HD6473834HV Renesas Electronics America, HD6473834HV Datasheet - Page 296

• Manufacturer Part Number: HD6473834HV
• Description: MCU 5V 32K PB-FREE 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Lr

Specifications of HD6473834HV

• Core Processor: H8/300L
• Core Size: 8-Bit
• Speed: 5MHz
• Connectivity: SCI
• Peripherals: LCD, PWM
• Number Of I /o: 71
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Transmit/Receive Format
Figure 10.16 shows the general communication data format for synchronous communication.
In synchronous communication, data on the communication line is output from one falling edge of
the serial clock until the next falling edge. Data is guaranteed valid at the rising edge of the serial
clock.
One character of data starts from the LSB and ends with the MSB. The communication line retains
the MSB state after the MSB is output.
In synchronous receive mode, SCI3 latches receive data in synchronization with the rising edge of
the serial clock.
The transmit/receive format is fixed at 8-bit data. No parity bit or multiprocessor bit is added in
this mode.
Clock
Either an internal clock from the built-in baud rate generator is used, or an external clock is input
at pin SCK
CKE0 in serial control register 3 (SCR3). See table 10.14 for details on selecting the clock source.
When operation is based on an internal clock, a serial clock is output at pin SCK
pulses are output per character of transmit/receive data. When no transmit or receive operation is
being performed, the pin is held at the high level.
Serial clock
Serial data
Note: * At high level except during continuous transmit/receive.
3
. The choice of clock sources is designated by bit COM in SMR and bits CKE1 and
Don't
*
Figure 10.16 Data Format in Synchronous Communication Mode
care
Bit 0
LSB
One unit of communication data (character or frame)
Bit 1
Bit 2
Bit 3
8 bits
Bit 4
Bit 5
Bit 6
3
. Eight clock
MSB
Bit 7
*
Don't
care
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