HD6473937RXV Renesas Electronics America, HD6473937RXV Datasheet - Page 315
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
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Quantity
Price
Company:
Part Number:
HD6473937RXV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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4. Multiprocessor Communication Function
The multiprocessor communication function enables data to be exchanged among a number of
processors on a shared communication line. Serial data communication is performed in
asynchronous mode using the multiprocessor format (in which a multiprocessor bit is added to the
transfer data).
In multiprocessor communication, each receiver is assigned its own ID code. The serial
communication cycle consists of two cycles, an ID transmission cycle in which the receiver is
specified, and a data transmission cycle in which the transfer data is sent to the specified receiver.
These two cycles are differentiated by means of the multiprocessor bit, 1 indicating an ID
transmission cycle, and 0, a data transmission cycle.
The sender first sends transfer data with a 1 multiprocessor bit added to the ID code of the receiver
it wants to communicate with, and then sends transfer data with a 0 multiprocessor bit added to the
transmit data. When a receiver receives transfer data with the multiprocessor bit set to 1, it
compares the ID code with its own ID code, and if they are the same, receives the transfer data
sent next. If the ID codes do not match, it skips the transfer data until data with the multiprocessor
bit set to 1 is sent again.
In this way, a number of processors can exchange data among themselves.
Figure 10-18 shows an example of communication between processors using the multiprocessor
format.
301
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