HD6417706F133 Renesas Electronics America, HD6417706F133 Datasheet - Page 468
HD6417706F133
Manufacturer Part Number
HD6417706F133
Description
IC SUPERH MPU ROMLESS 176LQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7700r
Datasheet
1.HD6417706F133V.pdf
(751 pages)
Specifications of HD6417706F133
Core Processor
SH-3
Core Size
32-Bit
Speed
133MHz
Connectivity
EBI/EMI, FIFO, SCI, SmartCard
Peripherals
DMA, POR, WDT
Number Of I /o
103
Program Memory Type
ROMless
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.75 V ~ 2.05 V
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
176-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
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Section 14 Serial Communication Interface (SCI)
14.6
Note the following points when using the SCI.
SCTDR Writing to and TDRE Flag: The TDRE bit in SCSSR is a status flag indicating loading
of transmit data from the SCTDR into the SCTSR. The SCI sets TDRE to 1 when it transfers data
from the SCTDR to the SCTSR. Data can be written to the SCTDR regardless of the TDRE bit
state. If new data is written in the SCTDR when TDRE is 0, however, the old data stored in the
SCTDR will be lost because the data has not yet been transferred to the SCTSR. Before writing
transmit data to the SCTDR, be sure to check that TDRE is set to 1.
Simultaneous Multiple Receive Errors: Table 14.13 indicates the state of the SCSSR status
flags when multiple receive errors occur simultaneously. When an overrun error occurs, the
SCRSR contents cannot be transferred to the SCRDR, so receive data is lost.
Table 14.13 SCSSR Status Flags and Transfer of Receive Data
Legend: X: Receive data is not transferred from SCRSR to SCRDR.
Break Detection and Processing: Break signals can be detected by reading the RxD0 pin directly
when a framing error (FER) is detected. In the break state, the input from the RxD0 pin consists of
all 0s, so FER is set and the parity error flag (PER) may also be set. In the break state, the SCI
receiver continues to operate, so if the FER bit is cleared to 0, it will be set to 1 again.
Sending a Break Signal: The TxD0 pin I/O condition and level can be determined by means of
the SCP0DT bit of the SCPDR and bits SCP0MD0 and SCP0MD1 of the SCPCR. These bits can
be used to send breaks. To send a break during serial transmission, clear the SCP0DT bit to 0
(designating low level), then clear the TE bit to 0 (halting transmission). When the TE bit is
Rev. 5.00 May 29, 2006 page 418 of 698
REJ09B0146-0500
Receive Error Status
Overrun error
Framing error
Parity error
Overrun error + framing error
Overrun error + parity error
Framing error + parity error
Overrun error + framing error + parity
error
Usage Note
O: Receive data is transferred from SCRSR to SCRDR.
RDRF
1
0
0
1
1
0
1
SCSSR Status Flags
ORER
1
0
0
1
1
0
1
FER PER
0
1
0
1
0
1
1
0
0
1
0
1
1
1
Receive Data Transfer
SCRSR
X
O
O
X
X
O
X
SCRDR
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