PIC18LF452-I/PT Microchip Technology, PIC18LF452-I/PT Datasheet - Page 187
PIC18LF452-I/PT
Manufacturer Part Number
PIC18LF452-I/PT
Description
IC MCU FLASH 16KX16 A/D 44TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18F242-ISO.pdf
(332 pages)
3.PIC18F242-ISO.pdf
(14 pages)
4.PIC18F242-ISO.pdf
(16 pages)
5.PIC18F242-ISO.pdf
(16 pages)
6.PIC18F242-ISO.pdf
(14 pages)
7.PIC18LF242-ISO.pdf
(36 pages)
8.PIC18F452-EP.pdf
(332 pages)
Specifications of PIC18LF452-I/PT
Program Memory Type
FLASH
Program Memory Size
32KB (16K x 16)
Package / Case
44-TQFP, 44-VQFP
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
34
Eeprom Size
256 x 8
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC18LF
Core
PIC
Data Bus Width
8 bit
Data Ram Size
1.5 KB
Interface Type
MSSP/SPI/I2C/PSP/USART
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
34
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, ICE4000, DV164136, DM163022
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 10-bit
Data Rom Size
256 B
Height
1 mm
Length
10 mm
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2 V
Width
10 mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
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Quantity
Price
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Manufacturer:
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Quantity:
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Company:
Part Number:
PIC18LF452-I/PT
Manufacturer:
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Quantity:
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Part Number:
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Manufacturer:
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Quantity:
20 000
- PIC16F616T-ISL PDF datasheet
- PIC18F242-ISO PDF datasheet #2
- PIC18F242-ISO PDF datasheet #3
- PIC18F242-ISO PDF datasheet #4
- PIC18F242-ISO PDF datasheet #5
- PIC18F242-ISO PDF datasheet #6
- PIC18LF242-ISO PDF datasheet #7
- PIC18F452-EP PDF datasheet #8
- Current page: 187 of 332
- Download datasheet (6Mb)
To
Equation 17-1 may be used. This equation assumes
that 1/2 LSb error is used (1024 steps for the A/D). The
1/2 LSb error is the maximum error allowed for the A/D
to meet its specified resolution.
EQUATION 17-1:
EQUATION 17-2:
Example 17-1 shows the calculation of the minimum
required acquisition time, T
based on the following application system assump-
tions:
• C
• Rs
• Conversion Error
• V
• Temperature
• V
EXAMPLE 17-1:
T
V
or
T
T
Temperature coefficient is only required for temperatures > 25 C.
T
T
T
ACQ
C
ACQ
ACQ
C
ACQ
2002 Microchip Technology Inc.
HOLD
DD
HOLD
HOLD
calculate
=
=
=
=
=
=
=
=
T
2 s + T
-C
-120 pF (1 k + 7 k + 2.5 k ) ln(0.0004883)
-120 pF (10.5 k ) ln(0.0004883)
-1.26 s (-7.6246)
9.61 s
2 s + 9.61 s + [(50 C – 25 C)(0.05 s/ C)]
11.61 s + 1.25 s
12.86 s
AMP
Amplifier Settling Time + Holding Capacitor Charging Time + Temperature Coefficient
(V
-(120 pF)(1 k + R
T
HOLD
AMP
REF
the
+ T
+ T
C
– (V
(R
C
=
=
=
=
=
+ [(Temp – 25 C)(0.05 s/ C)]
IC
ACQUISITION TIME
C
A/D MINIMUM CHARGING TIME
CALCULATING THE MINIMUM REQUIRED ACQUISITION TIME
+ T
minimum
REF
+ T
+ R
COFF
120 pF
2.5 k
1/2 LSb
5V
50 C (system max.)
0V @ time = 0
/2048)) • (1 – e
COFF
SS
ACQ
+ R
SS
Rss = 7 k
. This calculation is
S
+ R
) ln(1/2048)
acquisition
S
) ln(1/2048)
(-Tc/C
HOLD
time,
(R
IC
+ R
SS
+ R
S
))
)
PIC18FXX2
DS39564B-page 185
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