HD6473937RXV Renesas Electronics America, HD6473937RXV Datasheet - Page 399
HD6473937RXV
Manufacturer Part Number
HD6473937RXV
Description
MCU 3/5V 60K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300L SLPr
Datasheet
1.HD6473937RXV.pdf
(523 pages)
Specifications of HD6473937RXV
Core Processor
H8/300L
Core Size
8-Bit
Speed
10MHz
Connectivity
SCI
Peripherals
POR, WDT
Number Of I /o
59
Program Memory Size
60KB (60K x 8)
Program Memory Type
OTP
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Part Number:
HD6473937RXV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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2. Calculating How Long Tasks Take
Since the TimeToTaskDisabled discussed in the previous section limits how much the host can do
while the FLEX decoder is battery saving, it is necessary for the host to know how long it can take
the FLEX decoder to perform a task.
The formulas below calculate how long the two types of host initiated tasks take to complete as
measured from the last SPI clock of the packet that initiates the task to the time the receiver
shutdown sequence starts. Note that the receiver shutdown sequence must start before tasks are
disabled.
The following formula calculates how long it will take to complete a Noise Detect started by
setting the SND bit in the roaming control packet. This formula assumes that (1) the noise detect
was performed while in synchronous mode or (2) the noise detect was performed in asynchronous
mode and did not find FLEX signal or (3) the noise detect found FLEX signal but the DAS bit of
the roaming control packet was set.
Where,
The following formula calculates how long it will take to complete an A-word search initiated by
setting the SAS bit in the roaming control packet. This formula assumes that the A-word search
failed to find roaming FLEX channel.
Where,
The following formula calculates how long it will take to complete a Noise Detect/A-word search
combination. This can occur when the noise detect is performed while in asynchronous mode, the
noise detect finds FLEX signal, and the DAS bit of the roaming control packet is not set.
Where,
TotalWarmUpTime: The sum of the times programmed for the used warm up steps plus the
TotalWarmUpTime: The sum of the times programmed for the used warm up steps plus the
AST:
TimeToPerformNoiseDetect
TimeToPerformAwordSearch
TimeToPerformBoth
time programmed for the 3200sps Sync Setting in the receiver control
configuration packets.
time programmed for the 3200sps Sync Setting in the receiver control
configuration packets.
The value configured using the timing control packet.
TotalWarmUpTime + AST +127ms
TotalWarmUpTime + 82ms
TotalWarmUpTime + AST + 47ms
385
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