HD64F3687GFP Renesas Electronics America, HD64F3687GFP Datasheet - Page 297
HD64F3687GFP
Manufacturer Part Number
HD64F3687GFP
Description
IC H8 MCU FLASH 56K 64-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300H Tinyr
Datasheet
1.HD64F3684GFPV.pdf
(538 pages)
Specifications of HD64F3687GFP
Core Processor
H8/300H
Core Size
16-Bit
Speed
20MHz
Connectivity
I²C, SCI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
45
Program Memory Size
56KB (56K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
64-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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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
16.3.4
TDR is an 8-bit register that stores data for transmission. When the SCI3 detects that TSR is
empty, it transfers the transmit data written in TDR to TSR and starts transmission. The double-
buffered structure of TDR and TSR enables continuous serial transmission. If the next transmit
data has already been written to TDR during transmission of one-frame data, the SCI3 transfers
the written data to TSR to continue transmission. To achieve reliable serial transmission, write
transmit data to TDR only once after confirming that the TDRE bit in SSR is set to 1. TDR is
initialized to H'FF.
Receive Shift Register (RSR)
Receive Data Register (RDR)
Transmit Shift Register (TSR)
Transmit Data Register (TDR)
.
TSR cannot be directly accessed by the CPU.
Section 16 Serial Communication Interface 3 (SCI3)
Rev.5.00 Nov. 02, 2005 Page 263 of 500
REJ09B0027-0500
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