Datasheet

© 2009 Microchip Technology Inc. DS40044G-page 55
PIC16F627A/628A/648A
REGISTER 8-1: T2CON – TIMER2 CONTROL REGISTER (ADDRESS: 12h)
TABLE 8-1: REGISTERS ASSOCIATED WITH TIMER2 AS A TIMER/COUNTER
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 Unimplemented: Read as ‘0’
bit 6-3 TOUTPS<3:0>: Timer2 Output Postscale Select bits
0000 = 1:1 Postscale Value
0001 = 1:2 Postscale Value
•
•
•
1111 = 1:16 Postscale
bit 2 TMR2ON: Timer2 On bit
1 = Timer2 is on
0 = Timer2 is off
bit 1-0 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 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
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,
10Bh, 18Bh
INTCON GIE 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.