PIC16F721-I/ML Microchip Technology, PIC16F721-I/ML Datasheet - Page 22
![MCU PIC 4K FLASH 20-QFN](/photos/19/6/190618/4696113_sml.jpg)
PIC16F721-I/ML
Manufacturer Part Number
PIC16F721-I/ML
Description
MCU PIC 4K FLASH 20-QFN
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/ML
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-VFQFN Exposed Pad
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: 22 of 244
- Download datasheet (3Mb)
PIC16F/LF720/721
2.2.2.2
The OPTION register, shown in
readable and writable register, which contains various
control bits to configure:
• Software programmable prescaler for the Timer0/
• External RA2/INT interrupt
• Timer0
• Weak pull-ups on PORTA or PORTB
REGISTER 2-2:
DS41430A-page 22
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2-0
WDT
RABPU
R/W-1
OPTION register
RABPU: PORTA or PORTB Pull-up Enable bit
1 = PORTA or PORTB pull-ups are disabled
0 = PORTA or PORTB pull-ups are enabled by individual bits in the WPUB register
INTEDG: Interrupt Edge Select bit
1 = Interrupt on rising edge of RA2/INT pin
0 = Interrupt on falling edge of RA2/INT pin
T0CS: Timer0 Clock Source Select bit
1 = Transition on RA2/T0CKI pin
0 = Internal instruction cycle clock (F
T0SE: Timer0 Source Edge Select bit
1 = Increment on high-to-low transition on RA2/T0CKI pin
0 = Increment on low-to-high transition on RA2/T0CKI pin
PSA: Prescaler Assignment bit
1 = Prescaler is assigned to the WDT
0 = Prescaler is assigned to the Timer0 module
PS<2:0>: Prescaler Rate Select bits
INTEDG
R/W-1
OPTION_REG: OPTION REGISTER
Bit Value
000
001
010
011
100
101
110
111
W = Writable bit
‘1’ = Bit is set
R/W-1
T0CS
Register
Timer0 Rate
1 : 2
1 : 4
1 : 8
1 : 16
1 : 32
1 : 64
1 : 128
1 : 256
2-2, is a
R/W-1
T0SE
WDT Rate
1 : 1
1 : 2
1 : 4
1 : 8
1 : 16
1 : 32
1 : 64
1 : 128
OSC
/4)
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-1
PSA
Note:
To achieve a 1:1 prescaler assignment for
Timer0, assign the prescaler to the WDT
by setting the PSA bit of the OPTION
register to ‘1’. Refer to
“Software Programmable
R/W-1
PS2
2010 Microchip Technology Inc.
x = Bit is unknown
R/W-1
PS1
Section 12.1.3
Prescaler”.
R/W-1
PS0
bit 0
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