PIC16LF767-I/SS Microchip Technology, PIC16LF767-I/SS Datasheet - Page 188
![IC PIC MCU FLASH 8KX14 28SSOP](/photos/6/81/68119/150-28-ssop_sml.jpg)
PIC16LF767-I/SS
Manufacturer Part Number
PIC16LF767-I/SS
Description
IC PIC MCU FLASH 8KX14 28SSOP
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Specifications of PIC16LF767-I/SS
Core Processor
PIC
Core Size
8-Bit
Speed
10MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
25
Program Memory Size
14KB (8K x 14)
Program Memory Type
FLASH
Ram Size
368 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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PIC16F7X7
15.17 Watchdog Timer (WDT)
For PIC16F7X7 devices, the WDT has been modified
from previous PIC16 devices. The new WDT is code
and functionally backward compatible with previous
PIC16 WDT modules and allows the user to have a
scaler value for the WDT and TMR0 at the same time.
In addition, the WDT time-out value can be extended to
268 seconds, using the prescaler with the postscaler
when the PSA bit is set to ‘1’.
15.17.1
The WDT derives its time base from the 31.25 kHz
INTRC; therefore, the accuracy of the 31.25 kHz will be
the same accuracy for the WDT time-out period.
The value of WDTCON is ‘---0 1000’ on all Resets.
This gives a nominal time base of 16.38 ms which is
compatible with the time base generated with previous
PIC16 microcontroller versions.
FIGURE 15-12:
TABLE 15-5:
DS30498C-page 186
WDTEN = 0
CLRWDT Command
Oscillator Fail Detected
Exit Sleep + System Clock = T1OSC, EXTRC, INTRC, EXTCLK
Exit Sleep + System Clock = XT, HS, LP
Note:
INTRC Clock
31.25 kHz
WDT OSCILLATOR
When the OST is invoked, the WDT is held
in Reset because the WDT ripple counter
is used by the OST to perform the oscilla-
tor delay count. When the OST count has
expired, the WDT will begin counting (if
enabled).
PRESCALER/POSTSCALER BIT STATUS
WATCHDOG TIMER BLOCK DIAGRAM
Conditions
16-bit Programmable Prescaler WDT
WDTEN from Configuration Word Register 1
SWDTEN from WDTCON Register
WDTPS<3:0>
From TMR0 Clock Source
Register 1 and when this bit is set, the WDT runs
continuously.
A new prescaler has been added to the path between
the internal RC and the multiplexors used to select the
path for the WDT. This prescaler is 16 bits and can be
programmed to divide the internal RC by 32 to 65536,
giving the time base used for the WDT a nominal range
of 1 ms to 2.097s.
15.17.2
The WDTEN bit is located in Configuration Word
The SWDTEN bit is in the WDTCON register. When the
WDTEN bit in the Configuration Word Register 1 is set,
the SWDTEN bit has no effect. If WDTEN is clear, then
the SWDTEN bit can be used to enable and disable the
WDT. Setting the bit will enable it and clearing the bit
will disable it.
The PSA and PS<2:0> bits (OPTION_REG) have the
same function as in previous versions of the PIC16
family of microcontrollers.
Cleared at end of OST
0
1
Prescaler
WDT CONTROL
Cleared
PSA
WDT Time-out
2004 Microchip Technology Inc.
0
Postscaler
Cleared at end of OST
Postscaler (PSA = 1)
1
8
Cleared
PSA
PS<2:0>
To TMR0
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