PIC17C756A MICROCHIP [Microchip Technology], PIC17C756A Datasheet - Page 100

• Manufacturer Part Number: PIC17C756A
• Description: High-Performance 8-bit CMOS EPROM Microcontrollers with 10-bit A/D
• Manufacturer: MICROCHIP [Microchip Technology]

PIC17C7XX
FIGURE 12-4:
TABLE 12-1:
DS30289B-page 100
05h, Unbanked
06h, Unbanked
07h, Unbanked
0Bh, Unbanked
0Ch, Unbanked
Legend:
Address
WR_TMR0H
WR_TRM0L
x = unknown, u = unchanged, - = unimplemented, read as a '0', q = value depends on condition. Shaded cells are not used by Timer0.
RD_TMR0L
AD15:AD0
Instruction
Instruction
Note: In this example, old TMR0 value is 12FEh, new value of AB56h is written.
Executed
Fetched
TMR0H
TMR0L
T0STA
CPUSTA
INTSTA
TMR0L
TMR0H
ALE
REGISTERS/BITS ASSOCIATED WITH TIMER0
Name
TMR0 READ/WRITE IN TIMER MODE
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
DATAL,TMR0L
TMR0 Register; Low Byte
TMR0 Register; High Byte
Write TMR0L
INTEDG
Previously
Fetched
Instruction
Bit 7
PEIF
MOVFP
—
FE
12
T0CKIF
T0SE
Bit 6
—
DATAH,TMR0H
Write TMR0H
DATAL,TMR0L
Write TMR0L
MOVFP
FF
MOVFP
12
STKAV
T0CS
Bit 5
T0IF
GLINTD
T0PS3
DATAH,TMR0H
INTF
Bit 4
Read TMR0L
Write TMR0H
TMR0L,W
13
56
MOVPF
MOVFP
T0PS2
Bit 3
PEIE
TO
Read TMR0L
T0CKIE
Read TMR0L
T0PS1
AB
TMR0L,W
Bit 2
TMR0L,W
MOVPF
PD
MOVPF
T0PS0
Bit 1
POR
T0IE
Read TMR0L
Read TMR0L
TMR0L,W
TMR0L,W
MOVPF
57
MOVPF
Bit 0
BOR
INTE
—
2000 Microchip Technology Inc.
0000 000-
--11 11qq
0000 0000
xxxx xxxx
xxxx xxxx
Value on
POR,
BOR
Read TMR0L
Read TMR0L
TMR0L,W
TMR0L,W
58
MOVPF
MOVPF
MCLR, WDT
0000 000-
--11 qquu
0000 0000
uuuu uuuu
uuuu uuuu