MC68HC711E9FU Freescale Semiconductor, MC68HC711E9FU Datasheet - Page 145
MC68HC711E9FU
Manufacturer Part Number
MC68HC711E9FU
Description
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68HC711E9FU.pdf
(242 pages)
Specifications of MC68HC711E9FU
Cpu Family
HC11
Device Core Size
8b
Frequency (max)
4MHz
Interface Type
SCI/SPI
Program Memory Type
EPROM
Program Memory Size
12KB
Total Internal Ram Size
512Byte
# I/os (max)
38
Number Of Timers - General Purpose
8
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
3V
On-chip Adc
8-chx8-bit
Instruction Set Architecture
CISC
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
64
Package Type
PQFP
Lead Free Status / Rohs Status
Not Compliant
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9.7.1 Pulse Accumulator Control Register
Four of this register’s bits control an 8-bit pulse accumulator system. Another bit enables either the OC5
function or the IC4 function, while two other bits select the rate for the real-time interrupt system.
DDRA7 — Data Direction for Port A Bit 7
PAEN — Pulse Accumulator System Enable Bit
PAMOD — Pulse Accumulator Mode Bit
PEDGE — Pulse Accumulator Edge Control Bit
DDRA3 — Data Direction for Port A Bit 3
I4/O5 — Input Capture 4/Output Compare 5 Bit
RTR[1:0] — RTI Interrupt Rate Select Bits
Freescale Semiconductor
Refer to
This bit has different meanings depending on the state of the PAMOD bit, as shown in
Refer to
Refer to
0 = Pulse accumulator disabled
1 = Pulse accumulator enabled
0 = Event counter
1 = Gated time accumulation
0 = Output compare 5 function enable (no IC4)
1 = Input capture 4 function enable (no OC5)
Chapter 6 Parallel Input/Output (I/O)
Chapter 6 Parallel Input/Output (I/O)
9.5 Real-Time Interrupt
Address:
Reset:
Read:
Write:
Figure 9-25. Pulse Accumulator Control Register (PACTL)
DDRA7
$1026
PAMOD
Bit 7
0
0
0
1
1
Table 9-7. Pulse Accumulator Edge Control
PAEN
6
0
PEDGE
M68HC11E Family Data Sheet, Rev. 5.1
(RTI).
0
1
0
1
PAMOD
5
0
PAI falling edge increments the counter.
PAI rising edge increments the counter.
A 0 on PAI inhibits counting.
A 1 on PAI inhibits counting.
PEDGE
Ports.
Ports.
4
0
Action on Clock
DDRA3
3
0
I4/O5
2
0
RTR1
1
0
RTR0
Bit 0
Pulse Accumulator
0
Table
9-7.
145
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