PIC16LF1826T-I/SS Microchip Technology, PIC16LF1826T-I/SS Datasheet - Page 180
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PIC16LF1826T-I/SS
Manufacturer Part Number
PIC16LF1826T-I/SS
Description
3.5 KB Flash, 256 Bytes RAM, 32 MHz Int. Osc, 16 I/0, Enhanced Mid Range Core, N
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Specifications of PIC16LF1826T-I/SS
Core Processor
PIC
Core Size
8-Bit
Speed
32MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
16
Program Memory Size
3.5KB (2K x 14)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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PIC16F/LF1826/27
20.1
The Timer1 module is a 16-bit incrementing counter
which is accessed through the TMR1H:TMR1L register
pair. Writes to TMR1H or TMR1L directly update the
counter.
When used with an internal clock source, the module is
a timer and increments on every instruction cycle.
When used with an external clock source, the module
can be used as either a timer or counter and incre-
ments on every selected edge of the external source.
Timer1 is enabled by configuring the TMR1ON and
TMR1GE bits in the T1CON and T1GCON registers,
respectively. Table 20-1 displays the Timer1 enable
selections.
TABLE 20-1:
TABLE 20-2:
DS41391C-page 180
TMR1CS1
TMR1ON
0
0
1
1
0
0
1
1
1
Timer1 Operation
TIMER1 ENABLE
SELECTIONS
CLOCK SOURCE SELECTIONS
TMR1CS0
TMR1GE
0
1
0
1
1
0
1
0
0
Off
Off
Always On
Count Enabled
Operation
T1OSCEN
Timer1
x
x
x
0
1
Preliminary
System Clock (F
Instruction Clock (F
Capacitive Sensing Oscillator
External Clocking on T1CKI Pin
Osc.Circuit On T1OSI/T1OSO Pins
20.2
The TMR1CS<1:0> and T1OSCEN bits of the T1CON
register are used to select the clock source for Timer1.
Table 20-2 displays the clock source selections.
20.2.1
When the internal clock source is selected the
TMR1H:TMR1L register pair will increment on multiples
of F
When the F
Timer1 register value will increment by four counts every
instruction clock cycle. Due to this condition, a 2 LSB
error in resolution will occur when reading the Timer1
value. To utilize the full resolution of Timer1, an
asynchronous input signal must be used to gate the
Timer1 clock input.
The following asynchronous sources may be used:
• Asynchronous event on the T1G pin to Timer1
• C1 or C2 comparator input to Timer1 Gate
20.2.2
When the external clock source is selected, the Timer1
module may work as a timer or a counter.
When enabled to count, Timer1 is incremented on the
rising edge of the external clock input T1CKI or the
capacitive sensing oscillator signal. Either of these
external clock sources can be synchronized to the
microcontroller
asynchronously.
When used as a timer with a clock oscillator, an
external 32.768 kHz crystal can be used in conjunction
with the dedicated internal oscillator circuit.
Gate
Note:
OSC
as determined by the Timer1 prescaler.
OSC
Clock Source Selection
OSC
• Timer1 enabled after POR
• Write to TMR1H or TMR1L
• Timer1 is disabled
• Timer1 is disabled (TMR1ON = 0)
INTERNAL CLOCK SOURCE
EXTERNAL CLOCK SOURCE
In Counter mode, a falling edge must be
registered by the counter prior to the first
incrementing rising edge after any one or
more of the following conditions:
OSC
)
when T1CKI is high then Timer1 is
enabled (TMR1ON=1) when T1CKI is
low.
/4)
Clock Source
internal clock source is selected, the
system
2010 Microchip Technology Inc.
clock
or
they
can
run
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