PIC12F615-I/MD Microchip Technology, PIC12F615-I/MD Datasheet - Page 74
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PIC12F615-I/MD
Manufacturer Part Number
PIC12F615-I/MD
Description
IC PIC MCU FLASH 1KX14 8DFN
Manufacturer
Microchip Technology
Series
PIC® 12Fr
Datasheets
1.PIC12F609T-ISN.pdf
(212 pages)
2.PIC12F609T-ISN.pdf
(26 pages)
3.PIC12F609T-ISN.pdf
(8 pages)
4.PIC12F615-ESN.pdf
(168 pages)
Specifications of PIC12F615-I/MD
Core Size
8-Bit
Program Memory Size
1.75KB (1K x 14)
Core Processor
PIC
Speed
20MHz
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
5
Program Memory Type
FLASH
Ram Size
64 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
8-DFN
Controller Family/series
PIC12
No. Of I/o's
6
Ram Memory Size
64Byte
Cpu Speed
20MHz
No. Of Timers
3
Digital Ic Case Style
DFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
APGRD004 - REF DESIGN MOD AUTO AMBNT LIGHTAC162083 - HEADER MPLAB ICD2 PIC16F616 8/14AC164326 - MODULA SKT PM3 20QFNXLT08DFN2 - SOCKET TRANSITION ICE 14DIP/8DFN
Eeprom Size
-
Connectivity
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
- PIC12F609T-ISN PDF datasheet
- PIC12F609T-ISN PDF datasheet #2
- PIC12F609T-ISN PDF datasheet #3
- PIC12F615-ESN PDF datasheet #4
- Current page: 74 of 168
- Download datasheet (3Mb)
PIC12F609/615/12HV609/615
9.3
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 9-4. 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 k . As the source impedance is
decreased, the acquisition time may be decreased.
After the analog input channel is selected (or changed),
EQUATION 9-1:
DS41302A-page 72
Note 1: The reference voltage (V
The value for T
Solving for T
Therefore:
Assumptions:
2: The charge holding capacitor (C
3: The maximum recommended impedance for analog sources is 10 k . This is required to meet the pin
A/D Acquisition Requirements
HOLD
leakage specification.
T
V
S
V
V
ACQ
T
) and the internal sampling switch (R
AP PLIE D
T
. The sampling switch (R
AP P LI ED
ACQ
AP P LIED
C
C
=
=
=
=
:
=
HOLD
C
=
=
=
ACQUISITION TIME EXAMPLE
Temperature
–
–
2µ
4.67µ
can be approximated with the following equations:
1.37
10pF 1k
⎛
⎝
C
Amplifier Settling Time
T
2µs
⎛
⎜
⎝
⎛
⎜
⎝
S
1
) must be allowed to fully
AMP
HOLD
1 e
1 e
+
µs
–
S
+
–
–
1.37µ
----------- -
2047
+
T
1
–
--------- -
R
C
–
-------- -
RC
RC
T
T
DD
Tc
IC
+
C
C
S
+
⎞
⎠
⎞
⎟
⎠
⎞
⎟
⎠
), see Figure 9-4.
+
+
+
REF
7k
=
Temperature - 25°C 0.05µs/°C
T
=
=
=
R
SS
COFF
) has no effect on the equation, since it cancels itself out.
SS
50°C- 25°C 0.05µ
) impedance
50°C and external impedance of 10k
V
V
V
+
+
CHOLD
A P PLIE D
HOLD
CHOLD
10k
R
S
+
) is not discharged after each conversion.
Preliminary
ln(1/2047)
SS
Hold Capacitor Charging Time
ln(0.0004885)
)
⎛
⎝
1
–
----------- -
2047
S
1
/°C
an A/D acquisition must be done before the conversion
can be started. To calculate the minimum acquisition
time, Equation 9-1 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.
⎞
⎠
;[2] V
;combining [1] and [2]
;[1] V
CHOLD
CHOLD
5.0V V
+
charge response to V
charged to within 1/2 lsb
Temperature Coefficient
© 2006 Microchip Technology Inc.
DD
APPLIED
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