PIC16F946T-I/PT Microchip Technology, PIC16F946T-I/PT Datasheet - Page 96

• Manufacturer Part Number: PIC16F946T-I/PT
• Description: Microcontroller
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F946T-I/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 14KB (8K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 336 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TFQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MA160011 - DAUGHTER BOARD PICDEM LCD 16F91X
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PIC16F946
7.2
The Timer2 module has an 8-bit period register, PR2.
Timer2 increments from 00h until it matches PR2 and
then resets to 00h on the next increment cycle. PR2 is
a readable and writable register. The PR2 register is
initialized to FFh upon Reset.
FIGURE 7-1:
TABLE 7-1:
DS41265A-page 94
0Bh/
8Bh
0Ch
11h
12h
8Ch
92h
Legend:
Addr
F
OSC
INTCON
PIR1
TMR2
T2CON
PIE1
PR2
Timer2 Interrupt
Name
/4
x = unknown, u = unchanged, – = unimplemented, read as ‘0’. Shaded cells are not used by the Timer2 module.
Note 1: TMR2 register output can be software selected by the SSP module as a baud clock.
Holding Register for the 8-bit TMR2 Register
Timer2 Period Register
REGISTERS ASSOCIATED WITH TIMER2
Bit 7
EEIF
EEIE
GIE
—
TIMER2 BLOCK DIAGRAM
T2CKPS<1:0>
1:1, 1:4, 1:16
TOUTPS3 TOUTPS2 TOUTPS1 TOUTPS0 TMR2ON T2CKPS1 T2CKPS0 -000 0000 -000 0000
Prescaler
ADIE
Bit 6
PEIE
ADIF
2
RCIF
RCIE
Bit 5
T0IE
Comparator
INTE
Bit 4
TXIF
TXIE
TMR2
Preliminary
PR2
SSPIF
SSPIE
RBIE
Bit 3
EQ
7.3
The output of TMR2 (before the postscaler) is fed to the
SSP module, which optionally uses it to generate the
shift clock.
Reset
CCP1IF
CCP1IE
TOUTPS<3:0>
Bit 2
T0IF
Postscaler
1:1 to 1:16
Timer2 Output
Output
TMR2IF
TMR2IE
TMR2
4
Bit 1
INTF
(1)
TMR1IE
TMR1IF
© 2005 Microchip Technology Inc.
RBIF
Bit 0
0000 000x 0000 000x
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
1111 1111 1111 1111
POR, BOR
Value on
bit TMR2IF
Sets Flag
Value on
all other
Resets