PIC16F818_13 Datasheet, PDF (64/178 Pages) Microchip Technology – 18/20-Pin Enhanced Flash Microcontrollers with nanoWatt Technology

PIC16F818/819
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’
TOUTPS3:TOUTPS0: Timer2 Output Postscale Select bits
0000 = 1:1 Postscale
0001 = 1:2 Postscale
0010 = 1:3 Postscale
•
•
•
1111 = 1:16 Postscale
TMR2ON: Timer2 On bit
1 = Timer2 is on
0 = Timer2 is off
T2CKPS1:T2CKPS0: Timer2 Clock Prescale Select bits
00 = Prescaler is 1
01 = Prescaler is 4
1x = Prescaler is 16
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, BOR
Value on
all other
Resets
0Bh, 8Bh, INTCON GIE
10Bh, 18Bh
PEIE
TMR0IE
INTE
RBIE TMR0IF INTF
RBIF 0000 000x 0000 000u
0Ch
PIR1
— ADIF
—
—
SSPIF CCP1IF TMR2IF TMR1IF -0-- 0000 -0-- 0000
8Ch
PIE1
— ADIE
—
—
SSPIE CCP1IE TMR2IE TMR1IE -0-- 0000 -0-- 0000
11h
TMR2 Timer2 Module 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.
DS39598F-page 64
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