DF2238RTF6 Renesas Electronics America, DF2238RTF6 Datasheet - Page 569

• Manufacturer Part Number: DF2238RTF6
• Description: MCU 2.2/3V 256K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2200r

Specifications of DF2238RTF6

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 6MHz
• Connectivity: I²C, SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 72
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2238RTF6; HD64F2238RTF6

14.3.9
IETBR is a 1-byte buffer to which data to be transmitted in master or slave transmission is written.
IETBR is empty when the TxRDY flag in IETSR is 1. Check the TxRDY flag before setting
transmit data in IETBR.
Data written in IETBR is transmitted in the data field in master or slave transmission. Figure 14.6
shows the correspondence between the communications signal format and registers for IEBus data
transfer.
Bit
7
6
5
4
3
2
1
0
[In master transmission]
Communications frame
Register
[In slave transmission]
Communications frame
Register
Bit Name
TBR7
TBR6
TBR5
TBR4
TBR3
TBR2
TBR1
TBR0
IEBus Transmit Buffer Register (IETBR)
Figure 14.6 Transmission Signal Format and Registers in Data Transfer
Notes: 1. In slave transmission, the received master address is not saved. If the unit is locked,
Initial Value
0
0
0
0
0
0
0
0
Master address
Master address
IEAR1, IEAR2
2. The received slave address is compared with IEAR1 and IEAR2, and if these addresses
3. In slave transmission, the received control bits are not saved. The received control bits
address comparison performed.
match, operation continues.
are decoded to decide the subsequent operation.
(*1)
IEAR1, IEAR2
Slave address
Slave address
IESA1, IESA2
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Section 14 IEBus™ Controller (IEB) [H8S/2258 Group]
(*2)
Description
Data to be transmitted is written to this 1-byte
buffer.
CTL3 to CTL0
Control bits
Control bits
in IEMCR
(*3)
Rev. 6.00 Mar. 18, 2010 Page 507 of 982
Message length
Message length
IETBFL
IETBFL
bits
bits
Data bits
Data bits
IETBR
IETBR
REJ09B0054-0600