MC68HC711E9FU

Manufacturer Part NumberMC68HC711E9FU
ManufacturerFreescale Semiconductor
MC68HC711E9FU datasheet
 


Specifications of MC68HC711E9FU

Cpu FamilyHC11Device Core Size8b
Frequency (max)4MHzInterface TypeSCI/SPI
Program Memory TypeEPROMProgram Memory Size12KB
Total Internal Ram Size512Byte# I/os (max)38
Number Of Timers - General Purpose8Operating Supply Voltage (typ)3.3/5V
Operating Supply Voltage (max)5.5VOperating Supply Voltage (min)3V
On-chip Adc8-chx8-bitInstruction Set ArchitectureCISC
Operating Temp Range0C to 70COperating Temperature ClassificationCommercial
MountingSurface MountPin Count64
Package TypePQFPLead Free Status / Rohs StatusNot Compliant
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Page 139/242

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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.
Address:
$1024
Bit 7
Read:
TOI
Write:
Reset:
0
= Unimplemented
Figure 9-19. Timer Interrupt Mask 2 Register (TMSK2)
TOI — Timer Overflow Interrupt Enable Bit
0 = TOF interrupts disabled
1 = Interrupt requested when TOF is set to 1
RTII — Real-Time Interrupt Enable Bit
Refer to
9.5 Real-Time Interrupt
PAOVI — Pulse Accumulator Overflow Interrupt Enable Bit
Refer to
9.7.3 Pulse Accumulator Status and Interrupt
PAII — Pulse Accumulator Input Edge Interrupt Enable Bit
Refer to
9.7.3 Pulse Accumulator Status and Interrupt
Bits [3:2] — Unimplemented
Always read 0
PR[1:0] — Timer Prescaler Select Bits
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.
Bits in TMSK2 correspond bit for bit with flag bits in TFLG2. Bits in TMSK2
enable the corresponding interrupt sources.
Freescale Semiconductor
6
5
4
3
RTII
PAOVI
PAII
0
0
0
0
(RTI).
Bits.
Bits.
Table 9-4. Timer Prescale
PR[1:0]
Prescaler
0 0
1
0 1
4
1 0
8
1 1
16
NOTE
M68HC11E Family Data Sheet, Rev. 5.1
Output Compare
2
1
Bit 0
PR1
PR0
0
0
0
Table 9-1
and
Table 9-4
for
139