PIC17C4X
TABLE 6-3:
SPECIAL FUNCTION REGISTERS (Cont.’d)
Value on
Power-on
Reset
Value on all
other
resets (3)
Address Name
Bank 2
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
10h
11h
12h
13h
14h
15h
16h
17h
TMR1
Timer1
Timer2
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
TMR2
TMR3L
TMR3H
PR1
TMR3 register; low byte
TMR3 register; high byte
Timer1 period register
Timer2 period register
PR2
PR3L/CA1L
Timer3 period register, low byte/capture1 register; low byte
PR3H/CA1H Timer3 period register, high byte/capture1 register; high byte
Bank 3
10h
PW1DCL
PW2DCL
PW1DCH
PW2DCH
CA2L
DC1
DC1
DC9
DC9
DC0
DC0
DC8
DC8
—
TM2PW2
DC7
—
—
—
—
—
—
—
—
—
—
xx-- ---- uu-- ----
xx0- ---- uu0- ----
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
11h
12h
DC6
DC6
DC5
DC5
DC4
DC4
DC3
DC3
DC2
DC2
13h
DC7
14h
Capture2 low byte
Capture2 high byte
15h
CA2H
16h
TCON1
CA2ED1 CA2ED0 CA1ED1
CA1ED0
T16
TMR3CS TMR2CS TMR1CS 0000 0000 0000 0000
17h
TCON2
CA2OVF CA1OVF PWM2ON PWM1ON CA1/PR3 TMR3ON TMR2ON TMR1ON 0000 0000 0000 0000
Unbanked
18h(5)
19h(5)
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
PRODL
PRODH
Low Byte of 16-bit Product (8 x 8 Hardware Multiply)
High Byte of 16-bit Product (8 x 8 Hardware Multiply)
Legend:
Note 1:
x = unknown, u = unchanged, - = unimplemented read as '0', q - value depends on condition. Shaded cells are unimplemented, read as '0'.
The upper byte of the program counter is not directly accessible. PCLATH is a holding register for PC<15:8> whose contents are updated
from or transferred to the upper byte of the program counter.
2:
3:
4:
The TO and PD status bits in CPUSTA are not affected by a MCLR reset.
Other (non power-up) resets include: external reset through MCLR and the Watchdog Timer Reset.
The following values are for both TBLPTRL and TBLPTRH:
All PIC17C4X devices (Power-on Reset 0000 0000) and (All other resets 0000 0000)
except the PIC17C42 (Power-on Reset xxxx xxxx) and (All other resets uuuu uuuu)
The PRODL and PRODH registers are not implemented on the PIC17C42.
5:
1996 Microchip Technology Inc.
DS30412C-page 35
MICROCHIP [ MICROCHIP ]
