MC68HC11E1CFN3R2 Freescale Semiconductor, MC68HC11E1CFN3R2 Datasheet - Page 139
MC68HC11E1CFN3R2
Manufacturer Part Number
MC68HC11E1CFN3R2
Description
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68HC11E1CFN3R2.pdf
(242 pages)
Specifications of MC68HC11E1CFN3R2
Cpu Family
HC11
Device Core Size
8b
Frequency (max)
3MHz
Interface Type
SCI/SPI
Program Memory Type
ROMLess
Program Memory Size
Not Required
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
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
52
Package Type
PLCC
Lead Free Status / Rohs Status
Not Compliant
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9.4.9 Timer Interrupt Mask 2 Register
Use this 8-bit register to enable or inhibit timer overflow and real-time interrupts. The timer prescaler
control bits are included in this register.
TOI — Timer Overflow Interrupt Enable Bit
RTII — Real-Time Interrupt Enable Bit
PAOVI — Pulse Accumulator Overflow Interrupt Enable Bit
PAII — Pulse Accumulator Input Edge Interrupt Enable Bit
Bits [3:2] — Unimplemented
PR[1:0] — Timer Prescaler Select Bits
Freescale Semiconductor
Refer to
Refer to
Refer to
Always read 0
These bits are used to select the prescaler divide-by ratio. In normal modes, PR[1:0] can be written
only once, and the write must be within 64 cycles after reset. Refer to
specific timing values.
0 = TOF interrupts disabled
1 = Interrupt requested when TOF is set to 1
9.5 Real-Time Interrupt
9.7.3 Pulse Accumulator Status and Interrupt
9.7.3 Pulse Accumulator Status and Interrupt
Address:
Bits in TMSK2 correspond bit for bit with flag bits in TFLG2. Bits in TMSK2
enable the corresponding interrupt sources.
Reset:
Read:
Write:
$1024
Figure 9-19. Timer Interrupt Mask 2 Register (TMSK2)
Bit 7
TOI
0
= Unimplemented
RTII
6
0
M68HC11E Family Data Sheet, Rev. 5.1
(RTI).
PR[1:0]
Table 9-4. Timer Prescale
0 0
0 1
1 0
1 1
PAOVI
5
0
NOTE
PAII
4
0
Bits.
Bits.
Prescaler
3
0
16
1
4
8
2
0
Table 9-1
PR1
1
0
and
Bit 0
PR0
0
Table 9-4
Output Compare
for
139
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