MC68HC811E2FN Freescale Semiconductor, MC68HC811E2FN Datasheet - Page 134
MC68HC811E2FN
Manufacturer Part Number
MC68HC811E2FN
Description
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68HC811E2FN.pdf
(242 pages)
Specifications of MC68HC811E2FN
Cpu Family
HC11
Device Core Size
8b
Frequency (max)
4MHz
Interface Type
SCI/SPI
Program Memory Type
ROMLess
Program Memory Size
Not Required
Total Internal Ram Size
256Byte
# 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
52
Package Type
PLCC
Lead Free Status / Rohs Status
Supplier Unconfirmed
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Timing Systems
OC1 is different from the other output compares in that a successful OC1 compare can affect any or all
five of the OC pins. The OC1 output action taken when a match is found is controlled by two 8-bit registers
with three bits unimplemented: the output compare 1 mask register, OC1M, and the output compare 1
data register, OC1D. OC1M specifies which port A outputs are to be used, and OC1D specifies what data
is placed on these port pins.
9.4.1 Timer Output Compare Registers
All output compare registers are 16-bit read-write. Each is initialized to $FFFF at reset. If an output
compare register is not used for an output compare function, it can be used as a storage location. A write
to the high-order byte of an output compare register pair inhibits the output compare function for one bus
cycle. This inhibition prevents inappropriate subsequent comparisons. Coherency requires a complete
16-bit read or write. However, if coherency is not needed, byte accesses can be used.
For output compare functions, write a comparison value to output compare registers TOC1–TOC4 and
TI4/O5. When TCNT value matches the comparison value, specified pin actions occur.
134
Register name: Timer Output Compare 1 Register (High)
Register name: Timer Output Compare 1 Register (Low)
Register name: Timer Output Compare 2 Register (High)
Register name: Timer Output Compare 2 Register (Low)
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Figure 9-8. Timer Output Compare 1 Register Pair (TOC1)
Figure 9-9. Timer Output Compare 2 Register Pair (TOC2)
Bit 15
Bit 15
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
1
1
1
1
Bit 14
Bit 14
Bit 6
Bit 6
1
1
1
1
6
6
6
6
M68HC11E Family Data Sheet, Rev. 5.1
Bit 13
Bit 13
Bit 5
Bit 5
5
1
5
1
5
1
5
1
Bit 12
Bit 12
Bit 4
Bit 4
4
1
4
1
4
1
4
1
Address: $1017
Address: $1019
Address: $1016
Address: $1018
Bit 11
Bit 11
Bit 3
Bit 3
3
1
3
1
3
1
3
1
Bit 10
Bit 10
Bit 2
Bit 2
2
1
2
1
2
1
2
1
Bit 9
Bit 1
Bit 9
Bit 1
1
1
1
1
1
1
1
1
Freescale Semiconductor
Bit 0
Bit 8
Bit 0
Bit 0
Bit 0
Bit 8
Bit 0
Bit 0
1
1
1
1
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