HD64F36077GHV Renesas Electronics America, HD64F36077GHV Datasheet - Page 311

• Manufacturer Part Number: HD64F36077GHV
• Description: 16BIT MCU FLASH 56K, SMD, LQFP64
• Manufacturer: Renesas Electronics America

Specifications of HD64F36077GHV

• No. Of I/o's: 47
• Ram Memory Size: 4KB
• Cpu Speed: 20MHz
• No. Of Timers: 4
• Digital Ic Case Style: LQFP
• Supply Voltage Range: 4.5V
• Core Size: 16bit
• Program Memory Size: 56KB
• Oscillator Type: External Only
• Controller Family/series: H8/300H
• Peripherals: ADC
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

16.3
The SCI3 has the following registers for each channel.
• Receive Shift Register (RSR)
• Receive Data Register (RDR)
• Transmit Shift Register (TSR)
• Transmit Data Register (TDR)
• Serial Mode Register (SMR)
• Serial Control Register 3 (SCR3)
• Serial Status Register (SSR)
• Bit Rate Register (BRR)
16.3.1
RSR is a shift register that is used to receive serial data input from the RxD pin and convert it into
parallel data. When one frame of data has been received, it is transferred to RDR automatically.
RSR cannot be directly accessed by the CPU.
16.3.2
RDR is an 8-bit register that stores received data. When the SCI3 has received one frame of serial
data, it transfers the received serial data from RSR to RDR, where it is stored. After this, RSR is
receive-enabled. As RSR and RDR function as a double buffer in this way, continuous receive
operations are possible. After confirming that the RDRF bit in SSR is set to 1, read RDR only
once. RDR cannot be written to by the CPU. RDR is initialized to H'00.
16.3.3
TSR is a shift register that transmits serial data. To perform serial data transmission, the SCI3 first
transfers transmit data from TDR to TSR automatically, then sends the data that starts from the
LSB to the TXD pin
Register Descriptions
Receive Shift Register (RSR)
Receive Data Register (RDR)
Transmit Shift Register TSR (SCI3)
.
TSR cannot be directly accessed by the CPU.
Section 16 Serial Communication Interface 3 (SCI3)
Rev. 1.00 Sep. 16, 2005 Page 281 of 490
REJ09B0216-0100