HD6473834HV Renesas Electronics America, HD6473834HV Datasheet - Page 247

• 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: -

Bits 4 to 2—Reserved Bits: Bits 4 to 2 are reserved; they are always read as 0, and cannot be
modified.
Bit 1—Reserved Bit: Bit 1 is reserved; it should always be cleared to 0.
Bit 0—Start Flag (STF): Bit 0 controls the start of a transfer. Setting this bit to 1 causes SCI1 to
start transferring data.
During the transfer or while waiting for the first clock pulse, this bit remains set to 1. It is cleared
to 0 upon completion of the transfer. It can therefore be used as a busy flag.
Bit 0: STF
0
1
Serial Data Register U (SDRU)
SDRU is an 8-bit read/write register. It is used as the data register for the upper 8 bits in 16-bit
transfer (SDRL is used for the lower 8 bits).
Data written to SDRU is output to SDRL starting from the least significant bit (LSB). This data is
then replaced by LSB-first data input at pin SI
significant bit (MSB) toward the LSB.
SDRU must be written or read only after data transmission or reception is complete. If this register
is written or read while a data transfer is in progress, the data contents are not guaranteed.
The SDRU value upon reset is not fixed.
230
Bit
Initial value
Read/Write
Not fixed Not fixed Not fixed Not fixed Not fixed Not fixed Not fixed Not fixed
SDRU7
Description
Read: Indicates that transfer is stopped
Write: Invalid
Read: Indicates transfer in progress
Write: Starts a transfer operation
R/W
7
SDRU6
R/W
6
SDRU5
R/W
5
1
, which is shifted in the direction from the most
SDRU4
R/W
4
SDRU3
R/W
3
SDRU2
R/W
2
SDRU1
R/W
1
(initial value)
SDRU0
R/W
0