HD6417706F133 Renesas Electronics America, HD6417706F133 Datasheet - Page 418

IC SUPERH MPU ROMLESS 176LQFP

HD6417706F133

Manufacturer Part Number
HD6417706F133
Description
IC SUPERH MPU ROMLESS 176LQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7700r
Datasheet

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)
14.3.1
The receive shift register (SCRSR) is an 8-bit register that receives serial data. Data input at the
RxD pin is loaded into the SCRSR in the order received, LSB (bit 0) first, converting the data to
parallel form. When one byte has been received, it is automatically transferred to the SCRDR. The
CPU cannot read or write the SCRSR directly.
14.3.2
The receive data register (SCRDR) is an 8-bit register that stores serial receive data. The SCI
completes the reception of one byte of serial data by moving the received data from the SCRSR
into the SCRDR for storage. The SCRSR is then ready to receive the next data. This double
buffering allows the SCI to receive data continuously.
The CPU can read but not write the SCRDR. The SCRDR is initialized to H'00 by a reset or in
standby or module standby modes.
14.3.3
The transmit shift register (SCTSR) transmits serial data. The SCI loads transmit data from the
SCTDR into the SCTSR, then transmits the data serially to the TxD0 pin, LSB (bit 0) first. After
transmitting one-byte data, the SCI automatically loads the next transmit data from the SCTDR
into the SCTSR and starts transmitting again. If the TDRE bit of the SCSSR is 1, however, the
SCI does not load the SCTDR contents into the SCTSR. The CPU cannot read or write the SCTSR
directly.
14.3.4
The transmit data register (SCTDR) is an eight-bit register that stores data for serial transmission.
When the SCI detects that the SCTSR is empty, it moves transmit data written in the SCTDR into
the SCTSR and starts serial transmission. Continuous serial transmission is possible by writing the
next transmit data in the SCTDR during serial transmission from the SCTSR.
The CPU can always read and write the SCTDR. The SCTDR is initialized to H'FF by a reset or in
standby and module standby modes.
Rev. 5.00 May 29, 2006 page 368 of 698
REJ09B0146-0500
Receive Shift Register (SCRSR)
Receive Data Register (SCRDR)
Transmit Shift Register (SCTSR)
Transmit Data Register (SCTDR)

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