MC9S08RD32PE Freescale Semiconductor, MC9S08RD32PE Datasheet - Page 113

• Manufacturer Part Number: MC9S08RD32PE
• Description: IC MCU 32K FLASH 2K RAM 28-DIP
• Manufacturer: Freescale Semiconductor
• Series: HCS08r

Specifications of MC9S08RD32PE

• Core Processor: HCS08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 23
• 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: 0°C ~ 70°C
• Package / Case: 28-DIP (0.600", 15.24mm)
• Processor Series: S08RD
• Core: HCS08
• Data Bus Width: 8 bit
• Data Ram Size: 2 KB
• Interface Type: SCI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 39
• Number Of Timers: 2
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: EWS08
• Development Tools By Supplier: DEMO9S08RG60E
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

8.5.2.1
When the modulator operates in time mode (MCGEN bit is set, BASE bit is clear, and FSK bit is clear),
the modulation mark period consists of an integer number of CMTCLK ÷ 8 clock periods. The modulation
space period consists of zero or an integer number of CMTCLK ÷ 8 clock periods. With an 8 MHz bus and
CMTDIV1:CMTDIV0 = 00, the modulator resolution is 1 µs and has a maximum mark and space period
of about 65.535 ms each. See
The mark and space time equations for time and baseband mode are:
where CMTCMD1:CMTCMD2 and CMTCMD3:CMTCMD4 are the decimal values of the concatenated
registers.
Freescale Semiconductor
0
Time Mode
If the modulator is disabled while the t
carrier high time (t
into an illegal state and end the curent cycle before the programmed value.
Make sure to program t
illegal state.
* DENOTES HIDDEN REGISTER
SPACE PERIOD REGISTER *
17-BIT DOWN COUNTER *
CMTCMD1:CMTCMD2
CMTCMD3:CMTCMD4
16 BITS
16 BITS
=?
t
mark
16
16
t
space
Figure 8-5
= (CMTCMD1:CMTCMD2 + 1) ÷ (f
MC9S08RC/RD/RE/RG Data Sheet, Rev. 1.11
= CMTCMD3:CMTCMD4 ÷ (f
mark
Figure 8-4. Modulator Block Diagram
LOAD
mark
< CMTCGH1/f
for an example of the time mode and baseband mode outputs.
greater than the carrier high time to avoid this
.
NOTE
SYSTEM CONTROL
CLOCK CONTROL
mark
CMTCLK
time is less than the programmed
MODE
CMTCLK
Carrier Modulator Transmitter (CMT) Block Description
MODULATOR GATE
CMTCLK
), the modulator can enter
÷ 8)
÷ 8)
MODULE INTERRUPT REQUEST
PRIMARY/SECONDARY SELECT
÷
.
EOC FLAG SET
8
CARRIER OUT (f
CMTCLOCK
MODULATOR
CG
)
OUT
Eqn. 8-5
Eqn. 8-6
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