PIC16F747T-EML View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F747T-EML

28/40/44-Pin, 8-Bit CMOS Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

Microchip Technology 

PIC16F7X7

REGISTER 6-1:

bit 7

bit 6

bit 5

bit 4

bit 3

bit 2-0

OPTION_REG: OPTION CONTROL REGISTER (ADDRESS 181h)

R/W-1

R/W-1

R/W-1

R/W-1

R/W-1 R/W-1 R/W-1

RBPU INTEDG T0CS

T0SE

PSA(1)

PS2

PS1

bit 7

R/W-1

PS0

bit 0

RBPU: PORTB Pull-up Enable bit

1 = PORTB pull-ups are disabled

0 = PORTB pull-ups are enabled

INTEDG: Interrupt Edge Select bit

1 = Interrupt on rising edge of RB0/INT pin

0 = Interrupt on falling edge of RB0/INT pin

T0CS: TMR0 Clock Source Select bit

1 = Transition on T0CKI pin

0 = Internal instruction cycle clock (CLKO)

T0SE: TMR0 Source Edge Select bit

1 = Increment on high-to-low transition on T0CKI pin

0 = Increment on low-to-high transition on T0CKI pin

PSA: Prescaler Assignment bit(1)

1 = Prescaler is assigned to the WDT

0 = Prescaler is assigned to the Timer0 module

Note 1: To avoid an unintended device Reset, the instruction sequence shown in the

”PICmicro® Mid-Range MCU Family Reference Manual” (DS33023) must be

executed when changing the prescaler assignment from Timer0 to the WDT. This

sequence must be followed even if the WDT is disabled.

PS<2:0>: Prescaler Rate Select bits

Bit Value

000

001

010

011

100

101

110

111

TMR0 Rate WDT Rate

1:2

1:4

1:8

1 : 16

1 : 32

1 : 64

1 : 128

1 : 256

1:1

1:2

1:4

1:8

1 : 16

1 : 32

1 : 64

1 : 128

Legend:

R = Readable bit

-n = Value at POR

W = Writable bit

‘1’ = Bit is set

U = Unimplemented bit, read as ‘0’

‘0’ = Bit is cleared x = Bit is unknown

 2004 Microchip Technology Inc.

DS30498C-page 75

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