MC68HC11E0CFN2 Freescale Semiconductor, MC68HC11E0CFN2 Datasheet - Page 159
MC68HC11E0CFN2
Manufacturer Part Number
MC68HC11E0CFN2
Description
IC MCU 2MHZ 52-PLCC
Manufacturer
Freescale Semiconductor
Series
HC11r
Datasheet
1.MC68HC11E1CFN3.pdf
(268 pages)
Specifications of MC68HC11E0CFN2
Core Processor
HC11
Core Size
8-Bit
Speed
2MHz
Connectivity
SCI, SPI
Peripherals
POR, WDT
Number Of I /o
38
Program Memory Type
ROMless
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
52-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC11E0CFN2
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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9.5.3 Pulse Accumulator Control Register
9.6 Computer Operating Properly (COP) Watchdog Function
M68HC11E Family — Rev. 5
MOTOROLA
Bits RTR[1:0] of this register select the rate for the RTI system. The remaining bits
control the pulse accumulator and IC4/OC5 functions.
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 Bit
RTR[1:0] — RTI Interrupt Rate Select Bits
The clocking chain for the COP function, tapped off of the main timer divider chain,
is only superficially related to the main timer system. The CR[1:0] bits in the
OPTION register and the NOCOP bit in the CONFIG register determine the status
of the COP function. One additional register, COPRST, is used to arm and clear
the COP watchdog reset system. Refer to
more detailed discussion of the COP function.
Refer to
Refer to
Refer to
Refer to
Refer to
Refer to
These two bits determine the rate at which the RTI system requests interrupts.
The RTI system is driven by an E divided by 2
so it is independent of the timer prescaler. These two control bits select an
additional division factor. Refer to
Address:
Reset:
Read:
Write:
Freescale Semiconductor, Inc.
For More Information On This Product,
Figure 9-23. Pulse Accumulator Control Register (PACTL)
DDRA7
Section 6. Parallel Input/Output (I/O)
9.7 Pulse
9.7 Pulse
9.7 Pulse
Section 6. Parallel Input/Output (I/O)
9.7 Pulse
$1026
Bit 7
0
Go to: www.freescale.com
PAEN
Accumulator.
Accumulator.
Accumulator.
Accumulator.
6
0
Timing System
PAMOD
Computer Operating Properly (COP) Watchdog Function
5
0
Table
PEDGE
4
0
Section 5. Resets and Interrupts
9-5.
DDRA3
13
3
0
rate clock that is compensated
Ports.
Ports.
I4/O5
2
0
RTR1
1
0
Timing System
Data Sheet
RTR0
Bit 0
0
for a
159
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