MC68HC908RF2MFA Freescale Semiconductor, MC68HC908RF2MFA Datasheet - Page 144

• Manufacturer Part Number: MC68HC908RF2MFA
• Description: IC MCU 2K FLASH 4MHZ 32-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908RF2MFA

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: LVD, POR, PWM, RF Mod
• Number Of I /o: 12
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -

Timer Interface Module (TIM)
Data Sheet
144
NOTE:
NOTE:
NOTE:
Before changing a channel function by writing to the MSxB or MSxA bit, set the
TSTOP and TRST bits in the TIM status and control register (TSC).
ELSxB and ELSxA — Edge/Level Select Bits
TIM channel 1 does not have an external pin associated with it.
Before enabling a TIM channel register for input capture operation, make sure that
the PTB/TCH0 pin is stable for at least two bus clocks.
TOVx — Toggle On Overflow Bit
When ELSxB:A = 00, this read/write bit selects the initial output level of the
TCH0 pin. See
When channel 0 is an input capture channel, these read/write bits control the
active edge-sensing logic on channel x. When channel x is an output compare
channel, ELSxB and ELSxA control the channel x output behavior when an
output compare occurs.
When ELSxB and ELSxA are both clear, channel x is not connected to port B,
and pin PTB0/TCH0 is available as a general-purpose I/O pin.
shows how ELSxB and ELSxA work. Reset clears the ELSxB and ELSxA bits.
When channel 0 is an output compare channel, this read/write bit controls the
behavior of the channel 0 output when the TIM counter overflows. When
channel 0 is an input capture channel, TOV0 has no effect. Reset clears the
TOV0 bit.
MSxB
1 = Initial output level low
0 = Initial output level high
1 = Channel x pin toggles on TIM counter overflow.
0 = Channel x pin does not toggle on TIM counter overflow.
Freescale Semiconductor, Inc.
X
X
0
0
0
0
0
0
0
1
1
1
For More Information On This Product,
MSxA
0
1
0
0
0
1
1
1
1
X
X
X
Go to: www.freescale.com
Timer Interface Module (TIM)
Table
Table 11-3. Mode, Edge, and Level Selection
ELSxB
0
0
0
1
1
0
0
1
1
0
1
1
11-3. Reset clears the MSxA bit.
ELSxA
0
0
1
0
1
0
1
0
1
1
0
1
Output compare
buffered PWM
Output preset
Input capture
compare or
Buffered
or PWM
output
Mode
Pin under port control;
initial output level high
Pin under port control;
initial output level low
Capture on rising edge only
Capture on falling edge only
Capture on rising or falling edge
Software compare only
Toggle output on compare
Clear output on compare
Set output on compare
Toggle output on compare
Clear output on compare
Set output on compare
MC68HC908RF2 — Rev. 4.0
Configuration
Table 11-3
MOTOROLA