MC68HC711E20CFN2 Freescale Semiconductor, MC68HC711E20CFN2 Datasheet - Page 183

• Manufacturer Part Number: MC68HC711E20CFN2
• Description: IC MCU 20K 2MHZ OTP 52-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC711E20CFN2

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 2MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 38
• Program Memory Size: 20KB (20K x 8)
• Program Memory Type: OTP
• Eeprom Size: 512 x 8
• Ram Size: 768 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

9.4.1 Timer Control Register 2
M68HC11E Family — Rev. 3.2
MOTOROLA
Address:
to result in input captures. Writing to TI4/O5 has no effect when the
TI4/O5 register is acting as IC4.
Use the control bits of this register to program input capture functions to
detect a particular edge polarity on the corresponding timer input pin.
Each of the input capture functions can be independently configured to
detect rising edges only, falling edges only, any edge (rising or falling),
or to disable the input capture function. The input capture functions
operate independently of each other and can capture the same TCNT
value if the input edges are detected within the same timer count cycle.
EDGxB and EDGxA — Input Capture Edge Control Bits
Reset:
Read:
Write:
There are four pairs of these bits. Each pair is cleared to 0 by reset
and must be encoded to configure the corresponding input capture
edge detector circuit. IC4 functions only if the I4/O5 bit in the PACTL
register is set. Refer to
EDG4B
$1021
Bit 7
0
Figure 9-3. Timer Control Register 2 (TCTL2)
EDGxB
Table 9-2. Timer Control Configuration
EDG4A
0
0
1
1
Timing System
6
0
EDG1B
EDGxA
5
0
Table 9-2
0
1
0
1
EDG1A
Capture disabled
Capture on rising edges only
Capture on falling edges only
Capture on any edge
4
0
for timer control configuration.
EDG2B
Configuration
3
0
EDG2A
2
0
EDG3B
1
0
Timing System
Technical Data
Input Capture
EDG3A
Bit 0
0
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