PIC14000T-04/SO Microchip Technology, PIC14000T-04/SO Datasheet - Page 64
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PIC14000T-04/SO
Manufacturer Part Number
PIC14000T-04/SO
Description
IC MCU OTP 4KX14 A/D 28SOIC
Manufacturer
Microchip Technology
Series
PIC® 14r
Datasheets
1.PIC16LF627A-IP.pdf
(8 pages)
2.PIC16F818-ISO.pdf
(6 pages)
3.PIC14000-04SO.pdf
(153 pages)
4.PIC14000-04SO.pdf
(5 pages)
Specifications of PIC14000T-04/SO
Core Processor
PIC
Core Size
8-Bit
Speed
4MHz
Connectivity
I²C
Peripherals
POR, Temp Sensor, WDT
Number Of I /o
20
Program Memory Size
7KB (4K x 14)
Program Memory Type
OTP
Ram Size
192 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 6 V
Data Converters
Slope A/D
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
28-SOIC (7.5mm Width)
Processor Series
PIC14000
Core
PIC
Data Bus Width
8 bit
Data Ram Size
192 B
Interface Type
SPI, UART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
22
Number Of Timers
1
Operating Supply Voltage
2.7 V to 6 V
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
Development Tools By Supplier
ICE2000
Minimum Operating Temperature
0 C
On-chip Adc
14 bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC14000T-04/SO
Manufacturer:
MICROCHIP
Quantity:
12 000
PIC14000
8.8
The conversion time for the A/D converter on the
PIC14000 can be calculated using the equation:
Where Fosc is the oscillator frequency and N is the
number of bits of resolution desired.
Therefore at 4MHz, the conversion time for 16 bits is
16.384 msec. Conversely, it is 256 sec for 10 bits.
TABLE 8-6:
DS40122B-page 64
Resolution
Conversion Time = (1/Fosc) x 2
Note: Assumes F
(Bits)
A/D
16
14
12
16
14
12
A/D Speed, Resolution and Capacitor
Selection
CDAC CAPACITOR SELECTION (EXAMPLES FOR FULL SCALE OF 3.5V AND 1.5V)
Conversion Time
OSC
(Seconds)
0.016384
0.004096
0.001024
0.016384
0.004096
0.001024
of 4 MHz.
N
Full Scale
(Volts)
3.5
3.5
3.5
1.5
1.5
1.5
Preliminary
Source Output
A/D Current
( amps)
Choosing the correct ramp capacitor for the CDAC pin
is required to achieve the desired resolution, conver-
sion time and full scale input voltage. The equation for
selecting the ramp capacitor value is:
Table 8-6 provides example capacitor values for the
desired A/D resolution, conversion time, and full scale
voltage measurement.
24.75
24.75
24.75
24.75
24.75
24.75
Capacitor = (conversion time in seconds) X
(current source output in amps) / (full scale in volts)
Calculated
Capacitor
1.17E-07
2.93E-08
7.31E-09
2.73E-07
6.83E-08
1.71E-08
(Farads)
CDAC
1996 Microchip Technology Inc.
Nearest Standard
CDAC Capacitor
6800pF
.022uF
0.22 F
Value
68nF
15nF
.1uF