits
bit 5:
bit 4-3: CHS<1:0>: Analog Channel Select bits
bit 2:
bit 1:
bit 0:
ADCS1 ADCS0 reserved
R/W-0
• A/D Result Register (ADRES)
• A/D Control Register 0 (ADCON0)
• A/D Control Register 1 (ADCON1)
ANALOG-TO-DIGITAL
CONVERTER (A/D) MODULE
00 = F
01 = F
10 = F
11 = F
Reserved
00 = channel 0, (GP0/AN0)
01 = channel 1, (GP1/AN1)
10 = channel 2, (GP2/AN2)
11 = channel 3, (GP4/AN3)
GO/DONE: A/D Conversion Status bit
If ADON = 1
1 = A/D conversion in progress (setting this bit starts the A/D conversion)
0 = A/D conversion not in progress (this bit is automatically cleared by hardware when the A/D conversion
is complete)
Reserved
ADON: A/D on bit
1 = A/D converter module is operating
0 = A/D converter module is shut off and consumes no operating current
R/W-0
OSC
OSC
OSC
RC
(clock derived from an RC oscillation)
/2
/8
/32
ADCON0 REGISTER (ADDRESS 1Fh)
R/W-0
R/W-0
CHS1
REF
pin. The A/D
R/W-0
CHS0
DD
GO/DONE reserved
)
R/W-0
The ADCON0 Register, shown in Figure 8-1, controls
the operation of the A/D module. The ADCON1 Regis-
ter, shown in Figure 8-2, configures the functions of the
port pins. The port pins can be configured as analog
inputs (GP1 can also be a voltage reference) or as dig-
ital I/O.
Note 1: If the port pins are configured as analog
R/W-0
2: Changing ADCON1 Register can cause
inputs (reset condition), reading the port
(MOVF GPIO,W) results in reading '0's.
the GPIF and INTF flags to be set in the
INTCON Register.
should be disabled prior to modifying
ADCON1.
ADON
R/W-0
bit0
PIC12C67X
R = Readable bit
W = Writable bit
U = Unimplemented bit,
- n = Value at POR reset
read as ‘0’
These interrupts
DS30561B-page 45
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