Datasheet

PIC16C7X
DS30390E-page 70  1997 Microchip Technology Inc.
FIGURE 9-2: T2CON: TIMER2 CONTROL REGISTER (ADDRESS 12h)
TABLE 9-1: 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 R = Readable bit
W = Writable bit
U = Unimplemented bit,
read as ‘0’
- n = Value at POR reset
bit7 bit0
bit 7: Unimplemented: Read as '0'
bit 6-3: TOUTPS3:TOUTPS0: Timer2 Output Postscale Select bits
0000 = 1:1 Postscale
0001 = 1:2 Postscale
•
•
•
1111 = 1:16 Postscale
bit 2: TMR2ON: Timer2 On bit
1 = Timer2 is on
0 = Timer2 is off
bit 1-0: T2CKPS1:T2CKPS0: Timer2 Clock Prescale Select bits
00 = Prescaler is 1
01 = Prescaler is 4
1x = Prescaler is 16
Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Value on:
POR,
BOR
Value on
all other
resets
0Bh,8Bh,
10Bh,18Bh
INTCON GIE PEIE
T0IE INTE RBIE T0IF INTF RBIF
0000 000x 0000 000u
0Ch PIR1 PSPIF
(1,2)
ADIF RCIF
(2)
TXIF
(2)
SSPIF CCP1IF TMR2IF TMR1IF
0000 0000 0000 0000
8Ch PIE1
PSPIE
(1,2)
ADIE RCIE
(2)
TXIE
(2)
SSPIE CCP1IE TMR2IE TMR1IE
0000 0000 0000 0000
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.
Note 1: Bits PSPIE and PSPIF are reserved on the PIC16C73/73A/76, always maintain these bits clear.
2: The PIC16C72 does not have a Parallel Slave Port or a USART, these bits are unimplemented, read as '0'.