HD6417708SF60V Renesas Electronics America, HD6417708SF60V Datasheet - Page 396
HD6417708SF60V
Manufacturer Part Number
HD6417708SF60V
Description
IC SUPERH MPU ROMLESS 208LQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7700r
Datasheet
1.HD6417708SF60V.pdf
(635 pages)
Specifications of HD6417708SF60V
Core Processor
SH-2
Core Size
32-Bit
Speed
60MHz
Connectivity
EBI/EMI, SCI, SmartCard
Peripherals
POR, WDT
Number Of I /o
8
Program Memory Type
ROMless
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
208-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Ram Size
-
Program Memory Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6417708SF60V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
HD6417708SF60V
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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13.3.3
The multiprocessor communication function enables several processors to share a single serial
communication line. The processors communicate in asynchronous mode using a format with an
additional multiprocessor bit (multiprocessor format).
In multiprocessor communication, each receiving processor is addressed by a unique ID. A serial
communication cycle consists of an ID-sending cycle that identifies the receiving processor, and a
data-sending cycle. The multiprocessor bit distinguishes ID-sending cycles from data-sending
cycles. The transmitting processor starts by sending the ID of the receiving processor with which it
wants to communicate as data with the multiprocessor bit set to 1. Next the transmitting processor
sends transmit data with the multiprocessor bit cleared to 0.
Receiving processors skip incoming data until they receive data with the multiprocessor bit set to
1. When they receive data with the multiprocessor bit set to 1, receiving processors compare the
data with their IDs. The receiving processor with a matching ID continues to receive further
incoming data. Processors with IDs not matching the received data skip further incoming data
until they again receive data with the multiprocessor bit set to 1. Multiple processors can send and
receive data in this way.
376
Figure 13.8 SCI Receive Operation (Example: 8-bit Data with Parity and One Stop Bit)
RDRF
Serial
FER
data
Multiprocessor Communication
1
Start
bit
0
D
0
D
1
1 frame
Data
D
7
Parity
bit
RXI interrupt
0/1
request
Stop
bit
1
handler reads data
and clears RDRF
Start
bit
0
RXI interrupt
bit to 0
D
0
D
1
Data
D
7
request generated
Parity
by framing error
bit
0/1
ERI interrupt
Stop
bit
1
(mark)
state
1
Idle
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