PIC16F916T-I/SS Microchip Technology, PIC16F916T-I/SS Datasheet - Page 185

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PIC16F916T-I/SS

Manufacturer Part Number
PIC16F916T-I/SS
Description
IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,SSOP,28PIN,PLASTIC
Manufacturer
Microchip Technology
Series
PIC® 16Fr

Specifications of PIC16F916T-I/SS

Rohs Compliant
YES
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
24
Program Memory Size
14KB (8K x 14)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
352 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 5x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
MA160011 - DAUGHTER BOARD PICDEM LCD 16F91X
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PIC16F916T-I/SS
Manufacturer:
MICROCHIP
Quantity:
12 000
Part Number:
PIC16F916T-I/SS
0
12.3
For the ADC to meet its specified accuracy, the charge
holding capacitor (C
charge to the input channel voltage level. The Analog
Input model is shown in Figure 12-4. The source
impedance (R
impedance directly affect the time required to charge the
capacitor C
varies over the device voltage (V
The maximum recommended impedance for analog
sources is 10 kΩ. As the source impedance is
decreased, the acquisition time may be decreased.
After the analog input channel is selected (or changed),
EQUATION 12-1:
© 2007 Microchip Technology Inc.
The value for T
Solving for T
Therefore:
Note 1: The reference voltage (V
Assumptions:
V
V
V
Note: Where n = number of bits of the ADC.
2: The charge holding capacitor (C
3: The maximum recommended impedance for analog sources is 10 kΩ. This is required to meet the pin
A/D Acquisition Requirements
AP P LI ED
AP P LI ED
AP P LI ED
HOLD
leakage specification.
T
S
ACQ
T
) and the internal sampling switch (R
T
C
. The sampling switch (R
ACQ
:
C
C
Temperature
can be approximated with the following equations:
=
=
=
=
=
1
1 e
1 e
HOLD
=
=
=
ACQUISITION TIME EXAMPLE
4.67μ
1.37
C
10pF 1k
Amplifier Settling Time
T
2μs
--------------------------
(
S
) must be allowed to fully
AMP
HOLD
2
--------- -
-------- -
RC
RC
+
μs
T
Tc
n
S
+
C
1.37μ
+
(
+
1
T
(
1
R
C
DD
) 1
=
Ω
T
=
IC
+
C
=
S
), see Figure 12-4.
+
V
V
+
[
+
+
REF
(
7k
A PP LIE D
CHOLD
50°C and external impedance of 10k
Temperature - 25°C
T
R
[
SS
(
Ω
) has no effect on the equation, since it cancels itself out.
COFF
SS
50°C- 25°C
=
) impedance
+
+
HOLD
V
10k
R
PIC16F913/914/916/917/946
CHOLD
S
) ln(1/2047)
+
1
Ω
) is not discharged after each conversion.
SS
Hold Capacitor Charging Time
)
ln(0.0004885)
) 0.05μ
)
--------------------------
(
(
2
n
+
) 0.05μs/°C
1
1
(
S
) 1
/°C
an A/D acquisition must be done before the conversion
can be started. To calculate the minimum acquisition
time, Equation 12-1 may be used. This equation
assumes that 1/2 LSb error is used (1024 steps for the
ADC). The 1/2 LSb error is the maximum error allowed
for the ADC to meet its specified resolution.
)
]
;[1] V
;[2] V
;combining [1] and [2]
)
]
Ω
CHOLD
CHOLD
5.0V V
+
charged to within 1/2 lsb
charge response to V
DD
Temperature Coefficient
DS41250F-page 183
APPLIED

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