PIC16F877-20/P Microchip Technology, PIC16F877-20/P Datasheet - Page 58

• Manufacturer Part Number: PIC16F877-20/P
• Description: IC MCU FLASH 8KX14 EE 40DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F877-20/P

• Core Size: 8-Bit
• Program Memory Size: 14KB (8K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Controller Family/series: PIC16F
• No. Of I/o's: 33
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 368Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 444-1001 - DEMO BOARD FOR PICMICRO MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PIC16F87X
7.1
The prescaler and postscaler counters are cleared
when any of the following occurs:
• a write to the TMR2 register
• a write to the T2CON register
• any device RESET (POR, MCLR Reset, WDT
TMR2 is not cleared when T2CON is written.
TABLE 7-1:
DS30292C-page 56
0Bh,8Bh,
10Bh,18Bh
0Ch
8Ch
11h
12h
92h
Legend:
Note 1: Bits PSPIE and PSPIF are reserved on the PIC16F873/876; always maintain these bits clear.
Address
Reset, or BOR)
Timer2 Prescaler and Postscaler
x = unknown, u = unchanged, - = unimplemented, read as '0'. Shaded cells are not used by the Timer2 module.
INTCON
PIR1
PIE1
TMR2
T2CON
PR2
Name
REGISTERS ASSOCIATED WITH TIMER2 AS A TIMER/COUNTER
Timer2 Module’s Register
Timer2 Period Register
PSPIF
PSPIE
Bit 7
GIE
—
(1)
(1)
TOUTPS3
PEIE
ADIF
ADIE
Bit 6
TOUTPS2 TOUTPS1 TOUTPS0 TMR2ON T2CKPS1 T2CKPS0 -000 0000 -000 0000
RCIF
RCIE
Bit 5
T0IE
INTE
Bit 4
TXIF
TXIE
SSPIE
SSPIF
RBIE
Bit 3
7.2
The output of TMR2 (before the postscaler) is fed to the
SSP module, which optionally uses it to generate shift
clock.
CCP1IF
CCP1IE
Bit 2
T0IF
Output of TMR2
TMR2IE
TMR2IF
INTF
Bit 1
TMR1IF
TMR1IE
2001 Microchip Technology Inc.
RBIF
Bit 0
0000 000x 0000 000u
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
1111 1111 1111 1111
Value on:
POR,
BOR
Value on
RESETS
all other