PIC12C672T-04E/SM Microchip Technology, PIC12C672T-04E/SM Datasheet - Page 452
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PIC12C672T-04E/SM
Manufacturer Part Number
PIC12C672T-04E/SM
Description
IC MCU OTP 2KX14 A/D 8-SOIJ
Manufacturer
Microchip Technology
Series
PIC® 12Cr
Datasheets
1.PIC16F688T-ISL.pdf
(688 pages)
2.PIC12CE673-10P.pdf
(129 pages)
3.PIC12CE673-10P.pdf
(14 pages)
Specifications of PIC12C672T-04E/SM
Core Processor
PIC
Core Size
8-Bit
Speed
4MHz
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
-40°C ~ 125°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 16SOIC309-1048 - ADAPTER 8-SOIC TO 8-DIP309-1047 - ADAPTER 8-SOIC TO 8-DIP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
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PICmicro MID-RANGE MCU FAMILY
24.3.7
DS31024A-page 24-10
Slope A/D Resolution, Speed, Voltage Range, and Capacitor Selection
The Slope A/D module allows many trade-offs. For a conversion the user needs to make the fol-
lowing Trade-offs:
• The Resolution of the Result
• The Speed of the Conversion
• The Analog Input Voltage Range
• The External Capacitor
The resolution is the number of bits that is used by the ADTMR to represent the measured input
voltage. This resolution affects the time that the conversion can be completed in.
shows the trade-off between the resolution of the conversion and the maximum conversion time.
The conversion time for the Slope A/D converter can be calculated using the equation:
Therefore at 4 MHz, the conversion time for 16 bits is 16.384 msec. Conversely, it is 256 sec for
10-bits.
Table 24-1: ADTMR Initialization Values and Conversion Times
Resolution
Conversion Time = (1/Fosc) x 2
Where Fosc is the oscillator frequency and N is the number of bits of resolution desired.
Bits
.
16
15
14
13
12
11
10
Value Loaded
into ADTMR
C000h
E000h
FC00h
0000h
8000h
F000h
F800h
65536 T
32768 T
16384 T
N
8192 T
4096 T
2048 T
1024 T
Cycles
OSC
OSC
OSC
OSC
OSC
OSC
OSC
Maximum Conversion Time
204.8 s
102.4 s
3.28 ms
1.64 ms
20 MHz
51.2 s
820 s
410 s
1997 Microchip Technology Inc.
16.38 ms
2.05 ms
1.03 ms
8.2 ms
4.1 ms
500 s
250 s
4 MHz
Table 24-1
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