PIC16F627A_05 Datasheet, PDF (55/180 Pages) Microchip Technology – Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt 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.
© 2005 Microchip Technology Inc.
DS40044D-page 53