PIC16F785-I/ML Microchip Technology, PIC16F785-I/ML Datasheet - Page 6

• Manufacturer Part Number: PIC16F785-I/ML
• Description: IC PIC MCU FLASH 2KX14 20QFN
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F785-I/ML

• Core Size: 8-Bit
• Program Memory Size: 3.5KB (2K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 17
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 14x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
• Controller Family/series: PIC16F
• No. Of I/o's: 18
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 128Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164322 - MODULE SOCKET MPLAB PM3 28/44QFN
• Connectivity: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PIC16F785/HV785
2. Module: A/D Converter
EQUATION 12-1:
DS80234E-page 6
Corrections to Equation 12-1.
The value for Tc can be approximated with the following equations:
Solving for Tc:
Therefore:
Assumptions:
V
V
V
T
Tacq
AP P LIED
T
A PP LIED
ACQ
A PP LIE D
c
=
=
=
=
=
=
=
=
Temperature
–
–
ACQUISITION TIME EXAMPLE
1.64
12pF 1k
⎛
⎝
C
5µs
Amplifier Settling Time
7.89
T
5µs
⎛
⎜
⎝
⎛
⎜
⎝
1
AMP
HOLD
1 e
1 e
µs
–
+
–
+
–
µs
(
----------- -
2047
1.64µs
+
Tc
(
1
Ric
–
--------- -
–
-------- -
RC
RC
Ω
Tc
T
Tc
+
C
+
⎞
⎠
⎞
⎟
⎠
⎞
⎟
⎠
+
+
[
(
7k
=
+
Temperature - 25°C
T
Rss
=
=
=
COFF
Ω
[
(
50°C and external impedance of 10k
V
V
V
50°C- 25°C
+
+
C HOLD
CHOLD
AP P LI ED
10k
Rs
) ln(1/2047)
+
Ω
)
Hold Capacitor Charging Time
ln(0.0004885)
⎛
⎝
) 0.05µs/°C
1
(
–
) 0.05µs/°C
----------- -
2047
(
1
⎞
⎠
)
]
;[2] Vchold charge response to Vapplied
;Combining [1] and [2]
;[1] Vchold charged to within 1/2 lsb
)
]
Ω
5.0V V
+
Temperature Coefficient
© 2009 Microchip Technology Inc.
DD