MC68HC11EA9 Datasheet, PDF (40/58 Pages) Motorola, Inc – 8 BIT HCMOS SINGLE CHIP MICROCONTOROLLER WITH A/D CONVERTER

Freescale Semiconductor, Inc.
TFLG2 — Timer Interrupt Flag 2
$1025
BIT 7
6
5
4
3
2
1
BIT 0
TOF
RTIF PAOVF PAIF
—
—
—
—
RESET:
0
0
0
0
0
0
0
0
TOF — Timer Overflow Interrupt Flag
If the TOI enable bit is set when the timer counter register (TCNT) changes from $FFFF to $0000, this
flag is set and an interrupt is generated.
0 = TCNT has not rolled over since either the TOF flag bit was last cleared or the TOI enable bit
was set.
1 = TCNT has rolled over to $0000
RTIF — Real-Time Interrupt Flag
If RTII enable bit is set, this flag is set and an interrupt is generated periodically at the rate determined
by the real-time interrupt rate (RTR[1:0]) bits in PACTL.
0 = No periodic interrupt has occurred since either the RTIF flag bit was last cleared or when the
RTII enable bit was set
1 = A periodic interrupt has occurred
PAOVF — Pulse Accumulator Overflow Interrupt Flag
If the PAOVI enable bit is set when the pulse accumulator counter register (PCNT) rolls over to $0000,
this flag is set and an interrupt is generated.
0 = PCNT has not rolled over since either the PAOVF flag bit was last cleared or the PAOVI enable
bit was set.
1 = PCNT has rolled over to $0000
PAIF — Pulse Accumulator Input Edge Interrupt Flag
If the PAII enable bit is set when an edge is detected on the pulse accumulator input pin (PA7/PAI), this
flag is set and an interrupt is generated.
0 = No edge has been detected on the PAI pin
1 = An edge (rising or falling, depending on configuration) has been detected on the PAI pin
Bits [3:0] — Not Implemented
Always read zero
PACTL — Pulse Accumulator Control
$1026
BIT 7
6
5
4
3
—
PAEN PAMOD PEDGE
—
RESET:
0
0
0
0
0
2
I4/O5
0
1
RTR1
0
BIT 0
RTR0
0
Bits [7:4] can be written at any time. PR[1:0] can only be written once in the first 64 cycles after reset in
normal modes (SMOD = 0). In special modes (SMOD = 1) PR[1:0] can be written any time.
Bit 7 — Not Implemented
Always reads zero
PAEN — Pulse Accumulator Enable
Refer to 7.4 Pulse Accumulator.
PAMOD — Pulse Accumulator Mode Select
Refer to 7.4 Pulse Accumulator.
PEDGE — Pulse Accumulator Input Edge Select
Refer to 7.4 Pulse Accumulator.
MC68HC11EA9
40
For More Information On This Product,
MC68HC11EA9TS/D
Go to: www.freescale.com