PIC16F721-I/SO Microchip Technology, PIC16F721-I/SO Datasheet - Page 87
PIC16F721-I/SO
Manufacturer Part Number
PIC16F721-I/SO
Description
MCU PIC 4K FLASH 20-SOIC
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Datasheets
1.PIC16F722-ISS.pdf
(8 pages)
2.PIC16LF720-ISS.pdf
(244 pages)
3.PIC16F720-ISO.pdf
(36 pages)
4.PIC16F720-ISO.pdf
(8 pages)
5.PIC16F721-IML.pdf
(6 pages)
Specifications of PIC16F721-I/SO
Core Size
8-Bit
Program Memory Size
7KB (4K x 14)
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Core Processor
PIC
Speed
16MHz
Connectivity
I²C, SPI, UART/USART
Number Of I /o
17
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 12x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-SOIC (0.300", 7.50mm Width)
Controller Family/series
PIC16F
No. Of I/o's
18
Ram Memory Size
256Byte
Cpu Speed
16MHz
No. Of Timers
3
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- PIC16F722-ISS PDF datasheet
- PIC16LF720-ISS PDF datasheet #2
- PIC16F720-ISO PDF datasheet #3
- PIC16F720-ISO PDF datasheet #4
- PIC16F721-IML PDF datasheet #5
- Current page: 87 of 244
- Download datasheet (3Mb)
10.0
This device contains an internal voltage regulator. To
provide a reference for the regulator, a band gap refer-
ence is provided. This band gap is also user accessible
via an A/D converter channel.
User level band gap functions are controlled by the
FVRCON register, which is shown in
REGISTER 10-1:
TABLE 10-1:
2010 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
q = Value depends on condition
bit 7
bit 6
bit 5
bit 4
bit 3-2
bit 1-0
Note 1:
FVRCON
Legend:
Name
FVRRDY
R-q
2:
3:
FIXED VOLTAGE REFERENCE
FVRRDY is always ‘1’ for the PIC16F720/721 devices.
Fixed Voltage Reference output cannot exceed V
See
x = unknown, u = unchanged, — = unimplemented read as ‘0’, q = value depends on condition. Shaded cells are not
used for ADC module.
FVRRDY
Bit 7
Section 11.0 “Temperature Indicator Module”
FVRRDY
0 = Fixed Voltage Reference output is not active or stable
1 = Fixed Voltage Reference output is ready for use
FVREN
0 = Fixed Voltage Reference is disabled
1 = Fixed Voltage Reference is enabled
TSEN: Temperature Indicator Enable bit
0 = Temperature indicator is disabled
1 = Temperature indicator is enabled
TSRNG: Temperature Indicator Range Selection bit
0 = V
1 = V
Unimplemented: Read as ‘0’
ADFVR<1:0>: A/D Converter Fixed Voltage Reference Selection bits
00 = A/D Converter Fixed Voltage Reference Peripheral output is off
01 = A/D Converter Fixed Voltage Reference Peripheral output is 1x (1.024V)
10 = A/D Converter Fixed Voltage Reference Peripheral output is 2x (2.048V)
11 = A/D Converter Fixed Voltage Reference Peripheral output is 4x (4.096V)
SUMMARY OF ASSOCIATED FIXED VOLTAGE REFERENCE REGISTERS
FVREN
R/W-0
OUT
OUT
FVRCON: FIXED VOLTAGE REFERENCE REGISTER
FVREN
(2)
Bit 6
(1)
: Fixed Voltage Reference Enable bit
= V
= V
: Fixed Voltage Reference Ready Flag bit
DD
DD
W = Writable bit
‘1’ = Bit is set
TSEN
- 4VT (High Range)
- 2VT (Low Range)
Bit 5
R/W-0
TSEN
Register
TSRNG
Bit 4
10-1.
TSRNG
R/W-0
Bit 3
—
(3)
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
DD
.
Bit 2
U-0
—
—
for additional information.
(3)
PIC16F/LF720/721
ADFVR1
Bit 1
U-0
—
ADFVR0 q000 --00 q000 --00
Bit 0
x = Bit is unknown
ADFVR1
R/W-0
POR, BOR
Value on
(2)
(2)
DS41430A-page 87
ADFVR0
Value on
all other
R/W-0
Resets
bit 0
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