PIC16F737 datasheet(75/280 Pages) MICROCHIP

75 / 280 page

 2003-2013 Microchip Technology Inc.

DS30498D-page 75

PIC16F7X7

OPTION_REG: OPTION CONTROL REGISTER (ADDRESS 181h)

R/W-1

RBPU

INTEDG

T0CS

T0SE

PSA(1)

PS2

PS1

PS0

bit 7

bit 0

bit 7

RBPU: PORTB Pull-up Enable bit

= PORTB pull-ups are disabled

= PORTB pull-ups are enabled

bit 6

INTEDG: Interrupt Edge Select bit

= Interrupt on rising edge of RB0/INT pin

= Interrupt on falling edge of RB0/INT pin

bit 5

T0CS: TMR0 Clock Source Select bit

= Transition on T0CKI pin

= Internal instruction cycle clock (CLKO)

bit 4

T0SE: TMR0 Source Edge Select bit

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

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

bit 3

PSA: Prescaler Assignment bit(1)

= Prescaler is assigned to the WDT

= Prescaler is assigned to the Timer0 module

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

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.

bit 2-0

PS<2:0>: Prescaler Rate Select bits

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

000

001

010

011

100

101

110

111

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

Bit Value

TMR0 Rate WDT Rate

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