PIC12C672-10/SM Microchip Technology, PIC12C672-10/SM Datasheet - Page 444

• Manufacturer Part Number: PIC12C672-10/SM
• Description: IC MCU OTP 2KX14 A/D 8-SOIJ
• Manufacturer: Microchip Technology
• Series: PIC® 12Cr

Specifications of PIC12C672-10/SM

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 10MHz
• Peripherals: POR, WDT
• Number Of I /o: 5
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: OTP
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 4x8b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
• For Use With: XLT08SO-1 - SOCKET TRANSITION 8SOIC 150/208AC164312 - MODULE SKT FOR PM3 16SOICISPICR1 - ADAPTER IN-CIRCUIT PROGRAMMING309-1048 - ADAPTER 8-SOIC TO 8-DIP309-1047 - ADAPTER 8-SOIC TO 8-DIPAC124001 - MODULE SKT PROMATEII 8DIP/SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -
• Other names: PIC12C672-10/SMR; PIC12C672-10/SMR

PICmicro MID-RANGE MCU FAMILY
24.1
DS31024A-page 24-2
AN15
AN14
AN13
AN12
AN11
(SLPCON<0>)
AN7
AN6
AN5
AN4
AN3
AN2
AN1
AN0
Note 3
ADOFF
Bandgap Ref.
OSC1
Oscillator
AN0
Internal
SREFLO
CDAC
Introduction
SREFHI
C
(Configuration Bit)
~2.5uA~5uA~10uA~20uA
FOSC
0
1
The components required to create a Slope A/D converter include:
• Precision comparator
• 4-bit programmable current source
• 16-channel analog MUX
• 16-bit timer with capture register
This section will discuss using these components for a Slope A/D.
Each analog input channel is multiplexed to a single analog input source to be converted by
means of a slope conversion method (using a single precision comparator). The programmable
current source feeds an external capacitor to generate the ramp voltage used in the conversion.
Figure 24-1: Slope A/D Block Diagram
ADCON0<7:4>
~100
14
12
11
15
13
10
9
8
7
6
5
4
3
2
1
0
ADCON1<7:4>
4-Bit Current DAC (Note 1)
(ADCON0<2>)
Analog
MUX
~ 1 k
4
AMUXOE
ADRST (ADCON0<1>)
ADOFF
ADRST
Note 2
ADOFF
Slope A/D
Capture Interrupt (ADCIF)
Clock
Logic
Stop
Slope A/D Capture
Note 1: All current sources are disabled if ADRST = ‘1’
ADTMRH
ADCAPH
2: Approximately 3.5 microsecond time constant
3: Dependent on A/D resolution and input voltage
range (see
ADTMRL
ADCAPL
Table
24-2)
Overflow
1997 Microchip Technology Inc.
Timer
Internal
Data
Bus