MC68HC711K4CFN3 Freescale Semiconductor, MC68HC711K4CFN3 Datasheet - Page 184

• Manufacturer Part Number: MC68HC711K4CFN3
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC711K4CFN3

• Cpu Family: HC11
• Device Core Size: 8b
• Frequency (max): 4MHz
• Interface Type: SCI/SPI
• Program Memory Type: ROM
• Program Memory Size: 24KB
• Total Internal Ram Size: 768Byte
• Number Of Timers - General Purpose: 8
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• 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: 84
• Package Type: PLCC
• Lead Free Status / Rohs Status: Not Compliant

Timing System
Technical Data
184
E Clock Period
E Clock Freq.
EXTAL Freq.
Control Bits
PR[1:0]
0 0
0 1
1 0
1 1
32.768 ms
131.07 ms
262.14 ms
524.29 ms
8.0 MHz
2.0 MHz
500 ns
500 ns
2.0 s
4.0 s
8.0 s
The PH2 bus clock feeds four primary divider chains. The functions
supplied by each of these chains are:
The SPI prescale factor is determined by bits SPR[2] in the system
configuration options 2 (OPT2) register and SPR[1:0] in the serial
peripheral control register (SPCR). See
Register
The input capture and output compare functions are based on a 16-bit
free-running counter, which is driven by the PH2 clock divided by a
programmable prescaler. Bits PR[1:0] of the timer interrupt mask 2
(TMSK2) register enable the user to select one of four divisors: 1, 4, 8,
or 16. The output of this prescaler, referred to as the main timer, feeds
the divider chains for the pulse accumulator, RTI, and COP circuits as
well as the free-running counter.
frequencies and periods available from the most common crystal inputs.
1. Serial peripheral interface (SPI)
2. Input capture/output compare (IC/OC)
3. Pulse accumulator (PA)
4. RTI and COP watchdog circuit
Freescale Semiconductor, Inc.
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21.845 ms
87.381 ms
174.76 ms
349.53 ms
12.0 MHz
2.667 s
5.333 s
3.0 MHz
333 ns
333 ns
1.3 s
Table 9-1. Main Timer Rates
and
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(1 Count/Timer Overflow)
8.6.5 System Configuration Options
EXTAL Frequencies
Main Timer Period
Timing System
16.384 ms
85.536 ms
131.07 ms
262.14 ms
16.0 MHz
4.0 MHz
250 ns
250 ns
1.0 s
2.0 s
4.0 s
13.107 ms
52.429 ms
104.86 ms
209.72 ms
20.0 MHz
Table 9-1
5.0 MHz
200 ns
200 ns
800 ns
1.6 s
3.2 s
8.6.1 Serial Peripheral Control
shows main timer
10.923 ms
43.961 ms
87.381 ms
174.76 ms
20.0 MHz
1.333 s
2.667 s
5.0 MHz
200 ns
167 ns
667 ns
2.
M68HC11K Family
Timer Overflow
Other EXTAL
EXTAL/4
1 Count
2
2
2
2
MOTOROLA
16
1
4
8
16
18
19
20
1/E
E
E
E
E
E
E
E
E