MC68HC908RF2MFA Freescale Semiconductor, MC68HC908RF2MFA Datasheet - Page 152

• 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: -

PLL Tuned UHF Transmitter Module
Data Sheet
152
State 1
State 2
State 3
State 4
State 5
State 6
Figure 12-4
OOK MODULATION
FSK MODULATION
Note: PLL locked, circuit ready to tramsmit in band.
The circuit is in standby mode and draws only a leakage current from the power
supply.
In this state, the PLL is enabled but out of the lock-in range. Therefore the RF
output stage is switched off preventing any data transmission. Data clock is
available on pin DATACLK. In normal operation, this state is transitional.
In this state, the PLL is within the lock-in range.
The circuit is ready to transmit in band and is waiting for the first data (see
Figure
A rising edge on pin DATA starts the transmission. Data entered on pin DATA
are output on pin RFOUT. The modulation is the one selected through the level
applied on pin MODE.
An out-of-lock condition has been detected. The RF output stage is switched off
preventing any data transmission. Data clock is available on pin DATACLK.
When the supply voltage falls below the shutdown voltage threshold (V
the whole circuit is switched off. Applying a low level on pin ENABLE is the only
condition to get out of this state.
If t < t
If t ≥ t
Freescale Semiconductor, Inc.
MODE = 0
MODE = 1
DATACLK
ENABLE
RFOUT
For More Information On This Product,
DATA
12-4).
Figure 12-4. Signals, Waveforms, and Timing Definitions
STATE 1
PLL_Lock_In
PLL_Lock_In
shows the waveforms of the main signals for a typical application cycle
PLL Tuned UHF Transmitter Module
Go to: www.freescale.com
, then the PLL can still be in acquisition mode.
, then the PLL is locked.
STATE 2
t
PLL_Lock_In
t
DATACLK_Settling
STATE 3
SEE NOTE
f
f
Carrier
Carrier1
f
Carrier2
STATE 4
MC68HC908RF2 — Rev. 4.0
f
Carrier1
f
Carrier
f
Carrier2
MOTOROLA
SDWN
STATE 1
)