MC9S08RD32CFJE Freescale Semiconductor, MC9S08RD32CFJE Datasheet - Page 114

• Manufacturer Part Number: MC9S08RD32CFJE
• Description: IC MCU 32K FLASH 8MHZ 32-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HCS08r

Specifications of MC9S08RD32CFJE

• Core Processor: HCS08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 25
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

Carrier Modulator Transmitter (CMT) Block Description
8.5.2.2
Baseband mode (MCGEN bit is set and BASE bit is set) is a derivative of time mode, where the mark and
space period is based on (CMTCLK ÷ 8) counts. The mark and space calculations are the same as in time
mode. In this mode the modulator output will be at a logic 1 for the duration of the mark period and at a
logic 0 for the duration of a space period. See
and time modes. In the example, the carrier out frequency (f
a low count of $02, which results in a divide of 3 of CMTCLK with a 33 percent duty cycle. The modulator
down-counter was loaded with the value $0003 and the space period register with $0002.
8.5.2.3
When the modulator operates in FSK mode (MCGEN bit is set, FSK bit is set, and BASE bit is clear), the
modulation mark and space periods consist of an integer number of carrier clocks (space period can be 0).
When the mark period expires, the space period is transparently started (as in time mode). The carrier
generator toggles between primary and secondary data register values whenever the modulator space
period expires.
114
IRO PIN (TIME MODE)
CARRIER OUT (f
MODULATOR GATE
(BASEBAND MODE)
CMTCLK ÷ 8
IRO PIN
CG
Baseband Mode
FSK Mode
)
The waveforms in
conceptual illustration and are not meant to represent precise timing
relationships between the signals shown.
Figure 8-5. Example CMT Output in Time and Baseband Modes
MARK
MC9S08RC/RD/RE/RG Data Sheet, Rev. 1.11
Figure 8-5
and
Figure 8-5
NOTE
Figure 8-6
SPACE
for an example of the output for both baseband
CG
are for the purpose of
) is generated with a high count of $01 and
MARK
Freescale Semiconductor