PIC16F648AT-E/SO 데이터 시트보기 (PDF) - Microchip Technology

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PIC16F648AT-E/SO

Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

Microchip Technology 

PIC16F627A/628A/648A

REGISTER 8-1: T2CON – TIMER2 CONTROL REGISTER (ADDRESS: 12h)

U-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0 R/W-0 R/W-0

—

TOUTPS3 TOUTPS2 TOUTPS1 TOUTPS0 TMR2ON T2CKPS1 T2CKPS0

bit 7

bit 0

bit 7

bit 6-3

bit 2

bit 1-0

Unimplemented: Read as ‘0’

TOUTPS<3:0>: Timer2 Output Postscale Select bits

0000 = 1:1 Postscale Value

0001 = 1:2 Postscale Value

•

•

•

1111 = 1:16 Postscale

TMR2ON: Timer2 On bit

1 = Timer2 is on

0 = Timer2 is off

T2CKPS<1:0>: Timer2 Clock Prescale Select bits

00 = 1:1 Prescaler Value

01 = 1:4 Prescaler Value

1x = 1:16 Prescaler Value

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

TABLE 8-1: REGISTERS ASSOCIATED WITH TIMER2 AS A TIMER/COUNTER

Address Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Value on

POR

Value on

all other

Resets

0Bh, 8Bh, INTCON GIE

10Bh, 18Bh

PEIE

T0IE

INTE

RBIE

T0IF

INTF

RBIF 0000 000x 0000 000u

0Ch

PIR1

EEIF

CMIF

RCIF

TXIF

—

CCP1IF TMR2IF TMR1IF 0000 -000 0000 -000

8Ch

PIE1

EEIE

CMIE

RCIE

TXIE

—

CCP1IE TMR2IE TMR1IE 0000 -000 0000 -000

11h

TMR2 Timer2 Module’s Register

0000 0000 0000 0000

12h

T2CON

—

TOUTPS3 TOUTPS2 TOUTPS1 TOUTPS0 TMR2ON T2CKPS1 T2CKPS0 -000 0000 -000 0000

92h

PR2

Timer2 Period Register

1111 1111 1111 1111

Legend:

x = unknown, u = unchanged, - = unimplemented read as ‘0’. Shaded cells are not used by the Timer2 module.

© 2007 Microchip Technology Inc.

DS40044F-page 53

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