PIC16F946T-I/PT Microchip Technology, PIC16F946T-I/PT Datasheet - Page 93

• 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

6.8
TMR1H and TMR1L registers are not reset to 00h on a
POR, or any other Reset, except by the CCP1 and
CCP2 special event triggers.
T1CON register is reset to 00h on a Power-on Reset,
or a Brown-out Reset, which shuts off the timer and
leaves a 1:1 prescale. In all other Resets, the register
is unaffected.
6.9
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:
• Timer1 must be on (T1CON<0>)
• TMR1IE bit (PIE1<0>) must be set
• PEIE bit (INTCON<6>) must be set
The device will wake-up on an overflow. If the GIE bit
(INTCON<7>) is set, the device will wake-up and jump
to the Interrupt Service Routine (0004h) on an overflow.
If the GIE bit is clear, execution will continue with the
next instruction.
TABLE 6-1:
© 2005 Microchip Technology Inc.
0Bh/
8Bh
0Ch
0Eh
0Fh
10h
97h
8Ch
Legend: x = unknown, u = unchanged, – = unimplemented, read as ‘0’. Shaded cells are not used by the Timer1 module.
Addr
INTCON
PIR1
TMR1L
TMR1H
T1CON
CMCON1
PIE1
Resetting of Timer1 Register Pair
(TMR1H, TMR1L)
Timer1 Operation During Sleep
Name
Holding Register for the Least Significant Byte of the 16-bit TMR1 Register
Holding Register for the Most Significant Byte of the 16-bit TMR1 Register
T1GINV
REGISTERS ASSOCIATED WITH TIMER1
EEIF
EEIE
Bit 7
GIE
—
T1GE
PEIE
ADIF
ADIE
Bit 6
—
T1CKPS1 T1CKPS0 T1OSCEN T1SYNC TMR1CS TMR1ON 0000 0000 uuuu uuuu
RCIF
RCIE
Bit 5
T0IE
—
INTE
Bit 4
TXIF
TXIE
—
Preliminary
SSPIF
SSPIE
RBIE
Bit 3
—
CCP1IF
CCP1IE TMR2IE
Bit 2
T0IF
—
TMR2IF
T1GSS
INTF
Bit 1
C2SYNC ---- --10 ---- --10
TMR1IE 0000 0000 0000 0000
TMR1IF 0000 0000 0000 0000
Bit 0
RBIF
PIC16F946
0000 000x 0000 000x
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
POR, BOR
Value on
DS41265A-page 91
Value on
all other
Resets