PIC16F887-I/ML Microchip Technology, PIC16F887-I/ML Datasheet - Page 78

• Manufacturer Part Number: PIC16F887-I/ML
• Description: IC PIC MCU FLASH 8KX14 44QFN
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F887-I/ML

• Program Memory Type: FLASH
• Program Memory Size: 14KB (8K x 14)
• Package / Case: 44-QFN
• Mfg Application Notes: Intro to Capacitive Sensing Appl Notes Layout and Physical Design Appl Note
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 35
• Eeprom Size: 256 x 8
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 14x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 368 B
• Interface Type: MSSP/EUSART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 35
• Number Of Timers: 3
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 53273-916
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM164123, DM164120-3, DV164122
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 14-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT44QFN2 - SOCKET TRAN ICE 44QFN/40DIPAC164322 - MODULE SOCKET MPLAB PM3 28/44QFN444-1001 - DEMO BOARD FOR PICMICRO MCU
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC16F882/883/884/886/887
6.0
The Timer1 module is a 16-bit timer/counter with the
following features:
• 16-bit timer/counter register pair (TMR1H:TMR1L)
• Programmable internal or external clock source
• 3-bit prescaler
• Optional LP oscillator
• Synchronous or asynchronous operation
• Timer1 gate (count enable) via comparator or
• Interrupt on overflow
• Wake-up on overflow (external clock,
• Time base for the Capture/Compare function
• Special Event Trigger (with ECCP)
• Comparator output synchronization to Timer1
Figure 6-1 is a block diagram of the Timer1 module.
FIGURE 6-1:
DS41291F-page 76
T1G pin
Asynchronous mode only)
clock
Without CLKOUT
T1OSO/T1CKI
TIMER1 MODULE WITH GATE
CONTROL
T1OSCEN
Note 1:
INTOSC
T1OSI
T1G
Set flag bit
TMR1IF on
Overflow
2:
3:
4:
ST Buffer is low power type when using LP osc, or high speed type when using T1CKI.
Timer1 register increments on rising edge.
Synchronize does not operate while in Sleep.
SYNCC2OUT is synchronized when the C2SYNC bit of the CM2CON1 register is set.
TIMER1 BLOCK DIAGRAM
Oscillator
TMR1H
TMR1
(2)
TMR1L
Internal
F
OSC
Clock
EN
(1)
/4
6.1
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. When used with an external clock source, the
module can be used as either a timer or counter.
6.2
The TMR1CS bit of the T1CON register is used to select
the clock source. When TMR1CS = 0, the clock source
is F
supplied externally.
TMR1CS
F
T1CKI pin
OSC
1
0
To C2 Comparator Module
Timer1 Clock
OSC
/4
/4. When TMR1CS = 1, the clock source is
Timer1 Operation
Clock Source Selection
T1CKPS<1:0>
Clock Source
T1SYNC
Prescaler
1, 2, 4, 8
SYNCC2OUT
TMR1ON
0
1
2
© 2009 Microchip Technology Inc.
TMR1GE
(4)
Synchronized
Synchronize
clock input
T1GSS
1
0
det
(3)
TMR1CS
T1GINV
0
1