PIC16F1827-I/ML Microchip Technology Inc., PIC16F1827-I/ML Datasheet - Page 181
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PIC16F1827-I/ML
Manufacturer Part Number
PIC16F1827-I/ML
Description
28 QFN 6x6mm TUBE, 7 KB Flash, 384 bytes RAM, 32 MHz Int. Osc, 16 I/0, Enhanced
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F1826-ISO.pdf
(406 pages)
Specifications of PIC16F1827-I/ML
A/d Inputs
12-Channel, 10-Bit
Comparators
2
Cpu Speed
8 MIPS
Eeprom Memory
256 Bytes
Input Output
16
Interface
CAN/I2C/SPI/UART/USART
Memory Type
Flash
Number Of Bits
8
Package Type
18-pin QFN
Programmable Memory
7K Bytes
Ram Size
384 Bytes
Speed
32 MHz
Timers
4-8-bit, 1-16-bit
Voltage, Range
1.8-5.5 V
Standby Current (pic16lf182x)
30 nA @ 1.8 V, Typical
Lead Free Status / Rohs Status
RoHS Compliant part
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21.7
The Timer1 register pair (TMR1H:TMR1L) increments
to FFFFh and rolls over to 0000h. When Timer1 rolls
over, the Timer1 interrupt flag bit of the PIR1 register is
set. To enable the interrupt on rollover, you must set
these bits:
• TMR1ON bit of the T1CON register
• TMR1IE bit of the PIE1 register
• PEIE bit of the INTCON register
• GIE bit of the INTCON register
The interrupt is cleared by clearing the TMR1IF bit in
the Interrupt Service Routine.
21.8
Timer1 can only operate during Sleep when setup in
Asynchronous Counter mode. In this mode, an external
crystal or clock source can be used to increment the
counter. To set up the timer to wake the device:
• TMR1ON bit of the T1CON register must be set
• TMR1IE bit of the PIE1 register must be set
• PEIE bit of the INTCON register must be set
• T1SYNC bit of the T1CON register must be set
• TMR1CS bits of the T1CON register must be
• T1OSCEN bit of the T1CON register must be
The device will wake-up on an overflow and execute
the next instructions. If the GIE bit of the INTCON
register is set, the device will call the Interrupt Service
Routine.
Timer1 oscillator will continue to operate in Sleep
regardless of the T1SYNC bit setting.
FIGURE 21-2:
2011 Microchip Technology Inc.
Note:
configured
configured
Note 1: Arrows indicate counter increments.
T1CKI = 1
when TMR1
Enabled
T1CKI = 0
when TMR1
Enabled
2: In Counter mode, a falling edge must be registered by the counter prior to the first incrementing rising edge of the clock.
Timer1 Interrupt
Timer1 Operation During Sleep
The TMR1H:TMR1L register pair and the
TMR1IF bit should be cleared before
enabling interrupts.
TIMER1 INCREMENTING EDGE
21.9
The CCP modules use the TMR1H:TMR1L register
pair as the time base when operating in Capture or
Compare mode.
In Capture mode, the value in the TMR1H:TMR1L
register pair is copied into the CCPR1H:CCPR1L
register pair on a configured event.
In Compare mode, an event is triggered when the value
CCPR1H:CCPR1L register pair matches the value in
the TMR1H:TMR1L register pair. This event can be a
Special Event Trigger.
For
“Capture/Compare/PWM
21.10 ECCP/CCP Special Event Trigger
When any of the CCP’s are configured to trigger a spe-
cial event, the trigger will clear the TMR1H:TMR1L reg-
ister pair. This special event does not cause a Timer1
interrupt. The CCP module may still be configured to
generate a CCP interrupt.
In this mode of operation, the CCPR1H:CCPR1L
register pair becomes the period register for Timer1.
Timer1 should be synchronized and F
selected as the clock source in order to utilize the Spe-
cial Event Trigger. Asynchronous operation of Timer1
can cause a Special Event Trigger to be missed.
In the event that a write to TMR1H or TMR1L coincides
with a Special Event Trigger from the CCP, the write will
take precedence.
For more information, see
Event
Trigger”.
more
PIC16(L)F1826/27
ECCP/CCP Capture/Compare Time
Base
information,
Modules”.
Section 16.2.5 “Special
see
DS41391D-page 181
OSC
Section 24.0
/4 should be
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