PIC16F870T-I/SS Microchip Technology, PIC16F870T-I/SS Datasheet - Page 196

• Manufacturer Part Number: PIC16F870T-I/SS
• Description: IC MCU FLASH 2KX14 EE 28SSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F870T-I/SS

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 64 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SSOP
• For Use With: I3-DB16F871 - BOARD DAUGHTER ICEPIC3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PICmicro MID-RANGE MCU FAMILY
13.1
DS31013A-page 13-2
Introduction
Timer2 is an 8-bit timer with a prescaler, a postscaler, and a period register. Using the prescaler
and postscaler at their maximum settings, the overflow time is the same as a 16-bit timer.
Timer2 is the PWM time-base when the CCP module(s) is used in the PWM mode.
Figure 13-1
the TMR2 register matched the PR2 register. This can be useful in reducing the overhead of the
interrupt service routine on the CPU performance.
Figure 13-1: Timer2 Block Diagram
Note:
F
OSC
shows a block diagram of Timer2. The postscaler counts the number of times that
TMR2 register output can be software selected by the SSP Module as a baud clock.
/4
T2CKPS1:T2CKPS0
1:1, 1:4, 1:16
Prescaler
2
Comparator
TMR2 reg
PR2 reg
EQ
Reset
TOUTPS3:TOUTPS0
TMR2
output
1:1
Postscaler
to
(1)
1997 Microchip Technology Inc.
1:16
4
Sets flag
bit TMR2IF