PIC16F87-E/SS Microchip Technology, PIC16F87-E/SS Datasheet - Page 408
![IC MCU FLASH 4KX14 EEPROM 20SSOP](/photos/6/58/65895/150-20-ssop_sml.jpg)
PIC16F87-E/SS
Manufacturer Part Number
PIC16F87-E/SS
Description
IC MCU FLASH 4KX14 EEPROM 20SSOP
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F688T-ISL.pdf
(688 pages)
3.PIC16F818-ISO.pdf
(6 pages)
4.PIC16F87-IP.pdf
(228 pages)
5.PIC16F87-IP.pdf
(8 pages)
6.PIC16F87-IP.pdf
(4 pages)
7.PIC16F87-IP.pdf
(8 pages)
8.PIC16F87-IP.pdf
(24 pages)
Specifications of PIC16F87-E/SS
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
16
Program Memory Size
7KB (4K x 14)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
368 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
20-SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
- PIC16F616T-ISL PDF datasheet
- PIC16F688T-ISL PDF datasheet #2
- PIC16F818-ISO PDF datasheet #3
- PIC16F87-IP PDF datasheet #4
- PIC16F87-IP PDF datasheet #5
- PIC16F87-IP PDF datasheet #6
- PIC16F87-IP PDF datasheet #7
- PIC16F87-IP PDF datasheet #8
- Current page: 408 of 688
- Download datasheet (3Mb)
PICmicro MID-RANGE MCU FAMILY
22.3
DS31022A-page 22-6
A/D Acquisition Requirements
For the A/D converter to meet its specified accuracy, the charge holding capacitor (C
be allowed to fully charge to the input channel voltage level. The analog input model is shown in
Figure
directly affect the time required to charge the capacitor C
ance varies over the device voltage (V
impedance for analog sources is 10 k . After the analog input channel is selected (changed)
this acquisition must be done before the conversion can be started.
To calculate the minimum acquisition time,
that 1/2 LSb error is used (512 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 22-1:Acquisition Time
Equation 22-2:A/D Minimum Charging Time
Example 22-1
lation is based on the following system assumptions.
Rs
Conversion Error
V
Temperature
V
Example 22-1:
T
V
or
Tc
T
T
T
T
DD
HOLD
ACQ
ACQ
ACQ
C
ACQ
HOLD
=
22-3. The source impedance (R
=
=
=
=
=
=
=
Amplifier Settling Time +
Holding Capacitor Charging Time +
Temperature Coefficient
T
T
5 s + Tc + [(Temp - 25 C)(0.05 s/ C)]
-C
-51.2 pF (1 k + 7 k + 10 k ) ln(0.0020)
-51.2 pF (18 k ) ln(0.0020)
-0.921 s (-6.2146)
5.724 s
5 s + 5.724 s + [(50 C - 25 C)(0.05 s/ C)]
10.724 s + 1.25 s
11.974 s
(V
-(51.2 pF)(1 k + R
shows the calculation of the minimum required acquisition time T
AMP
AMP
HOLD
REF
Calculating the Minimum Required Acquisition Time
+ T
+ T
- (V
(R
=
=
=
=
C
C
IC
REF
+ T
+ T
+ R
/512)) • (1 - e
COFF
COFF
10 k
1/2 LSb
5V
50 C (system max.)
0V @ time = 0
SS
+ R
SS
Rss = 7 k
+ R
S
) ln(1/512)
S
DD
) and the internal sampling switch (R
S
) ln(1/511)
(-Tc/C
Equation 22-1
), see
HOLD
Figure
(R
IC
HOLD
(see graph in
+ R
22-3. The maximum recommended
may be used. This equation assumes
SS
. The sampling switch (R
+ R
S
))
1997 Microchip Technology Inc.
)
Figure
22-3)
ACQ
SS
) impedance
. This calcu-
HOLD
SS
) imped-
) must
Related parts for PIC16F87-E/SS
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![PIC16F87-I/P](/photos/6/76/67657/18-dip_300mil__tmb.jpg)
Part Number:
Description:
IC MCU FLASH 4KX14 EEPROM 18DIP
Manufacturer:
Microchip Technology
Datasheet:
![PIC16F87-I/SO](/photos/6/76/67656/150-18-soic_tmb.jpg)
Part Number:
Description:
IC MCU FLASH 4KX14 EEPROM 18SOIC
Manufacturer:
Microchip Technology
Datasheet:
![PIC16F87-I/SS](/photos/6/58/65895/150-20-ssop_tmb.jpg)
Part Number:
Description:
IC MCU FLASH 4KX14 EEPROM 20SSOP
Manufacturer:
Microchip Technology
Datasheet:
![PIC16F87-I/ML](/photos/6/81/68120/150-28-qfn_tmb.jpg)
Part Number:
Description:
IC MCU FLASH 4KX14 EEPROM 28QFN
Manufacturer:
Microchip Technology
Datasheet:
![PIC16F87-E/SO](/photos/6/76/67656/150-18-soic_tmb.jpg)
Part Number:
Description:
IC MCU FLASH 4KX14 EEPROM 18SOIC
Manufacturer:
Microchip Technology
Datasheet:
![PIC16F87-E/ML](/photos/6/81/68120/150-28-qfn_tmb.jpg)
Part Number:
Description:
IC MCU FLASH 4KX14 EEPROM 28QFN
Manufacturer:
Microchip Technology
Datasheet:
![PIC16F87-E/P](/images/manufacturer_photos/0/4/439/microchip_technology_tmb.jpg)
Part Number:
Description:
IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,DIP,18PIN,PLASTIC
Manufacturer:
Microchip Technology
Datasheet:
![PIC16F1507-E/ML](/photos/16/3/160361/qfn20_tmb.jpg)
Part Number:
Description:
3.5KB Flash, 128B RAM, 18 I/O, CLC, CWG, DDS, 10-bit ADC 20 QFN 4x4mm TUBE
Manufacturer:
Microchip Technology
Datasheet:
![PIC16F1507-E/P](/photos/16/12/161290/pdip20_tmb.jpg)
Part Number:
Description:
3.5KB Flash, 128B RAM, 18 I/O, CLC, CWG, DDS, 10-bit ADC 20 PDIP .300in TUBE
Manufacturer:
Microchip Technology
Datasheet:
![PIC16F1507-E/SO](/photos/16/12/161297/soic20_tmb.jpg)
Part Number:
Description:
3.5KB Flash, 128B RAM, 18 I/O, CLC, CWG, DDS, 10-bit ADC 20 SOIC .300in TUBE
Manufacturer:
Microchip Technology
Datasheet:
![PIC16F1507-E/SS](/photos/16/12/161299/ssop20_tmb.jpg)
Part Number:
Description:
3.5KB Flash, 128B RAM, 18 I/O, CLC, CWG, DDS, 10-bit ADC 20 SSOP .209in TUBE
Manufacturer:
Microchip Technology
Datasheet:
![PIC16F1507-I/ML](/photos/16/3/160361/qfn20_tmb.jpg)
Part Number:
Description:
3.5KB Flash, 128B RAM, 18 I/O, CLC, CWG, DDS, 10-bit ADC 20 QFN 4x4mm TUBE
Manufacturer:
Microchip Technology
Datasheet:
![PIC16F1507-I/P](/photos/16/12/161290/pdip20_tmb.jpg)
Part Number:
Description:
3.5KB Flash, 128B RAM, 18 I/O, CLC, CWG, DDS, 10-bit ADC 20 PDIP .300in TUBE
Manufacturer:
Microchip Technology
Datasheet:
![PIC16F1507-I/SO](/photos/16/12/161297/soic20_tmb.jpg)
Part Number:
Description:
3.5KB Flash, 128B RAM, 18 I/O, CLC, CWG, DDS, 10-bit ADC 20 SOIC .300in TUBE
Manufacturer:
Microchip Technology
Datasheet:
![PIC16F1507-I/SS](/photos/16/12/161299/ssop20_tmb.jpg)
Part Number:
Description:
3.5KB Flash, 128B RAM, 18 I/O, CLC, CWG, DDS, 10-bit ADC 20 SSOP .209in TUBE
Manufacturer:
Microchip Technology
Datasheet: