MC9S08RE16FDER Freescale Semiconductor, MC9S08RE16FDER Datasheet - Page 114
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MC9S08RE16FDER
Manufacturer Part Number
MC9S08RE16FDER
Description
IC MCU 16K FLASH 1K RAM 48-QFN
Manufacturer
Freescale Semiconductor
Series
HCS08r
Specifications of MC9S08RE16FDER
Core Processor
HCS08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
39
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
48-QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
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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
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